1 //! Convenient utilities to create an invoice.
3 use crate::{CreationError, Currency, Invoice, InvoiceBuilder, SignOrCreationError};
4 use crate::payment::Payer;
6 use crate::{prelude::*, Description, InvoiceDescription, Sha256};
8 use bitcoin_hashes::Hash;
10 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
11 use lightning::chain::keysinterface::{Recipient, NodeSigner, SignerProvider, EntropySource};
12 use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
13 use lightning::ln::channelmanager::{ChannelDetails, ChannelManager, PaymentId, PaymentSendFailure, MIN_FINAL_CLTV_EXPIRY_DELTA};
14 #[cfg(feature = "std")]
15 use lightning::ln::channelmanager::{PhantomRouteHints, MIN_CLTV_EXPIRY_DELTA};
16 use lightning::ln::inbound_payment::{create, create_from_hash, ExpandedKey};
17 use lightning::routing::gossip::RoutingFees;
18 use lightning::routing::router::{InFlightHtlcs, Route, RouteHint, RouteHintHop, Router};
19 use lightning::util::logger::Logger;
20 use secp256k1::PublicKey;
22 use core::time::Duration;
24 #[cfg(feature = "std")]
25 /// Utility to create an invoice that can be paid to one of multiple nodes, or a "phantom invoice."
26 /// See [`PhantomKeysManager`] for more information on phantom node payments.
28 /// `phantom_route_hints` parameter:
29 /// * Contains channel info for all nodes participating in the phantom invoice
30 /// * Entries are retrieved from a call to [`ChannelManager::get_phantom_route_hints`] on each
31 /// participating node
32 /// * It is fine to cache `phantom_route_hints` and reuse it across invoices, as long as the data is
33 /// updated when a channel becomes disabled or closes
34 /// * Note that if too many channels are included in [`PhantomRouteHints::channels`], the invoice
35 /// may be too long for QR code scanning. To fix this, `PhantomRouteHints::channels` may be pared
38 /// `payment_hash` can be specified if you have a specific need for a custom payment hash (see the difference
39 /// between [`ChannelManager::create_inbound_payment`] and [`ChannelManager::create_inbound_payment_for_hash`]).
40 /// If `None` is provided for `payment_hash`, then one will be created.
42 /// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
43 /// in excess of the current time.
45 /// You can specify a custom `min_final_cltv_expiry_delta`, or let LDK default it to
46 /// [`MIN_FINAL_CLTV_EXPIRY_DELTA`]. The provided expiry must be at least [`MIN_FINAL_CLTV_EXPIRY_DELTA`] - 3.
47 /// Note that LDK will add a buffer of 3 blocks to the delta to allow for up to a few new block
48 /// confirmations during routing.
50 /// Note that the provided `keys_manager`'s `NodeSigner` implementation must support phantom
51 /// invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
54 /// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
55 /// [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
56 /// [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
57 /// [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
58 /// [`PhantomRouteHints::channels`]: lightning::ln::channelmanager::PhantomRouteHints::channels
59 /// [`MIN_FINAL_CLTV_EXPIRY_DETLA`]: lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY_DELTA
60 pub fn create_phantom_invoice<ES: Deref, NS: Deref, L: Deref>(
61 amt_msat: Option<u64>, payment_hash: Option<PaymentHash>, description: String,
62 invoice_expiry_delta_secs: u32, phantom_route_hints: Vec<PhantomRouteHints>, entropy_source: ES,
63 node_signer: NS, logger: L, network: Currency, min_final_cltv_expiry_delta: Option<u16>,
64 ) -> Result<Invoice, SignOrCreationError<()>>
66 ES::Target: EntropySource,
67 NS::Target: NodeSigner,
70 let description = Description::new(description).map_err(SignOrCreationError::CreationError)?;
71 let description = InvoiceDescription::Direct(&description,);
72 _create_phantom_invoice::<ES, NS, L>(
73 amt_msat, payment_hash, description, invoice_expiry_delta_secs, phantom_route_hints,
74 entropy_source, node_signer, logger, network, min_final_cltv_expiry_delta,
78 #[cfg(feature = "std")]
79 /// Utility to create an invoice that can be paid to one of multiple nodes, or a "phantom invoice."
80 /// See [`PhantomKeysManager`] for more information on phantom node payments.
82 /// `phantom_route_hints` parameter:
83 /// * Contains channel info for all nodes participating in the phantom invoice
84 /// * Entries are retrieved from a call to [`ChannelManager::get_phantom_route_hints`] on each
85 /// participating node
86 /// * It is fine to cache `phantom_route_hints` and reuse it across invoices, as long as the data is
87 /// updated when a channel becomes disabled or closes
88 /// * Note that if too many channels are included in [`PhantomRouteHints::channels`], the invoice
89 /// may be too long for QR code scanning. To fix this, `PhantomRouteHints::channels` may be pared
92 /// `description_hash` is a SHA-256 hash of the description text
94 /// `payment_hash` can be specified if you have a specific need for a custom payment hash (see the difference
95 /// between [`ChannelManager::create_inbound_payment`] and [`ChannelManager::create_inbound_payment_for_hash`]).
96 /// If `None` is provided for `payment_hash`, then one will be created.
98 /// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
99 /// in excess of the current time.
101 /// Note that the provided `keys_manager`'s `NodeSigner` implementation must support phantom
102 /// invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
105 /// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
106 /// [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
107 /// [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
108 /// [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
109 /// [`PhantomRouteHints::channels`]: lightning::ln::channelmanager::PhantomRouteHints::channels
110 pub fn create_phantom_invoice_with_description_hash<ES: Deref, NS: Deref, L: Deref>(
111 amt_msat: Option<u64>, payment_hash: Option<PaymentHash>, invoice_expiry_delta_secs: u32,
112 description_hash: Sha256, phantom_route_hints: Vec<PhantomRouteHints>, entropy_source: ES,
113 node_signer: NS, logger: L, network: Currency, min_final_cltv_expiry_delta: Option<u16>,
114 ) -> Result<Invoice, SignOrCreationError<()>>
116 ES::Target: EntropySource,
117 NS::Target: NodeSigner,
120 _create_phantom_invoice::<ES, NS, L>(
121 amt_msat, payment_hash, InvoiceDescription::Hash(&description_hash),
122 invoice_expiry_delta_secs, phantom_route_hints, entropy_source, node_signer, logger, network,
123 min_final_cltv_expiry_delta,
127 #[cfg(feature = "std")]
128 fn _create_phantom_invoice<ES: Deref, NS: Deref, L: Deref>(
129 amt_msat: Option<u64>, payment_hash: Option<PaymentHash>, description: InvoiceDescription,
130 invoice_expiry_delta_secs: u32, phantom_route_hints: Vec<PhantomRouteHints>, entropy_source: ES,
131 node_signer: NS, logger: L, network: Currency, min_final_cltv_expiry_delta: Option<u16>,
132 ) -> Result<Invoice, SignOrCreationError<()>>
134 ES::Target: EntropySource,
135 NS::Target: NodeSigner,
138 use std::time::{SystemTime, UNIX_EPOCH};
140 if phantom_route_hints.len() == 0 {
141 return Err(SignOrCreationError::CreationError(
142 CreationError::MissingRouteHints,
146 if min_final_cltv_expiry_delta.is_some() && min_final_cltv_expiry_delta.unwrap().saturating_add(3) < MIN_FINAL_CLTV_EXPIRY_DELTA {
147 return Err(SignOrCreationError::CreationError(CreationError::MinFinalCltvExpiryDeltaTooShort));
150 let invoice = match description {
151 InvoiceDescription::Direct(description) => {
152 InvoiceBuilder::new(network).description(description.0.clone())
154 InvoiceDescription::Hash(hash) => InvoiceBuilder::new(network).description_hash(hash.0),
157 // If we ever see performance here being too slow then we should probably take this ExpandedKey as a parameter instead.
158 let keys = ExpandedKey::new(&node_signer.get_inbound_payment_key_material());
159 let (payment_hash, payment_secret) = if let Some(payment_hash) = payment_hash {
160 let payment_secret = create_from_hash(
164 invoice_expiry_delta_secs,
166 .duration_since(UNIX_EPOCH)
167 .expect("Time must be > 1970")
169 min_final_cltv_expiry_delta,
171 .map_err(|_| SignOrCreationError::CreationError(CreationError::InvalidAmount))?;
172 (payment_hash, payment_secret)
177 invoice_expiry_delta_secs,
180 .duration_since(UNIX_EPOCH)
181 .expect("Time must be > 1970")
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
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>>()
636 impl<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref> Payer for ChannelManager<M, T, ES, NS, SP, F, R, L>
638 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
639 T::Target: BroadcasterInterface,
640 ES::Target: EntropySource,
641 NS::Target: NodeSigner,
642 SP::Target: SignerProvider,
643 F::Target: FeeEstimator,
647 fn node_id(&self) -> PublicKey {
648 self.get_our_node_id()
651 fn first_hops(&self) -> Vec<ChannelDetails> {
652 self.list_usable_channels()
656 &self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>,
657 payment_id: PaymentId
658 ) -> Result<(), PaymentSendFailure> {
659 self.send_payment(route, payment_hash, payment_secret, payment_id)
662 fn send_spontaneous_payment(
663 &self, route: &Route, payment_preimage: PaymentPreimage, payment_id: PaymentId,
664 ) -> Result<(), PaymentSendFailure> {
665 self.send_spontaneous_payment(route, Some(payment_preimage), payment_id).map(|_| ())
669 &self, route: &Route, payment_id: PaymentId
670 ) -> Result<(), PaymentSendFailure> {
671 self.retry_payment(route, payment_id)
674 fn abandon_payment(&self, payment_id: PaymentId) {
675 self.abandon_payment(payment_id)
678 fn inflight_htlcs(&self) -> InFlightHtlcs { self.compute_inflight_htlcs() }
683 use core::time::Duration;
684 use crate::{Currency, Description, InvoiceDescription, SignOrCreationError, CreationError};
685 use bitcoin_hashes::{Hash, sha256};
686 use bitcoin_hashes::sha256::Hash as Sha256;
687 use lightning::chain::keysinterface::{EntropySource, PhantomKeysManager};
688 use lightning::ln::{PaymentPreimage, PaymentHash};
689 use lightning::ln::channelmanager::{PhantomRouteHints, MIN_FINAL_CLTV_EXPIRY_DELTA, PaymentId};
690 use lightning::ln::functional_test_utils::*;
691 use lightning::ln::msgs::ChannelMessageHandler;
692 use lightning::routing::router::{PaymentParameters, RouteParameters, find_route};
693 use lightning::util::events::{MessageSendEvent, MessageSendEventsProvider, Event};
694 use lightning::util::test_utils;
695 use lightning::util::config::UserConfig;
696 use crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch;
697 use std::collections::HashSet;
700 fn test_from_channelmanager() {
701 let chanmon_cfgs = create_chanmon_cfgs(2);
702 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
703 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
704 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
705 create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
706 let non_default_invoice_expiry_secs = 4200;
707 let invoice = create_invoice_from_channelmanager_and_duration_since_epoch(
708 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
709 Some(10_000), "test".to_string(), Duration::from_secs(1234567),
710 non_default_invoice_expiry_secs, None).unwrap();
711 assert_eq!(invoice.amount_pico_btc(), Some(100_000));
712 // If no `min_final_cltv_expiry_delta` is specified, then it should be `MIN_FINAL_CLTV_EXPIRY_DELTA`.
713 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
714 assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
715 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
717 // Invoice SCIDs should always use inbound SCID aliases over the real channel ID, if one is
719 let chan = &nodes[1].node.list_usable_channels()[0];
720 assert_eq!(invoice.route_hints().len(), 1);
721 assert_eq!(invoice.route_hints()[0].0.len(), 1);
722 assert_eq!(invoice.route_hints()[0].0[0].short_channel_id, chan.inbound_scid_alias.unwrap());
724 assert_eq!(invoice.route_hints()[0].0[0].htlc_minimum_msat, chan.inbound_htlc_minimum_msat);
725 assert_eq!(invoice.route_hints()[0].0[0].htlc_maximum_msat, chan.inbound_htlc_maximum_msat);
727 let payment_params = PaymentParameters::from_node_id(invoice.recover_payee_pub_key())
728 .with_features(invoice.features().unwrap().clone())
729 .with_route_hints(invoice.route_hints());
730 let route_params = RouteParameters {
732 final_value_msat: invoice.amount_milli_satoshis().unwrap(),
733 final_cltv_expiry_delta: invoice.min_final_cltv_expiry_delta() as u32,
735 let first_hops = nodes[0].node.list_usable_channels();
736 let network_graph = &node_cfgs[0].network_graph;
737 let logger = test_utils::TestLogger::new();
738 let scorer = test_utils::TestScorer::with_penalty(0);
739 let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
740 let route = find_route(
741 &nodes[0].node.get_our_node_id(), &route_params, &network_graph,
742 Some(&first_hops.iter().collect::<Vec<_>>()), &logger, &scorer, &random_seed_bytes
745 let payment_event = {
746 let mut payment_hash = PaymentHash([0; 32]);
747 payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
748 nodes[0].node.send_payment(&route, payment_hash, &Some(invoice.payment_secret().clone()), PaymentId(payment_hash.0)).unwrap();
749 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
750 assert_eq!(added_monitors.len(), 1);
751 added_monitors.clear();
753 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
754 assert_eq!(events.len(), 1);
755 SendEvent::from_event(events.remove(0))
758 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
759 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
760 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
761 assert_eq!(added_monitors.len(), 1);
762 added_monitors.clear();
763 let events = nodes[1].node.get_and_clear_pending_msg_events();
764 assert_eq!(events.len(), 2);
767 fn do_create_invoice_min_final_cltv_delta(with_custom_delta: bool) {
768 let chanmon_cfgs = create_chanmon_cfgs(2);
769 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
770 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
771 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
772 let custom_min_final_cltv_expiry_delta = Some(50);
774 let invoice = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch(
775 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
776 Some(10_000), "".into(), Duration::from_secs(1234567), 3600,
777 if with_custom_delta { custom_min_final_cltv_expiry_delta } else { None },
779 assert_eq!(invoice.min_final_cltv_expiry_delta(), if with_custom_delta {
780 custom_min_final_cltv_expiry_delta.unwrap() + 3 /* Buffer */} else { MIN_FINAL_CLTV_EXPIRY_DELTA } as u64);
784 fn test_create_invoice_custom_min_final_cltv_delta() {
785 do_create_invoice_min_final_cltv_delta(true);
786 do_create_invoice_min_final_cltv_delta(false);
790 fn create_invoice_min_final_cltv_delta_equals_htlc_fail_buffer() {
791 let chanmon_cfgs = create_chanmon_cfgs(2);
792 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
793 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
794 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
795 let custom_min_final_cltv_expiry_delta = Some(21);
797 let invoice = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch(
798 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
799 Some(10_000), "".into(), Duration::from_secs(1234567), 3600,
800 custom_min_final_cltv_expiry_delta,
802 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
806 fn test_create_invoice_with_description_hash() {
807 let chanmon_cfgs = create_chanmon_cfgs(2);
808 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
809 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
810 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
811 let description_hash = crate::Sha256(Hash::hash("Testing description_hash".as_bytes()));
812 let invoice = crate::utils::create_invoice_from_channelmanager_with_description_hash_and_duration_since_epoch(
813 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
814 Some(10_000), description_hash, Duration::from_secs(1234567), 3600, None,
816 assert_eq!(invoice.amount_pico_btc(), Some(100_000));
817 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
818 assert_eq!(invoice.description(), InvoiceDescription::Hash(&crate::Sha256(Sha256::hash("Testing description_hash".as_bytes()))));
822 fn test_create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash() {
823 let chanmon_cfgs = create_chanmon_cfgs(2);
824 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
825 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
826 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
827 let payment_hash = PaymentHash([0; 32]);
828 let invoice = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash(
829 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
830 Some(10_000), "test".to_string(), Duration::from_secs(1234567), 3600,
833 assert_eq!(invoice.amount_pico_btc(), Some(100_000));
834 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
835 assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
836 assert_eq!(invoice.payment_hash(), &sha256::Hash::from_slice(&payment_hash.0[..]).unwrap());
840 fn test_hints_includes_single_channels_to_nodes() {
841 let chanmon_cfgs = create_chanmon_cfgs(3);
842 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
843 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
844 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
846 let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
847 let chan_2_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
849 let mut scid_aliases = HashSet::new();
850 scid_aliases.insert(chan_1_0.0.short_channel_id_alias.unwrap());
851 scid_aliases.insert(chan_2_0.0.short_channel_id_alias.unwrap());
853 match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
857 fn test_hints_has_only_highest_inbound_capacity_channel() {
858 let chanmon_cfgs = create_chanmon_cfgs(2);
859 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
860 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
861 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
862 let _chan_1_0_low_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100_000, 0);
863 let chan_1_0_high_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 10_000_000, 0);
864 let _chan_1_0_medium_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 1_000_000, 0);
865 let mut scid_aliases = HashSet::new();
866 scid_aliases.insert(chan_1_0_high_inbound_capacity.0.short_channel_id_alias.unwrap());
867 match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
871 fn test_hints_has_only_online_channels() {
872 let chanmon_cfgs = create_chanmon_cfgs(4);
873 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
874 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
875 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
876 let chan_a = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 10_000_000, 0);
877 let chan_b = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 10_000_000, 0);
878 let _chan_c = create_unannounced_chan_between_nodes_with_value(&nodes, 3, 0, 1_000_000, 0);
880 // With all peers connected we should get all hints that have sufficient value
881 let mut scid_aliases = HashSet::new();
882 scid_aliases.insert(chan_a.0.short_channel_id_alias.unwrap());
883 scid_aliases.insert(chan_b.0.short_channel_id_alias.unwrap());
885 match_invoice_routes(Some(1_000_000_000), &nodes[0], scid_aliases.clone());
887 // With only one sufficient-value peer connected we should only get its hint
888 scid_aliases.remove(&chan_b.0.short_channel_id_alias.unwrap());
889 nodes[0].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
890 match_invoice_routes(Some(1_000_000_000), &nodes[0], scid_aliases.clone());
892 // If we don't have any sufficient-value peers connected we should get all hints with
893 // sufficient value, even though there is a connected insufficient-value peer.
894 scid_aliases.insert(chan_b.0.short_channel_id_alias.unwrap());
895 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
896 match_invoice_routes(Some(1_000_000_000), &nodes[0], scid_aliases);
900 fn test_forwarding_info_not_assigned_channel_excluded_from_hints() {
901 let chanmon_cfgs = create_chanmon_cfgs(3);
902 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
903 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
904 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
905 let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
907 // Create an unannonced channel between `nodes[2]` and `nodes[0]`, for which the
908 // `msgs::ChannelUpdate` is never handled for the node(s). As the `msgs::ChannelUpdate`
909 // is never handled, the `channel.counterparty.forwarding_info` is never assigned.
910 let mut private_chan_cfg = UserConfig::default();
911 private_chan_cfg.channel_handshake_config.announced_channel = false;
912 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();
913 let open_channel = get_event_msg!(nodes[2], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
914 nodes[0].node.handle_open_channel(&nodes[2].node.get_our_node_id(), &open_channel);
915 let accept_channel = get_event_msg!(nodes[0], MessageSendEvent::SendAcceptChannel, nodes[2].node.get_our_node_id());
916 nodes[2].node.handle_accept_channel(&nodes[0].node.get_our_node_id(), &accept_channel);
918 let tx = sign_funding_transaction(&nodes[2], &nodes[0], 1_000_000, temporary_channel_id);
920 let conf_height = core::cmp::max(nodes[2].best_block_info().1 + 1, nodes[0].best_block_info().1 + 1);
921 confirm_transaction_at(&nodes[2], &tx, conf_height);
922 connect_blocks(&nodes[2], CHAN_CONFIRM_DEPTH - 1);
923 confirm_transaction_at(&nodes[0], &tx, conf_height);
924 connect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
925 let as_channel_ready = get_event_msg!(nodes[2], MessageSendEvent::SendChannelReady, nodes[0].node.get_our_node_id());
926 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()));
927 get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
928 nodes[0].node.handle_channel_ready(&nodes[2].node.get_our_node_id(), &as_channel_ready);
929 get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[2].node.get_our_node_id());
930 expect_channel_ready_event(&nodes[0], &nodes[2].node.get_our_node_id());
931 expect_channel_ready_event(&nodes[2], &nodes[0].node.get_our_node_id());
933 // As `msgs::ChannelUpdate` was never handled for the participating node(s) of the second
934 // channel, the channel will never be assigned any `counterparty.forwarding_info`.
935 // Therefore only `chan_1_0` should be included in the hints.
936 let mut scid_aliases = HashSet::new();
937 scid_aliases.insert(chan_1_0.0.short_channel_id_alias.unwrap());
938 match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
942 fn test_no_hints_if_a_mix_between_public_and_private_channel_exists() {
943 let chanmon_cfgs = create_chanmon_cfgs(3);
944 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
945 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
946 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
947 let _chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
949 let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
950 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
951 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
953 // Ensure that the invoice doesn't include any route hints for any of `nodes[0]` channels,
954 // even though all channels between `nodes[1]` and `nodes[0]` are private, as there is a
955 // public channel between `nodes[2]` and `nodes[0]`
956 match_invoice_routes(Some(5000), &nodes[0], HashSet::new());
960 fn test_only_public_channels_includes_no_channels_in_hints() {
961 let chanmon_cfgs = create_chanmon_cfgs(3);
962 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
963 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
964 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
965 let chan_1_0 = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
966 nodes[0].node.handle_channel_update(&nodes[1].node.get_our_node_id(), &chan_1_0.0);
967 nodes[1].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_1_0.1);
969 let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
970 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
971 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
973 // As all of `nodes[0]` channels are public, no channels should be included in the hints
974 match_invoice_routes(Some(5000), &nodes[0], HashSet::new());
978 fn test_channels_with_lower_inbound_capacity_than_invoice_amt_hints_filtering() {
979 let chanmon_cfgs = create_chanmon_cfgs(3);
980 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
981 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
982 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
983 let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100_000, 0);
984 let chan_2_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 1_000_000, 0);
986 // As the invoice amt is 1 msat above chan_1_0's inbound capacity, it shouldn't be included
987 let mut scid_aliases_99_000_001_msat = HashSet::new();
988 scid_aliases_99_000_001_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
990 match_invoice_routes(Some(99_000_001), &nodes[0], scid_aliases_99_000_001_msat);
992 // As the invoice amt is exactly at chan_1_0's inbound capacity, it should be included
993 let mut scid_aliases_99_000_000_msat = HashSet::new();
994 scid_aliases_99_000_000_msat.insert(chan_1_0.0.short_channel_id_alias.unwrap());
995 scid_aliases_99_000_000_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
997 match_invoice_routes(Some(99_000_000), &nodes[0], scid_aliases_99_000_000_msat);
999 // As the invoice amt is above all channels' inbound capacity, they will still be included
1000 let mut scid_aliases_2_000_000_000_msat = HashSet::new();
1001 scid_aliases_2_000_000_000_msat.insert(chan_1_0.0.short_channel_id_alias.unwrap());
1002 scid_aliases_2_000_000_000_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
1004 match_invoice_routes(Some(2_000_000_000), &nodes[0], scid_aliases_2_000_000_000_msat);
1006 // An invoice with no specified amount should include all channels in the route hints.
1007 let mut scid_aliases_no_specified_amount = HashSet::new();
1008 scid_aliases_no_specified_amount.insert(chan_1_0.0.short_channel_id_alias.unwrap());
1009 scid_aliases_no_specified_amount.insert(chan_2_0.0.short_channel_id_alias.unwrap());
1011 match_invoice_routes(None, &nodes[0], scid_aliases_no_specified_amount);
1014 fn match_invoice_routes<'a, 'b: 'a, 'c: 'b>(
1015 invoice_amt: Option<u64>,
1016 invoice_node: &Node<'a, 'b, 'c>,
1017 mut chan_ids_to_match: HashSet<u64>
1019 let invoice = create_invoice_from_channelmanager_and_duration_since_epoch(
1020 &invoice_node.node, invoice_node.keys_manager, invoice_node.logger,
1021 Currency::BitcoinTestnet, invoice_amt, "test".to_string(), Duration::from_secs(1234567),
1022 3600, None).unwrap();
1023 let hints = invoice.private_routes();
1026 let hint_short_chan_id = (hint.0).0[0].short_channel_id;
1027 assert!(chan_ids_to_match.remove(&hint_short_chan_id));
1029 assert!(chan_ids_to_match.is_empty(), "Unmatched short channel ids: {:?}", chan_ids_to_match);
1033 #[cfg(feature = "std")]
1034 fn test_multi_node_receive() {
1035 do_test_multi_node_receive(true);
1036 do_test_multi_node_receive(false);
1039 #[cfg(feature = "std")]
1040 fn do_test_multi_node_receive(user_generated_pmt_hash: bool) {
1041 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1042 let seed_1 = [42 as u8; 32];
1043 let seed_2 = [43 as u8; 32];
1044 let cross_node_seed = [44 as u8; 32];
1045 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1046 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1047 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1048 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1049 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1050 let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1051 nodes[0].node.handle_channel_update(&nodes[1].node.get_our_node_id(), &chan_0_1.1);
1052 nodes[1].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_1.0);
1053 let chan_0_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1054 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_0_2.1);
1055 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_2.0);
1057 let payment_amt = 10_000;
1058 let route_hints = vec![
1059 nodes[1].node.get_phantom_route_hints(),
1060 nodes[2].node.get_phantom_route_hints(),
1063 let user_payment_preimage = PaymentPreimage([1; 32]);
1064 let payment_hash = if user_generated_pmt_hash {
1065 Some(PaymentHash(Sha256::hash(&user_payment_preimage.0[..]).into_inner()))
1069 let non_default_invoice_expiry_secs = 4200;
1072 crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestLogger>(
1073 Some(payment_amt), payment_hash, "test".to_string(), non_default_invoice_expiry_secs,
1074 route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager, &nodes[1].logger,
1075 Currency::BitcoinTestnet, None,
1077 let (payment_hash, payment_secret) = (PaymentHash(invoice.payment_hash().into_inner()), *invoice.payment_secret());
1078 let payment_preimage = if user_generated_pmt_hash {
1079 user_payment_preimage
1081 nodes[1].node.get_payment_preimage(payment_hash, payment_secret).unwrap()
1084 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
1085 assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
1086 assert_eq!(invoice.route_hints().len(), 2);
1087 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
1088 assert!(!invoice.features().unwrap().supports_basic_mpp());
1090 let payment_params = PaymentParameters::from_node_id(invoice.recover_payee_pub_key())
1091 .with_features(invoice.features().unwrap().clone())
1092 .with_route_hints(invoice.route_hints());
1093 let params = RouteParameters {
1095 final_value_msat: invoice.amount_milli_satoshis().unwrap(),
1096 final_cltv_expiry_delta: invoice.min_final_cltv_expiry_delta() as u32,
1098 let first_hops = nodes[0].node.list_usable_channels();
1099 let network_graph = &node_cfgs[0].network_graph;
1100 let logger = test_utils::TestLogger::new();
1101 let scorer = test_utils::TestScorer::with_penalty(0);
1102 let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
1103 let route = find_route(
1104 &nodes[0].node.get_our_node_id(), ¶ms, &network_graph,
1105 Some(&first_hops.iter().collect::<Vec<_>>()), &logger, &scorer, &random_seed_bytes
1107 let (payment_event, fwd_idx) = {
1108 let mut payment_hash = PaymentHash([0; 32]);
1109 payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
1110 nodes[0].node.send_payment(&route, payment_hash, &Some(invoice.payment_secret().clone()), PaymentId(payment_hash.0)).unwrap();
1111 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
1112 assert_eq!(added_monitors.len(), 1);
1113 added_monitors.clear();
1115 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1116 assert_eq!(events.len(), 1);
1117 let fwd_idx = match events[0] {
1118 MessageSendEvent::UpdateHTLCs { node_id, .. } => {
1119 if node_id == nodes[1].node.get_our_node_id() {
1123 _ => panic!("Unexpected event")
1125 (SendEvent::from_event(events.remove(0)), fwd_idx)
1127 nodes[fwd_idx].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1128 commitment_signed_dance!(nodes[fwd_idx], nodes[0], &payment_event.commitment_msg, false, true);
1130 // Note that we have to "forward pending HTLCs" twice before we see the PaymentClaimable as
1131 // this "emulates" the payment taking two hops, providing some privacy to make phantom node
1132 // payments "look real" by taking more time.
1133 expect_pending_htlcs_forwardable_ignore!(nodes[fwd_idx]);
1134 nodes[fwd_idx].node.process_pending_htlc_forwards();
1135 expect_pending_htlcs_forwardable_ignore!(nodes[fwd_idx]);
1136 nodes[fwd_idx].node.process_pending_htlc_forwards();
1138 let payment_preimage_opt = if user_generated_pmt_hash { None } else { Some(payment_preimage) };
1139 expect_payment_claimable!(&nodes[fwd_idx], payment_hash, payment_secret, payment_amt, payment_preimage_opt, route.paths[0].last().unwrap().pubkey);
1140 do_claim_payment_along_route(&nodes[0], &vec!(&vec!(&nodes[fwd_idx])[..]), false, payment_preimage);
1141 let events = nodes[0].node.get_and_clear_pending_events();
1142 assert_eq!(events.len(), 2);
1144 Event::PaymentSent { payment_preimage: ref ev_preimage, payment_hash: ref ev_hash, ref fee_paid_msat, .. } => {
1145 assert_eq!(payment_preimage, *ev_preimage);
1146 assert_eq!(payment_hash, *ev_hash);
1147 assert_eq!(fee_paid_msat, &Some(0));
1149 _ => panic!("Unexpected event")
1152 Event::PaymentPathSuccessful { payment_hash: hash, .. } => {
1153 assert_eq!(hash, Some(payment_hash));
1155 _ => panic!("Unexpected event")
1160 #[cfg(feature = "std")]
1161 fn test_multi_node_hints_has_htlc_min_max_values() {
1162 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1163 let seed_1 = [42 as u8; 32];
1164 let seed_2 = [43 as u8; 32];
1165 let cross_node_seed = [44 as u8; 32];
1166 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1167 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1168 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1169 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1170 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1172 create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1173 create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1175 let payment_amt = 20_000;
1176 let (payment_hash, _payment_secret) = nodes[1].node.create_inbound_payment(Some(payment_amt), 3600, None).unwrap();
1177 let route_hints = vec![
1178 nodes[1].node.get_phantom_route_hints(),
1179 nodes[2].node.get_phantom_route_hints(),
1182 let invoice = crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface,
1183 &test_utils::TestKeysInterface, &test_utils::TestLogger>(Some(payment_amt), Some(payment_hash),
1184 "test".to_string(), 3600, route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager,
1185 &nodes[1].logger, Currency::BitcoinTestnet, None).unwrap();
1187 let chan_0_1 = &nodes[1].node.list_usable_channels()[0];
1188 assert_eq!(invoice.route_hints()[0].0[0].htlc_minimum_msat, chan_0_1.inbound_htlc_minimum_msat);
1189 assert_eq!(invoice.route_hints()[0].0[0].htlc_maximum_msat, chan_0_1.inbound_htlc_maximum_msat);
1191 let chan_0_2 = &nodes[2].node.list_usable_channels()[0];
1192 assert_eq!(invoice.route_hints()[1].0[0].htlc_minimum_msat, chan_0_2.inbound_htlc_minimum_msat);
1193 assert_eq!(invoice.route_hints()[1].0[0].htlc_maximum_msat, chan_0_2.inbound_htlc_maximum_msat);
1197 #[cfg(feature = "std")]
1198 fn create_phantom_invoice_with_description_hash() {
1199 let chanmon_cfgs = create_chanmon_cfgs(3);
1200 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1201 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1202 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1204 let payment_amt = 20_000;
1205 let route_hints = vec![
1206 nodes[1].node.get_phantom_route_hints(),
1207 nodes[2].node.get_phantom_route_hints(),
1210 let description_hash = crate::Sha256(Hash::hash("Description hash phantom invoice".as_bytes()));
1211 let non_default_invoice_expiry_secs = 4200;
1212 let invoice = crate::utils::create_phantom_invoice_with_description_hash::<
1213 &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestLogger,
1215 Some(payment_amt), None, non_default_invoice_expiry_secs, description_hash,
1216 route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager, &nodes[1].logger,
1217 Currency::BitcoinTestnet, None,
1220 assert_eq!(invoice.amount_pico_btc(), Some(200_000));
1221 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
1222 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
1223 assert_eq!(invoice.description(), InvoiceDescription::Hash(&crate::Sha256(Sha256::hash("Description hash phantom invoice".as_bytes()))));
1227 #[cfg(feature = "std")]
1228 fn create_phantom_invoice_with_custom_payment_hash_and_custom_min_final_cltv_delta() {
1229 let chanmon_cfgs = create_chanmon_cfgs(3);
1230 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1231 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1232 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1234 let payment_amt = 20_000;
1235 let route_hints = vec![
1236 nodes[1].node.get_phantom_route_hints(),
1237 nodes[2].node.get_phantom_route_hints(),
1239 let user_payment_preimage = PaymentPreimage([1; 32]);
1240 let payment_hash = Some(PaymentHash(Sha256::hash(&user_payment_preimage.0[..]).into_inner()));
1241 let non_default_invoice_expiry_secs = 4200;
1242 let min_final_cltv_expiry_delta = Some(100);
1243 let invoice = crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface,
1244 &test_utils::TestKeysInterface, &test_utils::TestLogger>(Some(payment_amt), payment_hash,
1245 "".to_string(), non_default_invoice_expiry_secs, route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager,
1246 &nodes[1].logger, Currency::BitcoinTestnet, min_final_cltv_expiry_delta).unwrap();
1247 assert_eq!(invoice.amount_pico_btc(), Some(200_000));
1248 assert_eq!(invoice.min_final_cltv_expiry_delta(), (min_final_cltv_expiry_delta.unwrap() + 3) as u64);
1249 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
1253 #[cfg(feature = "std")]
1254 fn test_multi_node_hints_includes_single_channels_to_participating_nodes() {
1255 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1256 let seed_1 = [42 as u8; 32];
1257 let seed_2 = [43 as u8; 32];
1258 let cross_node_seed = [44 as u8; 32];
1259 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1260 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1261 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1262 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1263 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1265 let chan_0_1 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1266 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1268 let mut scid_aliases = HashSet::new();
1269 scid_aliases.insert(chan_0_1.0.short_channel_id_alias.unwrap());
1270 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1272 match_multi_node_invoice_routes(
1275 vec![&nodes[1], &nodes[2],],
1282 #[cfg(feature = "std")]
1283 fn test_multi_node_hints_includes_one_channel_of_each_counterparty_nodes_per_participating_node() {
1284 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1285 let seed_1 = [42 as u8; 32];
1286 let seed_2 = [43 as u8; 32];
1287 let cross_node_seed = [44 as u8; 32];
1288 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1289 chanmon_cfgs[3].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1290 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1291 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1292 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1294 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1295 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 1000000, 10001);
1296 let chan_1_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 3, 3_000_000, 10005);
1298 let mut scid_aliases = HashSet::new();
1299 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1300 scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1301 scid_aliases.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1303 match_multi_node_invoice_routes(
1306 vec![&nodes[2], &nodes[3],],
1313 #[cfg(feature = "std")]
1314 fn test_multi_node_forwarding_info_not_assigned_channel_excluded_from_hints() {
1315 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1316 let seed_1 = [42 as u8; 32];
1317 let seed_2 = [43 as u8; 32];
1318 let cross_node_seed = [44 as u8; 32];
1319 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1320 chanmon_cfgs[3].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1321 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1322 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1323 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1325 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1326 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 1000000, 10001);
1328 // Create an unannonced channel between `nodes[1]` and `nodes[3]`, for which the
1329 // `msgs::ChannelUpdate` is never handled for the node(s). As the `msgs::ChannelUpdate`
1330 // is never handled, the `channel.counterparty.forwarding_info` is never assigned.
1331 let mut private_chan_cfg = UserConfig::default();
1332 private_chan_cfg.channel_handshake_config.announced_channel = false;
1333 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();
1334 let open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[3].node.get_our_node_id());
1335 nodes[3].node.handle_open_channel(&nodes[1].node.get_our_node_id(), &open_channel);
1336 let accept_channel = get_event_msg!(nodes[3], MessageSendEvent::SendAcceptChannel, nodes[1].node.get_our_node_id());
1337 nodes[1].node.handle_accept_channel(&nodes[3].node.get_our_node_id(), &accept_channel);
1339 let tx = sign_funding_transaction(&nodes[1], &nodes[3], 1_000_000, temporary_channel_id);
1341 let conf_height = core::cmp::max(nodes[1].best_block_info().1 + 1, nodes[3].best_block_info().1 + 1);
1342 confirm_transaction_at(&nodes[1], &tx, conf_height);
1343 connect_blocks(&nodes[1], CHAN_CONFIRM_DEPTH - 1);
1344 confirm_transaction_at(&nodes[3], &tx, conf_height);
1345 connect_blocks(&nodes[3], CHAN_CONFIRM_DEPTH - 1);
1346 let as_channel_ready = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReady, nodes[3].node.get_our_node_id());
1347 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()));
1348 get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[3].node.get_our_node_id());
1349 nodes[3].node.handle_channel_ready(&nodes[1].node.get_our_node_id(), &as_channel_ready);
1350 get_event_msg!(nodes[3], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
1351 expect_channel_ready_event(&nodes[1], &nodes[3].node.get_our_node_id());
1352 expect_channel_ready_event(&nodes[3], &nodes[1].node.get_our_node_id());
1354 // As `msgs::ChannelUpdate` was never handled for the participating node(s) of the third
1355 // channel, the channel will never be assigned any `counterparty.forwarding_info`.
1356 // Therefore only `chan_0_3` should be included in the hints for `nodes[3]`.
1357 let mut scid_aliases = HashSet::new();
1358 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1359 scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1361 match_multi_node_invoice_routes(
1364 vec![&nodes[2], &nodes[3],],
1371 #[cfg(feature = "std")]
1372 fn test_multi_node_with_only_public_channels_hints_includes_only_phantom_route() {
1373 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1374 let seed_1 = [42 as u8; 32];
1375 let seed_2 = [43 as u8; 32];
1376 let cross_node_seed = [44 as u8; 32];
1377 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1378 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1379 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1380 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1381 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1383 let chan_0_1 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1385 let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
1386 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
1387 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
1389 // Hints should include `chan_0_1` from as `nodes[1]` only have private channels, but not
1390 // `chan_0_2` as `nodes[2]` only has public channels.
1391 let mut scid_aliases = HashSet::new();
1392 scid_aliases.insert(chan_0_1.0.short_channel_id_alias.unwrap());
1394 match_multi_node_invoice_routes(
1397 vec![&nodes[1], &nodes[2],],
1404 #[cfg(feature = "std")]
1405 fn test_multi_node_with_mixed_public_and_private_channel_hints_includes_only_phantom_route() {
1406 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1407 let seed_1 = [42 as u8; 32];
1408 let seed_2 = [43 as u8; 32];
1409 let cross_node_seed = [44 as u8; 32];
1410 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1411 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1412 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1413 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1414 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1416 let chan_0_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1417 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_0_2.1);
1418 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_2.0);
1419 let _chan_1_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001);
1421 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 100000, 10001);
1423 // Hints should include `chan_0_3` from as `nodes[3]` only have private channels, and no
1424 // channels for `nodes[2]` as it contains a mix of public and private channels.
1425 let mut scid_aliases = HashSet::new();
1426 scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1428 match_multi_node_invoice_routes(
1431 vec![&nodes[2], &nodes[3],],
1438 #[cfg(feature = "std")]
1439 fn test_multi_node_hints_has_only_highest_inbound_capacity_channel() {
1440 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1441 let seed_1 = [42 as u8; 32];
1442 let seed_2 = [43 as u8; 32];
1443 let cross_node_seed = [44 as u8; 32];
1444 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1445 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1446 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1447 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1448 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1450 let _chan_0_1_low_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0);
1451 let chan_0_1_high_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 0);
1452 let _chan_0_1_medium_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0);
1453 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1455 let mut scid_aliases = HashSet::new();
1456 scid_aliases.insert(chan_0_1_high_inbound_capacity.0.short_channel_id_alias.unwrap());
1457 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1459 match_multi_node_invoice_routes(
1462 vec![&nodes[1], &nodes[2],],
1469 #[cfg(feature = "std")]
1470 fn test_multi_node_channels_inbound_capacity_lower_than_invoice_amt_filtering() {
1471 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1472 let seed_1 = [42 as u8; 32];
1473 let seed_2 = [43 as u8; 32];
1474 let cross_node_seed = [44 as u8; 32];
1475 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1476 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1477 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1478 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1479 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1481 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 1_000_000, 0);
1482 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 100_000, 0);
1483 let chan_1_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 3, 200_000, 0);
1485 // Since the invoice 1 msat above chan_0_3's inbound capacity, it should be filtered out.
1486 let mut scid_aliases_99_000_001_msat = HashSet::new();
1487 scid_aliases_99_000_001_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1488 scid_aliases_99_000_001_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1490 match_multi_node_invoice_routes(
1493 vec![&nodes[2], &nodes[3],],
1494 scid_aliases_99_000_001_msat,
1498 // Since the invoice is exactly at chan_0_3's inbound capacity, it should be included.
1499 let mut scid_aliases_99_000_000_msat = HashSet::new();
1500 scid_aliases_99_000_000_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1501 scid_aliases_99_000_000_msat.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1502 scid_aliases_99_000_000_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1504 match_multi_node_invoice_routes(
1507 vec![&nodes[2], &nodes[3],],
1508 scid_aliases_99_000_000_msat,
1512 // Since the invoice is above all of `nodes[2]` channels' inbound capacity, all of
1513 // `nodes[2]` them should be included.
1514 let mut scid_aliases_300_000_000_msat = HashSet::new();
1515 scid_aliases_300_000_000_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1516 scid_aliases_300_000_000_msat.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1517 scid_aliases_300_000_000_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1519 match_multi_node_invoice_routes(
1522 vec![&nodes[2], &nodes[3],],
1523 scid_aliases_300_000_000_msat,
1527 // Since the no specified amount, all channels should included.
1528 let mut scid_aliases_no_specified_amount = HashSet::new();
1529 scid_aliases_no_specified_amount.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1530 scid_aliases_no_specified_amount.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1531 scid_aliases_no_specified_amount.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1533 match_multi_node_invoice_routes(
1536 vec![&nodes[2], &nodes[3],],
1537 scid_aliases_no_specified_amount,
1542 #[cfg(feature = "std")]
1543 fn match_multi_node_invoice_routes<'a, 'b: 'a, 'c: 'b>(
1544 invoice_amt: Option<u64>,
1545 invoice_node: &Node<'a, 'b, 'c>,
1546 network_multi_nodes: Vec<&Node<'a, 'b, 'c>>,
1547 mut chan_ids_to_match: HashSet<u64>,
1548 nodes_contains_public_channels: bool
1550 let phantom_route_hints = network_multi_nodes.iter()
1551 .map(|node| node.node.get_phantom_route_hints())
1552 .collect::<Vec<PhantomRouteHints>>();
1553 let phantom_scids = phantom_route_hints.iter()
1554 .map(|route_hint| route_hint.phantom_scid)
1555 .collect::<HashSet<u64>>();
1557 let invoice = crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface,
1558 &test_utils::TestKeysInterface, &test_utils::TestLogger>(invoice_amt, None, "test".to_string(),
1559 3600, phantom_route_hints, &invoice_node.keys_manager, &invoice_node.keys_manager,
1560 &invoice_node.logger, Currency::BitcoinTestnet, None).unwrap();
1562 let invoice_hints = invoice.private_routes();
1564 for hint in invoice_hints {
1565 let hints = &(hint.0).0;
1568 assert!(nodes_contains_public_channels);
1569 let phantom_scid = hints[0].short_channel_id;
1570 assert!(phantom_scids.contains(&phantom_scid));
1573 let hint_short_chan_id = hints[0].short_channel_id;
1574 assert!(chan_ids_to_match.remove(&hint_short_chan_id));
1575 let phantom_scid = hints[1].short_channel_id;
1576 assert!(phantom_scids.contains(&phantom_scid));
1578 _ => panic!("Incorrect hint length generated")
1581 assert!(chan_ids_to_match.is_empty(), "Unmatched short channel ids: {:?}", chan_ids_to_match);
1585 fn test_create_invoice_fails_with_invalid_custom_min_final_cltv_expiry_delta() {
1586 let chanmon_cfgs = create_chanmon_cfgs(2);
1587 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1588 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1589 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1590 let result = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch(
1591 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
1592 Some(10_000), "Some description".into(), Duration::from_secs(1234567), 3600, Some(MIN_FINAL_CLTV_EXPIRY_DELTA - 4),
1595 Err(SignOrCreationError::CreationError(CreationError::MinFinalCltvExpiryDeltaTooShort)) => {},