1 // This file is Copyright its original authors, visible in version control
4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
7 // You may not use this file except in accordance with one or both of these
10 //! The [`NetworkGraph`] stores the network gossip and [`P2PGossipSync`] fetches it from peers
12 use bitcoin::secp256k1::constants::PUBLIC_KEY_SIZE;
13 use bitcoin::secp256k1::PublicKey;
14 use bitcoin::secp256k1::Secp256k1;
15 use bitcoin::secp256k1;
17 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
18 use bitcoin::hashes::Hash;
19 use bitcoin::hash_types::BlockHash;
21 use crate::ln::features::{ChannelFeatures, NodeFeatures, InitFeatures};
22 use crate::ln::msgs::{DecodeError, ErrorAction, Init, LightningError, RoutingMessageHandler, NetAddress, MAX_VALUE_MSAT};
23 use crate::ln::msgs::{ChannelAnnouncement, ChannelUpdate, NodeAnnouncement, GossipTimestampFilter};
24 use crate::ln::msgs::{QueryChannelRange, ReplyChannelRange, QueryShortChannelIds, ReplyShortChannelIdsEnd};
26 use crate::routing::utxo::{self, UtxoLookup};
27 use crate::util::ser::{Readable, ReadableArgs, Writeable, Writer, MaybeReadable};
28 use crate::util::logger::{Logger, Level};
29 use crate::util::events::{MessageSendEvent, MessageSendEventsProvider};
30 use crate::util::scid_utils::{block_from_scid, scid_from_parts, MAX_SCID_BLOCK};
31 use crate::util::string::PrintableString;
32 use crate::util::indexed_map::{IndexedMap, Entry as IndexedMapEntry};
35 use crate::io_extras::{copy, sink};
36 use crate::prelude::*;
38 use crate::sync::{RwLock, RwLockReadGuard};
39 #[cfg(feature = "std")]
40 use core::sync::atomic::{AtomicUsize, Ordering};
41 use crate::sync::Mutex;
42 use core::ops::{Bound, Deref};
44 #[cfg(feature = "std")]
45 use std::time::{SystemTime, UNIX_EPOCH};
47 /// We remove stale channel directional info two weeks after the last update, per BOLT 7's
49 const STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS: u64 = 60 * 60 * 24 * 14;
51 /// We stop tracking the removal of permanently failed nodes and channels one week after removal
52 const REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS: u64 = 60 * 60 * 24 * 7;
54 /// The maximum number of extra bytes which we do not understand in a gossip message before we will
55 /// refuse to relay the message.
56 const MAX_EXCESS_BYTES_FOR_RELAY: usize = 1024;
58 /// Maximum number of short_channel_ids that will be encoded in one gossip reply message.
59 /// This value ensures a reply fits within the 65k payload limit and is consistent with other implementations.
60 const MAX_SCIDS_PER_REPLY: usize = 8000;
62 /// Represents the compressed public key of a node
63 #[derive(Clone, Copy)]
64 pub struct NodeId([u8; PUBLIC_KEY_SIZE]);
67 /// Create a new NodeId from a public key
68 pub fn from_pubkey(pubkey: &PublicKey) -> Self {
69 NodeId(pubkey.serialize())
72 /// Get the public key slice from this NodeId
73 pub fn as_slice(&self) -> &[u8] {
78 impl fmt::Debug for NodeId {
79 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
80 write!(f, "NodeId({})", log_bytes!(self.0))
83 impl fmt::Display for NodeId {
84 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
85 write!(f, "{}", log_bytes!(self.0))
89 impl core::hash::Hash for NodeId {
90 fn hash<H: core::hash::Hasher>(&self, hasher: &mut H) {
97 impl PartialEq for NodeId {
98 fn eq(&self, other: &Self) -> bool {
99 self.0[..] == other.0[..]
103 impl cmp::PartialOrd for NodeId {
104 fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
105 Some(self.cmp(other))
109 impl Ord for NodeId {
110 fn cmp(&self, other: &Self) -> cmp::Ordering {
111 self.0[..].cmp(&other.0[..])
115 impl Writeable for NodeId {
116 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
117 writer.write_all(&self.0)?;
122 impl Readable for NodeId {
123 fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
124 let mut buf = [0; PUBLIC_KEY_SIZE];
125 reader.read_exact(&mut buf)?;
130 /// Represents the network as nodes and channels between them
131 pub struct NetworkGraph<L: Deref> where L::Target: Logger {
132 secp_ctx: Secp256k1<secp256k1::VerifyOnly>,
133 last_rapid_gossip_sync_timestamp: Mutex<Option<u32>>,
134 genesis_hash: BlockHash,
136 // Lock order: channels -> nodes
137 channels: RwLock<IndexedMap<u64, ChannelInfo>>,
138 nodes: RwLock<IndexedMap<NodeId, NodeInfo>>,
139 // Lock order: removed_channels -> removed_nodes
141 // NOTE: In the following `removed_*` maps, we use seconds since UNIX epoch to track time instead
142 // of `std::time::Instant`s for a few reasons:
143 // * We want it to be possible to do tracking in no-std environments where we can compare
144 // a provided current UNIX timestamp with the time at which we started tracking.
145 // * In the future, if we decide to persist these maps, they will already be serializable.
146 // * Although we lose out on the platform's monotonic clock, the system clock in a std
147 // environment should be practical over the time period we are considering (on the order of a
150 /// Keeps track of short channel IDs for channels we have explicitly removed due to permanent
151 /// failure so that we don't resync them from gossip. Each SCID is mapped to the time (in seconds)
152 /// it was removed so that once some time passes, we can potentially resync it from gossip again.
153 removed_channels: Mutex<HashMap<u64, Option<u64>>>,
154 /// Keeps track of `NodeId`s we have explicitly removed due to permanent failure so that we don't
155 /// resync them from gossip. Each `NodeId` is mapped to the time (in seconds) it was removed so
156 /// that once some time passes, we can potentially resync it from gossip again.
157 removed_nodes: Mutex<HashMap<NodeId, Option<u64>>>,
158 /// Announcement messages which are awaiting an on-chain lookup to be processed.
159 pub(super) pending_checks: utxo::PendingChecks,
162 /// A read-only view of [`NetworkGraph`].
163 pub struct ReadOnlyNetworkGraph<'a> {
164 channels: RwLockReadGuard<'a, IndexedMap<u64, ChannelInfo>>,
165 nodes: RwLockReadGuard<'a, IndexedMap<NodeId, NodeInfo>>,
168 /// Update to the [`NetworkGraph`] based on payment failure information conveyed via the Onion
169 /// return packet by a node along the route. See [BOLT #4] for details.
171 /// [BOLT #4]: https://github.com/lightning/bolts/blob/master/04-onion-routing.md
172 #[derive(Clone, Debug, PartialEq, Eq)]
173 pub enum NetworkUpdate {
174 /// An error indicating a `channel_update` messages should be applied via
175 /// [`NetworkGraph::update_channel`].
176 ChannelUpdateMessage {
177 /// The update to apply via [`NetworkGraph::update_channel`].
180 /// An error indicating that a channel failed to route a payment, which should be applied via
181 /// [`NetworkGraph::channel_failed`].
183 /// The short channel id of the closed channel.
184 short_channel_id: u64,
185 /// Whether the channel should be permanently removed or temporarily disabled until a new
186 /// `channel_update` message is received.
189 /// An error indicating that a node failed to route a payment, which should be applied via
190 /// [`NetworkGraph::node_failed_permanent`] if permanent.
192 /// The node id of the failed node.
194 /// Whether the node should be permanently removed from consideration or can be restored
195 /// when a new `channel_update` message is received.
200 impl_writeable_tlv_based_enum_upgradable!(NetworkUpdate,
201 (0, ChannelUpdateMessage) => {
204 (2, ChannelFailure) => {
205 (0, short_channel_id, required),
206 (2, is_permanent, required),
208 (4, NodeFailure) => {
209 (0, node_id, required),
210 (2, is_permanent, required),
214 /// Receives and validates network updates from peers,
215 /// stores authentic and relevant data as a network graph.
216 /// This network graph is then used for routing payments.
217 /// Provides interface to help with initial routing sync by
218 /// serving historical announcements.
219 pub struct P2PGossipSync<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref>
220 where U::Target: UtxoLookup, L::Target: Logger
223 utxo_lookup: Option<U>,
224 #[cfg(feature = "std")]
225 full_syncs_requested: AtomicUsize,
226 pending_events: Mutex<Vec<MessageSendEvent>>,
230 impl<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref> P2PGossipSync<G, U, L>
231 where U::Target: UtxoLookup, L::Target: Logger
233 /// Creates a new tracker of the actual state of the network of channels and nodes,
234 /// assuming an existing Network Graph.
235 /// UTXO lookup is used to make sure announced channels exist on-chain, channel data is
236 /// correct, and the announcement is signed with channel owners' keys.
237 pub fn new(network_graph: G, utxo_lookup: Option<U>, logger: L) -> Self {
240 #[cfg(feature = "std")]
241 full_syncs_requested: AtomicUsize::new(0),
243 pending_events: Mutex::new(vec![]),
248 /// Adds a provider used to check new announcements. Does not affect
249 /// existing announcements unless they are updated.
250 /// Add, update or remove the provider would replace the current one.
251 pub fn add_utxo_lookup(&mut self, utxo_lookup: Option<U>) {
252 self.utxo_lookup = utxo_lookup;
255 /// Gets a reference to the underlying [`NetworkGraph`] which was provided in
256 /// [`P2PGossipSync::new`].
258 /// (C-not exported) as bindings don't support a reference-to-a-reference yet
259 pub fn network_graph(&self) -> &G {
263 #[cfg(feature = "std")]
264 /// Returns true when a full routing table sync should be performed with a peer.
265 fn should_request_full_sync(&self, _node_id: &PublicKey) -> bool {
266 //TODO: Determine whether to request a full sync based on the network map.
267 const FULL_SYNCS_TO_REQUEST: usize = 5;
268 if self.full_syncs_requested.load(Ordering::Acquire) < FULL_SYNCS_TO_REQUEST {
269 self.full_syncs_requested.fetch_add(1, Ordering::AcqRel);
277 impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
278 /// Handles any network updates originating from [`Event`]s.
280 /// [`Event`]: crate::util::events::Event
281 pub fn handle_network_update(&self, network_update: &NetworkUpdate) {
282 match *network_update {
283 NetworkUpdate::ChannelUpdateMessage { ref msg } => {
284 let short_channel_id = msg.contents.short_channel_id;
285 let is_enabled = msg.contents.flags & (1 << 1) != (1 << 1);
286 let status = if is_enabled { "enabled" } else { "disabled" };
287 log_debug!(self.logger, "Updating channel with channel_update from a payment failure. Channel {} is {}.", short_channel_id, status);
288 let _ = self.update_channel(msg);
290 NetworkUpdate::ChannelFailure { short_channel_id, is_permanent } => {
291 let action = if is_permanent { "Removing" } else { "Disabling" };
292 log_debug!(self.logger, "{} channel graph entry for {} due to a payment failure.", action, short_channel_id);
293 self.channel_failed(short_channel_id, is_permanent);
295 NetworkUpdate::NodeFailure { ref node_id, is_permanent } => {
297 log_debug!(self.logger,
298 "Removed node graph entry for {} due to a payment failure.", log_pubkey!(node_id));
299 self.node_failed_permanent(node_id);
306 macro_rules! secp_verify_sig {
307 ( $secp_ctx: expr, $msg: expr, $sig: expr, $pubkey: expr, $msg_type: expr ) => {
308 match $secp_ctx.verify_ecdsa($msg, $sig, $pubkey) {
311 return Err(LightningError {
312 err: format!("Invalid signature on {} message", $msg_type),
313 action: ErrorAction::SendWarningMessage {
314 msg: msgs::WarningMessage {
316 data: format!("Invalid signature on {} message", $msg_type),
318 log_level: Level::Trace,
326 macro_rules! get_pubkey_from_node_id {
327 ( $node_id: expr, $msg_type: expr ) => {
328 PublicKey::from_slice($node_id.as_slice())
329 .map_err(|_| LightningError {
330 err: format!("Invalid public key on {} message", $msg_type),
331 action: ErrorAction::SendWarningMessage {
332 msg: msgs::WarningMessage {
334 data: format!("Invalid public key on {} message", $msg_type),
336 log_level: Level::Trace
342 impl<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref> RoutingMessageHandler for P2PGossipSync<G, U, L>
343 where U::Target: UtxoLookup, L::Target: Logger
345 fn handle_node_announcement(&self, msg: &msgs::NodeAnnouncement) -> Result<bool, LightningError> {
346 self.network_graph.update_node_from_announcement(msg)?;
347 Ok(msg.contents.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY &&
348 msg.contents.excess_address_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY &&
349 msg.contents.excess_data.len() + msg.contents.excess_address_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY)
352 fn handle_channel_announcement(&self, msg: &msgs::ChannelAnnouncement) -> Result<bool, LightningError> {
353 self.network_graph.update_channel_from_announcement(msg, &self.utxo_lookup)?;
354 log_gossip!(self.logger, "Added channel_announcement for {}{}", msg.contents.short_channel_id, if !msg.contents.excess_data.is_empty() { " with excess uninterpreted data!" } else { "" });
355 Ok(msg.contents.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY)
358 fn handle_channel_update(&self, msg: &msgs::ChannelUpdate) -> Result<bool, LightningError> {
359 self.network_graph.update_channel(msg)?;
360 Ok(msg.contents.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY)
363 fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)> {
364 let channels = self.network_graph.channels.read().unwrap();
365 for (_, ref chan) in channels.range(starting_point..) {
366 if chan.announcement_message.is_some() {
367 let chan_announcement = chan.announcement_message.clone().unwrap();
368 let mut one_to_two_announcement: Option<msgs::ChannelUpdate> = None;
369 let mut two_to_one_announcement: Option<msgs::ChannelUpdate> = None;
370 if let Some(one_to_two) = chan.one_to_two.as_ref() {
371 one_to_two_announcement = one_to_two.last_update_message.clone();
373 if let Some(two_to_one) = chan.two_to_one.as_ref() {
374 two_to_one_announcement = two_to_one.last_update_message.clone();
376 return Some((chan_announcement, one_to_two_announcement, two_to_one_announcement));
378 // TODO: We may end up sending un-announced channel_updates if we are sending
379 // initial sync data while receiving announce/updates for this channel.
385 fn get_next_node_announcement(&self, starting_point: Option<&NodeId>) -> Option<NodeAnnouncement> {
386 let nodes = self.network_graph.nodes.read().unwrap();
387 let iter = if let Some(node_id) = starting_point {
388 nodes.range((Bound::Excluded(node_id), Bound::Unbounded))
392 for (_, ref node) in iter {
393 if let Some(node_info) = node.announcement_info.as_ref() {
394 if let Some(msg) = node_info.announcement_message.clone() {
402 /// Initiates a stateless sync of routing gossip information with a peer
403 /// using gossip_queries. The default strategy used by this implementation
404 /// is to sync the full block range with several peers.
406 /// We should expect one or more reply_channel_range messages in response
407 /// to our query_channel_range. Each reply will enqueue a query_scid message
408 /// to request gossip messages for each channel. The sync is considered complete
409 /// when the final reply_scids_end message is received, though we are not
410 /// tracking this directly.
411 fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &Init) -> Result<(), ()> {
412 // We will only perform a sync with peers that support gossip_queries.
413 if !init_msg.features.supports_gossip_queries() {
414 // Don't disconnect peers for not supporting gossip queries. We may wish to have
415 // channels with peers even without being able to exchange gossip.
419 // The lightning network's gossip sync system is completely broken in numerous ways.
421 // Given no broadly-available set-reconciliation protocol, the only reasonable approach is
422 // to do a full sync from the first few peers we connect to, and then receive gossip
423 // updates from all our peers normally.
425 // Originally, we could simply tell a peer to dump us the entire gossip table on startup,
426 // wasting lots of bandwidth but ensuring we have the full network graph. After the initial
427 // dump peers would always send gossip and we'd stay up-to-date with whatever our peer has
430 // In order to reduce the bandwidth waste, "gossip queries" were introduced, allowing you
431 // to ask for the SCIDs of all channels in your peer's routing graph, and then only request
432 // channel data which you are missing. Except there was no way at all to identify which
433 // `channel_update`s you were missing, so you still had to request everything, just in a
434 // very complicated way with some queries instead of just getting the dump.
436 // Later, an option was added to fetch the latest timestamps of the `channel_update`s to
437 // make efficient sync possible, however it has yet to be implemented in lnd, which makes
438 // relying on it useless.
440 // After gossip queries were introduced, support for receiving a full gossip table dump on
441 // connection was removed from several nodes, making it impossible to get a full sync
442 // without using the "gossip queries" messages.
444 // Once you opt into "gossip queries" the only way to receive any gossip updates that a
445 // peer receives after you connect, you must send a `gossip_timestamp_filter` message. This
446 // message, as the name implies, tells the peer to not forward any gossip messages with a
447 // timestamp older than a given value (not the time the peer received the filter, but the
448 // timestamp in the update message, which is often hours behind when the peer received the
451 // Obnoxiously, `gossip_timestamp_filter` isn't *just* a filter, but its also a request for
452 // your peer to send you the full routing graph (subject to the filter). Thus, in order to
453 // tell a peer to send you any updates as it sees them, you have to also ask for the full
454 // routing graph to be synced. If you set a timestamp filter near the current time, peers
455 // will simply not forward any new updates they see to you which were generated some time
456 // ago (which is not uncommon). If you instead set a timestamp filter near 0 (or two weeks
457 // ago), you will always get the full routing graph from all your peers.
459 // Most lightning nodes today opt to simply turn off receiving gossip data which only
460 // propagated some time after it was generated, and, worse, often disable gossiping with
461 // several peers after their first connection. The second behavior can cause gossip to not
462 // propagate fully if there are cuts in the gossiping subgraph.
464 // In an attempt to cut a middle ground between always fetching the full graph from all of
465 // our peers and never receiving gossip from peers at all, we send all of our peers a
466 // `gossip_timestamp_filter`, with the filter time set either two weeks ago or an hour ago.
468 // For no-std builds, we bury our head in the sand and do a full sync on each connection.
469 #[allow(unused_mut, unused_assignments)]
470 let mut gossip_start_time = 0;
471 #[cfg(feature = "std")]
473 gossip_start_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
474 if self.should_request_full_sync(&their_node_id) {
475 gossip_start_time -= 60 * 60 * 24 * 7 * 2; // 2 weeks ago
477 gossip_start_time -= 60 * 60; // an hour ago
481 let mut pending_events = self.pending_events.lock().unwrap();
482 pending_events.push(MessageSendEvent::SendGossipTimestampFilter {
483 node_id: their_node_id.clone(),
484 msg: GossipTimestampFilter {
485 chain_hash: self.network_graph.genesis_hash,
486 first_timestamp: gossip_start_time as u32, // 2106 issue!
487 timestamp_range: u32::max_value(),
493 fn handle_reply_channel_range(&self, _their_node_id: &PublicKey, _msg: ReplyChannelRange) -> Result<(), LightningError> {
494 // We don't make queries, so should never receive replies. If, in the future, the set
495 // reconciliation extensions to gossip queries become broadly supported, we should revert
496 // this code to its state pre-0.0.106.
500 fn handle_reply_short_channel_ids_end(&self, _their_node_id: &PublicKey, _msg: ReplyShortChannelIdsEnd) -> Result<(), LightningError> {
501 // We don't make queries, so should never receive replies. If, in the future, the set
502 // reconciliation extensions to gossip queries become broadly supported, we should revert
503 // this code to its state pre-0.0.106.
507 /// Processes a query from a peer by finding announced/public channels whose funding UTXOs
508 /// are in the specified block range. Due to message size limits, large range
509 /// queries may result in several reply messages. This implementation enqueues
510 /// all reply messages into pending events. Each message will allocate just under 65KiB. A full
511 /// sync of the public routing table with 128k channels will generated 16 messages and allocate ~1MB.
512 /// Logic can be changed to reduce allocation if/when a full sync of the routing table impacts
513 /// memory constrained systems.
514 fn handle_query_channel_range(&self, their_node_id: &PublicKey, msg: QueryChannelRange) -> Result<(), LightningError> {
515 log_debug!(self.logger, "Handling query_channel_range peer={}, first_blocknum={}, number_of_blocks={}", log_pubkey!(their_node_id), msg.first_blocknum, msg.number_of_blocks);
517 let inclusive_start_scid = scid_from_parts(msg.first_blocknum as u64, 0, 0);
519 // We might receive valid queries with end_blocknum that would overflow SCID conversion.
520 // If so, we manually cap the ending block to avoid this overflow.
521 let exclusive_end_scid = scid_from_parts(cmp::min(msg.end_blocknum() as u64, MAX_SCID_BLOCK), 0, 0);
523 // Per spec, we must reply to a query. Send an empty message when things are invalid.
524 if msg.chain_hash != self.network_graph.genesis_hash || inclusive_start_scid.is_err() || exclusive_end_scid.is_err() || msg.number_of_blocks == 0 {
525 let mut pending_events = self.pending_events.lock().unwrap();
526 pending_events.push(MessageSendEvent::SendReplyChannelRange {
527 node_id: their_node_id.clone(),
528 msg: ReplyChannelRange {
529 chain_hash: msg.chain_hash.clone(),
530 first_blocknum: msg.first_blocknum,
531 number_of_blocks: msg.number_of_blocks,
533 short_channel_ids: vec![],
536 return Err(LightningError {
537 err: String::from("query_channel_range could not be processed"),
538 action: ErrorAction::IgnoreError,
542 // Creates channel batches. We are not checking if the channel is routable
543 // (has at least one update). A peer may still want to know the channel
544 // exists even if its not yet routable.
545 let mut batches: Vec<Vec<u64>> = vec![Vec::with_capacity(MAX_SCIDS_PER_REPLY)];
546 let channels = self.network_graph.channels.read().unwrap();
547 for (_, ref chan) in channels.range(inclusive_start_scid.unwrap()..exclusive_end_scid.unwrap()) {
548 if let Some(chan_announcement) = &chan.announcement_message {
549 // Construct a new batch if last one is full
550 if batches.last().unwrap().len() == batches.last().unwrap().capacity() {
551 batches.push(Vec::with_capacity(MAX_SCIDS_PER_REPLY));
554 let batch = batches.last_mut().unwrap();
555 batch.push(chan_announcement.contents.short_channel_id);
560 let mut pending_events = self.pending_events.lock().unwrap();
561 let batch_count = batches.len();
562 let mut prev_batch_endblock = msg.first_blocknum;
563 for (batch_index, batch) in batches.into_iter().enumerate() {
564 // Per spec, the initial `first_blocknum` needs to be <= the query's `first_blocknum`
565 // and subsequent `first_blocknum`s must be >= the prior reply's `first_blocknum`.
567 // Additionally, c-lightning versions < 0.10 require that the `first_blocknum` of each
568 // reply is >= the previous reply's `first_blocknum` and either exactly the previous
569 // reply's `first_blocknum + number_of_blocks` or exactly one greater. This is a
570 // significant diversion from the requirements set by the spec, and, in case of blocks
571 // with no channel opens (e.g. empty blocks), requires that we use the previous value
572 // and *not* derive the first_blocknum from the actual first block of the reply.
573 let first_blocknum = prev_batch_endblock;
575 // Each message carries the number of blocks (from the `first_blocknum`) its contents
576 // fit in. Though there is no requirement that we use exactly the number of blocks its
577 // contents are from, except for the bogus requirements c-lightning enforces, above.
579 // Per spec, the last end block (ie `first_blocknum + number_of_blocks`) needs to be
580 // >= the query's end block. Thus, for the last reply, we calculate the difference
581 // between the query's end block and the start of the reply.
583 // Overflow safe since end_blocknum=msg.first_block_num+msg.number_of_blocks and
584 // first_blocknum will be either msg.first_blocknum or a higher block height.
585 let (sync_complete, number_of_blocks) = if batch_index == batch_count-1 {
586 (true, msg.end_blocknum() - first_blocknum)
588 // Prior replies should use the number of blocks that fit into the reply. Overflow
589 // safe since first_blocknum is always <= last SCID's block.
591 (false, block_from_scid(batch.last().unwrap()) - first_blocknum)
594 prev_batch_endblock = first_blocknum + number_of_blocks;
596 pending_events.push(MessageSendEvent::SendReplyChannelRange {
597 node_id: their_node_id.clone(),
598 msg: ReplyChannelRange {
599 chain_hash: msg.chain_hash.clone(),
603 short_channel_ids: batch,
611 fn handle_query_short_channel_ids(&self, _their_node_id: &PublicKey, _msg: QueryShortChannelIds) -> Result<(), LightningError> {
614 err: String::from("Not implemented"),
615 action: ErrorAction::IgnoreError,
619 fn provided_node_features(&self) -> NodeFeatures {
620 let mut features = NodeFeatures::empty();
621 features.set_gossip_queries_optional();
625 fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures {
626 let mut features = InitFeatures::empty();
627 features.set_gossip_queries_optional();
632 impl<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref> MessageSendEventsProvider for P2PGossipSync<G, U, L>
634 U::Target: UtxoLookup,
637 fn get_and_clear_pending_msg_events(&self) -> Vec<MessageSendEvent> {
638 let mut ret = Vec::new();
639 let mut pending_events = self.pending_events.lock().unwrap();
640 core::mem::swap(&mut ret, &mut pending_events);
645 #[derive(Clone, Debug, PartialEq, Eq)]
646 /// Details about one direction of a channel as received within a [`ChannelUpdate`].
647 pub struct ChannelUpdateInfo {
648 /// When the last update to the channel direction was issued.
649 /// Value is opaque, as set in the announcement.
650 pub last_update: u32,
651 /// Whether the channel can be currently used for payments (in this one direction).
653 /// The difference in CLTV values that you must have when routing through this channel.
654 pub cltv_expiry_delta: u16,
655 /// The minimum value, which must be relayed to the next hop via the channel
656 pub htlc_minimum_msat: u64,
657 /// The maximum value which may be relayed to the next hop via the channel.
658 pub htlc_maximum_msat: u64,
659 /// Fees charged when the channel is used for routing
660 pub fees: RoutingFees,
661 /// Most recent update for the channel received from the network
662 /// Mostly redundant with the data we store in fields explicitly.
663 /// Everything else is useful only for sending out for initial routing sync.
664 /// Not stored if contains excess data to prevent DoS.
665 pub last_update_message: Option<ChannelUpdate>,
668 impl fmt::Display for ChannelUpdateInfo {
669 fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
670 write!(f, "last_update {}, enabled {}, cltv_expiry_delta {}, htlc_minimum_msat {}, fees {:?}", self.last_update, self.enabled, self.cltv_expiry_delta, self.htlc_minimum_msat, self.fees)?;
675 impl Writeable for ChannelUpdateInfo {
676 fn write<W: crate::util::ser::Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
677 write_tlv_fields!(writer, {
678 (0, self.last_update, required),
679 (2, self.enabled, required),
680 (4, self.cltv_expiry_delta, required),
681 (6, self.htlc_minimum_msat, required),
682 // Writing htlc_maximum_msat as an Option<u64> is required to maintain backwards
683 // compatibility with LDK versions prior to v0.0.110.
684 (8, Some(self.htlc_maximum_msat), required),
685 (10, self.fees, required),
686 (12, self.last_update_message, required),
692 impl Readable for ChannelUpdateInfo {
693 fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
694 _init_tlv_field_var!(last_update, required);
695 _init_tlv_field_var!(enabled, required);
696 _init_tlv_field_var!(cltv_expiry_delta, required);
697 _init_tlv_field_var!(htlc_minimum_msat, required);
698 _init_tlv_field_var!(htlc_maximum_msat, option);
699 _init_tlv_field_var!(fees, required);
700 _init_tlv_field_var!(last_update_message, required);
702 read_tlv_fields!(reader, {
703 (0, last_update, required),
704 (2, enabled, required),
705 (4, cltv_expiry_delta, required),
706 (6, htlc_minimum_msat, required),
707 (8, htlc_maximum_msat, required),
708 (10, fees, required),
709 (12, last_update_message, required)
712 if let Some(htlc_maximum_msat) = htlc_maximum_msat {
713 Ok(ChannelUpdateInfo {
714 last_update: _init_tlv_based_struct_field!(last_update, required),
715 enabled: _init_tlv_based_struct_field!(enabled, required),
716 cltv_expiry_delta: _init_tlv_based_struct_field!(cltv_expiry_delta, required),
717 htlc_minimum_msat: _init_tlv_based_struct_field!(htlc_minimum_msat, required),
719 fees: _init_tlv_based_struct_field!(fees, required),
720 last_update_message: _init_tlv_based_struct_field!(last_update_message, required),
723 Err(DecodeError::InvalidValue)
728 #[derive(Clone, Debug, PartialEq, Eq)]
729 /// Details about a channel (both directions).
730 /// Received within a channel announcement.
731 pub struct ChannelInfo {
732 /// Protocol features of a channel communicated during its announcement
733 pub features: ChannelFeatures,
734 /// Source node of the first direction of a channel
735 pub node_one: NodeId,
736 /// Details about the first direction of a channel
737 pub one_to_two: Option<ChannelUpdateInfo>,
738 /// Source node of the second direction of a channel
739 pub node_two: NodeId,
740 /// Details about the second direction of a channel
741 pub two_to_one: Option<ChannelUpdateInfo>,
742 /// The channel capacity as seen on-chain, if chain lookup is available.
743 pub capacity_sats: Option<u64>,
744 /// An initial announcement of the channel
745 /// Mostly redundant with the data we store in fields explicitly.
746 /// Everything else is useful only for sending out for initial routing sync.
747 /// Not stored if contains excess data to prevent DoS.
748 pub announcement_message: Option<ChannelAnnouncement>,
749 /// The timestamp when we received the announcement, if we are running with feature = "std"
750 /// (which we can probably assume we are - no-std environments probably won't have a full
751 /// network graph in memory!).
752 announcement_received_time: u64,
756 /// Returns a [`DirectedChannelInfo`] for the channel directed to the given `target` from a
757 /// returned `source`, or `None` if `target` is not one of the channel's counterparties.
758 pub fn as_directed_to(&self, target: &NodeId) -> Option<(DirectedChannelInfo, &NodeId)> {
759 let (direction, source) = {
760 if target == &self.node_one {
761 (self.two_to_one.as_ref(), &self.node_two)
762 } else if target == &self.node_two {
763 (self.one_to_two.as_ref(), &self.node_one)
768 direction.map(|dir| (DirectedChannelInfo::new(self, dir), source))
771 /// Returns a [`DirectedChannelInfo`] for the channel directed from the given `source` to a
772 /// returned `target`, or `None` if `source` is not one of the channel's counterparties.
773 pub fn as_directed_from(&self, source: &NodeId) -> Option<(DirectedChannelInfo, &NodeId)> {
774 let (direction, target) = {
775 if source == &self.node_one {
776 (self.one_to_two.as_ref(), &self.node_two)
777 } else if source == &self.node_two {
778 (self.two_to_one.as_ref(), &self.node_one)
783 direction.map(|dir| (DirectedChannelInfo::new(self, dir), target))
786 /// Returns a [`ChannelUpdateInfo`] based on the direction implied by the channel_flag.
787 pub fn get_directional_info(&self, channel_flags: u8) -> Option<&ChannelUpdateInfo> {
788 let direction = channel_flags & 1u8;
790 self.one_to_two.as_ref()
792 self.two_to_one.as_ref()
797 impl fmt::Display for ChannelInfo {
798 fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
799 write!(f, "features: {}, node_one: {}, one_to_two: {:?}, node_two: {}, two_to_one: {:?}",
800 log_bytes!(self.features.encode()), log_bytes!(self.node_one.as_slice()), self.one_to_two, log_bytes!(self.node_two.as_slice()), self.two_to_one)?;
805 impl Writeable for ChannelInfo {
806 fn write<W: crate::util::ser::Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
807 write_tlv_fields!(writer, {
808 (0, self.features, required),
809 (1, self.announcement_received_time, (default_value, 0)),
810 (2, self.node_one, required),
811 (4, self.one_to_two, required),
812 (6, self.node_two, required),
813 (8, self.two_to_one, required),
814 (10, self.capacity_sats, required),
815 (12, self.announcement_message, required),
821 // A wrapper allowing for the optional deseralization of ChannelUpdateInfo. Utilizing this is
822 // necessary to maintain backwards compatibility with previous serializations of `ChannelUpdateInfo`
823 // that may have no `htlc_maximum_msat` field set. In case the field is absent, we simply ignore
824 // the error and continue reading the `ChannelInfo`. Hopefully, we'll then eventually receive newer
825 // channel updates via the gossip network.
826 struct ChannelUpdateInfoDeserWrapper(Option<ChannelUpdateInfo>);
828 impl MaybeReadable for ChannelUpdateInfoDeserWrapper {
829 fn read<R: io::Read>(reader: &mut R) -> Result<Option<Self>, DecodeError> {
830 match crate::util::ser::Readable::read(reader) {
831 Ok(channel_update_option) => Ok(Some(Self(channel_update_option))),
832 Err(DecodeError::ShortRead) => Ok(None),
833 Err(DecodeError::InvalidValue) => Ok(None),
834 Err(err) => Err(err),
839 impl Readable for ChannelInfo {
840 fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
841 _init_tlv_field_var!(features, required);
842 _init_tlv_field_var!(announcement_received_time, (default_value, 0));
843 _init_tlv_field_var!(node_one, required);
844 let mut one_to_two_wrap: Option<ChannelUpdateInfoDeserWrapper> = None;
845 _init_tlv_field_var!(node_two, required);
846 let mut two_to_one_wrap: Option<ChannelUpdateInfoDeserWrapper> = None;
847 _init_tlv_field_var!(capacity_sats, required);
848 _init_tlv_field_var!(announcement_message, required);
849 read_tlv_fields!(reader, {
850 (0, features, required),
851 (1, announcement_received_time, (default_value, 0)),
852 (2, node_one, required),
853 (4, one_to_two_wrap, ignorable),
854 (6, node_two, required),
855 (8, two_to_one_wrap, ignorable),
856 (10, capacity_sats, required),
857 (12, announcement_message, required),
861 features: _init_tlv_based_struct_field!(features, required),
862 node_one: _init_tlv_based_struct_field!(node_one, required),
863 one_to_two: one_to_two_wrap.map(|w| w.0).unwrap_or(None),
864 node_two: _init_tlv_based_struct_field!(node_two, required),
865 two_to_one: two_to_one_wrap.map(|w| w.0).unwrap_or(None),
866 capacity_sats: _init_tlv_based_struct_field!(capacity_sats, required),
867 announcement_message: _init_tlv_based_struct_field!(announcement_message, required),
868 announcement_received_time: _init_tlv_based_struct_field!(announcement_received_time, (default_value, 0)),
873 /// A wrapper around [`ChannelInfo`] representing information about the channel as directed from a
874 /// source node to a target node.
876 pub struct DirectedChannelInfo<'a> {
877 channel: &'a ChannelInfo,
878 direction: &'a ChannelUpdateInfo,
879 htlc_maximum_msat: u64,
880 effective_capacity: EffectiveCapacity,
883 impl<'a> DirectedChannelInfo<'a> {
885 fn new(channel: &'a ChannelInfo, direction: &'a ChannelUpdateInfo) -> Self {
886 let mut htlc_maximum_msat = direction.htlc_maximum_msat;
887 let capacity_msat = channel.capacity_sats.map(|capacity_sats| capacity_sats * 1000);
889 let effective_capacity = match capacity_msat {
890 Some(capacity_msat) => {
891 htlc_maximum_msat = cmp::min(htlc_maximum_msat, capacity_msat);
892 EffectiveCapacity::Total { capacity_msat, htlc_maximum_msat: htlc_maximum_msat }
894 None => EffectiveCapacity::MaximumHTLC { amount_msat: htlc_maximum_msat },
898 channel, direction, htlc_maximum_msat, effective_capacity
902 /// Returns information for the channel.
904 pub fn channel(&self) -> &'a ChannelInfo { self.channel }
906 /// Returns the maximum HTLC amount allowed over the channel in the direction.
908 pub fn htlc_maximum_msat(&self) -> u64 {
909 self.htlc_maximum_msat
912 /// Returns the [`EffectiveCapacity`] of the channel in the direction.
914 /// This is either the total capacity from the funding transaction, if known, or the
915 /// `htlc_maximum_msat` for the direction as advertised by the gossip network, if known,
917 pub fn effective_capacity(&self) -> EffectiveCapacity {
918 self.effective_capacity
921 /// Returns information for the direction.
923 pub(super) fn direction(&self) -> &'a ChannelUpdateInfo { self.direction }
926 impl<'a> fmt::Debug for DirectedChannelInfo<'a> {
927 fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
928 f.debug_struct("DirectedChannelInfo")
929 .field("channel", &self.channel)
934 /// The effective capacity of a channel for routing purposes.
936 /// While this may be smaller than the actual channel capacity, amounts greater than
937 /// [`Self::as_msat`] should not be routed through the channel.
938 #[derive(Clone, Copy, Debug)]
939 pub enum EffectiveCapacity {
940 /// The available liquidity in the channel known from being a channel counterparty, and thus a
943 /// Either the inbound or outbound liquidity depending on the direction, denominated in
947 /// The maximum HTLC amount in one direction as advertised on the gossip network.
949 /// The maximum HTLC amount denominated in millisatoshi.
952 /// The total capacity of the channel as determined by the funding transaction.
954 /// The funding amount denominated in millisatoshi.
956 /// The maximum HTLC amount denominated in millisatoshi.
957 htlc_maximum_msat: u64
959 /// A capacity sufficient to route any payment, typically used for private channels provided by
962 /// A capacity that is unknown possibly because either the chain state is unavailable to know
963 /// the total capacity or the `htlc_maximum_msat` was not advertised on the gossip network.
967 /// The presumed channel capacity denominated in millisatoshi for [`EffectiveCapacity::Unknown`] to
968 /// use when making routing decisions.
969 pub const UNKNOWN_CHANNEL_CAPACITY_MSAT: u64 = 250_000 * 1000;
971 impl EffectiveCapacity {
972 /// Returns the effective capacity denominated in millisatoshi.
973 pub fn as_msat(&self) -> u64 {
975 EffectiveCapacity::ExactLiquidity { liquidity_msat } => *liquidity_msat,
976 EffectiveCapacity::MaximumHTLC { amount_msat } => *amount_msat,
977 EffectiveCapacity::Total { capacity_msat, .. } => *capacity_msat,
978 EffectiveCapacity::Infinite => u64::max_value(),
979 EffectiveCapacity::Unknown => UNKNOWN_CHANNEL_CAPACITY_MSAT,
984 /// Fees for routing via a given channel or a node
985 #[derive(Eq, PartialEq, Copy, Clone, Debug, Hash)]
986 pub struct RoutingFees {
987 /// Flat routing fee in satoshis
989 /// Liquidity-based routing fee in millionths of a routed amount.
990 /// In other words, 10000 is 1%.
991 pub proportional_millionths: u32,
994 impl_writeable_tlv_based!(RoutingFees, {
995 (0, base_msat, required),
996 (2, proportional_millionths, required)
999 #[derive(Clone, Debug, PartialEq, Eq)]
1000 /// Information received in the latest node_announcement from this node.
1001 pub struct NodeAnnouncementInfo {
1002 /// Protocol features the node announced support for
1003 pub features: NodeFeatures,
1004 /// When the last known update to the node state was issued.
1005 /// Value is opaque, as set in the announcement.
1006 pub last_update: u32,
1007 /// Color assigned to the node
1009 /// Moniker assigned to the node.
1010 /// May be invalid or malicious (eg control chars),
1011 /// should not be exposed to the user.
1012 pub alias: NodeAlias,
1013 /// Internet-level addresses via which one can connect to the node
1014 pub addresses: Vec<NetAddress>,
1015 /// An initial announcement of the node
1016 /// Mostly redundant with the data we store in fields explicitly.
1017 /// Everything else is useful only for sending out for initial routing sync.
1018 /// Not stored if contains excess data to prevent DoS.
1019 pub announcement_message: Option<NodeAnnouncement>
1022 impl_writeable_tlv_based!(NodeAnnouncementInfo, {
1023 (0, features, required),
1024 (2, last_update, required),
1026 (6, alias, required),
1027 (8, announcement_message, option),
1028 (10, addresses, vec_type),
1031 /// A user-defined name for a node, which may be used when displaying the node in a graph.
1033 /// Since node aliases are provided by third parties, they are a potential avenue for injection
1034 /// attacks. Care must be taken when processing.
1035 #[derive(Clone, Debug, PartialEq, Eq)]
1036 pub struct NodeAlias(pub [u8; 32]);
1038 impl fmt::Display for NodeAlias {
1039 fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
1040 let first_null = self.0.iter().position(|b| *b == 0).unwrap_or(self.0.len());
1041 let bytes = self.0.split_at(first_null).0;
1042 match core::str::from_utf8(bytes) {
1043 Ok(alias) => PrintableString(alias).fmt(f)?,
1045 use core::fmt::Write;
1046 for c in bytes.iter().map(|b| *b as char) {
1047 // Display printable ASCII characters
1048 let control_symbol = core::char::REPLACEMENT_CHARACTER;
1049 let c = if c >= '\x20' && c <= '\x7e' { c } else { control_symbol };
1058 impl Writeable for NodeAlias {
1059 fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
1064 impl Readable for NodeAlias {
1065 fn read<R: io::Read>(r: &mut R) -> Result<Self, DecodeError> {
1066 Ok(NodeAlias(Readable::read(r)?))
1070 #[derive(Clone, Debug, PartialEq, Eq)]
1071 /// Details about a node in the network, known from the network announcement.
1072 pub struct NodeInfo {
1073 /// All valid channels a node has announced
1074 pub channels: Vec<u64>,
1075 /// More information about a node from node_announcement.
1076 /// Optional because we store a Node entry after learning about it from
1077 /// a channel announcement, but before receiving a node announcement.
1078 pub announcement_info: Option<NodeAnnouncementInfo>
1081 impl fmt::Display for NodeInfo {
1082 fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
1083 write!(f, " channels: {:?}, announcement_info: {:?}",
1084 &self.channels[..], self.announcement_info)?;
1089 impl Writeable for NodeInfo {
1090 fn write<W: crate::util::ser::Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
1091 write_tlv_fields!(writer, {
1092 // Note that older versions of LDK wrote the lowest inbound fees here at type 0
1093 (2, self.announcement_info, option),
1094 (4, self.channels, vec_type),
1100 // A wrapper allowing for the optional deseralization of `NodeAnnouncementInfo`. Utilizing this is
1101 // necessary to maintain compatibility with previous serializations of `NetAddress` that have an
1102 // invalid hostname set. We ignore and eat all errors until we are either able to read a
1103 // `NodeAnnouncementInfo` or hit a `ShortRead`, i.e., read the TLV field to the end.
1104 struct NodeAnnouncementInfoDeserWrapper(NodeAnnouncementInfo);
1106 impl MaybeReadable for NodeAnnouncementInfoDeserWrapper {
1107 fn read<R: io::Read>(reader: &mut R) -> Result<Option<Self>, DecodeError> {
1108 match crate::util::ser::Readable::read(reader) {
1109 Ok(node_announcement_info) => return Ok(Some(Self(node_announcement_info))),
1111 copy(reader, &mut sink()).unwrap();
1118 impl Readable for NodeInfo {
1119 fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
1120 // Historically, we tracked the lowest inbound fees for any node in order to use it as an
1121 // A* heuristic when routing. Sadly, these days many, many nodes have at least one channel
1122 // with zero inbound fees, causing that heuristic to provide little gain. Worse, because it
1123 // requires additional complexity and lookups during routing, it ends up being a
1124 // performance loss. Thus, we simply ignore the old field here and no longer track it.
1125 let mut _lowest_inbound_channel_fees: Option<RoutingFees> = None;
1126 let mut announcement_info_wrap: Option<NodeAnnouncementInfoDeserWrapper> = None;
1127 _init_tlv_field_var!(channels, vec_type);
1129 read_tlv_fields!(reader, {
1130 (0, _lowest_inbound_channel_fees, option),
1131 (2, announcement_info_wrap, ignorable),
1132 (4, channels, vec_type),
1136 announcement_info: announcement_info_wrap.map(|w| w.0),
1137 channels: _init_tlv_based_struct_field!(channels, vec_type),
1142 const SERIALIZATION_VERSION: u8 = 1;
1143 const MIN_SERIALIZATION_VERSION: u8 = 1;
1145 impl<L: Deref> Writeable for NetworkGraph<L> where L::Target: Logger {
1146 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
1147 write_ver_prefix!(writer, SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
1149 self.genesis_hash.write(writer)?;
1150 let channels = self.channels.read().unwrap();
1151 (channels.len() as u64).write(writer)?;
1152 for (ref chan_id, ref chan_info) in channels.unordered_iter() {
1153 (*chan_id).write(writer)?;
1154 chan_info.write(writer)?;
1156 let nodes = self.nodes.read().unwrap();
1157 (nodes.len() as u64).write(writer)?;
1158 for (ref node_id, ref node_info) in nodes.unordered_iter() {
1159 node_id.write(writer)?;
1160 node_info.write(writer)?;
1163 let last_rapid_gossip_sync_timestamp = self.get_last_rapid_gossip_sync_timestamp();
1164 write_tlv_fields!(writer, {
1165 (1, last_rapid_gossip_sync_timestamp, option),
1171 impl<L: Deref> ReadableArgs<L> for NetworkGraph<L> where L::Target: Logger {
1172 fn read<R: io::Read>(reader: &mut R, logger: L) -> Result<NetworkGraph<L>, DecodeError> {
1173 let _ver = read_ver_prefix!(reader, SERIALIZATION_VERSION);
1175 let genesis_hash: BlockHash = Readable::read(reader)?;
1176 let channels_count: u64 = Readable::read(reader)?;
1177 let mut channels = IndexedMap::new();
1178 for _ in 0..channels_count {
1179 let chan_id: u64 = Readable::read(reader)?;
1180 let chan_info = Readable::read(reader)?;
1181 channels.insert(chan_id, chan_info);
1183 let nodes_count: u64 = Readable::read(reader)?;
1184 let mut nodes = IndexedMap::new();
1185 for _ in 0..nodes_count {
1186 let node_id = Readable::read(reader)?;
1187 let node_info = Readable::read(reader)?;
1188 nodes.insert(node_id, node_info);
1191 let mut last_rapid_gossip_sync_timestamp: Option<u32> = None;
1192 read_tlv_fields!(reader, {
1193 (1, last_rapid_gossip_sync_timestamp, option),
1197 secp_ctx: Secp256k1::verification_only(),
1200 channels: RwLock::new(channels),
1201 nodes: RwLock::new(nodes),
1202 last_rapid_gossip_sync_timestamp: Mutex::new(last_rapid_gossip_sync_timestamp),
1203 removed_nodes: Mutex::new(HashMap::new()),
1204 removed_channels: Mutex::new(HashMap::new()),
1205 pending_checks: utxo::PendingChecks::new(),
1210 impl<L: Deref> fmt::Display for NetworkGraph<L> where L::Target: Logger {
1211 fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
1212 writeln!(f, "Network map\n[Channels]")?;
1213 for (key, val) in self.channels.read().unwrap().unordered_iter() {
1214 writeln!(f, " {}: {}", key, val)?;
1216 writeln!(f, "[Nodes]")?;
1217 for (&node_id, val) in self.nodes.read().unwrap().unordered_iter() {
1218 writeln!(f, " {}: {}", log_bytes!(node_id.as_slice()), val)?;
1224 impl<L: Deref> Eq for NetworkGraph<L> where L::Target: Logger {}
1225 impl<L: Deref> PartialEq for NetworkGraph<L> where L::Target: Logger {
1226 fn eq(&self, other: &Self) -> bool {
1227 self.genesis_hash == other.genesis_hash &&
1228 *self.channels.read().unwrap() == *other.channels.read().unwrap() &&
1229 *self.nodes.read().unwrap() == *other.nodes.read().unwrap()
1233 impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
1234 /// Creates a new, empty, network graph.
1235 pub fn new(genesis_hash: BlockHash, logger: L) -> NetworkGraph<L> {
1237 secp_ctx: Secp256k1::verification_only(),
1240 channels: RwLock::new(IndexedMap::new()),
1241 nodes: RwLock::new(IndexedMap::new()),
1242 last_rapid_gossip_sync_timestamp: Mutex::new(None),
1243 removed_channels: Mutex::new(HashMap::new()),
1244 removed_nodes: Mutex::new(HashMap::new()),
1245 pending_checks: utxo::PendingChecks::new(),
1249 /// Returns a read-only view of the network graph.
1250 pub fn read_only(&'_ self) -> ReadOnlyNetworkGraph<'_> {
1251 let channels = self.channels.read().unwrap();
1252 let nodes = self.nodes.read().unwrap();
1253 ReadOnlyNetworkGraph {
1259 /// The unix timestamp provided by the most recent rapid gossip sync.
1260 /// It will be set by the rapid sync process after every sync completion.
1261 pub fn get_last_rapid_gossip_sync_timestamp(&self) -> Option<u32> {
1262 self.last_rapid_gossip_sync_timestamp.lock().unwrap().clone()
1265 /// Update the unix timestamp provided by the most recent rapid gossip sync.
1266 /// This should be done automatically by the rapid sync process after every sync completion.
1267 pub fn set_last_rapid_gossip_sync_timestamp(&self, last_rapid_gossip_sync_timestamp: u32) {
1268 self.last_rapid_gossip_sync_timestamp.lock().unwrap().replace(last_rapid_gossip_sync_timestamp);
1271 /// Clears the `NodeAnnouncementInfo` field for all nodes in the `NetworkGraph` for testing
1274 pub fn clear_nodes_announcement_info(&self) {
1275 for node in self.nodes.write().unwrap().unordered_iter_mut() {
1276 node.1.announcement_info = None;
1280 /// For an already known node (from channel announcements), update its stored properties from a
1281 /// given node announcement.
1283 /// You probably don't want to call this directly, instead relying on a P2PGossipSync's
1284 /// RoutingMessageHandler implementation to call it indirectly. This may be useful to accept
1285 /// routing messages from a source using a protocol other than the lightning P2P protocol.
1286 pub fn update_node_from_announcement(&self, msg: &msgs::NodeAnnouncement) -> Result<(), LightningError> {
1287 let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.contents.encode()[..])[..]);
1288 secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.signature, &get_pubkey_from_node_id!(msg.contents.node_id, "node_announcement"), "node_announcement");
1289 self.update_node_from_announcement_intern(&msg.contents, Some(&msg))
1292 /// For an already known node (from channel announcements), update its stored properties from a
1293 /// given node announcement without verifying the associated signatures. Because we aren't
1294 /// given the associated signatures here we cannot relay the node announcement to any of our
1296 pub fn update_node_from_unsigned_announcement(&self, msg: &msgs::UnsignedNodeAnnouncement) -> Result<(), LightningError> {
1297 self.update_node_from_announcement_intern(msg, None)
1300 fn update_node_from_announcement_intern(&self, msg: &msgs::UnsignedNodeAnnouncement, full_msg: Option<&msgs::NodeAnnouncement>) -> Result<(), LightningError> {
1301 let mut nodes = self.nodes.write().unwrap();
1302 match nodes.get_mut(&msg.node_id) {
1304 core::mem::drop(nodes);
1305 self.pending_checks.check_hold_pending_node_announcement(msg, full_msg)?;
1306 Err(LightningError{err: "No existing channels for node_announcement".to_owned(), action: ErrorAction::IgnoreError})
1309 if let Some(node_info) = node.announcement_info.as_ref() {
1310 // The timestamp field is somewhat of a misnomer - the BOLTs use it to order
1311 // updates to ensure you always have the latest one, only vaguely suggesting
1312 // that it be at least the current time.
1313 if node_info.last_update > msg.timestamp {
1314 return Err(LightningError{err: "Update older than last processed update".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
1315 } else if node_info.last_update == msg.timestamp {
1316 return Err(LightningError{err: "Update had the same timestamp as last processed update".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
1321 msg.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY &&
1322 msg.excess_address_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY &&
1323 msg.excess_data.len() + msg.excess_address_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY;
1324 node.announcement_info = Some(NodeAnnouncementInfo {
1325 features: msg.features.clone(),
1326 last_update: msg.timestamp,
1328 alias: NodeAlias(msg.alias),
1329 addresses: msg.addresses.clone(),
1330 announcement_message: if should_relay { full_msg.cloned() } else { None },
1338 /// Store or update channel info from a channel announcement.
1340 /// You probably don't want to call this directly, instead relying on a P2PGossipSync's
1341 /// RoutingMessageHandler implementation to call it indirectly. This may be useful to accept
1342 /// routing messages from a source using a protocol other than the lightning P2P protocol.
1344 /// If a [`UtxoLookup`] object is provided via `utxo_lookup`, it will be called to verify
1345 /// the corresponding UTXO exists on chain and is correctly-formatted.
1346 pub fn update_channel_from_announcement<U: Deref>(
1347 &self, msg: &msgs::ChannelAnnouncement, utxo_lookup: &Option<U>,
1348 ) -> Result<(), LightningError>
1350 U::Target: UtxoLookup,
1352 let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.contents.encode()[..])[..]);
1353 secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.node_signature_1, &get_pubkey_from_node_id!(msg.contents.node_id_1, "channel_announcement"), "channel_announcement");
1354 secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.node_signature_2, &get_pubkey_from_node_id!(msg.contents.node_id_2, "channel_announcement"), "channel_announcement");
1355 secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.bitcoin_signature_1, &get_pubkey_from_node_id!(msg.contents.bitcoin_key_1, "channel_announcement"), "channel_announcement");
1356 secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.bitcoin_signature_2, &get_pubkey_from_node_id!(msg.contents.bitcoin_key_2, "channel_announcement"), "channel_announcement");
1357 self.update_channel_from_unsigned_announcement_intern(&msg.contents, Some(msg), utxo_lookup)
1360 /// Store or update channel info from a channel announcement without verifying the associated
1361 /// signatures. Because we aren't given the associated signatures here we cannot relay the
1362 /// channel announcement to any of our peers.
1364 /// If a [`UtxoLookup`] object is provided via `utxo_lookup`, it will be called to verify
1365 /// the corresponding UTXO exists on chain and is correctly-formatted.
1366 pub fn update_channel_from_unsigned_announcement<U: Deref>(
1367 &self, msg: &msgs::UnsignedChannelAnnouncement, utxo_lookup: &Option<U>
1368 ) -> Result<(), LightningError>
1370 U::Target: UtxoLookup,
1372 self.update_channel_from_unsigned_announcement_intern(msg, None, utxo_lookup)
1375 /// Update channel from partial announcement data received via rapid gossip sync
1377 /// `timestamp: u64`: Timestamp emulating the backdated original announcement receipt (by the
1378 /// rapid gossip sync server)
1380 /// All other parameters as used in [`msgs::UnsignedChannelAnnouncement`] fields.
1381 pub fn add_channel_from_partial_announcement(&self, short_channel_id: u64, timestamp: u64, features: ChannelFeatures, node_id_1: PublicKey, node_id_2: PublicKey) -> Result<(), LightningError> {
1382 if node_id_1 == node_id_2 {
1383 return Err(LightningError{err: "Channel announcement node had a channel with itself".to_owned(), action: ErrorAction::IgnoreError});
1386 let node_1 = NodeId::from_pubkey(&node_id_1);
1387 let node_2 = NodeId::from_pubkey(&node_id_2);
1388 let channel_info = ChannelInfo {
1390 node_one: node_1.clone(),
1392 node_two: node_2.clone(),
1394 capacity_sats: None,
1395 announcement_message: None,
1396 announcement_received_time: timestamp,
1399 self.add_channel_between_nodes(short_channel_id, channel_info, None)
1402 fn add_channel_between_nodes(&self, short_channel_id: u64, channel_info: ChannelInfo, utxo_value: Option<u64>) -> Result<(), LightningError> {
1403 let mut channels = self.channels.write().unwrap();
1404 let mut nodes = self.nodes.write().unwrap();
1406 let node_id_a = channel_info.node_one.clone();
1407 let node_id_b = channel_info.node_two.clone();
1409 match channels.entry(short_channel_id) {
1410 IndexedMapEntry::Occupied(mut entry) => {
1411 //TODO: because asking the blockchain if short_channel_id is valid is only optional
1412 //in the blockchain API, we need to handle it smartly here, though it's unclear
1414 if utxo_value.is_some() {
1415 // Either our UTXO provider is busted, there was a reorg, or the UTXO provider
1416 // only sometimes returns results. In any case remove the previous entry. Note
1417 // that the spec expects us to "blacklist" the node_ids involved, but we can't
1419 // a) we don't *require* a UTXO provider that always returns results.
1420 // b) we don't track UTXOs of channels we know about and remove them if they
1422 // c) it's unclear how to do so without exposing ourselves to massive DoS risk.
1423 Self::remove_channel_in_nodes(&mut nodes, &entry.get(), short_channel_id);
1424 *entry.get_mut() = channel_info;
1426 return Err(LightningError{err: "Already have knowledge of channel".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
1429 IndexedMapEntry::Vacant(entry) => {
1430 entry.insert(channel_info);
1434 for current_node_id in [node_id_a, node_id_b].iter() {
1435 match nodes.entry(current_node_id.clone()) {
1436 IndexedMapEntry::Occupied(node_entry) => {
1437 node_entry.into_mut().channels.push(short_channel_id);
1439 IndexedMapEntry::Vacant(node_entry) => {
1440 node_entry.insert(NodeInfo {
1441 channels: vec!(short_channel_id),
1442 announcement_info: None,
1451 fn update_channel_from_unsigned_announcement_intern<U: Deref>(
1452 &self, msg: &msgs::UnsignedChannelAnnouncement, full_msg: Option<&msgs::ChannelAnnouncement>, utxo_lookup: &Option<U>
1453 ) -> Result<(), LightningError>
1455 U::Target: UtxoLookup,
1457 if msg.node_id_1 == msg.node_id_2 || msg.bitcoin_key_1 == msg.bitcoin_key_2 {
1458 return Err(LightningError{err: "Channel announcement node had a channel with itself".to_owned(), action: ErrorAction::IgnoreError});
1462 let channels = self.channels.read().unwrap();
1464 if let Some(chan) = channels.get(&msg.short_channel_id) {
1465 if chan.capacity_sats.is_some() {
1466 // If we'd previously looked up the channel on-chain and checked the script
1467 // against what appears on-chain, ignore the duplicate announcement.
1469 // Because a reorg could replace one channel with another at the same SCID, if
1470 // the channel appears to be different, we re-validate. This doesn't expose us
1471 // to any more DoS risk than not, as a peer can always flood us with
1472 // randomly-generated SCID values anyway.
1474 // We use the Node IDs rather than the bitcoin_keys to check for "equivalence"
1475 // as we didn't (necessarily) store the bitcoin keys, and we only really care
1476 // if the peers on the channel changed anyway.
1477 if msg.node_id_1 == chan.node_one && msg.node_id_2 == chan.node_two {
1478 return Err(LightningError {
1479 err: "Already have chain-validated channel".to_owned(),
1480 action: ErrorAction::IgnoreDuplicateGossip
1483 } else if utxo_lookup.is_none() {
1484 // Similarly, if we can't check the chain right now anyway, ignore the
1485 // duplicate announcement without bothering to take the channels write lock.
1486 return Err(LightningError {
1487 err: "Already have non-chain-validated channel".to_owned(),
1488 action: ErrorAction::IgnoreDuplicateGossip
1495 let removed_channels = self.removed_channels.lock().unwrap();
1496 let removed_nodes = self.removed_nodes.lock().unwrap();
1497 if removed_channels.contains_key(&msg.short_channel_id) ||
1498 removed_nodes.contains_key(&msg.node_id_1) ||
1499 removed_nodes.contains_key(&msg.node_id_2) {
1500 return Err(LightningError{
1501 err: format!("Channel with SCID {} or one of its nodes was removed from our network graph recently", &msg.short_channel_id),
1502 action: ErrorAction::IgnoreAndLog(Level::Gossip)});
1506 let utxo_value = self.pending_checks.check_channel_announcement(
1507 utxo_lookup, msg, full_msg)?;
1509 #[allow(unused_mut, unused_assignments)]
1510 let mut announcement_received_time = 0;
1511 #[cfg(feature = "std")]
1513 announcement_received_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
1516 let chan_info = ChannelInfo {
1517 features: msg.features.clone(),
1518 node_one: msg.node_id_1,
1520 node_two: msg.node_id_2,
1522 capacity_sats: utxo_value,
1523 announcement_message: if msg.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY
1524 { full_msg.cloned() } else { None },
1525 announcement_received_time,
1528 self.add_channel_between_nodes(msg.short_channel_id, chan_info, utxo_value)
1531 /// Marks a channel in the graph as failed if a corresponding HTLC fail was sent.
1532 /// If permanent, removes a channel from the local storage.
1533 /// May cause the removal of nodes too, if this was their last channel.
1534 /// If not permanent, makes channels unavailable for routing.
1535 pub fn channel_failed(&self, short_channel_id: u64, is_permanent: bool) {
1536 #[cfg(feature = "std")]
1537 let current_time_unix = Some(SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs());
1538 #[cfg(not(feature = "std"))]
1539 let current_time_unix = None;
1541 self.channel_failed_with_time(short_channel_id, is_permanent, current_time_unix)
1544 /// Marks a channel in the graph as failed if a corresponding HTLC fail was sent.
1545 /// If permanent, removes a channel from the local storage.
1546 /// May cause the removal of nodes too, if this was their last channel.
1547 /// If not permanent, makes channels unavailable for routing.
1548 fn channel_failed_with_time(&self, short_channel_id: u64, is_permanent: bool, current_time_unix: Option<u64>) {
1549 let mut channels = self.channels.write().unwrap();
1551 if let Some(chan) = channels.remove(&short_channel_id) {
1552 let mut nodes = self.nodes.write().unwrap();
1553 self.removed_channels.lock().unwrap().insert(short_channel_id, current_time_unix);
1554 Self::remove_channel_in_nodes(&mut nodes, &chan, short_channel_id);
1557 if let Some(chan) = channels.get_mut(&short_channel_id) {
1558 if let Some(one_to_two) = chan.one_to_two.as_mut() {
1559 one_to_two.enabled = false;
1561 if let Some(two_to_one) = chan.two_to_one.as_mut() {
1562 two_to_one.enabled = false;
1568 /// Marks a node in the graph as permanently failed, effectively removing it and its channels
1569 /// from local storage.
1570 pub fn node_failed_permanent(&self, node_id: &PublicKey) {
1571 #[cfg(feature = "std")]
1572 let current_time_unix = Some(SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs());
1573 #[cfg(not(feature = "std"))]
1574 let current_time_unix = None;
1576 let node_id = NodeId::from_pubkey(node_id);
1577 let mut channels = self.channels.write().unwrap();
1578 let mut nodes = self.nodes.write().unwrap();
1579 let mut removed_channels = self.removed_channels.lock().unwrap();
1580 let mut removed_nodes = self.removed_nodes.lock().unwrap();
1582 if let Some(node) = nodes.remove(&node_id) {
1583 for scid in node.channels.iter() {
1584 if let Some(chan_info) = channels.remove(scid) {
1585 let other_node_id = if node_id == chan_info.node_one { chan_info.node_two } else { chan_info.node_one };
1586 if let IndexedMapEntry::Occupied(mut other_node_entry) = nodes.entry(other_node_id) {
1587 other_node_entry.get_mut().channels.retain(|chan_id| {
1590 if other_node_entry.get().channels.is_empty() {
1591 other_node_entry.remove_entry();
1594 removed_channels.insert(*scid, current_time_unix);
1597 removed_nodes.insert(node_id, current_time_unix);
1601 #[cfg(feature = "std")]
1602 /// Removes information about channels that we haven't heard any updates about in some time.
1603 /// This can be used regularly to prune the network graph of channels that likely no longer
1606 /// While there is no formal requirement that nodes regularly re-broadcast their channel
1607 /// updates every two weeks, the non-normative section of BOLT 7 currently suggests that
1608 /// pruning occur for updates which are at least two weeks old, which we implement here.
1610 /// Note that for users of the `lightning-background-processor` crate this method may be
1611 /// automatically called regularly for you.
1613 /// This method will also cause us to stop tracking removed nodes and channels if they have been
1614 /// in the map for a while so that these can be resynced from gossip in the future.
1616 /// This method is only available with the `std` feature. See
1617 /// [`NetworkGraph::remove_stale_channels_and_tracking_with_time`] for `no-std` use.
1618 pub fn remove_stale_channels_and_tracking(&self) {
1619 let time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
1620 self.remove_stale_channels_and_tracking_with_time(time);
1623 /// Removes information about channels that we haven't heard any updates about in some time.
1624 /// This can be used regularly to prune the network graph of channels that likely no longer
1627 /// While there is no formal requirement that nodes regularly re-broadcast their channel
1628 /// updates every two weeks, the non-normative section of BOLT 7 currently suggests that
1629 /// pruning occur for updates which are at least two weeks old, which we implement here.
1631 /// This method will also cause us to stop tracking removed nodes and channels if they have been
1632 /// in the map for a while so that these can be resynced from gossip in the future.
1634 /// This function takes the current unix time as an argument. For users with the `std` feature
1635 /// enabled, [`NetworkGraph::remove_stale_channels_and_tracking`] may be preferable.
1636 pub fn remove_stale_channels_and_tracking_with_time(&self, current_time_unix: u64) {
1637 let mut channels = self.channels.write().unwrap();
1638 // Time out if we haven't received an update in at least 14 days.
1639 if current_time_unix > u32::max_value() as u64 { return; } // Remove by 2106
1640 if current_time_unix < STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS { return; }
1641 let min_time_unix: u32 = (current_time_unix - STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS) as u32;
1642 // Sadly BTreeMap::retain was only stabilized in 1.53 so we can't switch to it for some
1644 let mut scids_to_remove = Vec::new();
1645 for (scid, info) in channels.unordered_iter_mut() {
1646 if info.one_to_two.is_some() && info.one_to_two.as_ref().unwrap().last_update < min_time_unix {
1647 info.one_to_two = None;
1649 if info.two_to_one.is_some() && info.two_to_one.as_ref().unwrap().last_update < min_time_unix {
1650 info.two_to_one = None;
1652 if info.one_to_two.is_none() || info.two_to_one.is_none() {
1653 // We check the announcement_received_time here to ensure we don't drop
1654 // announcements that we just received and are just waiting for our peer to send a
1655 // channel_update for.
1656 if info.announcement_received_time < min_time_unix as u64 {
1657 scids_to_remove.push(*scid);
1661 if !scids_to_remove.is_empty() {
1662 let mut nodes = self.nodes.write().unwrap();
1663 for scid in scids_to_remove {
1664 let info = channels.remove(&scid).expect("We just accessed this scid, it should be present");
1665 Self::remove_channel_in_nodes(&mut nodes, &info, scid);
1666 self.removed_channels.lock().unwrap().insert(scid, Some(current_time_unix));
1670 let should_keep_tracking = |time: &mut Option<u64>| {
1671 if let Some(time) = time {
1672 current_time_unix.saturating_sub(*time) < REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS
1674 // NOTE: In the case of no-std, we won't have access to the current UNIX time at the time of removal,
1675 // so we'll just set the removal time here to the current UNIX time on the very next invocation
1676 // of this function.
1677 #[cfg(feature = "no-std")]
1679 let mut tracked_time = Some(current_time_unix);
1680 core::mem::swap(time, &mut tracked_time);
1683 #[allow(unreachable_code)]
1687 self.removed_channels.lock().unwrap().retain(|_, time| should_keep_tracking(time));
1688 self.removed_nodes.lock().unwrap().retain(|_, time| should_keep_tracking(time));
1691 /// For an already known (from announcement) channel, update info about one of the directions
1694 /// You probably don't want to call this directly, instead relying on a P2PGossipSync's
1695 /// RoutingMessageHandler implementation to call it indirectly. This may be useful to accept
1696 /// routing messages from a source using a protocol other than the lightning P2P protocol.
1698 /// If built with `no-std`, any updates with a timestamp more than two weeks in the past or
1699 /// materially in the future will be rejected.
1700 pub fn update_channel(&self, msg: &msgs::ChannelUpdate) -> Result<(), LightningError> {
1701 self.update_channel_intern(&msg.contents, Some(&msg), Some(&msg.signature))
1704 /// For an already known (from announcement) channel, update info about one of the directions
1705 /// of the channel without verifying the associated signatures. Because we aren't given the
1706 /// associated signatures here we cannot relay the channel update to any of our peers.
1708 /// If built with `no-std`, any updates with a timestamp more than two weeks in the past or
1709 /// materially in the future will be rejected.
1710 pub fn update_channel_unsigned(&self, msg: &msgs::UnsignedChannelUpdate) -> Result<(), LightningError> {
1711 self.update_channel_intern(msg, None, None)
1714 fn update_channel_intern(&self, msg: &msgs::UnsignedChannelUpdate, full_msg: Option<&msgs::ChannelUpdate>, sig: Option<&secp256k1::ecdsa::Signature>) -> Result<(), LightningError> {
1715 let chan_enabled = msg.flags & (1 << 1) != (1 << 1);
1717 #[cfg(all(feature = "std", not(test), not(feature = "_test_utils")))]
1719 // Note that many tests rely on being able to set arbitrarily old timestamps, thus we
1720 // disable this check during tests!
1721 let time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
1722 if (msg.timestamp as u64) < time - STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS {
1723 return Err(LightningError{err: "channel_update is older than two weeks old".to_owned(), action: ErrorAction::IgnoreAndLog(Level::Gossip)});
1725 if msg.timestamp as u64 > time + 60 * 60 * 24 {
1726 return Err(LightningError{err: "channel_update has a timestamp more than a day in the future".to_owned(), action: ErrorAction::IgnoreAndLog(Level::Gossip)});
1730 let mut channels = self.channels.write().unwrap();
1731 match channels.get_mut(&msg.short_channel_id) {
1733 core::mem::drop(channels);
1734 self.pending_checks.check_hold_pending_channel_update(msg, full_msg)?;
1735 return Err(LightningError{err: "Couldn't find channel for update".to_owned(), action: ErrorAction::IgnoreError});
1738 if msg.htlc_maximum_msat > MAX_VALUE_MSAT {
1739 return Err(LightningError{err:
1740 "htlc_maximum_msat is larger than maximum possible msats".to_owned(),
1741 action: ErrorAction::IgnoreError});
1744 if let Some(capacity_sats) = channel.capacity_sats {
1745 // It's possible channel capacity is available now, although it wasn't available at announcement (so the field is None).
1746 // Don't query UTXO set here to reduce DoS risks.
1747 if capacity_sats > MAX_VALUE_MSAT / 1000 || msg.htlc_maximum_msat > capacity_sats * 1000 {
1748 return Err(LightningError{err:
1749 "htlc_maximum_msat is larger than channel capacity or capacity is bogus".to_owned(),
1750 action: ErrorAction::IgnoreError});
1753 macro_rules! check_update_latest {
1754 ($target: expr) => {
1755 if let Some(existing_chan_info) = $target.as_ref() {
1756 // The timestamp field is somewhat of a misnomer - the BOLTs use it to
1757 // order updates to ensure you always have the latest one, only
1758 // suggesting that it be at least the current time. For
1759 // channel_updates specifically, the BOLTs discuss the possibility of
1760 // pruning based on the timestamp field being more than two weeks old,
1761 // but only in the non-normative section.
1762 if existing_chan_info.last_update > msg.timestamp {
1763 return Err(LightningError{err: "Update older than last processed update".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
1764 } else if existing_chan_info.last_update == msg.timestamp {
1765 return Err(LightningError{err: "Update had same timestamp as last processed update".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
1771 macro_rules! get_new_channel_info {
1773 let last_update_message = if msg.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY
1774 { full_msg.cloned() } else { None };
1776 let updated_channel_update_info = ChannelUpdateInfo {
1777 enabled: chan_enabled,
1778 last_update: msg.timestamp,
1779 cltv_expiry_delta: msg.cltv_expiry_delta,
1780 htlc_minimum_msat: msg.htlc_minimum_msat,
1781 htlc_maximum_msat: msg.htlc_maximum_msat,
1783 base_msat: msg.fee_base_msat,
1784 proportional_millionths: msg.fee_proportional_millionths,
1788 Some(updated_channel_update_info)
1792 let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.encode()[..])[..]);
1793 if msg.flags & 1 == 1 {
1794 check_update_latest!(channel.two_to_one);
1795 if let Some(sig) = sig {
1796 secp_verify_sig!(self.secp_ctx, &msg_hash, &sig, &PublicKey::from_slice(channel.node_two.as_slice()).map_err(|_| LightningError{
1797 err: "Couldn't parse source node pubkey".to_owned(),
1798 action: ErrorAction::IgnoreAndLog(Level::Debug)
1799 })?, "channel_update");
1801 channel.two_to_one = get_new_channel_info!();
1803 check_update_latest!(channel.one_to_two);
1804 if let Some(sig) = sig {
1805 secp_verify_sig!(self.secp_ctx, &msg_hash, &sig, &PublicKey::from_slice(channel.node_one.as_slice()).map_err(|_| LightningError{
1806 err: "Couldn't parse destination node pubkey".to_owned(),
1807 action: ErrorAction::IgnoreAndLog(Level::Debug)
1808 })?, "channel_update");
1810 channel.one_to_two = get_new_channel_info!();
1818 fn remove_channel_in_nodes(nodes: &mut IndexedMap<NodeId, NodeInfo>, chan: &ChannelInfo, short_channel_id: u64) {
1819 macro_rules! remove_from_node {
1820 ($node_id: expr) => {
1821 if let IndexedMapEntry::Occupied(mut entry) = nodes.entry($node_id) {
1822 entry.get_mut().channels.retain(|chan_id| {
1823 short_channel_id != *chan_id
1825 if entry.get().channels.is_empty() {
1826 entry.remove_entry();
1829 panic!("Had channel that pointed to unknown node (ie inconsistent network map)!");
1834 remove_from_node!(chan.node_one);
1835 remove_from_node!(chan.node_two);
1839 impl ReadOnlyNetworkGraph<'_> {
1840 /// Returns all known valid channels' short ids along with announced channel info.
1842 /// (C-not exported) because we don't want to return lifetime'd references
1843 pub fn channels(&self) -> &IndexedMap<u64, ChannelInfo> {
1847 /// Returns information on a channel with the given id.
1848 pub fn channel(&self, short_channel_id: u64) -> Option<&ChannelInfo> {
1849 self.channels.get(&short_channel_id)
1852 #[cfg(c_bindings)] // Non-bindings users should use `channels`
1853 /// Returns the list of channels in the graph
1854 pub fn list_channels(&self) -> Vec<u64> {
1855 self.channels.unordered_keys().map(|c| *c).collect()
1858 /// Returns all known nodes' public keys along with announced node info.
1860 /// (C-not exported) because we don't want to return lifetime'd references
1861 pub fn nodes(&self) -> &IndexedMap<NodeId, NodeInfo> {
1865 /// Returns information on a node with the given id.
1866 pub fn node(&self, node_id: &NodeId) -> Option<&NodeInfo> {
1867 self.nodes.get(node_id)
1870 #[cfg(c_bindings)] // Non-bindings users should use `nodes`
1871 /// Returns the list of nodes in the graph
1872 pub fn list_nodes(&self) -> Vec<NodeId> {
1873 self.nodes.unordered_keys().map(|n| *n).collect()
1876 /// Get network addresses by node id.
1877 /// Returns None if the requested node is completely unknown,
1878 /// or if node announcement for the node was never received.
1879 pub fn get_addresses(&self, pubkey: &PublicKey) -> Option<Vec<NetAddress>> {
1880 if let Some(node) = self.nodes.get(&NodeId::from_pubkey(&pubkey)) {
1881 if let Some(node_info) = node.announcement_info.as_ref() {
1882 return Some(node_info.addresses.clone())
1891 use crate::ln::channelmanager;
1892 use crate::ln::chan_utils::make_funding_redeemscript;
1893 #[cfg(feature = "std")]
1894 use crate::ln::features::InitFeatures;
1895 use crate::routing::gossip::{P2PGossipSync, NetworkGraph, NetworkUpdate, NodeAlias, MAX_EXCESS_BYTES_FOR_RELAY, NodeId, RoutingFees, ChannelUpdateInfo, ChannelInfo, NodeAnnouncementInfo, NodeInfo};
1896 use crate::routing::utxo::UtxoLookupError;
1897 use crate::ln::msgs::{RoutingMessageHandler, UnsignedNodeAnnouncement, NodeAnnouncement,
1898 UnsignedChannelAnnouncement, ChannelAnnouncement, UnsignedChannelUpdate, ChannelUpdate,
1899 ReplyChannelRange, QueryChannelRange, QueryShortChannelIds, MAX_VALUE_MSAT};
1900 use crate::util::config::UserConfig;
1901 use crate::util::test_utils;
1902 use crate::util::ser::{ReadableArgs, Writeable};
1903 use crate::util::events::{MessageSendEvent, MessageSendEventsProvider};
1904 use crate::util::scid_utils::scid_from_parts;
1906 use crate::routing::gossip::REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS;
1907 use super::STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS;
1909 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
1910 use bitcoin::hashes::Hash;
1911 use bitcoin::network::constants::Network;
1912 use bitcoin::blockdata::constants::genesis_block;
1913 use bitcoin::blockdata::script::Script;
1914 use bitcoin::blockdata::transaction::TxOut;
1918 use bitcoin::secp256k1::{PublicKey, SecretKey};
1919 use bitcoin::secp256k1::{All, Secp256k1};
1922 use bitcoin::secp256k1;
1923 use crate::prelude::*;
1924 use crate::sync::Arc;
1926 fn create_network_graph() -> NetworkGraph<Arc<test_utils::TestLogger>> {
1927 let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
1928 let logger = Arc::new(test_utils::TestLogger::new());
1929 NetworkGraph::new(genesis_hash, logger)
1932 fn create_gossip_sync(network_graph: &NetworkGraph<Arc<test_utils::TestLogger>>) -> (
1933 Secp256k1<All>, P2PGossipSync<&NetworkGraph<Arc<test_utils::TestLogger>>,
1934 Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>
1936 let secp_ctx = Secp256k1::new();
1937 let logger = Arc::new(test_utils::TestLogger::new());
1938 let gossip_sync = P2PGossipSync::new(network_graph, None, Arc::clone(&logger));
1939 (secp_ctx, gossip_sync)
1943 #[cfg(feature = "std")]
1944 fn request_full_sync_finite_times() {
1945 let network_graph = create_network_graph();
1946 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
1947 let node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&hex::decode("0202020202020202020202020202020202020202020202020202020202020202").unwrap()[..]).unwrap());
1949 assert!(gossip_sync.should_request_full_sync(&node_id));
1950 assert!(gossip_sync.should_request_full_sync(&node_id));
1951 assert!(gossip_sync.should_request_full_sync(&node_id));
1952 assert!(gossip_sync.should_request_full_sync(&node_id));
1953 assert!(gossip_sync.should_request_full_sync(&node_id));
1954 assert!(!gossip_sync.should_request_full_sync(&node_id));
1957 fn get_signed_node_announcement<F: Fn(&mut UnsignedNodeAnnouncement)>(f: F, node_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> NodeAnnouncement {
1958 let node_id = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_key));
1959 let mut unsigned_announcement = UnsignedNodeAnnouncement {
1960 features: channelmanager::provided_node_features(&UserConfig::default()),
1965 addresses: Vec::new(),
1966 excess_address_data: Vec::new(),
1967 excess_data: Vec::new(),
1969 f(&mut unsigned_announcement);
1970 let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
1972 signature: secp_ctx.sign_ecdsa(&msghash, node_key),
1973 contents: unsigned_announcement
1977 fn get_signed_channel_announcement<F: Fn(&mut UnsignedChannelAnnouncement)>(f: F, node_1_key: &SecretKey, node_2_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> ChannelAnnouncement {
1978 let node_id_1 = PublicKey::from_secret_key(&secp_ctx, node_1_key);
1979 let node_id_2 = PublicKey::from_secret_key(&secp_ctx, node_2_key);
1980 let node_1_btckey = &SecretKey::from_slice(&[40; 32]).unwrap();
1981 let node_2_btckey = &SecretKey::from_slice(&[39; 32]).unwrap();
1983 let mut unsigned_announcement = UnsignedChannelAnnouncement {
1984 features: channelmanager::provided_channel_features(&UserConfig::default()),
1985 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
1986 short_channel_id: 0,
1987 node_id_1: NodeId::from_pubkey(&node_id_1),
1988 node_id_2: NodeId::from_pubkey(&node_id_2),
1989 bitcoin_key_1: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_1_btckey)),
1990 bitcoin_key_2: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_2_btckey)),
1991 excess_data: Vec::new(),
1993 f(&mut unsigned_announcement);
1994 let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
1995 ChannelAnnouncement {
1996 node_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_key),
1997 node_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_key),
1998 bitcoin_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_btckey),
1999 bitcoin_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_btckey),
2000 contents: unsigned_announcement,
2004 fn get_channel_script(secp_ctx: &Secp256k1<secp256k1::All>) -> Script {
2005 let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
2006 let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
2007 make_funding_redeemscript(&PublicKey::from_secret_key(secp_ctx, &node_1_btckey),
2008 &PublicKey::from_secret_key(secp_ctx, &node_2_btckey)).to_v0_p2wsh()
2011 fn get_signed_channel_update<F: Fn(&mut UnsignedChannelUpdate)>(f: F, node_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> ChannelUpdate {
2012 let mut unsigned_channel_update = UnsignedChannelUpdate {
2013 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
2014 short_channel_id: 0,
2017 cltv_expiry_delta: 144,
2018 htlc_minimum_msat: 1_000_000,
2019 htlc_maximum_msat: 1_000_000,
2020 fee_base_msat: 10_000,
2021 fee_proportional_millionths: 20,
2022 excess_data: Vec::new()
2024 f(&mut unsigned_channel_update);
2025 let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_channel_update.encode()[..])[..]);
2027 signature: secp_ctx.sign_ecdsa(&msghash, node_key),
2028 contents: unsigned_channel_update
2033 fn handling_node_announcements() {
2034 let network_graph = create_network_graph();
2035 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
2037 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2038 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2039 let zero_hash = Sha256dHash::hash(&[0; 32]);
2041 let valid_announcement = get_signed_node_announcement(|_| {}, node_1_privkey, &secp_ctx);
2042 match gossip_sync.handle_node_announcement(&valid_announcement) {
2044 Err(e) => assert_eq!("No existing channels for node_announcement", e.err)
2048 // Announce a channel to add a corresponding node.
2049 let valid_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2050 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2051 Ok(res) => assert!(res),
2056 match gossip_sync.handle_node_announcement(&valid_announcement) {
2057 Ok(res) => assert!(res),
2061 let fake_msghash = hash_to_message!(&zero_hash);
2062 match gossip_sync.handle_node_announcement(
2064 signature: secp_ctx.sign_ecdsa(&fake_msghash, node_1_privkey),
2065 contents: valid_announcement.contents.clone()
2068 Err(e) => assert_eq!(e.err, "Invalid signature on node_announcement message")
2071 let announcement_with_data = get_signed_node_announcement(|unsigned_announcement| {
2072 unsigned_announcement.timestamp += 1000;
2073 unsigned_announcement.excess_data.resize(MAX_EXCESS_BYTES_FOR_RELAY + 1, 0);
2074 }, node_1_privkey, &secp_ctx);
2075 // Return false because contains excess data.
2076 match gossip_sync.handle_node_announcement(&announcement_with_data) {
2077 Ok(res) => assert!(!res),
2081 // Even though previous announcement was not relayed further, we still accepted it,
2082 // so we now won't accept announcements before the previous one.
2083 let outdated_announcement = get_signed_node_announcement(|unsigned_announcement| {
2084 unsigned_announcement.timestamp += 1000 - 10;
2085 }, node_1_privkey, &secp_ctx);
2086 match gossip_sync.handle_node_announcement(&outdated_announcement) {
2088 Err(e) => assert_eq!(e.err, "Update older than last processed update")
2093 fn handling_channel_announcements() {
2094 let secp_ctx = Secp256k1::new();
2095 let logger = test_utils::TestLogger::new();
2097 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2098 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2100 let good_script = get_channel_script(&secp_ctx);
2101 let valid_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2103 // Test if the UTXO lookups were not supported
2104 let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
2105 let network_graph = NetworkGraph::new(genesis_hash, &logger);
2106 let mut gossip_sync = P2PGossipSync::new(&network_graph, None, &logger);
2107 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2108 Ok(res) => assert!(res),
2113 match network_graph.read_only().channels().get(&valid_announcement.contents.short_channel_id) {
2119 // If we receive announcement for the same channel (with UTXO lookups disabled),
2120 // drop new one on the floor, since we can't see any changes.
2121 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2123 Err(e) => assert_eq!(e.err, "Already have non-chain-validated channel")
2126 // Test if an associated transaction were not on-chain (or not confirmed).
2127 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
2128 *chain_source.utxo_ret.lock().unwrap() = Err(UtxoLookupError::UnknownTx);
2129 let network_graph = NetworkGraph::new(genesis_hash, &logger);
2130 gossip_sync = P2PGossipSync::new(&network_graph, Some(&chain_source), &logger);
2132 let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
2133 unsigned_announcement.short_channel_id += 1;
2134 }, node_1_privkey, node_2_privkey, &secp_ctx);
2135 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2137 Err(e) => assert_eq!(e.err, "Channel announced without corresponding UTXO entry")
2140 // Now test if the transaction is found in the UTXO set and the script is correct.
2141 *chain_source.utxo_ret.lock().unwrap() = Ok(TxOut { value: 0, script_pubkey: good_script.clone() });
2142 let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
2143 unsigned_announcement.short_channel_id += 2;
2144 }, node_1_privkey, node_2_privkey, &secp_ctx);
2145 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2146 Ok(res) => assert!(res),
2151 match network_graph.read_only().channels().get(&valid_announcement.contents.short_channel_id) {
2157 // If we receive announcement for the same channel, once we've validated it against the
2158 // chain, we simply ignore all new (duplicate) announcements.
2159 *chain_source.utxo_ret.lock().unwrap() = Ok(TxOut { value: 0, script_pubkey: good_script });
2160 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2162 Err(e) => assert_eq!(e.err, "Already have chain-validated channel")
2165 #[cfg(feature = "std")]
2167 use std::time::{SystemTime, UNIX_EPOCH};
2169 let tracking_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
2170 // Mark a node as permanently failed so it's tracked as removed.
2171 gossip_sync.network_graph().node_failed_permanent(&PublicKey::from_secret_key(&secp_ctx, node_1_privkey));
2173 // Return error and ignore valid channel announcement if one of the nodes has been tracked as removed.
2174 let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
2175 unsigned_announcement.short_channel_id += 3;
2176 }, node_1_privkey, node_2_privkey, &secp_ctx);
2177 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2179 Err(e) => assert_eq!(e.err, "Channel with SCID 3 or one of its nodes was removed from our network graph recently")
2182 gossip_sync.network_graph().remove_stale_channels_and_tracking_with_time(tracking_time + REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS);
2184 // The above channel announcement should be handled as per normal now.
2185 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2186 Ok(res) => assert!(res),
2191 // Don't relay valid channels with excess data
2192 let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
2193 unsigned_announcement.short_channel_id += 4;
2194 unsigned_announcement.excess_data.resize(MAX_EXCESS_BYTES_FOR_RELAY + 1, 0);
2195 }, node_1_privkey, node_2_privkey, &secp_ctx);
2196 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2197 Ok(res) => assert!(!res),
2201 let mut invalid_sig_announcement = valid_announcement.clone();
2202 invalid_sig_announcement.contents.excess_data = Vec::new();
2203 match gossip_sync.handle_channel_announcement(&invalid_sig_announcement) {
2205 Err(e) => assert_eq!(e.err, "Invalid signature on channel_announcement message")
2208 let channel_to_itself_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_1_privkey, &secp_ctx);
2209 match gossip_sync.handle_channel_announcement(&channel_to_itself_announcement) {
2211 Err(e) => assert_eq!(e.err, "Channel announcement node had a channel with itself")
2216 fn handling_channel_update() {
2217 let secp_ctx = Secp256k1::new();
2218 let logger = test_utils::TestLogger::new();
2219 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
2220 let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
2221 let network_graph = NetworkGraph::new(genesis_hash, &logger);
2222 let gossip_sync = P2PGossipSync::new(&network_graph, Some(&chain_source), &logger);
2224 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2225 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2227 let amount_sats = 1000_000;
2228 let short_channel_id;
2231 // Announce a channel we will update
2232 let good_script = get_channel_script(&secp_ctx);
2233 *chain_source.utxo_ret.lock().unwrap() = Ok(TxOut { value: amount_sats, script_pubkey: good_script.clone() });
2235 let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2236 short_channel_id = valid_channel_announcement.contents.short_channel_id;
2237 match gossip_sync.handle_channel_announcement(&valid_channel_announcement) {
2244 let valid_channel_update = get_signed_channel_update(|_| {}, node_1_privkey, &secp_ctx);
2245 match gossip_sync.handle_channel_update(&valid_channel_update) {
2246 Ok(res) => assert!(res),
2251 match network_graph.read_only().channels().get(&short_channel_id) {
2253 Some(channel_info) => {
2254 assert_eq!(channel_info.one_to_two.as_ref().unwrap().cltv_expiry_delta, 144);
2255 assert!(channel_info.two_to_one.is_none());
2260 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2261 unsigned_channel_update.timestamp += 100;
2262 unsigned_channel_update.excess_data.resize(MAX_EXCESS_BYTES_FOR_RELAY + 1, 0);
2263 }, node_1_privkey, &secp_ctx);
2264 // Return false because contains excess data
2265 match gossip_sync.handle_channel_update(&valid_channel_update) {
2266 Ok(res) => assert!(!res),
2270 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2271 unsigned_channel_update.timestamp += 110;
2272 unsigned_channel_update.short_channel_id += 1;
2273 }, node_1_privkey, &secp_ctx);
2274 match gossip_sync.handle_channel_update(&valid_channel_update) {
2276 Err(e) => assert_eq!(e.err, "Couldn't find channel for update")
2279 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2280 unsigned_channel_update.htlc_maximum_msat = MAX_VALUE_MSAT + 1;
2281 unsigned_channel_update.timestamp += 110;
2282 }, node_1_privkey, &secp_ctx);
2283 match gossip_sync.handle_channel_update(&valid_channel_update) {
2285 Err(e) => assert_eq!(e.err, "htlc_maximum_msat is larger than maximum possible msats")
2288 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2289 unsigned_channel_update.htlc_maximum_msat = amount_sats * 1000 + 1;
2290 unsigned_channel_update.timestamp += 110;
2291 }, node_1_privkey, &secp_ctx);
2292 match gossip_sync.handle_channel_update(&valid_channel_update) {
2294 Err(e) => assert_eq!(e.err, "htlc_maximum_msat is larger than channel capacity or capacity is bogus")
2297 // Even though previous update was not relayed further, we still accepted it,
2298 // so we now won't accept update before the previous one.
2299 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2300 unsigned_channel_update.timestamp += 100;
2301 }, node_1_privkey, &secp_ctx);
2302 match gossip_sync.handle_channel_update(&valid_channel_update) {
2304 Err(e) => assert_eq!(e.err, "Update had same timestamp as last processed update")
2307 let mut invalid_sig_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2308 unsigned_channel_update.timestamp += 500;
2309 }, node_1_privkey, &secp_ctx);
2310 let zero_hash = Sha256dHash::hash(&[0; 32]);
2311 let fake_msghash = hash_to_message!(&zero_hash);
2312 invalid_sig_channel_update.signature = secp_ctx.sign_ecdsa(&fake_msghash, node_1_privkey);
2313 match gossip_sync.handle_channel_update(&invalid_sig_channel_update) {
2315 Err(e) => assert_eq!(e.err, "Invalid signature on channel_update message")
2320 fn handling_network_update() {
2321 let logger = test_utils::TestLogger::new();
2322 let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
2323 let network_graph = NetworkGraph::new(genesis_hash, &logger);
2324 let secp_ctx = Secp256k1::new();
2326 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2327 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2328 let node_2_id = PublicKey::from_secret_key(&secp_ctx, node_2_privkey);
2331 // There is no nodes in the table at the beginning.
2332 assert_eq!(network_graph.read_only().nodes().len(), 0);
2335 let short_channel_id;
2337 // Announce a channel we will update
2338 let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2339 short_channel_id = valid_channel_announcement.contents.short_channel_id;
2340 let chain_source: Option<&test_utils::TestChainSource> = None;
2341 assert!(network_graph.update_channel_from_announcement(&valid_channel_announcement, &chain_source).is_ok());
2342 assert!(network_graph.read_only().channels().get(&short_channel_id).is_some());
2344 let valid_channel_update = get_signed_channel_update(|_| {}, node_1_privkey, &secp_ctx);
2345 assert!(network_graph.read_only().channels().get(&short_channel_id).unwrap().one_to_two.is_none());
2347 network_graph.handle_network_update(&NetworkUpdate::ChannelUpdateMessage {
2348 msg: valid_channel_update,
2351 assert!(network_graph.read_only().channels().get(&short_channel_id).unwrap().one_to_two.is_some());
2354 // Non-permanent closing just disables a channel
2356 match network_graph.read_only().channels().get(&short_channel_id) {
2358 Some(channel_info) => {
2359 assert!(channel_info.one_to_two.as_ref().unwrap().enabled);
2363 network_graph.handle_network_update(&NetworkUpdate::ChannelFailure {
2365 is_permanent: false,
2368 match network_graph.read_only().channels().get(&short_channel_id) {
2370 Some(channel_info) => {
2371 assert!(!channel_info.one_to_two.as_ref().unwrap().enabled);
2376 // Permanent closing deletes a channel
2377 network_graph.handle_network_update(&NetworkUpdate::ChannelFailure {
2382 assert_eq!(network_graph.read_only().channels().len(), 0);
2383 // Nodes are also deleted because there are no associated channels anymore
2384 assert_eq!(network_graph.read_only().nodes().len(), 0);
2387 // Get a new network graph since we don't want to track removed nodes in this test with "std"
2388 let network_graph = NetworkGraph::new(genesis_hash, &logger);
2390 // Announce a channel to test permanent node failure
2391 let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2392 let short_channel_id = valid_channel_announcement.contents.short_channel_id;
2393 let chain_source: Option<&test_utils::TestChainSource> = None;
2394 assert!(network_graph.update_channel_from_announcement(&valid_channel_announcement, &chain_source).is_ok());
2395 assert!(network_graph.read_only().channels().get(&short_channel_id).is_some());
2397 // Non-permanent node failure does not delete any nodes or channels
2398 network_graph.handle_network_update(&NetworkUpdate::NodeFailure {
2400 is_permanent: false,
2403 assert!(network_graph.read_only().channels().get(&short_channel_id).is_some());
2404 assert!(network_graph.read_only().nodes().get(&NodeId::from_pubkey(&node_2_id)).is_some());
2406 // Permanent node failure deletes node and its channels
2407 network_graph.handle_network_update(&NetworkUpdate::NodeFailure {
2412 assert_eq!(network_graph.read_only().nodes().len(), 0);
2413 // Channels are also deleted because the associated node has been deleted
2414 assert_eq!(network_graph.read_only().channels().len(), 0);
2419 fn test_channel_timeouts() {
2420 // Test the removal of channels with `remove_stale_channels_and_tracking`.
2421 let logger = test_utils::TestLogger::new();
2422 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
2423 let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
2424 let network_graph = NetworkGraph::new(genesis_hash, &logger);
2425 let gossip_sync = P2PGossipSync::new(&network_graph, Some(&chain_source), &logger);
2426 let secp_ctx = Secp256k1::new();
2428 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2429 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2431 let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2432 let short_channel_id = valid_channel_announcement.contents.short_channel_id;
2433 let chain_source: Option<&test_utils::TestChainSource> = None;
2434 assert!(network_graph.update_channel_from_announcement(&valid_channel_announcement, &chain_source).is_ok());
2435 assert!(network_graph.read_only().channels().get(&short_channel_id).is_some());
2437 // Submit two channel updates for each channel direction (update.flags bit).
2438 let valid_channel_update = get_signed_channel_update(|_| {}, node_1_privkey, &secp_ctx);
2439 assert!(gossip_sync.handle_channel_update(&valid_channel_update).is_ok());
2440 assert!(network_graph.read_only().channels().get(&short_channel_id).unwrap().one_to_two.is_some());
2442 let valid_channel_update_2 = get_signed_channel_update(|update| {update.flags |=1;}, node_2_privkey, &secp_ctx);
2443 gossip_sync.handle_channel_update(&valid_channel_update_2).unwrap();
2444 assert!(network_graph.read_only().channels().get(&short_channel_id).unwrap().two_to_one.is_some());
2446 network_graph.remove_stale_channels_and_tracking_with_time(100 + STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS);
2447 assert_eq!(network_graph.read_only().channels().len(), 1);
2448 assert_eq!(network_graph.read_only().nodes().len(), 2);
2450 network_graph.remove_stale_channels_and_tracking_with_time(101 + STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS);
2451 #[cfg(not(feature = "std"))] {
2452 // Make sure removed channels are tracked.
2453 assert_eq!(network_graph.removed_channels.lock().unwrap().len(), 1);
2455 network_graph.remove_stale_channels_and_tracking_with_time(101 + STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS +
2456 REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS);
2458 #[cfg(feature = "std")]
2460 // In std mode, a further check is performed before fully removing the channel -
2461 // the channel_announcement must have been received at least two weeks ago. We
2462 // fudge that here by indicating the time has jumped two weeks.
2463 assert_eq!(network_graph.read_only().channels().len(), 1);
2464 assert_eq!(network_graph.read_only().nodes().len(), 2);
2466 // Note that the directional channel information will have been removed already..
2467 // We want to check that this will work even if *one* of the channel updates is recent,
2468 // so we should add it with a recent timestamp.
2469 assert!(network_graph.read_only().channels().get(&short_channel_id).unwrap().one_to_two.is_none());
2470 use std::time::{SystemTime, UNIX_EPOCH};
2471 let announcement_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
2472 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2473 unsigned_channel_update.timestamp = (announcement_time + 1 + STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS) as u32;
2474 }, node_1_privkey, &secp_ctx);
2475 assert!(gossip_sync.handle_channel_update(&valid_channel_update).is_ok());
2476 assert!(network_graph.read_only().channels().get(&short_channel_id).unwrap().one_to_two.is_some());
2477 network_graph.remove_stale_channels_and_tracking_with_time(announcement_time + 1 + STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS);
2478 // Make sure removed channels are tracked.
2479 assert_eq!(network_graph.removed_channels.lock().unwrap().len(), 1);
2480 // Provide a later time so that sufficient time has passed
2481 network_graph.remove_stale_channels_and_tracking_with_time(announcement_time + 1 + STALE_CHANNEL_UPDATE_AGE_LIMIT_SECS +
2482 REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS);
2485 assert_eq!(network_graph.read_only().channels().len(), 0);
2486 assert_eq!(network_graph.read_only().nodes().len(), 0);
2487 assert!(network_graph.removed_channels.lock().unwrap().is_empty());
2489 #[cfg(feature = "std")]
2491 use std::time::{SystemTime, UNIX_EPOCH};
2493 let tracking_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
2495 // Clear tracked nodes and channels for clean slate
2496 network_graph.removed_channels.lock().unwrap().clear();
2497 network_graph.removed_nodes.lock().unwrap().clear();
2499 // Add a channel and nodes from channel announcement. So our network graph will
2500 // now only consist of two nodes and one channel between them.
2501 assert!(network_graph.update_channel_from_announcement(
2502 &valid_channel_announcement, &chain_source).is_ok());
2504 // Mark the channel as permanently failed. This will also remove the two nodes
2505 // and all of the entries will be tracked as removed.
2506 network_graph.channel_failed_with_time(short_channel_id, true, Some(tracking_time));
2508 // Should not remove from tracking if insufficient time has passed
2509 network_graph.remove_stale_channels_and_tracking_with_time(
2510 tracking_time + REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS - 1);
2511 assert_eq!(network_graph.removed_channels.lock().unwrap().len(), 1, "Removed channel count ≠1 with tracking_time {}", tracking_time);
2513 // Provide a later time so that sufficient time has passed
2514 network_graph.remove_stale_channels_and_tracking_with_time(
2515 tracking_time + REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS);
2516 assert!(network_graph.removed_channels.lock().unwrap().is_empty(), "Unexpectedly removed channels with tracking_time {}", tracking_time);
2517 assert!(network_graph.removed_nodes.lock().unwrap().is_empty(), "Unexpectedly removed nodes with tracking_time {}", tracking_time);
2520 #[cfg(not(feature = "std"))]
2522 // When we don't have access to the system clock, the time we started tracking removal will only
2523 // be that provided by the first call to `remove_stale_channels_and_tracking_with_time`. Hence,
2524 // only if sufficient time has passed after that first call, will the next call remove it from
2526 let removal_time = 1664619654;
2528 // Clear removed nodes and channels for clean slate
2529 network_graph.removed_channels.lock().unwrap().clear();
2530 network_graph.removed_nodes.lock().unwrap().clear();
2532 // Add a channel and nodes from channel announcement. So our network graph will
2533 // now only consist of two nodes and one channel between them.
2534 assert!(network_graph.update_channel_from_announcement(
2535 &valid_channel_announcement, &chain_source).is_ok());
2537 // Mark the channel as permanently failed. This will also remove the two nodes
2538 // and all of the entries will be tracked as removed.
2539 network_graph.channel_failed(short_channel_id, true);
2541 // The first time we call the following, the channel will have a removal time assigned.
2542 network_graph.remove_stale_channels_and_tracking_with_time(removal_time);
2543 assert_eq!(network_graph.removed_channels.lock().unwrap().len(), 1);
2545 // Provide a later time so that sufficient time has passed
2546 network_graph.remove_stale_channels_and_tracking_with_time(
2547 removal_time + REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS);
2548 assert!(network_graph.removed_channels.lock().unwrap().is_empty());
2549 assert!(network_graph.removed_nodes.lock().unwrap().is_empty());
2554 fn getting_next_channel_announcements() {
2555 let network_graph = create_network_graph();
2556 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
2557 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2558 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2560 // Channels were not announced yet.
2561 let channels_with_announcements = gossip_sync.get_next_channel_announcement(0);
2562 assert!(channels_with_announcements.is_none());
2564 let short_channel_id;
2566 // Announce a channel we will update
2567 let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2568 short_channel_id = valid_channel_announcement.contents.short_channel_id;
2569 match gossip_sync.handle_channel_announcement(&valid_channel_announcement) {
2575 // Contains initial channel announcement now.
2576 let channels_with_announcements = gossip_sync.get_next_channel_announcement(short_channel_id);
2577 if let Some(channel_announcements) = channels_with_announcements {
2578 let (_, ref update_1, ref update_2) = channel_announcements;
2579 assert_eq!(update_1, &None);
2580 assert_eq!(update_2, &None);
2586 // Valid channel update
2587 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2588 unsigned_channel_update.timestamp = 101;
2589 }, node_1_privkey, &secp_ctx);
2590 match gossip_sync.handle_channel_update(&valid_channel_update) {
2596 // Now contains an initial announcement and an update.
2597 let channels_with_announcements = gossip_sync.get_next_channel_announcement(short_channel_id);
2598 if let Some(channel_announcements) = channels_with_announcements {
2599 let (_, ref update_1, ref update_2) = channel_announcements;
2600 assert_ne!(update_1, &None);
2601 assert_eq!(update_2, &None);
2607 // Channel update with excess data.
2608 let valid_channel_update = get_signed_channel_update(|unsigned_channel_update| {
2609 unsigned_channel_update.timestamp = 102;
2610 unsigned_channel_update.excess_data = [1; MAX_EXCESS_BYTES_FOR_RELAY + 1].to_vec();
2611 }, node_1_privkey, &secp_ctx);
2612 match gossip_sync.handle_channel_update(&valid_channel_update) {
2618 // Test that announcements with excess data won't be returned
2619 let channels_with_announcements = gossip_sync.get_next_channel_announcement(short_channel_id);
2620 if let Some(channel_announcements) = channels_with_announcements {
2621 let (_, ref update_1, ref update_2) = channel_announcements;
2622 assert_eq!(update_1, &None);
2623 assert_eq!(update_2, &None);
2628 // Further starting point have no channels after it
2629 let channels_with_announcements = gossip_sync.get_next_channel_announcement(short_channel_id + 1000);
2630 assert!(channels_with_announcements.is_none());
2634 fn getting_next_node_announcements() {
2635 let network_graph = create_network_graph();
2636 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
2637 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2638 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2639 let node_id_1 = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_1_privkey));
2642 let next_announcements = gossip_sync.get_next_node_announcement(None);
2643 assert!(next_announcements.is_none());
2646 // Announce a channel to add 2 nodes
2647 let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2648 match gossip_sync.handle_channel_announcement(&valid_channel_announcement) {
2654 // Nodes were never announced
2655 let next_announcements = gossip_sync.get_next_node_announcement(None);
2656 assert!(next_announcements.is_none());
2659 let valid_announcement = get_signed_node_announcement(|_| {}, node_1_privkey, &secp_ctx);
2660 match gossip_sync.handle_node_announcement(&valid_announcement) {
2665 let valid_announcement = get_signed_node_announcement(|_| {}, node_2_privkey, &secp_ctx);
2666 match gossip_sync.handle_node_announcement(&valid_announcement) {
2672 let next_announcements = gossip_sync.get_next_node_announcement(None);
2673 assert!(next_announcements.is_some());
2675 // Skip the first node.
2676 let next_announcements = gossip_sync.get_next_node_announcement(Some(&node_id_1));
2677 assert!(next_announcements.is_some());
2680 // Later announcement which should not be relayed (excess data) prevent us from sharing a node
2681 let valid_announcement = get_signed_node_announcement(|unsigned_announcement| {
2682 unsigned_announcement.timestamp += 10;
2683 unsigned_announcement.excess_data = [1; MAX_EXCESS_BYTES_FOR_RELAY + 1].to_vec();
2684 }, node_2_privkey, &secp_ctx);
2685 match gossip_sync.handle_node_announcement(&valid_announcement) {
2686 Ok(res) => assert!(!res),
2691 let next_announcements = gossip_sync.get_next_node_announcement(Some(&node_id_1));
2692 assert!(next_announcements.is_none());
2696 fn network_graph_serialization() {
2697 let network_graph = create_network_graph();
2698 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
2700 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2701 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2703 // Announce a channel to add a corresponding node.
2704 let valid_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
2705 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2706 Ok(res) => assert!(res),
2710 let valid_announcement = get_signed_node_announcement(|_| {}, node_1_privkey, &secp_ctx);
2711 match gossip_sync.handle_node_announcement(&valid_announcement) {
2716 let mut w = test_utils::TestVecWriter(Vec::new());
2717 assert!(!network_graph.read_only().nodes().is_empty());
2718 assert!(!network_graph.read_only().channels().is_empty());
2719 network_graph.write(&mut w).unwrap();
2721 let logger = Arc::new(test_utils::TestLogger::new());
2722 assert!(<NetworkGraph<_>>::read(&mut io::Cursor::new(&w.0), logger).unwrap() == network_graph);
2726 fn network_graph_tlv_serialization() {
2727 let network_graph = create_network_graph();
2728 network_graph.set_last_rapid_gossip_sync_timestamp(42);
2730 let mut w = test_utils::TestVecWriter(Vec::new());
2731 network_graph.write(&mut w).unwrap();
2733 let logger = Arc::new(test_utils::TestLogger::new());
2734 let reassembled_network_graph: NetworkGraph<_> = ReadableArgs::read(&mut io::Cursor::new(&w.0), logger).unwrap();
2735 assert!(reassembled_network_graph == network_graph);
2736 assert_eq!(reassembled_network_graph.get_last_rapid_gossip_sync_timestamp().unwrap(), 42);
2740 #[cfg(feature = "std")]
2741 fn calling_sync_routing_table() {
2742 use std::time::{SystemTime, UNIX_EPOCH};
2743 use crate::ln::msgs::Init;
2745 let network_graph = create_network_graph();
2746 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
2747 let node_privkey_1 = &SecretKey::from_slice(&[42; 32]).unwrap();
2748 let node_id_1 = PublicKey::from_secret_key(&secp_ctx, node_privkey_1);
2750 let chain_hash = genesis_block(Network::Testnet).header.block_hash();
2752 // It should ignore if gossip_queries feature is not enabled
2754 let init_msg = Init { features: InitFeatures::empty(), remote_network_address: None };
2755 gossip_sync.peer_connected(&node_id_1, &init_msg).unwrap();
2756 let events = gossip_sync.get_and_clear_pending_msg_events();
2757 assert_eq!(events.len(), 0);
2760 // It should send a gossip_timestamp_filter with the correct information
2762 let mut features = InitFeatures::empty();
2763 features.set_gossip_queries_optional();
2764 let init_msg = Init { features, remote_network_address: None };
2765 gossip_sync.peer_connected(&node_id_1, &init_msg).unwrap();
2766 let events = gossip_sync.get_and_clear_pending_msg_events();
2767 assert_eq!(events.len(), 1);
2769 MessageSendEvent::SendGossipTimestampFilter{ node_id, msg } => {
2770 assert_eq!(node_id, &node_id_1);
2771 assert_eq!(msg.chain_hash, chain_hash);
2772 let expected_timestamp = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
2773 assert!((msg.first_timestamp as u64) >= expected_timestamp - 60*60*24*7*2);
2774 assert!((msg.first_timestamp as u64) < expected_timestamp - 60*60*24*7*2 + 10);
2775 assert_eq!(msg.timestamp_range, u32::max_value());
2777 _ => panic!("Expected MessageSendEvent::SendChannelRangeQuery")
2783 fn handling_query_channel_range() {
2784 let network_graph = create_network_graph();
2785 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
2787 let chain_hash = genesis_block(Network::Testnet).header.block_hash();
2788 let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
2789 let node_2_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
2790 let node_id_2 = PublicKey::from_secret_key(&secp_ctx, node_2_privkey);
2792 let mut scids: Vec<u64> = vec![
2793 scid_from_parts(0xfffffe, 0xffffff, 0xffff).unwrap(), // max
2794 scid_from_parts(0xffffff, 0xffffff, 0xffff).unwrap(), // never
2797 // used for testing multipart reply across blocks
2798 for block in 100000..=108001 {
2799 scids.push(scid_from_parts(block, 0, 0).unwrap());
2802 // used for testing resumption on same block
2803 scids.push(scid_from_parts(108001, 1, 0).unwrap());
2806 let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
2807 unsigned_announcement.short_channel_id = scid;
2808 }, node_1_privkey, node_2_privkey, &secp_ctx);
2809 match gossip_sync.handle_channel_announcement(&valid_announcement) {
2815 // Error when number_of_blocks=0
2816 do_handling_query_channel_range(
2820 chain_hash: chain_hash.clone(),
2822 number_of_blocks: 0,
2825 vec![ReplyChannelRange {
2826 chain_hash: chain_hash.clone(),
2828 number_of_blocks: 0,
2829 sync_complete: true,
2830 short_channel_ids: vec![]
2834 // Error when wrong chain
2835 do_handling_query_channel_range(
2839 chain_hash: genesis_block(Network::Bitcoin).header.block_hash(),
2841 number_of_blocks: 0xffff_ffff,
2844 vec![ReplyChannelRange {
2845 chain_hash: genesis_block(Network::Bitcoin).header.block_hash(),
2847 number_of_blocks: 0xffff_ffff,
2848 sync_complete: true,
2849 short_channel_ids: vec![],
2853 // Error when first_blocknum > 0xffffff
2854 do_handling_query_channel_range(
2858 chain_hash: chain_hash.clone(),
2859 first_blocknum: 0x01000000,
2860 number_of_blocks: 0xffff_ffff,
2863 vec![ReplyChannelRange {
2864 chain_hash: chain_hash.clone(),
2865 first_blocknum: 0x01000000,
2866 number_of_blocks: 0xffff_ffff,
2867 sync_complete: true,
2868 short_channel_ids: vec![]
2872 // Empty reply when max valid SCID block num
2873 do_handling_query_channel_range(
2877 chain_hash: chain_hash.clone(),
2878 first_blocknum: 0xffffff,
2879 number_of_blocks: 1,
2884 chain_hash: chain_hash.clone(),
2885 first_blocknum: 0xffffff,
2886 number_of_blocks: 1,
2887 sync_complete: true,
2888 short_channel_ids: vec![]
2893 // No results in valid query range
2894 do_handling_query_channel_range(
2898 chain_hash: chain_hash.clone(),
2899 first_blocknum: 1000,
2900 number_of_blocks: 1000,
2905 chain_hash: chain_hash.clone(),
2906 first_blocknum: 1000,
2907 number_of_blocks: 1000,
2908 sync_complete: true,
2909 short_channel_ids: vec![],
2914 // Overflow first_blocknum + number_of_blocks
2915 do_handling_query_channel_range(
2919 chain_hash: chain_hash.clone(),
2920 first_blocknum: 0xfe0000,
2921 number_of_blocks: 0xffffffff,
2926 chain_hash: chain_hash.clone(),
2927 first_blocknum: 0xfe0000,
2928 number_of_blocks: 0xffffffff - 0xfe0000,
2929 sync_complete: true,
2930 short_channel_ids: vec![
2931 0xfffffe_ffffff_ffff, // max
2937 // Single block exactly full
2938 do_handling_query_channel_range(
2942 chain_hash: chain_hash.clone(),
2943 first_blocknum: 100000,
2944 number_of_blocks: 8000,
2949 chain_hash: chain_hash.clone(),
2950 first_blocknum: 100000,
2951 number_of_blocks: 8000,
2952 sync_complete: true,
2953 short_channel_ids: (100000..=107999)
2954 .map(|block| scid_from_parts(block, 0, 0).unwrap())
2960 // Multiple split on new block
2961 do_handling_query_channel_range(
2965 chain_hash: chain_hash.clone(),
2966 first_blocknum: 100000,
2967 number_of_blocks: 8001,
2972 chain_hash: chain_hash.clone(),
2973 first_blocknum: 100000,
2974 number_of_blocks: 7999,
2975 sync_complete: false,
2976 short_channel_ids: (100000..=107999)
2977 .map(|block| scid_from_parts(block, 0, 0).unwrap())
2981 chain_hash: chain_hash.clone(),
2982 first_blocknum: 107999,
2983 number_of_blocks: 2,
2984 sync_complete: true,
2985 short_channel_ids: vec![
2986 scid_from_parts(108000, 0, 0).unwrap(),
2992 // Multiple split on same block
2993 do_handling_query_channel_range(
2997 chain_hash: chain_hash.clone(),
2998 first_blocknum: 100002,
2999 number_of_blocks: 8000,
3004 chain_hash: chain_hash.clone(),
3005 first_blocknum: 100002,
3006 number_of_blocks: 7999,
3007 sync_complete: false,
3008 short_channel_ids: (100002..=108001)
3009 .map(|block| scid_from_parts(block, 0, 0).unwrap())
3013 chain_hash: chain_hash.clone(),
3014 first_blocknum: 108001,
3015 number_of_blocks: 1,
3016 sync_complete: true,
3017 short_channel_ids: vec![
3018 scid_from_parts(108001, 1, 0).unwrap(),
3025 fn do_handling_query_channel_range(
3026 gossip_sync: &P2PGossipSync<&NetworkGraph<Arc<test_utils::TestLogger>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
3027 test_node_id: &PublicKey,
3028 msg: QueryChannelRange,
3030 expected_replies: Vec<ReplyChannelRange>
3032 let mut max_firstblocknum = msg.first_blocknum.saturating_sub(1);
3033 let mut c_lightning_0_9_prev_end_blocknum = max_firstblocknum;
3034 let query_end_blocknum = msg.end_blocknum();
3035 let result = gossip_sync.handle_query_channel_range(test_node_id, msg);
3038 assert!(result.is_ok());
3040 assert!(result.is_err());
3043 let events = gossip_sync.get_and_clear_pending_msg_events();
3044 assert_eq!(events.len(), expected_replies.len());
3046 for i in 0..events.len() {
3047 let expected_reply = &expected_replies[i];
3049 MessageSendEvent::SendReplyChannelRange { node_id, msg } => {
3050 assert_eq!(node_id, test_node_id);
3051 assert_eq!(msg.chain_hash, expected_reply.chain_hash);
3052 assert_eq!(msg.first_blocknum, expected_reply.first_blocknum);
3053 assert_eq!(msg.number_of_blocks, expected_reply.number_of_blocks);
3054 assert_eq!(msg.sync_complete, expected_reply.sync_complete);
3055 assert_eq!(msg.short_channel_ids, expected_reply.short_channel_ids);
3057 // Enforce exactly the sequencing requirements present on c-lightning v0.9.3
3058 assert!(msg.first_blocknum == c_lightning_0_9_prev_end_blocknum || msg.first_blocknum == c_lightning_0_9_prev_end_blocknum.saturating_add(1));
3059 assert!(msg.first_blocknum >= max_firstblocknum);
3060 max_firstblocknum = msg.first_blocknum;
3061 c_lightning_0_9_prev_end_blocknum = msg.first_blocknum.saturating_add(msg.number_of_blocks);
3063 // Check that the last block count is >= the query's end_blocknum
3064 if i == events.len() - 1 {
3065 assert!(msg.first_blocknum.saturating_add(msg.number_of_blocks) >= query_end_blocknum);
3068 _ => panic!("expected MessageSendEvent::SendReplyChannelRange"),
3074 fn handling_query_short_channel_ids() {
3075 let network_graph = create_network_graph();
3076 let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
3077 let node_privkey = &SecretKey::from_slice(&[41; 32]).unwrap();
3078 let node_id = PublicKey::from_secret_key(&secp_ctx, node_privkey);
3080 let chain_hash = genesis_block(Network::Testnet).header.block_hash();
3082 let result = gossip_sync.handle_query_short_channel_ids(&node_id, QueryShortChannelIds {
3084 short_channel_ids: vec![0x0003e8_000000_0000],
3086 assert!(result.is_err());
3090 fn displays_node_alias() {
3091 let format_str_alias = |alias: &str| {
3092 let mut bytes = [0u8; 32];
3093 bytes[..alias.as_bytes().len()].copy_from_slice(alias.as_bytes());
3094 format!("{}", NodeAlias(bytes))
3097 assert_eq!(format_str_alias("I\u{1F496}LDK! \u{26A1}"), "I\u{1F496}LDK! \u{26A1}");
3098 assert_eq!(format_str_alias("I\u{1F496}LDK!\0\u{26A1}"), "I\u{1F496}LDK!");
3099 assert_eq!(format_str_alias("I\u{1F496}LDK!\t\u{26A1}"), "I\u{1F496}LDK!\u{FFFD}\u{26A1}");
3101 let format_bytes_alias = |alias: &[u8]| {
3102 let mut bytes = [0u8; 32];
3103 bytes[..alias.len()].copy_from_slice(alias);
3104 format!("{}", NodeAlias(bytes))
3107 assert_eq!(format_bytes_alias(b"\xFFI <heart> LDK!"), "\u{FFFD}I <heart> LDK!");
3108 assert_eq!(format_bytes_alias(b"\xFFI <heart>\0LDK!"), "\u{FFFD}I <heart>");
3109 assert_eq!(format_bytes_alias(b"\xFFI <heart>\tLDK!"), "\u{FFFD}I <heart>\u{FFFD}LDK!");
3113 fn channel_info_is_readable() {
3114 let chanmon_cfgs = crate::ln::functional_test_utils::create_chanmon_cfgs(2);
3115 let node_cfgs = crate::ln::functional_test_utils::create_node_cfgs(2, &chanmon_cfgs);
3116 let node_chanmgrs = crate::ln::functional_test_utils::create_node_chanmgrs(2, &node_cfgs, &[None, None, None, None]);
3117 let nodes = crate::ln::functional_test_utils::create_network(2, &node_cfgs, &node_chanmgrs);
3118 let config = crate::ln::functional_test_utils::test_default_channel_config();
3120 // 1. Test encoding/decoding of ChannelUpdateInfo
3121 let chan_update_info = ChannelUpdateInfo {
3124 cltv_expiry_delta: 42,
3125 htlc_minimum_msat: 1234,
3126 htlc_maximum_msat: 5678,
3127 fees: RoutingFees { base_msat: 9, proportional_millionths: 10 },
3128 last_update_message: None,
3131 let mut encoded_chan_update_info: Vec<u8> = Vec::new();
3132 assert!(chan_update_info.write(&mut encoded_chan_update_info).is_ok());
3134 // First make sure we can read ChannelUpdateInfos we just wrote
3135 let read_chan_update_info: ChannelUpdateInfo = crate::util::ser::Readable::read(&mut encoded_chan_update_info.as_slice()).unwrap();
3136 assert_eq!(chan_update_info, read_chan_update_info);
3138 // Check the serialization hasn't changed.
3139 let legacy_chan_update_info_with_some: Vec<u8> = hex::decode("340004000000170201010402002a060800000000000004d2080909000000000000162e0a0d0c00040000000902040000000a0c0100").unwrap();
3140 assert_eq!(encoded_chan_update_info, legacy_chan_update_info_with_some);
3142 // Check we fail if htlc_maximum_msat is not present in either the ChannelUpdateInfo itself
3143 // or the ChannelUpdate enclosed with `last_update_message`.
3144 let legacy_chan_update_info_with_some_and_fail_update: Vec<u8> = hex::decode("b40004000000170201010402002a060800000000000004d2080909000000000000162e0a0d0c00040000000902040000000a0c8181d977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f00083a840000034d013413a70000009000000000000f42400000271000000014").unwrap();
3145 let read_chan_update_info_res: Result<ChannelUpdateInfo, crate::ln::msgs::DecodeError> = crate::util::ser::Readable::read(&mut legacy_chan_update_info_with_some_and_fail_update.as_slice());
3146 assert!(read_chan_update_info_res.is_err());
3148 let legacy_chan_update_info_with_none: Vec<u8> = hex::decode("2c0004000000170201010402002a060800000000000004d20801000a0d0c00040000000902040000000a0c0100").unwrap();
3149 let read_chan_update_info_res: Result<ChannelUpdateInfo, crate::ln::msgs::DecodeError> = crate::util::ser::Readable::read(&mut legacy_chan_update_info_with_none.as_slice());
3150 assert!(read_chan_update_info_res.is_err());
3152 // 2. Test encoding/decoding of ChannelInfo
3153 // Check we can encode/decode ChannelInfo without ChannelUpdateInfo fields present.
3154 let chan_info_none_updates = ChannelInfo {
3155 features: channelmanager::provided_channel_features(&config),
3156 node_one: NodeId::from_pubkey(&nodes[0].node.get_our_node_id()),
3158 node_two: NodeId::from_pubkey(&nodes[1].node.get_our_node_id()),
3160 capacity_sats: None,
3161 announcement_message: None,
3162 announcement_received_time: 87654,
3165 let mut encoded_chan_info: Vec<u8> = Vec::new();
3166 assert!(chan_info_none_updates.write(&mut encoded_chan_info).is_ok());
3168 let read_chan_info: ChannelInfo = crate::util::ser::Readable::read(&mut encoded_chan_info.as_slice()).unwrap();
3169 assert_eq!(chan_info_none_updates, read_chan_info);
3171 // Check we can encode/decode ChannelInfo with ChannelUpdateInfo fields present.
3172 let chan_info_some_updates = ChannelInfo {
3173 features: channelmanager::provided_channel_features(&config),
3174 node_one: NodeId::from_pubkey(&nodes[0].node.get_our_node_id()),
3175 one_to_two: Some(chan_update_info.clone()),
3176 node_two: NodeId::from_pubkey(&nodes[1].node.get_our_node_id()),
3177 two_to_one: Some(chan_update_info.clone()),
3178 capacity_sats: None,
3179 announcement_message: None,
3180 announcement_received_time: 87654,
3183 let mut encoded_chan_info: Vec<u8> = Vec::new();
3184 assert!(chan_info_some_updates.write(&mut encoded_chan_info).is_ok());
3186 let read_chan_info: ChannelInfo = crate::util::ser::Readable::read(&mut encoded_chan_info.as_slice()).unwrap();
3187 assert_eq!(chan_info_some_updates, read_chan_info);
3189 // Check the serialization hasn't changed.
3190 let legacy_chan_info_with_some: Vec<u8> = hex::decode("ca00020000010800000000000156660221027f921585f2ac0c7c70e36110adecfd8fd14b8a99bfb3d000a283fcac358fce88043636340004000000170201010402002a060800000000000004d2080909000000000000162e0a0d0c00040000000902040000000a0c010006210355f8d2238a322d16b602bd0ceaad5b01019fb055971eaadcc9b29226a4da6c23083636340004000000170201010402002a060800000000000004d2080909000000000000162e0a0d0c00040000000902040000000a0c01000a01000c0100").unwrap();
3191 assert_eq!(encoded_chan_info, legacy_chan_info_with_some);
3193 // Check we can decode legacy ChannelInfo, even if the `two_to_one` / `one_to_two` /
3194 // `last_update_message` fields fail to decode due to missing htlc_maximum_msat.
3195 let legacy_chan_info_with_some_and_fail_update = hex::decode("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").unwrap();
3196 let read_chan_info: ChannelInfo = crate::util::ser::Readable::read(&mut legacy_chan_info_with_some_and_fail_update.as_slice()).unwrap();
3197 assert_eq!(read_chan_info.announcement_received_time, 87654);
3198 assert_eq!(read_chan_info.one_to_two, None);
3199 assert_eq!(read_chan_info.two_to_one, None);
3201 let legacy_chan_info_with_none: Vec<u8> = hex::decode("ba00020000010800000000000156660221027f921585f2ac0c7c70e36110adecfd8fd14b8a99bfb3d000a283fcac358fce88042e2e2c0004000000170201010402002a060800000000000004d20801000a0d0c00040000000902040000000a0c010006210355f8d2238a322d16b602bd0ceaad5b01019fb055971eaadcc9b29226a4da6c23082e2e2c0004000000170201010402002a060800000000000004d20801000a0d0c00040000000902040000000a0c01000a01000c0100").unwrap();
3202 let read_chan_info: ChannelInfo = crate::util::ser::Readable::read(&mut legacy_chan_info_with_none.as_slice()).unwrap();
3203 assert_eq!(read_chan_info.announcement_received_time, 87654);
3204 assert_eq!(read_chan_info.one_to_two, None);
3205 assert_eq!(read_chan_info.two_to_one, None);
3209 fn node_info_is_readable() {
3210 use std::convert::TryFrom;
3212 // 1. Check we can read a valid NodeAnnouncementInfo and fail on an invalid one
3213 let valid_netaddr = crate::ln::msgs::NetAddress::Hostname { hostname: crate::util::ser::Hostname::try_from("A".to_string()).unwrap(), port: 1234 };
3214 let valid_node_ann_info = NodeAnnouncementInfo {
3215 features: channelmanager::provided_node_features(&UserConfig::default()),
3218 alias: NodeAlias([0u8; 32]),
3219 addresses: vec![valid_netaddr],
3220 announcement_message: None,
3223 let mut encoded_valid_node_ann_info = Vec::new();
3224 assert!(valid_node_ann_info.write(&mut encoded_valid_node_ann_info).is_ok());
3225 let read_valid_node_ann_info: NodeAnnouncementInfo = crate::util::ser::Readable::read(&mut encoded_valid_node_ann_info.as_slice()).unwrap();
3226 assert_eq!(read_valid_node_ann_info, valid_node_ann_info);
3228 let encoded_invalid_node_ann_info = hex::decode("3f0009000788a000080a51a20204000000000403000000062000000000000000000000000000000000000000000000000000000000000000000a0505014004d2").unwrap();
3229 let read_invalid_node_ann_info_res: Result<NodeAnnouncementInfo, crate::ln::msgs::DecodeError> = crate::util::ser::Readable::read(&mut encoded_invalid_node_ann_info.as_slice());
3230 assert!(read_invalid_node_ann_info_res.is_err());
3232 // 2. Check we can read a NodeInfo anyways, but set the NodeAnnouncementInfo to None if invalid
3233 let valid_node_info = NodeInfo {
3234 channels: Vec::new(),
3235 announcement_info: Some(valid_node_ann_info),
3238 let mut encoded_valid_node_info = Vec::new();
3239 assert!(valid_node_info.write(&mut encoded_valid_node_info).is_ok());
3240 let read_valid_node_info: NodeInfo = crate::util::ser::Readable::read(&mut encoded_valid_node_info.as_slice()).unwrap();
3241 assert_eq!(read_valid_node_info, valid_node_info);
3243 let encoded_invalid_node_info_hex = hex::decode("4402403f0009000788a000080a51a20204000000000403000000062000000000000000000000000000000000000000000000000000000000000000000a0505014004d20400").unwrap();
3244 let read_invalid_node_info: NodeInfo = crate::util::ser::Readable::read(&mut encoded_invalid_node_info_hex.as_slice()).unwrap();
3245 assert_eq!(read_invalid_node_info.announcement_info, None);
3249 #[cfg(all(test, feature = "_bench_unstable"))]
3257 fn read_network_graph(bench: &mut Bencher) {
3258 let logger = crate::util::test_utils::TestLogger::new();
3259 let mut d = crate::routing::router::bench_utils::get_route_file().unwrap();
3260 let mut v = Vec::new();
3261 d.read_to_end(&mut v).unwrap();
3263 let _ = NetworkGraph::read(&mut std::io::Cursor::new(&v), &logger).unwrap();
3268 fn write_network_graph(bench: &mut Bencher) {
3269 let logger = crate::util::test_utils::TestLogger::new();
3270 let mut d = crate::routing::router::bench_utils::get_route_file().unwrap();
3271 let net_graph = NetworkGraph::read(&mut d, &logger).unwrap();
3273 let _ = net_graph.encode();