rust-lightning
23 months agoCorrect bogus references to `revocation_point` in `ChannelMonitor` 2022-05-mon-cleanups-renames
Matt Corallo [Tue, 24 May 2022 22:02:15 +0000 (22:02 +0000)]
Correct bogus references to `revocation_point` in `ChannelMonitor`

The `ChannelMonitor` had a field for the counterparty's
`cur_revocation_points`. Somewhat confusingly, this actually stored
the counterparty's *per-commitment* points, not the (derived)
revocation points.

Here we correct this by simply renaming the references as
appropriate. Note the update in `channel.rs` makes the variable
names align correctly.

23 months agoRename HTLC `onchain_value_satoshis` to `htlc_value_satoshis`
Matt Corallo [Thu, 19 May 2022 00:56:16 +0000 (00:56 +0000)]
Rename HTLC `onchain_value_satoshis` to `htlc_value_satoshis`

In `HTLCUpdate` and `OnchainEvent` tracking, we store the HTLC
value (rounded down to whole satoshis). This is somewhat
confusingly referred to as the `onchain_value_satoshis` even though
it refers to the commitment transaction output value, not the value
available on chain (which may have been reduced by an
HTLC-Timeout/HTLC-Success transaction).

23 months agoDRY SpendableOutput tests in `monitor_tests.rs`
Matt Corallo [Fri, 20 May 2022 01:42:06 +0000 (01:42 +0000)]
DRY SpendableOutput tests in `monitor_tests.rs`

23 months agoRename HTLC `input_idx` fields to `commitment_tx_output_idx`
Matt Corallo [Sun, 24 Apr 2022 20:30:50 +0000 (20:30 +0000)]
Rename HTLC `input_idx` fields to `commitment_tx_output_idx`

Several fields used in tracking on-chain HTLC outputs were
named `input_idx` despite referring to the output index in the
commitment transaction. Here they are all renamed
`commitment_tx_output_idx` for clarity.

23 months agoMerge pull request #1490 from arik-so/rust_beta_doc_fix
Jeffrey Czyz [Mon, 23 May 2022 05:16:04 +0000 (00:16 -0500)]
Merge pull request #1490 from arik-so/rust_beta_doc_fix

Fix rust beta docs for lightning-invoice crate.

23 months agoMerge pull request #1492 from tnull/2022-05-fix-bolts-url
Arik Sosman [Fri, 20 May 2022 18:20:55 +0000 (11:20 -0700)]
Merge pull request #1492 from tnull/2022-05-fix-bolts-url

Docs: Update to 'new' spec repository URL.

23 months agoMerge pull request #1456 from jkczyz/2022-04-effective-capacity
Arik Sosman [Fri, 20 May 2022 17:56:10 +0000 (10:56 -0700)]
Merge pull request #1456 from jkczyz/2022-04-effective-capacity

Use `EffectiveCapacity` in `Score` trait

23 months agoFix rust beta docs lightning-invoice crate.
Arik Sosman [Thu, 19 May 2022 17:07:35 +0000 (10:07 -0700)]
Fix rust beta docs lightning-invoice crate.

23 months agoUse new spec repository URL.
Elias Rohrer [Fri, 20 May 2022 15:17:29 +0000 (17:17 +0200)]
Use new spec repository URL.

23 months agoScore without uncertainty for exact liquidity
Jeffrey Czyz [Wed, 27 Apr 2022 20:55:33 +0000 (15:55 -0500)]
Score without uncertainty for exact liquidity

For direct channels, the channel liquidity is known with certainty. Use
this knowledge in ProbabilisticScorer by either penalizing with the
per-hop penalty or u64::max_value depending on the amount.

23 months agoPass effective capacity to scorer
Jeffrey Czyz [Fri, 22 Apr 2022 13:21:18 +0000 (08:21 -0500)]
Pass effective capacity to scorer

Scorers could benefit from having the channel's EffectiveCapacity rather
than a u64 msat value. For instance, ProbabilisticScorer can give a more
accurate penalty when given the ExactLiquidity variant. Pass a struct
wrapping the effective capacity, the proposed amount, and any in-flight
HTLC value.

23 months agoUse correct penalty and CLTV delta in route hints
Jeffrey Czyz [Tue, 17 May 2022 21:57:55 +0000 (16:57 -0500)]
Use correct penalty and CLTV delta in route hints

For route hints, the aggregate next hops path penalty and CLTV delta
should be computed after considering each hop rather than before.
Otherwise, these aggregate values will include values from the current
hop, too.

23 months agoUse the correct amount when scoring route hints
Jeffrey Czyz [Tue, 17 May 2022 21:43:36 +0000 (16:43 -0500)]
Use the correct amount when scoring route hints

When scoring route hints, the amount passed to the scorer should include
any fees needed for subsequent hops. This worked correctly for single-
hop hints since there are no further hops, but not for multi-hint hops
(except the final one).

23 months agoDistinguish maximum HTLC from effective capacity
Jeffrey Czyz [Sun, 23 Jan 2022 23:25:38 +0000 (17:25 -0600)]
Distinguish maximum HTLC from effective capacity

Using EffectiveCapacity in scoring gives more accurate success
probabilities when the maximum HTLC value is less than the channel
capacity. Change EffectiveCapacity to prefer the channel's capacity
over its maximum HTLC limit, but still use the latter for route finding.

23 months agoPathBuildingHop::value_contribution_msat in Debug
Jeffrey Czyz [Thu, 5 May 2022 21:19:40 +0000 (16:19 -0500)]
PathBuildingHop::value_contribution_msat in Debug

23 months agoMerge pull request #1476 from tnull/2022-05-maximum-path-length
Matt Corallo [Wed, 18 May 2022 19:22:42 +0000 (19:22 +0000)]
Merge pull request #1476 from tnull/2022-05-maximum-path-length

Consider maximum path length during path finding.

23 months agoConsider maximum path length during path finding.
Elias Rohrer [Wed, 18 May 2022 16:50:43 +0000 (18:50 +0200)]
Consider maximum path length during path finding.

23 months agoMerge pull request #1472 from TheBlueMatt/2022-06-less-secp-ctx
valentinewallace [Tue, 17 May 2022 20:10:09 +0000 (16:10 -0400)]
Merge pull request #1472 from TheBlueMatt/2022-06-less-secp-ctx

Pull secp256k1 contexts from per-peer to per-PeerManager

23 months agoMerge pull request #1418 from bruteforcecat/timeout-outbound-paymnet-retires-instead...
Matt Corallo [Tue, 17 May 2022 17:32:46 +0000 (17:32 +0000)]
Merge pull request #1418 from bruteforcecat/timeout-outbound-paymnet-retires-instead-of-count-out

add timeout retry strategy to outbound payment

23 months agoadd timeout retry strategy to outbound payment
KaFai Choi [Sat, 14 May 2022 02:52:38 +0000 (09:52 +0700)]
add timeout retry strategy to outbound payment

23 months agoMerge pull request #1485 from ViktorTigerstrom/2022-05-add-force-close-param
Matt Corallo [Mon, 16 May 2022 21:48:51 +0000 (21:48 +0000)]
Merge pull request #1485 from ViktorTigerstrom/2022-05-add-force-close-param

Add missing `counterparty_node_id` in `force_close_channel` calls

23 months agoAdd missing `counterparty_node_id` in `force_close_channel` calls
Viktor Tigerström [Mon, 16 May 2022 20:25:46 +0000 (22:25 +0200)]
Add missing `counterparty_node_id` in `force_close_channel` calls

23 months agoMerge pull request #1479 from ViktorTigerstrom/2022-05-pass-counterparty-id-to-functions
Arik Sosman [Mon, 16 May 2022 19:44:16 +0000 (12:44 -0700)]
Merge pull request #1479 from ViktorTigerstrom/2022-05-pass-counterparty-id-to-functions

Pass `counterparty_node_id` to `ChannelManager` functions

23 months agoMerge pull request #1475 from atalw/2022-04-paymentforwarded-event
valentinewallace [Mon, 16 May 2022 18:21:39 +0000 (14:21 -0400)]
Merge pull request #1475 from atalw/2022-04-paymentforwarded-event

Expose `next_channel_id` in `PaymentForwarded` event

23 months agoAdd `next_channel_id` in `PaymentForwarded` event
atalw [Fri, 22 Apr 2022 07:03:18 +0000 (12:33 +0530)]
Add `next_channel_id` in `PaymentForwarded` event

This update also includes a minor refactor. The return type of
`pending_monitor_events` has been changed to a `Vec` tuple with the
`OutPoint` type. This associates a `Vec` of `MonitorEvent`s with a
funding outpoint.

We've also renamed `source/sink_channel_id` to `prev/next_channel_id` in
the favour of clarity.

23 months agoMerge pull request #1429 from TheBlueMatt/2022-04-drop-no-conn-possible
Matt Corallo [Sat, 14 May 2022 19:35:47 +0000 (19:35 +0000)]
Merge pull request #1429 from TheBlueMatt/2022-04-drop-no-conn-possible

23 months agoUpdate `OpenChannelRequest` documentation
Viktor Tigerström [Fri, 13 May 2022 21:52:20 +0000 (23:52 +0200)]
Update `OpenChannelRequest` documentation

As the `counterparty_node_id` is now required to be passed back to the
`ChannelManager` to accept or reject an inbound channel request, the
documentation is updated to reflect that.

23 months agoPass `counterparty_node_id` to `accept_inbound_channel`
Viktor Tigerström [Thu, 12 May 2022 22:13:39 +0000 (00:13 +0200)]
Pass `counterparty_node_id` to `accept_inbound_channel`

23 months agoPass `counterparty_node_id` to `funding_transaction_generated`
Viktor Tigerström [Thu, 12 May 2022 21:59:41 +0000 (23:59 +0200)]
Pass `counterparty_node_id` to `funding_transaction_generated`

23 months agoPass `counterparty_node_id` to `force_close_channel`
Viktor Tigerström [Thu, 12 May 2022 21:26:32 +0000 (23:26 +0200)]
Pass `counterparty_node_id` to `force_close_channel`

23 months agoPass `counterparty_node_id` to `close_channel` functions
Viktor Tigerström [Thu, 12 May 2022 20:31:29 +0000 (22:31 +0200)]
Pass `counterparty_node_id` to `close_channel` functions

23 months agomove Time trait from scoring mod to util::time and set it visibile within crate
KaFai Choi [Mon, 18 Apr 2022 03:32:13 +0000 (10:32 +0700)]
move Time trait from scoring mod to util::time and set it visibile within crate

23 months agoAdd `counterparty_node_id` to `FundingGenerationReady`
Viktor Tigerström [Fri, 13 May 2022 21:43:25 +0000 (23:43 +0200)]
Add `counterparty_node_id` to `FundingGenerationReady`

23 months agoMerge pull request #1480 from tnull/2022-05-fix-test-warnings
Jeffrey Czyz [Fri, 13 May 2022 17:20:56 +0000 (12:20 -0500)]
Merge pull request #1480 from tnull/2022-05-fix-test-warnings

Fix unused code warnings test.

23 months agoFix unused code warnings.
Elias Rohrer [Fri, 13 May 2022 16:03:51 +0000 (18:03 +0200)]
Fix unused code warnings.

23 months agoPull secp256k1 contexts from per-peer to per-PeerManager 2022-06-less-secp-ctx
Matt Corallo [Mon, 9 May 2022 23:03:50 +0000 (23:03 +0000)]
Pull secp256k1 contexts from per-peer to per-PeerManager

Instead of including a `Secp256k1` context per
`PeerChannelEncryptor`, which is relatively expensive memory-wise
and nontrivial CPU-wise to construct, we should keep one for all
peers and simply reuse it.

This is relatively trivial so we do so in this commit.

Since its trivial to do so, we also take this opportunity to
randomize the new PeerManager context.

23 months agoMerge pull request #1023 from TheBlueMatt/2021-07-par-gossip-processing
Matt Corallo [Wed, 11 May 2022 17:24:16 +0000 (17:24 +0000)]
Merge pull request #1023 from TheBlueMatt/2021-07-par-gossip-processing

23 months agoMerge pull request #1477 from dunxen/2022-05-invoice-expiry-nits
Matt Corallo [Wed, 11 May 2022 16:12:15 +0000 (16:12 +0000)]
Merge pull request #1477 from dunxen/2022-05-invoice-expiry-nits

23 months agoAddress post-ACK formatting nits from #1474
Duncan Dean [Wed, 11 May 2022 08:57:38 +0000 (10:57 +0200)]
Address post-ACK formatting nits from #1474

23 months agoAdd a few more simple tests of the PeerHandler 2021-07-par-gossip-processing
Matt Corallo [Tue, 12 Apr 2022 19:19:00 +0000 (19:19 +0000)]
Add a few more simple tests of the PeerHandler

These increase coverage and caught previous lockorder inversions.

23 months agoAdd support for testing recvd messages in TestChannelMessageHandler
Matt Corallo [Tue, 12 Apr 2022 19:16:38 +0000 (19:16 +0000)]
Add support for testing recvd messages in TestChannelMessageHandler

23 months agoRequire `PartialEq` for `wire::Message` in `cfg(test)`
Matt Corallo [Tue, 12 Apr 2022 19:05:15 +0000 (19:05 +0000)]
Require `PartialEq` for `wire::Message` in `cfg(test)`

...and implement wire::Type for `()` for `feature = "_test_utils"`.

23 months agoDrop a needless match in favor of an `if let`
Matt Corallo [Mon, 11 Apr 2022 17:34:11 +0000 (17:34 +0000)]
Drop a needless match in favor of an `if let`

23 months ago[net-tokio] Explicitly yield after processing messages from a peer
Matt Corallo [Tue, 22 Mar 2022 21:03:41 +0000 (21:03 +0000)]
[net-tokio] Explicitly yield after processing messages from a peer

This reduces instances of disconnect peers after single timer
intervals somewhat, at least on Tokio 1.14.

23 months agoDrop `PeerHolder` as it now only has one field
Matt Corallo [Fri, 25 Feb 2022 21:57:57 +0000 (21:57 +0000)]
Drop `PeerHolder` as it now only has one field

23 months agoKeep the same read buffer unless the last message was overly large
Matt Corallo [Mon, 11 Oct 2021 05:03:45 +0000 (05:03 +0000)]
Keep the same read buffer unless the last message was overly large

This avoids repeatedly deallocating-allocating a Vec for the peer
read buffer after every message/header.

23 months agoCreate a simple `FairRwLock` to avoid readers starving writers
Matt Corallo [Wed, 6 Oct 2021 16:58:56 +0000 (16:58 +0000)]
Create a simple `FairRwLock` to avoid readers starving writers

Because we handle messages (which can take some time, persisting
things to disk or validating cryptographic signatures) with the
top-level read lock, but require the top-level write lock to
connect new peers or handle disconnection, we are particularly
sensitive to writer starvation issues.

Rust's libstd RwLock does not provide any fairness guarantees,
using whatever the OS provides as-is. On Linux, pthreads defaults
to starving writers, which Rust's RwLock exposes to us (without
any configurability).

Here we work around that issue by blocking readers if there are
pending writers, optimizing for readable code over
perfectly-optimized blocking.

23 months agoWake reader future when we fail to flush socket buffer
Matt Corallo [Sun, 3 Oct 2021 21:44:52 +0000 (21:44 +0000)]
Wake reader future when we fail to flush socket buffer

This avoids any extra calls to `read_event` after a write fails to
flush the write buffer fully, as is required by the PeerManager
API (though it isn't critical).

23 months agoLimit blocked PeerManager::process_events waiters to two
Matt Corallo [Wed, 6 Oct 2021 04:45:07 +0000 (04:45 +0000)]
Limit blocked PeerManager::process_events waiters to two

Only one instance of PeerManager::process_events can run at a time,
and each run always finishes all available work before returning.
Thus, having several threads blocked on the process_events lock
doesn't accomplish anything but blocking more threads.

Here we limit the number of blocked calls on process_events to two
- one processing events and one blocked at the top which will
process all available events after the first completes.

23 months agoAvoid the peers write lock unless we need it in timer_tick_occurred
Matt Corallo [Wed, 6 Oct 2021 06:10:01 +0000 (06:10 +0000)]
Avoid the peers write lock unless we need it in timer_tick_occurred

Similar to the previous commit, this avoids "blocking the world" on
every timer tick unless we need to disconnect peers.

23 months agoAvoid taking the peers write lock during event processing
Matt Corallo [Sat, 25 Sep 2021 22:24:23 +0000 (22:24 +0000)]
Avoid taking the peers write lock during event processing

Because the peers write lock "blocks the world", and happens after
each read event, always taking the write lock has pretty severe
impacts on parallelism. Instead, here, we only take the global
write lock if we have to disconnect a peer.

23 months ago[net-tokio] Call PeerManager::process_events without blocking reads
Matt Corallo [Wed, 6 Oct 2021 04:29:19 +0000 (04:29 +0000)]
[net-tokio] Call PeerManager::process_events without blocking reads

Unlike very ancient versions of lightning-net-tokio, this does not
rely on a single global process_events future, but instead has one
per connection. This could still cause significant contention, so
we'll ensure only two process_events calls can exist at once in
the next few commits.

23 months agoProcess messages with only the top-level read lock held
Matt Corallo [Wed, 6 Oct 2021 06:58:15 +0000 (06:58 +0000)]
Process messages with only the top-level read lock held

Users are required to only ever call `read_event` serially
per-peer, thus we actually don't need any locks while we're
processing messages - we can only be processing messages in one
thread per-peer.

That said, we do need to ensure that another thread doesn't
disconnect the peer we're processing messages for, as that could
result in a peer_disconencted call while we're processing a
message for the same peer - somewhat nonsensical.

This significantly improves parallelism especially during gossip
processing as it avoids waiting on the entire set of individual
peer locks to forward a gossip message while several other threads
are validating gossip messages with their individual peer locks
held.

23 months agoProcess messages from peers in parallel in `PeerManager`.
Matt Corallo [Fri, 30 Jul 2021 18:03:28 +0000 (18:03 +0000)]
Process messages from peers in parallel in `PeerManager`.

This adds the required locking to process messages from different
peers simultaneously in `PeerManager`. Note that channel messages
are still processed under a global lock in `ChannelManager`, and
most work is still processed under a global lock in gossip message
handling, but parallelizing message deserialization and message
decryption is somewhat helpful.

23 months agoMerge pull request #1474 from dunxen/2022-05-actually-add-expiry
Matt Corallo [Tue, 10 May 2022 23:23:57 +0000 (23:23 +0000)]
Merge pull request #1474 from dunxen/2022-05-actually-add-expiry

lightning-invoice/utils: Actually add expiry to invoices

23 months agoAdd expiry to non-phantom invoice utils
Duncan Dean [Tue, 10 May 2022 17:01:15 +0000 (19:01 +0200)]
Add expiry to non-phantom invoice utils

23 months agoActually add expiry to phantom invoice utils
Duncan Dean [Tue, 10 May 2022 16:56:02 +0000 (18:56 +0200)]
Actually add expiry to phantom invoice utils

23 months agoMerge pull request #1465 from tnull/2022-05-encode-update-type-bytes
Matt Corallo [Mon, 9 May 2022 19:11:56 +0000 (19:11 +0000)]
Merge pull request #1465 from tnull/2022-05-encode-update-type-bytes

Encode & test `channel_update` message type in failure messages.

23 months agoMerge pull request #1471 from ViktorTigerstrom/2022-05-test-disconnected-before-fundi...
Matt Corallo [Mon, 9 May 2022 16:29:57 +0000 (16:29 +0000)]
Merge pull request #1471 from ViktorTigerstrom/2022-05-test-disconnected-before-funding-broadcasted

Add test coverage for `ClosureReason::DisconnectedPeer`

23 months agoMerge pull request #1467 from arik-so/fuzz_new_target_docs
valentinewallace [Mon, 9 May 2022 16:09:52 +0000 (12:09 -0400)]
Merge pull request #1467 from arik-so/fuzz_new_target_docs

Add documentation for creating new fuzz test targets.

23 months agoAdd test for `ClosureReason::DisconnectedPeer`
Viktor Tigerström [Sun, 8 May 2022 21:45:08 +0000 (23:45 +0200)]
Add test for `ClosureReason::DisconnectedPeer`

Add test that ensures that channels are closed with
`ClosureReason::DisconnectedPeer` if the peer disconnects before the
funding transaction has been broadcasted.

23 months agoEncode channel update type in failure messages.
Elias Rohrer [Fri, 6 May 2022 17:46:49 +0000 (19:46 +0200)]
Encode channel update type in failure messages.

2 years agoMerge pull request #1389 from lightning-signer/2022-03-bitcoin
Jeffrey Czyz [Thu, 5 May 2022 19:08:16 +0000 (14:08 -0500)]
Merge pull request #1389 from lightning-signer/2022-03-bitcoin

Update bitcoin crate to 0.28.1

2 years agoAdd documentation for creating new fuzz test targets.
Arik Sosman [Thu, 5 May 2022 00:34:35 +0000 (17:34 -0700)]
Add documentation for creating new fuzz test targets.

2 years agoImprove ShutdownScript::new_witness_program
Devrandom [Thu, 5 May 2022 16:04:55 +0000 (18:04 +0200)]
Improve ShutdownScript::new_witness_program

2 years agobitcoin crate 0.28.1
Devrandom [Thu, 5 May 2022 15:59:38 +0000 (17:59 +0200)]
bitcoin crate 0.28.1

2 years agoMerge pull request #1468 from johnpc/fix-contributing-typo
Jeffrey Czyz [Thu, 5 May 2022 13:26:59 +0000 (08:26 -0500)]
Merge pull request #1468 from johnpc/fix-contributing-typo

fix typos in CONTRIBUTING.md

2 years agofix typos in CONTRIBUTING.md
John Corser [Thu, 5 May 2022 01:35:50 +0000 (18:35 -0700)]
fix typos in CONTRIBUTING.md

2 years agoMerge pull request #1463 from TheBlueMatt/2022-05-lol-more-underflow
valentinewallace [Thu, 5 May 2022 00:36:03 +0000 (20:36 -0400)]
Merge pull request #1463 from TheBlueMatt/2022-05-lol-more-underflow

Reject outbound channels if the total reserve is larger than funding

2 years agoMerge pull request #1449 from TheBlueMatt/2022-04-fix-remote_ip_race
Matt Corallo [Wed, 4 May 2022 20:29:38 +0000 (20:29 +0000)]
Merge pull request #1449 from TheBlueMatt/2022-04-fix-remote_ip_race

[lightning-net-tokio] Fix race-y unwrap fetching peer socket address

2 years agoMerge pull request #1430 from vincenzopalazzo/macros/channel_reestablish_v2
Matt Corallo [Wed, 4 May 2022 18:48:19 +0000 (18:48 +0000)]
Merge pull request #1430 from vincenzopalazzo/macros/channel_reestablish_v2

send warning when we receive a old commitment transaction

2 years agoMerge pull request #1416 from jurvis/jurvis/persist-scorer
Jeffrey Czyz [Wed, 4 May 2022 13:28:06 +0000 (08:28 -0500)]
Merge pull request #1416 from jurvis/jurvis/persist-scorer

Add utils to persist scorer in BackgroundProcessor

2 years agosend warning when we receive a old commitment transaction
Vincenzo Palazzo [Wed, 4 May 2022 07:23:05 +0000 (09:23 +0200)]
send warning when we receive a old commitment transaction

During a `channel_reestablish` now we send a warning message when we receive a old commitment transaction from the peer.

In addition, this commit include the update of functional test to make sure that the receiver will generate warn messages.

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
2 years agoMerge pull request #1461 from TheBlueMatt/2022-05-unconf-0-not-half
valentinewallace [Wed, 4 May 2022 00:44:42 +0000 (20:44 -0400)]
Merge pull request #1461 from TheBlueMatt/2022-05-unconf-0-not-half

Force-close channels on reorg only if the funding is unconfirmed

2 years agoMerge pull request #1444 from ViktorTigerstrom/2022-04-use-counterparty-htlc-max...
Matt Corallo [Tue, 3 May 2022 22:44:26 +0000 (22:44 +0000)]
Merge pull request #1444 from ViktorTigerstrom/2022-04-use-counterparty-htlc-max-for-chan-updates

Set `ChannelUpdate` `htlc_maximum_msat` using the peer's value

2 years agoSet last_prune_call outside of persistence block
Jurvis Tan [Tue, 3 May 2022 22:29:11 +0000 (15:29 -0700)]
Set last_prune_call outside of persistence block

2 years agoAdd utils to persist scorer in BackgroundProcessor
Jurvis Tan [Thu, 28 Apr 2022 05:16:38 +0000 (22:16 -0700)]
Add utils to persist scorer in BackgroundProcessor

move last_prune_call back

2 years agoAdd correct `ChannelUpdate` `htlc_maximum_msat` test
Viktor Tigerström [Tue, 26 Apr 2022 22:43:06 +0000 (00:43 +0200)]
Add correct `ChannelUpdate` `htlc_maximum_msat` test

2 years agoSet `ChannelUpdate` `htlc_maximum_msat` using the peer's value
Viktor Tigerström [Thu, 21 Apr 2022 22:02:27 +0000 (00:02 +0200)]
Set `ChannelUpdate` `htlc_maximum_msat` using the peer's value

Use the `counterparty_max_htlc_value_in_flight_msat` value, and not the
`holder_max_htlc_value_in_flight_msat` value when creating the
`htlc_maximum_msat` value for `ChannelUpdate` messages.

BOLT 7 specifies that the field MUST be less than or equal to
`max_htlc_value_in_flight_msat` received from the peer, which we
currently are not guaranteed to adhere to by using the holder value.

2 years agoAdd test for configurable in-flight limit
Viktor Tigerström [Tue, 26 Apr 2022 22:39:52 +0000 (00:39 +0200)]
Add test for configurable in-flight limit

2 years agoMake our in-flight limit percentage configurable
Viktor Tigerström [Tue, 26 Apr 2022 22:37:45 +0000 (00:37 +0200)]
Make our in-flight limit percentage configurable

Add a config field
`ChannelHandshakeConfig::max_inbound_htlc_value_in_flight_percent_of_channel`
which sets the percentage of the channel value we cap the total value of
outstanding inbound HTLCs to.

This field can be set to a value between 1-100, where the value
corresponds to the percent of the channel value in whole percentages.

Note that:
* If configured to another value than the default value 10, any new
channels created with the non default value will cause versions of LDK
prior to 0.0.104 to refuse to read the `ChannelManager`.

* This caps the total value for inbound HTLCs in-flight only, and
there's currently no way to configure the cap for the total value of
outbound HTLCs in-flight.

* The requirements for your node being online to ensure the safety of
HTLC-encumbered funds are different from the non-HTLC-encumbered funds.
This makes this an important knob to restrict exposure to loss due to
being offline for too long. See
`ChannelHandshakeConfig::our_to_self_delay` and
`ChannelConfig::cltv_expiry_delta` for more information.

Default value: 10.
Minimum value: 1, any values less than 1 will be treated as 1 instead.
Maximum value: 100, any values larger than 100 will be treated as 100
instead.

2 years agoMerge pull request #1452 from tnull/2022-04-honor-gossip-timestamp-filters
Matt Corallo [Tue, 3 May 2022 19:16:29 +0000 (19:16 +0000)]
Merge pull request #1452 from tnull/2022-04-honor-gossip-timestamp-filters

Initiate gossip sync only after receiving GossipTimestampFilter.

2 years agoTweak `test_unconf_chan` to test that we don't prematurely close 2022-05-unconf-0-not-half
Matt Corallo [Mon, 2 May 2022 15:07:20 +0000 (15:07 +0000)]
Tweak `test_unconf_chan` to test that we don't prematurely close

2 years agoMerge pull request #1460 from TheBlueMatt/2022-04-liquidity-log
Matt Corallo [Tue, 3 May 2022 16:53:10 +0000 (16:53 +0000)]
Merge pull request #1460 from TheBlueMatt/2022-04-liquidity-log

Provide a utility to log the ProbabilisticScorer's contents

2 years agoInitiate sync only after receiving `GossipTimestampFilter`.
Elias Rohrer [Tue, 3 May 2022 07:13:09 +0000 (09:13 +0200)]
Initiate sync only after receiving `GossipTimestampFilter`.

2 years agoReject outbound channels if the total reserve is larger than funding 2022-05-lol-more-underflow
Matt Corallo [Mon, 2 May 2022 20:45:17 +0000 (20:45 +0000)]
Reject outbound channels if the total reserve is larger than funding

In 2826af75a5761859dedcddc870de0753ae4ecde4 we fixed a fuzz crash
in which the total reserve values in a channel were greater than
the funding amount, checked when an incoming channel is accepted.

This, however, did not fix the same issue for outbound channels,
where a peer can accept a channel with a nonsense reserve value in
the `accept_channel` message. The `full_stack_target` fuzzer
eventually found its way into the same issue, which this resolves.

Thanks (again) to Chaincode Labs for providing the fuzzing
resources which found this bug!

2 years agoMerge pull request #1447 from andozw/seana.20220422.avoid-storing-FinalOnionHopData
Matt Corallo [Mon, 2 May 2022 20:21:44 +0000 (20:21 +0000)]
Merge pull request #1447 from andozw/seana.20220422.avoid-storing-FinalOnionHopData

Avoid storing a full FinalOnionHopData in OnionPayload::Invoice

2 years agoProvide a utility to log the ProbabilisticScorer's contents 2022-04-liquidity-log
Matt Corallo [Thu, 28 Apr 2022 22:32:52 +0000 (22:32 +0000)]
Provide a utility to log the ProbabilisticScorer's contents

I wrote this when debugging a user's scorer and figured it may be
useful upstream.

2 years agoAvoid storing a full FinalOnionHopData in OnionPayload::Invoice
Matt Corallo [Thu, 28 Apr 2022 17:10:04 +0000 (10:10 -0700)]
Avoid storing a full FinalOnionHopData in OnionPayload::Invoice

We only use it to check the amount when processing MPP parts, but
store the full object (including new payment metadata) in it.
Because we now store the amount in the parent structure, there is
no need for it at all in the `OnionPayload`. Sadly, for
serialization compatibility, we need it to continue to exist, at
least temporarily, but we can avoid populating the new fields in
that case.

2 years agoStore total payment amount in ClaimableHTLC explicitly
Matt Corallo [Tue, 21 Dec 2021 22:10:43 +0000 (22:10 +0000)]
Store total payment amount in ClaimableHTLC explicitly

...instead of accessing it via the `OnionPayload::Invoice` form.
This may be useful if we add MPP keysend support, but is directly
useful to allow us to drop `FinalOnionHopData` from `OnionPayload`.

2 years agoPass FinalOnionHopData to payment verify by reference, not clone
Matt Corallo [Tue, 21 Dec 2021 20:21:34 +0000 (20:21 +0000)]
Pass FinalOnionHopData to payment verify by reference, not clone

2 years agoAdd a test for socket connection races 2022-04-fix-remote_ip_race
Matt Corallo [Mon, 25 Apr 2022 18:39:28 +0000 (18:39 +0000)]
Add a test for socket connection races

Sadly this does not reproduce the issue fixed in the previous
commit.

2 years agoForce-close channels on reorg only if the funding is unconfirmed
Matt Corallo [Mon, 2 May 2022 02:51:50 +0000 (02:51 +0000)]
Force-close channels on reorg only if the funding is unconfirmed

Currently, if a channel's funding is locked in and then later
reorg'd back to half of the channel's minimum-depth we will
immediately force-close the channel. However, this can happen at
the fork-point while processing a reorg, and generally reorgs do
not reduce the block height at all, making this a rather useless
endeavor.

Ideally we'd never auto-force-close channels at all due to a reorg,
instead simply marking it as inactive until the funding
transaction is re-confirmed (or allowing the user to attempt to
force-close or force-closing once we're confident we have
completed reorg processing if we're at risk of losing funds
already received in the channel).

Sadly, we currently do not support changing a channel's SCID and
updating our SCID maps, so we cannot yet remove the automated
force-close logic. Still, there is no reason to do it until a
funding transaction has been removed from the chain.

This implements that change - only force-closeing once a channel's
funding transaction has been reorg'd out (still potentially at a
reorg's fork point). This continues to imply a 1-confirmation
channel will always be force-closed after a reorg of the funding
transaction, and will imply a similar behavior with 0-conf
channels.

2 years agoMerge pull request #1451 from TheBlueMatt/2022-04-moar-mpp-fail-test
Matt Corallo [Fri, 29 Apr 2022 19:50:37 +0000 (19:50 +0000)]
Merge pull request #1451 from TheBlueMatt/2022-04-moar-mpp-fail-test

Add test coverage for failure of inconsistent MPP parts

2 years agoMerge pull request #1454 from TheBlueMatt/2022-04-fuzz-underflow
Matt Corallo [Thu, 28 Apr 2022 21:56:49 +0000 (21:56 +0000)]
Merge pull request #1454 from TheBlueMatt/2022-04-fuzz-underflow

Reject channels if the total reserves are larger than the funding

2 years agoMerge pull request #1425 from valentinewallace/2021-04-wumbo
Matt Corallo [Thu, 28 Apr 2022 21:14:19 +0000 (21:14 +0000)]
Merge pull request #1425 from valentinewallace/2021-04-wumbo

Wumbo!

2 years agoCorrect error when a peer opens a channel with a huge push_msat 2022-04-fuzz-underflow
Matt Corallo [Thu, 28 Apr 2022 19:46:22 +0000 (19:46 +0000)]
Correct error when a peer opens a channel with a huge push_msat

The calculation uses the reserve, so we should mention it in the
error we send to our peers.

2 years agoReject channels if the total reserves are larger than the funding
Matt Corallo [Thu, 28 Apr 2022 19:46:13 +0000 (19:46 +0000)]
Reject channels if the total reserves are larger than the funding

The `full_stack_target` fuzzer managed to find a subtraction
underflow in the new `Channel::get_htlc_maximum` function where we
subtract both sides' reserve values from the channel funding. Such
a channel is obviously completely useless, so we should reject it
during opening instead of integer-underflowing later.

Thanks to Chaincode Labs for providing the fuzzing resources which
found this bug!

2 years agoEnable wumbo channels to be created
Valentine Wallace [Fri, 15 Apr 2022 22:10:39 +0000 (18:10 -0400)]
Enable wumbo channels to be created

Also redefine MAX_FUNDING_SATOSHIS_NO_WUMBO to no longer be off-by-one.

2 years agoconfig: add max_funding_satoshis to enforce for inbound channels
Valentine Wallace [Fri, 15 Apr 2022 21:34:59 +0000 (17:34 -0400)]
config: add max_funding_satoshis to enforce for inbound channels

and a bonus grammar fix