If we expect further events for an onchain output (because we can steal
it away from the 'external'/rightful owner), we mark them.
This prevents us from marking a channel as 'onchain-resolved' before
all events that we're interested in have actually hit the chain.
Case that this matters:
Peer publishes a (cheating) unilateral close and a timeout htlc (which
we can steal).
We then steal the timeout htlc.
W/o the stealable flag, we'd have marked the channel as resolved when
the peer published the timeout htlc, which is incorrect as we're still
waiting for the resolution of that timeout htlc (b/c we *can* steal it).
if it's an elements chain, subtract one from the output count
we wait to calculate fees for a channel close until all the outputs are
accounted for, but elements chains create a separate output for the
amount of fees that are paid on a tx.
fixes crash in `test_penalty_rbf_burn`
Anchor outputs are ignored by the clightning wallet, but we keep track
of them in the bookkeeper. This causes problems when we do the balance
checks on restart w/ the balance_snapshot -- it results in us printing
out a journal_entry to 'get rid of' the anchors that the clightning node
doesnt know about.
Instead, we mark some outputs as 'ignored' and exclude these from our
account balance sums when we're comparing to the clightning snapshot.
We cleanup our output tracking for timeout txs when the peer's
htlc_timeout self-expiry is hit; we'd also log its spend if happen to
see it get spent.
This is a bit of a race as they can't spend it until the locktime is
available. Hence the flakiness in tests that expected the `htlc_timeout`
to *not* be spent.
Instead, we only log an external's `htlc_timeout` spend in the case
where we also immediately register another output to track for it (only
happens when said htlc is stealable)
Fixes#5405
In-Collab-With: @ddustin
The signatures on the new examples are sometimes different from what we produce though?
They're valid, however.
And one example has an unneeded feature 5-bit; it's not *wrong*, but
it's not optimal.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We get sent three corresponding arrays:
1. htlc stubs
2. whether we want to know if they're missing,
3. whether to wait 3 blocks or tell us immediately
We then sorted the htlc stubs by CLTV, *but didn't sort the corresponding arrays*.
This fixes that the simplest way possible, and probably also:
Fixes: #4649
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: onchaind: we sometimes failed to close upstream htlcs if more than one HTLC is in flight during unilateral close.
And in particular, fix onchaind grinding code which used the
actual number of inputs and outputs (which already includes the
fee output); that breaks with the next patch which fixes other
calculations.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
As connectd handles more packets itself, or diverts them to/from gossipd,
it's the only place we can implement the dev_disconnect logic.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. tal_strndup(.., str, strlen(str)) == tal_strdup()
2. tal_strdup also takes(), so document that.
3. Avoid passing 'struct sha256' on the stack: use ptr.
4. Generally, structures shouldn't keep pointers to things they don't own.
In this case, mvt->node_id.
5. Make payment_hash a pointer, since NULL is more natural than an all-zero
hash.
And add NON_NULL_ARGS() to the functions; it's cumbersome, but make it
fairly clear what params are optional.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
we used this originally to suppress duplicate issuance of coin-move
events; we're assuming that any plugin expects duplicate events though
(and knows how to de-dupe them), so we no longer need this logic.
The old model of coin movements attempted to compute fees etc and log
amounts, not utxos. This is not as robust, as multi-party opens and dual
funded channels make it hard to account for fees etc correctly.
Instead, we move towards a 'utxo' view of the onchain events. Every
event is either the creation or 'destruction' of a utxo. For cases where
the value of the utxo is not (fully) debited/credited to our account, we
also record the output_value. E.g. channel closings spend a utxo who's
entire value we may not own.
Since we're now tracking UTXOs onchain, we can now do more complex
assertions about the onchain footprint of them. The integration tests
have been updated to now use more 'chain aware' assertions about the
ending state.
And turn "" includes into full-path (which makes it easier to put
config.h first, and finds some cases check-includes.sh missed
previously).
config.h sets _GNU_SOURCE which really needs to be done before any
'#includes': we mainly got away with it with glibc, but other platforms
like Alpine may have stricter requirements.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This makes init a two-stage, and causes some code hoisting.
And we can now send all the HTLCs in a single message, since we have
an 128MB limit and each HTLC is 37 bytes.
This breaks the onchaind stresstest, which uses canned internal messages.
It's time to finally delete that.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
By popular merge-hell demand.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Build: Python is now required to build, as generated files are no longer checked into the repository.
Before:
Ten builds, laptop -j5, no ccache:
```
real 0m36.686000-38.956000(38.608+/-0.65)s
user 2m32.864000-42.253000(40.7545+/-2.7)s
sys 0m16.618000-18.316000(17.8531+/-0.48)s
```
Ten builds, laptop -j5, ccache (warm):
```
real 0m8.212000-8.577000(8.39989+/-0.13)s
user 0m12.731000-13.212000(12.9751+/-0.17)s
sys 0m3.697000-3.902000(3.83722+/-0.064)s
```
After:
Ten builds, laptop -j5, no ccache: 8% faster
```
real 0m33.802000-35.773000(35.468+/-0.54)s
user 2m19.073000-27.754000(26.2542+/-2.3)s
sys 0m15.784000-17.173000(16.7165+/-0.37)s
```
Ten builds, laptop -j5, ccache (warm): 1% faster
```
real 0m8.200000-8.485000(8.30138+/-0.097)s
user 0m12.485000-13.100000(12.7344+/-0.19)s
sys 0m3.702000-3.889000(3.78787+/-0.056)s
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is best-practice (to ensure prototypes match up), but there were a
few places we didn't (at least, directly). Make it a requirement,
either of form "foo.h" or <dir/foo.h>.
The noise is the change to our print templates.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We make it a first-class citizen internally, even though we won't use
it over the wire (at least, non-experimental builds). This scheme
follows the latest draft, in which features are flagged compulsory.
We also add several helper functions.
Since uses the *even* bits (as per latest spec), not the *odd* bits,
we have some other fixups.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We want to use this to handle the simple description for channel_type.
It also needs to handle variable-size types (just like subtypes).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This touches a lot of text, mainly to change "if `option_anchor_outputs`"
to "if `option_anchors`"
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
option_will_fund changes the to_remote/to_local commitment tx
outputs by altering the CSV lock for leased channels.
We need to grind/scan for these outputs now, provided the defaults don't
work.
We don't handle our own cheat txs: rather than crash, we should just
log broken and limp along.
This also makes our upcoming penalty test easier: we don't have to
spin up a new node.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
niftynei
Rusty Russell
Ken Sedgwick
Michael Schmoock
Christian Decker