This is a difficult transition for us: this string appears in channel
types. We make the transition now in the understanding that it will
be more difficult in future.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: JSON-RPC: `listpeers` `features` array string "option_anchors_zero_fee_htlc_tx": use "option_anchors" (spec renamed it).
Changelog-Added: JSON-RPC: `listpeers` `features` array string uses "option_anchors" for feature 22/23, following renaming in BOLT 9.
Changelog-Changed: JSON-RPC: `listclosedchannels`, `listpeerchannels`, `openchannel_update`, `openchannel_init`, `fundchannel`, `fundchannel_start` and `multifundchannel`: `channel_type` array `names` now contains "anchors" instead of "anchors_zero_fee_htlc_tx".
Changelog-Changed: lightningd: `--list-features-only` now lists "option_anchors" instead of "option_anchors_zero_fee_htlc_tx".
These were removed from the spec.
We still support existing ones, though we were the only implementation
which ever did, and only in experimental mode, so we should be able to
upgrade them and avoid a forced close, with a bit of engineering...
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We still support *existing* channels. Just not new ones (before they could,
in theory, explicitly ask for one).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We used to fire up channeld to send this, but:
1. That's silly, we have all the information to make it ourselves.
2. We didn't do it if there was an error on the channel, which as of 24.02
there always is!
3. When it did work, running channeld *stops* onchaind, indefinitely slowing recovery.
Fixes: https://github.com/Blockstream/greenlight/issues/433
Changelog-Fixed: Protocol: we once again send CHANNEL_REESTABLISH responses on closing channels.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The feerate security margin is a multiplicative factor applied to the
feerate of some transactions in order to guarantee that the
transaction remains publishable and has a sufficient chance of being
confirmed, that we can base some of our decisions on that.
The multiplicative factor is >=1 and was so far a constant 2. This
might have been sensible in the low-fee environment, where the fees
are expected to oscillate, and almost guaranteeing that we will
eventually have rising feerates but in high-fee environments that is
no longer the case, and the 100% margin that the multiplicator 2
brings is excessive. We therefore opt to start out with 100%, then
linearly interpolate up to a given maxfeerate (which does not have to
be a real feerate ever reached, it just indicates the feerate after
which we apply the constant 10% margin.
Fixes#6974Closes#6976
[Fixed up all the other changes required, including spendable calcualtion
comments and unit test and pytest tests --RR]
1024 is a common limit, and people are starting to hit that many channels, so we should increase it: twice the number of channels seems reasonable, though we only do this at restart time.
Changelog-Changed: lightningd: we now try to increase the number of file descriptors, if it's less than twice the number of channels at startup (and log if we cannot!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's a u64, we should pass by copy. This is a big sweeping change,
but mainly mechanical (change one, compile, fix breakage, repeat).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is the convention everywhere else: allocation ctx comes first, any
other context comes second.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This has the benefit of being shorter, as well as more reliable (you
will get a link error if we can't print it, not a runtime one!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This isuseful to find completely dead channels which are worthy of
closing.
Changelog-Added: JSON-RPC: `listpeerchannels` field `last_stable_connection` showing when we last held an established channel for a minute or more.
Changelog-Added: JSON-RPC: `listclosedchannels` field `last_stable_connection` showing when we last held an established channel for a minute or more.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is useful to see if we've really made progress, or just bounced
off the peer (e.g. it doesn't know the channel, or we have fallen
behind somehow).
Changelog-Added: JSON-RPC: `listpeerchannels` new field `reestablished` set once we've exchanged `channel_reestablish` messages.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In particular, we were sending `announcement_signatures` before
`channel_reestablish`; we allow this because LND used to do it, but
it's not spec compliant.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It then waits 10 more seconds (for plugins to call setlease, especially)
before it will update a node_announcement.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rather than take the first two from peers with committed channels, use
the most common address given by at least 2 peers, and accept the majority
from non-committed peers if there are no committed peers.
This works well with the node_announcement rework, which waits until
everyone has a chance to connect before creating the node_announcement.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is a bit messy, but it tries to do the minimal switchover.
Some tests change, so those are included here.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I did some CHANGELOG and git digging to see when these were deprecated, and
some were very old (v0.8.2!). But since they didn't warn users loudly, I
chose to do so this release only.
I renamed ld's `deprecated_apis` to `deprecated_ok` to make sure I
caught them all.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is redundant if it's a public channel, but vital if it's not. Publishing unconditionally makes
it easier for gossmap: we create a local modification all the time, even if redundant (and we can
have the actual capacity ceiling accurate in this case, since we know it for local channels).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `listpeerchannels` now shows gossip update contents (even if channel unannounced).
From the spec:
Once peers are ready to exchange commitment signatures, they must remember
the details of the funding transaction to allow resuming the signatures
exchange if a disconnection happens.
Basically this means we add channels to the database before we've gotten
commitments for them; it's nice that there's now a state for commitments
recevied but we now save the channel prior to that.
This commit makes it possible to track the pre-commit-rcvd but not quite
open-init state.
This means refactoring out some of the generic anchor info, from the
per-commitment-tx info (we can have at least two, perhaps more with
splicing!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This makes `check` much more thorough, and useful.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `check` now does much more checking on every command (not just basic parameter types).
We had a complaint that you can't CPFP a mutual close, which you
should be able to do.
Fixes: #6692
Changelog-Fixed: wallet: close change outputs show up immediately in `listfunds` so you can CPFP.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now we've asserted that channeld would tell lightningd the same thing it
would do anyway, we can simply have channeld say "enable=True|False" and
lightningd fill in the other fields.
This means there's a pile of things channeld doesn't need to know any more!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Previously, every broadcast was attached to a channel, but we can
make it explicit, so when the context is freed, the re-broadcast stops
(if rebroadcast is set).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Previously, we would forward the message to a subd, but now we have
the case where the subd is gone, but we're still connected. If the
peer anything but a reestablish in that state, we drop the connection.
Instead, an error should always make us fail the channel.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now we're not always using the same functions to watch during
dual-funding opening, we need to make sure we're watching the close
(in particular, df close before the opening is confirmed).
So, keep a pointer, and if it's not set in drop_to_chain, set it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We used the original channel funding output number. I'm not sure if this
was true in the previous code, or a regression I introduced, but it
caused occasonal failures in test_splice_gossip!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We use the *same* callback for the funding tx, as well as for inflight dual-funding txs, as well as inflight splice txs. This is deeply confusing!
Instead, use explicit cbs for splicing and df. Once they're locked in, use the normal callback.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The latter is used when we're put in the db, the former is the uncommitted state.
Currently dbid == 0 is used in addition to the state, which is unwieldy.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Experimental: JSON-RPC: added new dual-funding state `DUALOPEND_OPEN_COMMITTED`
We usually hand times by copy, not by pointer (and if we did, they should
be const!). I noticed this particularly for the state changed code, but
it goes down to to json_add_timeiso, so I fixed that too.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We should use capability tests for states (can you add htlcs?) rather than vague
descriptions (are you closing?).
And as much as possible, use switch () statements to force us to think
about all the cases, especially when we add new states!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Currently it's half done in funding_depth_cb, and half in
channeld_tell_depth. It's very confusing as a result,
with splicing, dual-funding and zeroconf.
This does introduce a behaviour change: if a channel is NORMAL and
it gets reorganized, we force close (unless we were the one who funded
it, or it's zeroconf anyway). This is safer than continuing to use
the channel in this case!
Some tests are changed to zeroconf to make them work, but v2 doesn't
support zeroconf, so that's removed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
