This is probably worth preventing.
1. Our depth estimate would be inaccurate possibly leading to us
timing out too early.
2. If we're not up-to-date our onchain funds are unknown.
3. We wouldn't be able to send or receive HTLCs until we're synced anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
`close` takes two optional arguments: `force` and `timeout`.
`timeout` doesn't timeout the close (there's no way to do that), just
the JSON call. `force` (default `false`) if set, means we unilaterally
close at the timeout, instead of just failing.
Timing out JSON calls is generally deprecated: that's the job of the
client. And the semantics of this are confusing, even to me! A
better API is a timeout which, if non-zero, is the time at which we
give up and unilaterally close.
The transition code is awkward, but we'll manage for the three
releases until we can remove it.
The new defaults are to unilaterally close after 48 hours.
Fixes: #2791
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The helpme plugin is more comprensive, but this at least connects to a
few random nodes, and doesn't require python libraries in path or anything.
I selected the nodes from helpme.py, eliminating ones I couldn't reach.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Note that we move adding the plugin to the plugins list to the end, otherwise
the hook from logging can examine the (uninitialized) plugin.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is easy since we did the option parsing cleanup, but it has the
effect that plugins are launched from the lightning-dir. Now
we have dynamic plugins, this means startup and post-startup plugins
experience the same environment.
This is absolutely a desirable thing: they can just drop files in
their cwd rather than having to move (including, I might note, core
files!).
We also highlight the change in various places (and a drive-up update
of PLUGINS.md which says you have to use --plugin).
The next patch adds a backwards compatibility wedge for old users of
relative plugin paths.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The reason lnd was sending sync error was that we were taking more than
30 seconds to send the channel_reestablish after connect. That's
understandable on my test node under valgrind, but shouldn't happen normally.
However, it seems it has at least once,
(see https://github.com/ElementsProject/lightning/issues/2847)
: space out startup so it's less likely to happen.
Suggested-by: @cfromknecht
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
updates the bolt version to 6639cef095a2ecc7b8f0c48c6e7f2f906fbfbc58.
this requires us to use the new bolt parser at generate-bolt.py
and updates to all of the type specifications (ie. from u8 -> byte)
Due to API instability we are disabling the RPC method for this release, but
will re-enable it after the release again.
Signed-off-by: Christian Decker <@cdecker>
This is a painpoint with testing, that there's a noticable delay between
"Shutting down" from lightning-cli and being able to restart lightningd.
This fixes that by creating a canned response for this case, which is
simply written out immediately before exit. At this point, the pidfile
has been deleted, the sockets have been closed, and the database
has been closed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The next commit breaks it: `if b' }\n' not in buff:` is always true since
we're about to clean up our JSON so there won't be a space. I could have
hacked the space in our JSON, but 6 months is long enough anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
@pm47 gave a great bug report showing c-lightning sending the same
UPDATE_FEE over and over, with the final surprise result being that we
blamed the peer for sending us multiple empty commits!
The spam is caused by us checking "are we at the desired feerate?" but
then if we can't afford the desired feerate, setting the feerate we
can afford, even though it's a duplicate. Doing the feerate cap before
we test if it's what we have already eliminates this.
But the empty commits was harder to find: it's caused by a heuristic in
channel_rcvd_revoke_and_ack:
```
/* For funder, ack also means time to apply new feerate locally. */
if (channel->funder == LOCAL &&
(channel->view[LOCAL].feerate_per_kw
!= channel->view[REMOTE].feerate_per_kw)) {
status_trace("Applying feerate %u to LOCAL (was %u)",
channel->view[REMOTE].feerate_per_kw,
channel->view[LOCAL].feerate_per_kw);
channel->view[LOCAL].feerate_per_kw
= channel->view[REMOTE].feerate_per_kw;
channel->changes_pending[LOCAL] = true;
}
```
We assume we never send duplicates, so we detect an otherwise-empty
change using the difference in feerates. If we don't set this flag,
we will get upset if we receive a commitment_signed since we consider
there to be no changes to commit.
This is actually hard to test: the previous commit adds a test which
spams update_fee and doesn't trigger this bug, because both sides
use the same "there's nothing outstanding" logic.
Fixes: #2701
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This allows you to prepare a tx, then release or discard it later.
Shares almost all the code with json_withdraw (which is now technically
superfluous).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
ZmnSCPxj
Rusty Russell
Christian Decker
trueptolemy
darosior
Kristaps Kaupe
Karl-Johan Alm
lisa neigut
Simon Vrouwe