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>
1. Add remote_ann_node_sigs and remote_bitcoin_sigs fields in channel_init message;
2. Master add announcement signatures into channel_init message, and send this message to Channeld.
Channeld will initial the channel with this signatures when it reenables the channel.
Unfortuntely we get spurious uninitialized variable warnings with
anything but -O3 or no optimization, so set default CWARNFLAGS
appropriately.
MCP bench results without optimization:
store_load_msec:28509-31001(29206.6+/-9.4e+02)
vsz_kb:580004-580016(580006+/-4.8)
store_rewrite_sec:11.640000-12.730000(11.908+/-0.41)
listnodes_sec:1.790000-1.880000(1.83+/-0.032)
listchannels_sec:21.180000-21.950000(21.476+/-0.27)
routing_sec:2.210000-11.160000(7.126+/-3.1)
peer_write_all_sec:36.270000-41.200000(38.168+/-1.9)
MCP bench with -Og: 22% speedup vs no optimization
store_load_msec:21963-23645(22841+/-6.6e+02)
vsz_kb:579916
store_rewrite_sec:10.080000-10.960000(10.456+/-0.3)
listnodes_sec:1.280000-1.390000(1.338+/-0.047)
listchannels_sec:14.770000-16.080000(15.518+/-0.46)
routing_sec:0.990000-6.660000(3.958+/-2.2)
peer_write_all_sec:29.950000-32.950000(31.138+/-1)
MCP bench with -O2: 31% speedup vs no optimization
store_load_msec:20713-22088(21505.6+/-4.8e+02)
vsz_kb:579928
store_rewrite_sec:9.570000-11.200000(10.192+/-0.54)
listnodes_sec:0.960000-1.090000(1.028+/-0.045)
listchannels_sec:10.400000-11.770000(11.012+/-0.48)
routing_sec:0.300000-3.140000(1.978+/-1.1)
peer_write_all_sec:28.980000-30.310000(29.572+/-0.44)
MCP bench with -O3 -flto: 36% speedup vs no optimization
store_load_msec:19616-20191(19862.6+/-1.9e+02)
vsz_kb:578452
store_rewrite_sec:8.980000-9.960000(9.55+/-0.32)
listnodes_sec:0.920000-1.910000(1.18+/-0.38)
listchannels_sec:8.960000-9.450000(9.206+/-0.16)
routing_sec:0.730000-1.850000(1.438+/-0.42)
peer_write_all_sec:28.090000-29.410000(28.772+/-0.42)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Without this, the connect command hangs in one of my branches. This logic
is from the old days when gossipd handled connections, and we wanted
to make sure it didn't hang up on this client due to the error.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
68fe5eacde introduced a skip in the iteration
of the available funds, which means utxos[i] may be off the end of utxos.
Reported-and-debugged-by: @nitramiz
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The spec says not to send a commitment_signed without any changes, but LND
does this. To understand why, you have to understand how LND works. I
haven't read the code, but I'm pretty sure it works like this:
1. lnd slows down to do garbage collection, because it's in Go.
2. When an alert timer goes off, noticing it's not making process, it
sends a twitter message to @roasbeef.
3. @roasbeef sshs into the user's machine and binary patches lnd to send
a commitment_signed message.
4. Unfortunately he works so fast that various laws of causality are broken,
meaning sometimes the commitment_signed is sent before any of thes
other things happen.
I'm fairly sure that this will stop as @roasbeef ages, or lnd introduces
some kind of causality enforcement fix.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This also allows plugins to do "hold invoices" a-la LND, useful for
just-in-time inventory handling.
We're careful to handle the invoice getting paid behind our backs, and
the incoming HTLC going away.
Once @cdecker's sphinx rework is in, we can also hand the raw payload
to the invoice_payment_hook, for special effects.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell
darosior
Kristaps Kaupe
Karl-Johan Alm
lisa neigut
ZmnSCPxj
Christian Decker
trueptolemy
Simon Vrouwe
Michael Schmoock