We were actually using the last commit tx's size, since we were
setting it in lightningd. Instead, hand the min and desired feerates
to closingd, and (as it knows the weight of the closing tx), and have
it start negotiation from there.
This can be significantly less when anchor outputs are enabled: for
example in test_closing.py, the commit tx weight is 1124 Sipa, the
close is 672 Sipa!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Protocol: Use a more accurate fee for mutual close negotiation.
In general, it's better to omit a field than put in a 'null', and
putting variable-named fields in an object is also a bad idea.
This is reflected in how hard this is to express in JSON schema, too.
Others:
1. Remove the obsolete "funding": "LOCAL" from unopened channels, but add
"opener": "local" as used in normal channels.
2. htlc cltv_expiry is a u16.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: JSON-RPC: `listfunds` `channels` `funding_allocation_msat` and `funding_msat`: use `funding`.
Changelog-Deprecated: JSON-RPC: `listfunds` `channels` `last_tx_fee`: use `last_tx_fee_msat`.
Changelog-Deprecated: JSON-RPC: `listfunds` `channels` `closer` is now omitted if it does not apply, not JSON `null`.
Annotating the htlc in `listpeers` with their current status, and
which plugin is currently holding on to them with their
`htlc_accepted` hook can help us debug where plugins may go wrong.
Changelog-Added: jsonrpc: HTLCs in `listpeers` are now annotated with a status if they are waiting on an `htlc_accepted` hook of a plugin.
result should *always* be an object. This allows it to add fields
without breaking the API. A command which returns "result" as a
string is living in sin.
This changes one of the two callers of "command_success_str".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Since plugins will start sending them soon, and they are likely to get
it wrong sometimes, be a bit more lenient, warn them in the logs
instead and then make sure it doesn't accidentally work anyway.
We will eventually start emitting and dispatching custom notifications
from plugins just like we dispatch internal notifications. In order to
get reasonable error messages we need to make sure that the topics
plugins are asking for were correctly registered. When doing this we
don't really care about whether the plugin that registered the
notification is still alive or not (it might have died, but
subscribers should stay up and running), so we keep a list of all
topics attached to the `struct plugins` which gathers global plugin
information.
This avoids spamming the logs. We also remove the duplicate debug
logs on self-disable (plugin_kill logs it for us).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If a plugin died due to connection close, we'd always say
"Plugin exited before completing handshake.", which was often
wrong.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If not all nodes are up-to-date with the new blocks, they can reject
announcements:
```
lightningd-4: 2021-02-23T02:02:47.832Z DEBUG 022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59-gossipd: Ignoring future channel_announcment for 124x1x0 (current block 123)
lightningd-4: 2021-02-23T02:02:47.848Z DEBUG lightningd: Adding block 133: 2d950451211398de9c10bf9df7eb53b385390eca31e306bc8fc1387b53d9f9a2
lightningd-4: 2021-02-23T02:02:47.865Z DEBUG 022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59-gossipd: Bad gossip order: WIRE_CHANNEL_UPDATE before announcement 124x1x0/0
lightningd-4: 2021-02-23T02:02:47.866Z DEBUG 022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59-gossipd: Bad gossip order: WIRE_CHANNEL_UPDATE before announcement 124x1x0/1
```
Technically, this change is not sufficient either, since *gossipd* might
not know about new block yet. But it makes this case less likely.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
LightningNode.join_nodes and LightningNode.openchannel internally
generate blocks, which causes nodes to be out of sync, and ignore
"future" announcements, because they haven't seen that block yet.
Since we turned many errors into warnings, we want our tests to fail
when they happen unexpectedly. We make WARNING clear in the strings
we print, too, to help out.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
No more sending "all-channel" errors; in particular, gossipd now only
sends warnings (which make us hang up), not errors, and peer_connected
rejections are warnings (and disconnect), not errors.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Plugins: `peer_connected` rejections now send a warning, not an error, to the peer.
Nit: The underscore in "openchannel_hook" is wrong, bcause the name of
the hook is just "openchannel". The "_hook" implied this to be part of
the name.
Changelog-None
The fetchinvoice and offers plugins disable themselves if the option
isn't enabled (it's enabled by default on EXPERIMENTAL_FEATURES).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: `experimental-offers` enables fetch, payment and creation of (early draft) offers.
By returning 'disable: <reason>' inside getmanifest or init result.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: plugins: plugins can now disable themselves by returning `disable`, even if marked important.
1. Hoist 7200 constant into the bolt12 heade2.
2. Make preimage the last createinvoice arg, so we could make it optional.
3. Check the validity of the preimage in createinvoice.
4. Always output used flag in listoffers.
5. Rename wallet offer iterators to offer_id iterators.
6. Fix paramter typos.
7. Rename `local_offer_id` parameter to `localofferid`.
8. Add reference constraints on local_offer_id db fields.
9. Remove cut/paste comment.
10. Clarify source of fatal() messages in wallet.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
"multi" means that specifying a parameter twice will append, not override.
Multi args are always given as a JSON array, even if only one.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Plugins: new "multi" field allows an option to be specified multiple times.
This was fixed in 0.8.2.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Removed: plugins: options to init are no longer given as strings if they are bool or int types (deprecated in 0.8.2).
The latter is available only starting with Python 3.7, and it's the
only test that fails with <3.7. This allows us to keep on testing with
older versions.
We previously registered hooks up in who-replies-to-getmanifest-first
order, but then if any had dependencies it would scatter that order.
This allows users to manually set dependencies developers have
forgotten by specifying the plugins manually in their configuration or
cmdline. This was an excellent consideration by @mschmook.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We're rarely in a hurry here, and bitcoind is aggressive with fees.
You can always spend this output if you really have to, using CPFP.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Protocol: mutual closing feerate reduced to "slow" to avoid overpaying.
We added a conversion of failcodes that do not have sufficient information in
faac4b28ad. That means that a failcode that'd require additional information
in order to be a correct error to return in an onion is mapped to a generic
one since we can't backfill the information.
This tests that the mapping is performed correctly and replicates the
situation in #4070
Hooks do not tolerate failures at all. If we return a JSON-RPC error to a hook
call the only thing the main daemon can really do is to crash. This commit
adds a mapping of error to a safe fallback result, including a warning to the
node operator that this should be addressed in the plugin. The warning is
reported as a `**BROKEN**` message, and should therefore fail any testing done
on the plugin.
Changelog-Fixed: pyln: Fixed HTLCs hanging indefinitely if the hook function raises an exception. A safe fallback result is now returned instead.
Changelog-Deprecated: plugin: `bcli` replacements should note that `sendrawtransaction` now has a second required Boolean argument, `allowhighfees`, which if `true`, means ignore any fee limits and just broadcast the transaction. Use `--deprecated-apis` to use older `bcli` replacement plugins that only support a single argument.
First, simplify: amount is set to 1000000, but then we deposit 1000000 + 0.01btc
(i.e. 2000000), and we always use 2 * amount. Just use a single constant to
make it clear.
Secondly, we assume that the wallet considers outputs spent as soon as
we created the tx: this will not be true once withdraw uses sendpsbt.
So, we generate blocks, but now sometimes withdraw will pick up change
txs, so we need to reserve them to avoid that messing our coinmovements.
Finally, we assumed the withdrawl order was BIP69, which becomes
variable.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
With a feerate of 7500perkw and subtracting 660 sats for anchors, a
20,000 sat channel has capacity about 9800 sat, below our default:
You gave bad parameters: channel capacity with funding 20000sat, reserves 546sat/546sat, max_htlc_value_in_flight_msat is 18446744073709551615msat, channel capacity is 9818sat, which is below 10000000msat
So bump channel amounts.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Anchor outputs break many assumptions in our tests:
1. Remove some hardcoded numbers in favor of a fee calc, so we only have to
change in one place.
FIXME: This should also be done for elements!
2. Do binary search to get feerate for a given closing fee.
3. Don't assume output #0: anchor outputs perturb them.
4. Don't assume we can make 1ksat channels (anchors cost 660 sats!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's currently always 0, but it won't be once we replace txprepare.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `fundchannel` has new `outnum` field indicating which output of the transaction funds the channel.
On my test machine, we queried bitcoind before the close tx was sent:
```
# When output is spent, it should give us null !
txo = l1.rpc.call("getutxout", {"txid": txid, "vout": 0})
> assert txo["amount"] is txo["script"] is None
E AssertionError: assert '20000000msat' is '00205b8cd3b914cf67cdd8fa6273c930353dd36476734fbd962102c2df53b90880cd'
tests/test_plugin.py:1221: AssertionError
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I started replacing all get_node() calls, but got bored, so then just did the
tests which call get_node() 3 times or more.
Ends up not making a measurable speed difference, but it does make some
things neater and more standard.
Times with SLOW_MACHINE=1 (given that's how Travis tests):
Time before (non-valgrind):
393 sec (had 3 failures?)
Time after (non-valgrind):
410 sec
Time before (valgrind):
890 seconds (had 2 failures)
Time after (valgrind):
892 sec
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
While we were unsetting the `payment->cmd` in case of a success to signal that
we should not return to the JSON-RPC command twice, we were not doing that in
the case of failures. This was causing multiple responses to a single incoming
command, and `lightningd` was correctly killing the plugin. This issue was
introduced through early returns (anything setting `payment->abort=true`) and
was caused in Rusty's case through an MPP timeout.
Fixes#3847
Reported-by: Rusty Russell <@rustyrussell>
Signed-off-by: Christian Decker <@cdecker>
These are pulled from wallet/wallet.c, with the fix now that we grind sigs.
This reduces the fees we pay slightly, as you can see in the coinmoves changes.
I now print out all the coin moves in suitable format before we match:
you only see this if the test fails, but it's really helpful.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
There is a race between `getroute` learning that our peer accepts TLVs and us
initiating the payment. Waiting for announcements ensures we always use TLVs,
matching our expectation in the test / plugin.
There are various places where our tests failed with
--enable-expimental-features. And our plugin test overlapped an
existing feature.
We make our expected_feature functions more generic, and use them
everywhere.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
