Commit Graph

11 Commits

Author SHA1 Message Date
Joost Jager
ecd3c59f7a
cnct: do not log resolver shutting down as error 2019-09-11 15:54:41 +02:00
Joost Jager
05e6b62cb2
cnct+htlcswitch+invoices: report circuit key to invoice registry
Currently the invoice registry cannot tell apart the htlcs that pay to
an invoice. Because htlcs may also be replayed on startup, it isn't
possible to determine the total amount paid to an invoice.

This commit is a first step towards fixing that. It reports the circuit
keys of htlcs to the invoice registry, which forms the basis for
accurate invoice accounting.
2019-09-04 19:20:13 +02:00
Olaoluwa Osuntokun
23cc8389f2
multi: add TLV awareness to htlcswitch, pass extra EOB to the invoice registry
In this commit, we update the `HopIterator` to gain awareness of the new
TLV hop payload. The default `HopIterator` will now hide the details of
the TLV from the caller, and return the same `ForwardingInfo` struct in
a uniform manner. We also add a new method: `ExtraOnionBlob` to allow
the caller to obtain the raw EOB (the serialized TLV stream) to pass
around.

Within the link, we'll now pass the EOB information into the invoice
registry. This allows the registry to parse out any additional
information from the EOB that it needs to settle the payment, such as a
preimage shard in the AMP case.
2019-08-22 18:53:05 -07:00
Joost Jager
064e8492de
cnct+htlcswitch+invoices: move invoice parameter check out of link
This commit is the final step in making the link unaware of invoices. It
now purely offers the htlc to the invoice registry and follows
instructions from the invoice registry about how and when to respond to
the htlc.

The change also fixes a bug where upon restart, hodl htlcs were
subjected to the invoice minimum cltv delta requirement again. If the
block height has increased in the mean while, the htlc would be canceled
back.

Furthermore the invoice registry interaction is aligned between link and
contract resolvers.
2019-05-15 14:42:12 +02:00
Joost Jager
99e42ddde6
cnct: be stricter about matching preimages
The former tryApplyPreimage function silently ignored invalid preimages.
This could mask potential bugs. This commit makes the logic stricter and
generates an error in case an unexpected mismatch occurs.
2019-05-15 14:41:55 +02:00
Joost Jager
ec6a35d6e8
cnct: do not depend on ChainIO in incoming contest resolver
New behaviour of the chain notifier to always send the current block
immediately after registration takes away the need to make a separate
GetBestBlock call on ChainIO.
2019-05-15 14:41:52 +02:00
Joost Jager
6886a0117f
cnct: always create incoming contest resolver
One of the first things the incoming contest resolver does is checking
if the preimage is available and if it is, convert itself into a success
resolver.

This behaviour makes it unnecessary to already determine earlier in the
process whether an incoming contest or a success resolver is needed.

By having all incoming htlcs go through the incoming contest resolver,
the number of execution paths is reduced and it becomes easier to
ascertain that the implemented logic is correct.

The only functional change in this commit is that a forwarded htlc for
which is the preimage is known, is no longer settled when the htlc is
already expired. Previously a success resolver would be instantiated
directly, skipping the expiry height check.

This created a risk that the success resolver would never finish,
because an expired htlc could already have been swept by the remote
party and there is no detection of this remote spend in the success
resolver currently.

With the new change, the general direction that an expired htlc
shouldn't be settled and instead given up on is implemented more
consistently.

This commit prepares for fixing edges cases related to hodl
invoice on-chain resolution.
2019-05-15 14:41:47 +02:00
Joost Jager
32f2b047e8
htlcswitch: hodl invoice
This commit modifies the invoice registry to handle invoices for which
the preimage is not known yet (hodl invoices). In that case, the
resolution channel passed in from links and resolvers is stored until we
either learn the preimage or want to cancel the htlc.
2019-03-15 10:09:17 +01:00
Conner Fromknecht
29f07a58cb
cnct+lnwl+hswc: use lntypes.Preimage for witness beacon 2019-02-19 17:06:00 -08:00
Joost Jager
55aee9c703
cnct: expose non-incubating htlcs after channel force close
In this commit we fix a reporting gap that previously existed for htlcs
that were still contested.
2019-02-01 09:36:47 +01:00
Joost Jager
4ec3fc3b1a
cnct: split resolvers in separate files 2019-01-16 20:03:59 +01:00