Allow outgoing splice request while disconnected #4122
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #4122 +/- ##
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+ Coverage 88.72% 88.75% +0.03%
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Files 180 180
Lines 135528 135891 +363
Branches 135528 135891 +363
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+ Hits 120241 120615 +374
+ Misses 12517 12505 -12
- Partials 2770 2771 +1
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Splices negotiated with 0 confirmations require that we immediately lock it after exchanging `tx_signatures`.
This is crucial for peers that serve liquidity for low-availability (i.e., mobile) nodes. We should allow users to queue a splice request while the peer is offline, such that it is negotiated once reconnected. Note that there currently isn't a way to time out/cancel these requests, this is planned for the near future.
Since we don't yet support contributing to an incoming splice, we need to make sure we attempt our splice negotiation eventually if the counterparty was also attempting a splice at the same time but they won the quiescence tie-breaker. Since only one pending splice (without RBF) is allowed at a time, we do this after the existing splice becomes locked.
We'll use this in the next commit to test that we'll send a stfu message for a splice we intend to initiate upon reconnecting.
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This is crucial for peers that serve liquidity for low-availability (i.e., mobile) nodes. We should allow users to queue a splice request while the peer is offline, such that it is negotiated once reconnected. Note that there currently isn't a way to time out/cancel these requests, this is planned for the near future.
The test added also includes coverage for 0-conf splices, which didn't work because they lacked test coverage to begin with.
Depends on #4079.
Fixes #1621 (comment).