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routing: let BlindedPaymentPathSet handle FinalCLTV logic

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Instead of needing to remember how to handle the FinalCLTV value of a
blinded payment path at various points in the code base, we hide the
logic behind a unified FinalCLTVDelta method on the blinded path.
This commit is contained in:
Elle Mouton
2024-05-15 15:59:43 +02:00
parent 8df03de3e9
commit daaa24b69c
3 changed files with 42 additions and 29 deletions
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12
routing/router.go
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@@ -524,17 +524,7 @@ func NewRouteRequest(source route.Vertex, target *route.Vertex,
return nil, ErrExpiryAndBlinded
}
// If we have a blinded path with 1 hop, the cltv expiry
// will not be included in any hop hints (since we're just
// sending to the introduction node and need no blinded hints).
// In this case, we include it to make sure that the final
// cltv delta is accounted for (since it's part of the blinded
// delta). In the case of a multi-hop route, we set our final
// cltv to zero, since it's going to be accounted for in the
// delta for our hints.
if len(blindedPayment.BlindedPath.BlindedHops) == 1 {
requestExpiry = blindedPayment.CltvExpiryDelta
}
requestExpiry = blindedPathSet.FinalCLTVDelta()
requestHints, err = blindedPathSet.ToRouteHints()
if err != nil {