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routing: bugfix for mc reporting of blinded paths

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When reporting an error  or a success case of a payment to a
blinded paths, the amounts to forward for intermediate hops
are set to 0 so we need to use the receiver amount instead.
This commit is contained in:
ziggie
2024-12-09 22:18:27 +01:00
parent 9327940ac4
commit decfdb68ac
2 changed files with 123 additions and 19 deletions
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63
routing/result_interpretation_test.go
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@@ -96,13 +96,17 @@ var (
AmtToForward: 99,
},
{
PubKeyBytes: hops[2],
AmtToForward: 95,
PubKeyBytes: hops[2],
// Intermediate blinded hops don't have an
// amount set.
AmtToForward: 0,
BlindingPoint: genTestPubKey(),
},
{
PubKeyBytes: hops[3],
AmtToForward: 88,
PubKeyBytes: hops[3],
// Intermediate blinded hops don't have an
// amount set.
AmtToForward: 0,
},
{
PubKeyBytes: hops[4],
@@ -122,8 +126,10 @@ var (
AmtToForward: 99,
},
{
PubKeyBytes: hops[2],
AmtToForward: 95,
PubKeyBytes: hops[2],
// Intermediate blinded hops don't have an
// amount set.
AmtToForward: 0,
BlindingPoint: genTestPubKey(),
},
{
@@ -140,13 +146,17 @@ var (
TotalAmount: 100,
Hops: []*route.Hop{
{
PubKeyBytes: hops[1],
AmtToForward: 90,
PubKeyBytes: hops[1],
// Intermediate blinded hops don't have an
// amount set.
AmtToForward: 0,
BlindingPoint: genTestPubKey(),
},
{
PubKeyBytes: hops[2],
AmtToForward: 75,
PubKeyBytes: hops[2],
// Intermediate blinded hops don't have an
// amount set.
AmtToForward: 0,
},
{
PubKeyBytes: hops[3],
@@ -552,7 +562,12 @@ var resultTestCases = []resultTestCase{
pairResults: map[DirectedNodePair]pairResult{
getTestPair(0, 1): successPairResult(100),
getTestPair(1, 2): successPairResult(99),
getTestPair(3, 4): failPairResult(88),
// The amount for the last hop is always the
// receiver amount because the amount to forward
// is always set to 0 for intermediate blinded
// hops.
getTestPair(3, 4): failPairResult(77),
},
},
},
@@ -567,7 +582,12 @@ var resultTestCases = []resultTestCase{
expectedResult: &interpretedResult{
pairResults: map[DirectedNodePair]pairResult{
getTestPair(0, 1): successPairResult(100),
getTestPair(2, 3): failPairResult(75),
// The amount for the last hop is always the
// receiver amount because the amount to forward
// is always set to 0 for intermediate blinded
// hops.
getTestPair(2, 3): failPairResult(58),
},
},
},
@@ -682,6 +702,25 @@ var resultTestCases = []resultTestCase{
finalFailureReason: &reasonError,
},
},
// Test a multi-hop blinded route and that in a success case the amounts
// for the blinded route part are correctly set to the receiver amount.
{
name: "blinded multi-hop success",
route: blindedMultiToIntroduction,
success: true,
expectedResult: &interpretedResult{
pairResults: map[DirectedNodePair]pairResult{
getTestPair(0, 1): successPairResult(100),
// For the route blinded part of the route the
// success amount is determined by the receiver
// amount because the intermediate blinded hops
// set the forwarded amount to 0.
getTestPair(1, 2): successPairResult(58),
getTestPair(2, 3): successPairResult(58),
},
},
},
}
// TestResultInterpretation executes a list of test cases that test the result