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lnwire: allow longer failure messages

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This fixes an incompatibility where lnd enforces a strict 256 byte
failure message, where as the spec sets this only as the recommended
length.
This commit is contained in:
Joost Jager
2022-09-13 16:13:46 +02:00
parent 5ff5838d74
commit 4c8ea29336
8 changed files with 111 additions and 8 deletions
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6
lnwire/onion_error.go
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@@ -1264,9 +1264,9 @@ func DecodeFailure(r io.Reader, pver uint32) (FailureMessage, error) {
// Check the total length. Convert to 32 bits to prevent overflow.
totalLength := uint32(padLength) + uint32(failureLength)
if totalLength != FailureMessageLength {
return nil, fmt.Errorf("failure message length is "+
"incorrect: msg=%v, pad=%v, total=%v",
if totalLength < FailureMessageLength {
return nil, fmt.Errorf("failure message too short: "+
"msg=%v, pad=%v, total=%v",
failureLength, padLength, totalLength)
}