routing: limit max parts if the invoice doesn't declare MPP support

2021-01-15 14:56:32 -03:00 · 2021-01-15 14:56:32 -03:00 · f574c150aa
commit f574c150aa
parent fdd24fc1d6
1 changed files with 6 additions and 0 deletions
--- a/routing/payment_session.go
+++ b/routing/payment_session.go
@ -278,6 +278,12 @@ func (p *paymentSession) RequestRoute(maxAmt, feeLimit lnwire.MilliSatoshi,
 				return nil, errNoPathFound
 			}

+			if !p.payment.DestFeatures.HasFeature(lnwire.MPPOptional) {
+				p.log.Debug("not splitting because destination doesn't declare MPP")
+
+				return nil, errNoPathFound
+			}
+
 			// No splitting if this is the last shard.
 			isLastShard := activeShards+1 >= p.payment.MaxParts
 			if isLastShard {