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routing: use converted hop payloads for sphinx packet when creating onion

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This commit is contained in:
Olaoluwa Osuntokun 2017-06-16 22:42:55 +02:00
parent 4d8bb21d9d
commit fca51d6165
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1 changed files with 5 additions and 11 deletions
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16
routing/router.go
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@ -848,8 +848,6 @@ func (r *ChannelRouter) FindRoutes(target *btcec.PublicKey, amt btcutil.Amount)
// the onion route specified by the passed layer 3 route. The blob returned
// from this function can immediately be included within an HTLC add packet to
// be sent to the first hop within the route.
//
// TODO(roasbeef): add params for the per-hop payloads
func generateSphinxPacket(route *Route, paymentHash []byte) ([]byte, error) {
// First obtain all the public keys along the route which are contained
// in each hop.
@ -869,14 +867,10 @@ func generateSphinxPacket(route *Route, paymentHash []byte) ([]byte, error) {
// Next we generate the per-hop payload which gives each node within
// the route the necessary information (fees, CLTV value, etc) to
// properly forward the payment.
// TODO(roasbeef): properly set CLTV value, payment amount, and chain
// within hop payloads.
var hopPayloads [][]byte
for i := 0; i < len(route.Hops); i++ {
payload := bytes.Repeat([]byte{byte('A' + i)},
sphinx.HopPayloadSize)
hopPayloads = append(hopPayloads, payload)
}
hopPayloads := route.ToHopPayloads()
log.Tracef("Constructed per-hop payloads for payment_hash=%x: %v",
paymentHash[:], spew.Sdump(hopPayloads))
sessionKey, err := btcec.NewPrivateKey(btcec.S256())
if err != nil {
@ -902,7 +896,7 @@ func generateSphinxPacket(route *Route, paymentHash []byte) ([]byte, error) {
newLogClosure(func() string {
// We unset the internal curve here in order to keep
// the logs from getting noisy.
sphinxPacket.Header.EphemeralKey.Curve = nil
sphinxPacket.EphemeralKey.Curve = nil
return spew.Sdump(sphinxPacket)
}),
)