zpay32: move HopHint and DefaultFinalCLTVDelta

zpay32/hophint.go

@@ -0,0 +1,31 @@
+package zpay32
+
+import "github.com/btcsuite/btcd/btcec"
+
+const (
+	// DefaultFinalCLTVDelta is the default value to be used as the final
+	// CLTV delta for a route if one is unspecified.
+	DefaultFinalCLTVDelta = 9
+)
+
+// HopHint is a routing hint that contains the minimum information of a channel
+// required for an intermediate hop in a route to forward the payment to the
+// next. This should be ideally used for private channels, since they are not
+// publicly advertised to the network for routing.
+type HopHint struct {
+	// NodeID is the public key of the node at the start of the channel.
+	NodeID *btcec.PublicKey
+
+	// ChannelID is the unique identifier of the channel.
+	ChannelID uint64
+
+	// FeeBaseMSat is the base fee of the channel in millisatoshis.
+	FeeBaseMSat uint32
+
+	// FeeProportionalMillionths is the fee rate, in millionths of a
+	// satoshi, for every satoshi sent through the channel.
+	FeeProportionalMillionths uint32
+
+	// CLTVExpiryDelta is the time-lock delta of the channel.
+	CLTVExpiryDelta uint16
+}