add litecoin regtest configuration to lnd

regtest change to chainregistry for default port number

merge w/ master

chainparams.go

@@ -78,8 +78,17 @@ var litecoinMainNetParams = litecoinNetParams{
 	CoinType: keychain.CoinTypeLitecoin,
 }
 
-// regTestNetParams contains parameters specific to a local regtest network.
-var regTestNetParams = bitcoinNetParams{
+// litecoinRegTestNetParams contains parameters specific to a local litecoin
+// regtest network.
+var litecoinRegTestNetParams = litecoinNetParams{
+	Params:   &litecoinCfg.RegressionNetParams,
+	rpcPort:  "18334",
+	CoinType: keychain.CoinTypeTestnet,
+}
+
+// bitcoinRegTestNetParams contains parameters specific to a local bitcoin
+// regtest network.
+var bitcoinRegTestNetParams = bitcoinNetParams{
 	Params:   &bitcoinCfg.RegressionNetParams,
 	rpcPort:  "18334",
 	CoinType: keychain.CoinTypeTestnet,

chainregistry.go

@@ -256,10 +256,15 @@ func newChainControlFromConfig(cfg *config, chanDB *channeldb.DB,
 			rpcPort -= 2
 			bitcoindHost = fmt.Sprintf("%v:%d",
 				bitcoindMode.RPCHost, rpcPort)
-			if cfg.Bitcoin.Active && cfg.Bitcoin.RegTest {
+			if (cfg.Bitcoin.Active && cfg.Bitcoin.RegTest) ||
+				(cfg.Litecoin.Active && cfg.Litecoin.RegTest) {
 				conn, err := net.Dial("tcp", bitcoindHost)
 				if err != nil || conn == nil {
+					if cfg.Bitcoin.Active && cfg.Bitcoin.RegTest {
 						rpcPort = 18443
+					} else if cfg.Litecoin.Active && cfg.Litecoin.RegTest {
+						rpcPort = 19443
+					}
 					bitcoindHost = fmt.Sprintf("%v:%d",
 						bitcoindMode.RPCHost,
 						rpcPort)
@@ -320,7 +325,7 @@ func newChainControlFromConfig(cfg *config, chanDB *channeldb.DB,
 			if err := cc.feeEstimator.Start(); err != nil {
 				return nil, err
 			}
-		} else if cfg.Litecoin.Active {
+		} else if cfg.Litecoin.Active && !cfg.Litecoin.RegTest {
 			ltndLog.Infof("Initializing litecoind backed fee estimator")
 
 			// Finally, we'll re-initialize the fee estimator, as

config.go

@@ -591,16 +591,10 @@ func loadConfig() (*config, error) {
 			"litecoin.active must be set to 1 (true)", funcName)
 
 	case cfg.Litecoin.Active:
-		if cfg.Litecoin.RegTest {
-			str := "%s: regnet mode for litecoin not currently supported"
-			return nil, fmt.Errorf(str, funcName)
-		}
-
 		if cfg.Litecoin.TimeLockDelta < minTimeLockDelta {
 			return nil, fmt.Errorf("timelockdelta must be at least %v",
 				minTimeLockDelta)
 		}
-
 		// Multiple networks can't be selected simultaneously.  Count
 		// number of network flags passed; assign active network params
 		// while we're at it.
@@ -618,6 +612,15 @@ func loadConfig() (*config, error) {
 			numNets++
 			ltcParams = litecoinSimNetParams
 		}
+		if cfg.Litecoin.RegTest {
+			numNets++
+			ltcParams = litecoinRegTestNetParams
+		}
+		if cfg.Litecoin.SimNet {
+			numNets++
+			ltcParams = litecoinSimNetParams
+		}
+
 		if numNets > 1 {
 			str := "%s: The mainnet, testnet, and simnet params " +
 				"can't be used together -- choose one of the " +
@@ -700,7 +703,7 @@ func loadConfig() (*config, error) {
 		}
 		if cfg.Bitcoin.RegTest {
 			numNets++
-			activeNetParams = regTestNetParams
+			activeNetParams = bitcoinRegTestNetParams
 		}
 		if cfg.Bitcoin.SimNet {
 			numNets++

lnd.go

@@ -123,7 +123,7 @@ func Main() error {
 	case cfg.Bitcoin.SimNet || cfg.Litecoin.SimNet:
 		network = "simnet"
 
-	case cfg.Bitcoin.RegTest:
+	case cfg.Bitcoin.RegTest || cfg.Litecoin.RegTest:
 		network = "regtest"
 	}