From 6fd5ef88b6f57a14e111406bfec59348e52475f1 Mon Sep 17 00:00:00 2001
From: Danny Paz <dannypaz@Dannys-MacBook-Pro.local>
Date: Thu, 29 Nov 2018 13:53:01 -0800
Subject: [PATCH] add litecoin regtest configuration to lnd

regtest change to chainregistry for default port number

merge w/ master
---
 chainparams.go   | 13 +++++++++++--
 chainregistry.go | 11 ++++++++---
 config.go        | 17 ++++++++++-------
 lnd.go           |  2 +-
 4 files changed, 30 insertions(+), 13 deletions(-)

diff --git a/chainparams.go b/chainparams.go
index 8313c6cf..a119fea8 100644
--- a/chainparams.go
+++ b/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,
diff --git a/chainregistry.go b/chainregistry.go
index e50e9c69..adbc906d 100644
--- a/chainregistry.go
+++ b/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 {
-					rpcPort = 18443
+					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
diff --git a/config.go b/config.go
index 63f475b0..6e83a888 100644
--- a/config.go
+++ b/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++
diff --git a/lnd.go b/lnd.go
index 41d6a49e..59b8d6c7 100644
--- a/lnd.go
+++ b/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"
 	}