cmd, node: support different bootnodes, fix default light port

cmd/geth/main.go

@@ -55,6 +55,8 @@ var (
 		utils.UnlockedAccountFlag,
 		utils.PasswordFileFlag,
 		utils.BootnodesFlag,
+		utils.BootnodesV4Flag,
+		utils.BootnodesV5Flag,
 		utils.DataDirFlag,
 		utils.KeyStoreDirFlag,
 		utils.NoUSBFlag,

cmd/geth/usage.go

@@ -129,6 +129,8 @@ var AppHelpFlagGroups = []flagGroup{
 		Name: "NETWORKING",
 		Flags: []cli.Flag{
 			utils.BootnodesFlag,
+			utils.BootnodesV4Flag,
+			utils.BootnodesV5Flag,
 			utils.ListenPortFlag,
 			utils.MaxPeersFlag,
 			utils.MaxPendingPeersFlag,

cmd/utils/flags.go

@@ -360,7 +360,17 @@ var (
 	}
 	BootnodesFlag = cli.StringFlag{
 		Name:  "bootnodes",
-		Usage: "Comma separated enode URLs for P2P discovery bootstrap",
+		Usage: "Comma separated enode URLs for P2P discovery bootstrap (set v4+v5 instead for light servers)",
+		Value: "",
+	}
+	BootnodesV4Flag = cli.StringFlag{
+		Name:  "bootnodesv4",
+		Usage: "Comma separated enode URLs for P2P v4 discovery bootstrap (light server, full nodes)",
+		Value: "",
+	}
+	BootnodesV5Flag = cli.StringFlag{
+		Name:  "bootnodesv5",
+		Usage: "Comma separated enode URLs for P2P v5 discovery bootstrap (light server, light nodes)",
 		Value: "",
 	}
 	NodeKeyFileFlag = cli.StringFlag{
@@ -469,8 +479,12 @@ func setNodeUserIdent(ctx *cli.Context, cfg *node.Config) {
 func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {
 	urls := params.MainnetBootnodes
 	switch {
-	case ctx.GlobalIsSet(BootnodesFlag.Name):
+	case ctx.GlobalIsSet(BootnodesFlag.Name) || ctx.GlobalIsSet(BootnodesV4Flag.Name):
+		if ctx.GlobalIsSet(BootnodesV4Flag.Name) {
+			urls = strings.Split(ctx.GlobalString(BootnodesV4Flag.Name), ",")
+		} else {
 			urls = strings.Split(ctx.GlobalString(BootnodesFlag.Name), ",")
+		}
 	case ctx.GlobalBool(TestnetFlag.Name):
 		urls = params.TestnetBootnodes
 	case ctx.GlobalBool(RinkebyFlag.Name):
@@ -493,8 +507,12 @@ func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {
 func setBootstrapNodesV5(ctx *cli.Context, cfg *p2p.Config) {
 	urls := params.DiscoveryV5Bootnodes
 	switch {
-	case ctx.GlobalIsSet(BootnodesFlag.Name):
+	case ctx.GlobalIsSet(BootnodesFlag.Name) || ctx.GlobalIsSet(BootnodesV5Flag.Name):
+		if ctx.GlobalIsSet(BootnodesV5Flag.Name) {
+			urls = strings.Split(ctx.GlobalString(BootnodesV5Flag.Name), ",")
+		} else {
 			urls = strings.Split(ctx.GlobalString(BootnodesFlag.Name), ",")
+		}
 	case ctx.GlobalBool(RinkebyFlag.Name):
 		urls = params.RinkebyV5Bootnodes
 	case cfg.BootstrapNodesV5 != nil:
@@ -717,6 +735,7 @@ func SetP2PConfig(ctx *cli.Context, cfg *p2p.Config) {
 		// --dev mode can't use p2p networking.
 		cfg.MaxPeers = 0
 		cfg.ListenAddr = ":0"
+		cfg.DiscoveryV5Addr = ":0"
 		cfg.NoDiscovery = true
 		cfg.DiscoveryV5 = false
 	}

node/defaults.go

@@ -42,6 +42,7 @@ var DefaultConfig = Config{
 	WSModules:   []string{"net", "web3"},
 	P2P: p2p.Config{
 		ListenAddr:      ":30303",
+		DiscoveryV5Addr: ":30304",
 		MaxPeers:        25,
 		NAT:             nat.Any(),
 	},