add an option to call geth entry; add vendor

20 files changed, 5800 insertions, 4 deletions

diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go
new file mode 100644
index 0000000..4b175b6
--- /dev/null
+++ b/cmd/geth/chaincmd.go
@@ -0,0 +1,559 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package geth
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"sync/atomic"
+	"time"
+
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/console"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/trie"
+	"gopkg.in/urfave/cli.v1"
+)
+
+var (
+	initCommand = cli.Command{
+		Action:    utils.MigrateFlags(initGenesis),
+		Name:      "init",
+		Usage:     "Bootstrap and initialize a new genesis block",
+		ArgsUsage: "<genesisPath>",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+The init command initializes a new genesis block and definition for the network.
+This is a destructive action and changes the network in which you will be
+participating.
+
+It expects the genesis file as argument.`,
+	}
+	importCommand = cli.Command{
+		Action:    utils.MigrateFlags(importChain),
+		Name:      "import",
+		Usage:     "Import a blockchain file",
+		ArgsUsage: "<filename> (<filename 2> ... <filename N>) ",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.CacheFlag,
+			utils.SyncModeFlag,
+			utils.GCModeFlag,
+			utils.CacheDatabaseFlag,
+			utils.CacheGCFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+The import command imports blocks from an RLP-encoded form. The form can be one file
+with several RLP-encoded blocks, or several files can be used.
+
+If only one file is used, import error will result in failure. If several files are used,
+processing will proceed even if an individual RLP-file import failure occurs.`,
+	}
+	exportCommand = cli.Command{
+		Action:    utils.MigrateFlags(exportChain),
+		Name:      "export",
+		Usage:     "Export blockchain into file",
+		ArgsUsage: "<filename> [<blockNumFirst> <blockNumLast>]",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.CacheFlag,
+			utils.SyncModeFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+Requires a first argument of the file to write to.
+Optional second and third arguments control the first and
+last block to write. In this mode, the file will be appended
+if already existing. If the file ends with .gz, the output will
+be gzipped.`,
+	}
+	importPreimagesCommand = cli.Command{
+		Action:    utils.MigrateFlags(importPreimages),
+		Name:      "import-preimages",
+		Usage:     "Import the preimage database from an RLP stream",
+		ArgsUsage: "<datafile>",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.CacheFlag,
+			utils.SyncModeFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+	The import-preimages command imports hash preimages from an RLP encoded stream.`,
+	}
+	exportPreimagesCommand = cli.Command{
+		Action:    utils.MigrateFlags(exportPreimages),
+		Name:      "export-preimages",
+		Usage:     "Export the preimage database into an RLP stream",
+		ArgsUsage: "<dumpfile>",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.CacheFlag,
+			utils.SyncModeFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+The export-preimages command export hash preimages to an RLP encoded stream`,
+	}
+	copydbCommand = cli.Command{
+		Action:    utils.MigrateFlags(copyDb),
+		Name:      "copydb",
+		Usage:     "Create a local chain from a target chaindata folder",
+		ArgsUsage: "<sourceChaindataDir>",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.CacheFlag,
+			utils.SyncModeFlag,
+			utils.FakePoWFlag,
+			utils.TestnetFlag,
+			utils.RinkebyFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+The first argument must be the directory containing the blockchain to download from`,
+	}
+	removedbCommand = cli.Command{
+		Action:    utils.MigrateFlags(removeDB),
+		Name:      "removedb",
+		Usage:     "Remove blockchain and state databases",
+		ArgsUsage: " ",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+Remove blockchain and state databases`,
+	}
+	dumpCommand = cli.Command{
+		Action:    utils.MigrateFlags(dump),
+		Name:      "dump",
+		Usage:     "Dump a specific block from storage",
+		ArgsUsage: "[<blockHash> | <blockNum>]...",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.CacheFlag,
+			utils.SyncModeFlag,
+			utils.IterativeOutputFlag,
+			utils.ExcludeCodeFlag,
+			utils.ExcludeStorageFlag,
+			utils.IncludeIncompletesFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+		Description: `
+The arguments are interpreted as block numbers or hashes.
+Use "ethereum dump 0" to dump the genesis block.`,
+	}
+	inspectCommand = cli.Command{
+		Action:    utils.MigrateFlags(inspect),
+		Name:      "inspect",
+		Usage:     "Inspect the storage size for each type of data in the database",
+		ArgsUsage: " ",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+			utils.AncientFlag,
+			utils.CacheFlag,
+			utils.TestnetFlag,
+			utils.RinkebyFlag,
+			utils.GoerliFlag,
+			utils.SyncModeFlag,
+		},
+		Category: "BLOCKCHAIN COMMANDS",
+	}
+)
+
+// initGenesis will initialise the given JSON format genesis file and writes it as
+// the zero'd block (i.e. genesis) or will fail hard if it can't succeed.
+func initGenesis(ctx *cli.Context) error {
+	// Make sure we have a valid genesis JSON
+	genesisPath := ctx.Args().First()
+	if len(genesisPath) == 0 {
+		utils.Fatalf("Must supply path to genesis JSON file")
+	}
+	file, err := os.Open(genesisPath)
+	if err != nil {
+		utils.Fatalf("Failed to read genesis file: %v", err)
+	}
+	defer file.Close()
+
+	genesis := new(core.Genesis)
+	if err := json.NewDecoder(file).Decode(genesis); err != nil {
+		utils.Fatalf("invalid genesis file: %v", err)
+	}
+	// Open an initialise both full and light databases
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	for _, name := range []string{"chaindata", "lightchaindata"} {
+		chaindb, err := stack.OpenDatabase(name, 0, 0, "")
+		if err != nil {
+			utils.Fatalf("Failed to open database: %v", err)
+		}
+		_, hash, err := core.SetupGenesisBlock(chaindb, genesis)
+		if err != nil {
+			utils.Fatalf("Failed to write genesis block: %v", err)
+		}
+		chaindb.Close()
+		log.Info("Successfully wrote genesis state", "database", name, "hash", hash)
+	}
+	return nil
+}
+
+func importChain(ctx *cli.Context) error {
+	if len(ctx.Args()) < 1 {
+		utils.Fatalf("This command requires an argument.")
+	}
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	chain, db := utils.MakeChain(ctx, stack)
+	defer db.Close()
+
+	// Start periodically gathering memory profiles
+	var peakMemAlloc, peakMemSys uint64
+	go func() {
+		stats := new(runtime.MemStats)
+		for {
+			runtime.ReadMemStats(stats)
+			if atomic.LoadUint64(&peakMemAlloc) < stats.Alloc {
+				atomic.StoreUint64(&peakMemAlloc, stats.Alloc)
+			}
+			if atomic.LoadUint64(&peakMemSys) < stats.Sys {
+				atomic.StoreUint64(&peakMemSys, stats.Sys)
+			}
+			time.Sleep(5 * time.Second)
+		}
+	}()
+	// Import the chain
+	start := time.Now()
+
+	if len(ctx.Args()) == 1 {
+		if err := utils.ImportChain(chain, ctx.Args().First()); err != nil {
+			log.Error("Import error", "err", err)
+		}
+	} else {
+		for _, arg := range ctx.Args() {
+			if err := utils.ImportChain(chain, arg); err != nil {
+				log.Error("Import error", "file", arg, "err", err)
+			}
+		}
+	}
+	chain.Stop()
+	fmt.Printf("Import done in %v.\n\n", time.Since(start))
+
+	// Output pre-compaction stats mostly to see the import trashing
+	stats, err := db.Stat("leveldb.stats")
+	if err != nil {
+		utils.Fatalf("Failed to read database stats: %v", err)
+	}
+	fmt.Println(stats)
+
+	ioStats, err := db.Stat("leveldb.iostats")
+	if err != nil {
+		utils.Fatalf("Failed to read database iostats: %v", err)
+	}
+	fmt.Println(ioStats)
+
+	// Print the memory statistics used by the importing
+	mem := new(runtime.MemStats)
+	runtime.ReadMemStats(mem)
+
+	fmt.Printf("Object memory: %.3f MB current, %.3f MB peak\n", float64(mem.Alloc)/1024/1024, float64(atomic.LoadUint64(&peakMemAlloc))/1024/1024)
+	fmt.Printf("System memory: %.3f MB current, %.3f MB peak\n", float64(mem.Sys)/1024/1024, float64(atomic.LoadUint64(&peakMemSys))/1024/1024)
+	fmt.Printf("Allocations:   %.3f million\n", float64(mem.Mallocs)/1000000)
+	fmt.Printf("GC pause:      %v\n\n", time.Duration(mem.PauseTotalNs))
+
+	if ctx.GlobalBool(utils.NoCompactionFlag.Name) {
+		return nil
+	}
+
+	// Compact the entire database to more accurately measure disk io and print the stats
+	start = time.Now()
+	fmt.Println("Compacting entire database...")
+	if err = db.Compact(nil, nil); err != nil {
+		utils.Fatalf("Compaction failed: %v", err)
+	}
+	fmt.Printf("Compaction done in %v.\n\n", time.Since(start))
+
+	stats, err = db.Stat("leveldb.stats")
+	if err != nil {
+		utils.Fatalf("Failed to read database stats: %v", err)
+	}
+	fmt.Println(stats)
+
+	ioStats, err = db.Stat("leveldb.iostats")
+	if err != nil {
+		utils.Fatalf("Failed to read database iostats: %v", err)
+	}
+	fmt.Println(ioStats)
+	return nil
+}
+
+func exportChain(ctx *cli.Context) error {
+	if len(ctx.Args()) < 1 {
+		utils.Fatalf("This command requires an argument.")
+	}
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	chain, _ := utils.MakeChain(ctx, stack)
+	start := time.Now()
+
+	var err error
+	fp := ctx.Args().First()
+	if len(ctx.Args()) < 3 {
+		err = utils.ExportChain(chain, fp)
+	} else {
+		// This can be improved to allow for numbers larger than 9223372036854775807
+		first, ferr := strconv.ParseInt(ctx.Args().Get(1), 10, 64)
+		last, lerr := strconv.ParseInt(ctx.Args().Get(2), 10, 64)
+		if ferr != nil || lerr != nil {
+			utils.Fatalf("Export error in parsing parameters: block number not an integer\n")
+		}
+		if first < 0 || last < 0 {
+			utils.Fatalf("Export error: block number must be greater than 0\n")
+		}
+		err = utils.ExportAppendChain(chain, fp, uint64(first), uint64(last))
+	}
+
+	if err != nil {
+		utils.Fatalf("Export error: %v\n", err)
+	}
+	fmt.Printf("Export done in %v\n", time.Since(start))
+	return nil
+}
+
+// importPreimages imports preimage data from the specified file.
+func importPreimages(ctx *cli.Context) error {
+	if len(ctx.Args()) < 1 {
+		utils.Fatalf("This command requires an argument.")
+	}
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	db := utils.MakeChainDatabase(ctx, stack)
+	start := time.Now()
+
+	if err := utils.ImportPreimages(db, ctx.Args().First()); err != nil {
+		utils.Fatalf("Import error: %v\n", err)
+	}
+	fmt.Printf("Import done in %v\n", time.Since(start))
+	return nil
+}
+
+// exportPreimages dumps the preimage data to specified json file in streaming way.
+func exportPreimages(ctx *cli.Context) error {
+	if len(ctx.Args()) < 1 {
+		utils.Fatalf("This command requires an argument.")
+	}
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	db := utils.MakeChainDatabase(ctx, stack)
+	start := time.Now()
+
+	if err := utils.ExportPreimages(db, ctx.Args().First()); err != nil {
+		utils.Fatalf("Export error: %v\n", err)
+	}
+	fmt.Printf("Export done in %v\n", time.Since(start))
+	return nil
+}
+
+func copyDb(ctx *cli.Context) error {
+	// Ensure we have a source chain directory to copy
+	if len(ctx.Args()) < 1 {
+		utils.Fatalf("Source chaindata directory path argument missing")
+	}
+	if len(ctx.Args()) < 2 {
+		utils.Fatalf("Source ancient chain directory path argument missing")
+	}
+	// Initialize a new chain for the running node to sync into
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	chain, chainDb := utils.MakeChain(ctx, stack)
+	syncMode := *utils.GlobalTextMarshaler(ctx, utils.SyncModeFlag.Name).(*downloader.SyncMode)
+
+	var syncBloom *trie.SyncBloom
+	if syncMode == downloader.FastSync {
+		syncBloom = trie.NewSyncBloom(uint64(ctx.GlobalInt(utils.CacheFlag.Name)/2), chainDb)
+	}
+	dl := downloader.New(0, chainDb, syncBloom, new(event.TypeMux), chain, nil, nil)
+
+	// Create a source peer to satisfy downloader requests from
+	db, err := rawdb.NewLevelDBDatabaseWithFreezer(ctx.Args().First(), ctx.GlobalInt(utils.CacheFlag.Name)/2, 256, ctx.Args().Get(1), "")
+	if err != nil {
+		return err
+	}
+	hc, err := core.NewHeaderChain(db, chain.Config(), chain.Engine(), func() bool { return false })
+	if err != nil {
+		return err
+	}
+	peer := downloader.NewFakePeer("local", db, hc, dl)
+	if err = dl.RegisterPeer("local", 63, peer); err != nil {
+		return err
+	}
+	// Synchronise with the simulated peer
+	start := time.Now()
+
+	currentHeader := hc.CurrentHeader()
+	if err = dl.Synchronise("local", currentHeader.Hash(), hc.GetTd(currentHeader.Hash(), currentHeader.Number.Uint64()), syncMode); err != nil {
+		return err
+	}
+	for dl.Synchronising() {
+		time.Sleep(10 * time.Millisecond)
+	}
+	fmt.Printf("Database copy done in %v\n", time.Since(start))
+
+	// Compact the entire database to remove any sync overhead
+	start = time.Now()
+	fmt.Println("Compacting entire database...")
+	if err = db.Compact(nil, nil); err != nil {
+		utils.Fatalf("Compaction failed: %v", err)
+	}
+	fmt.Printf("Compaction done in %v.\n\n", time.Since(start))
+	return nil
+}
+
+func removeDB(ctx *cli.Context) error {
+	stack, config := makeConfigNode(ctx)
+
+	// Remove the full node state database
+	path := stack.ResolvePath("chaindata")
+	if common.FileExist(path) {
+		confirmAndRemoveDB(path, "full node state database")
+	} else {
+		log.Info("Full node state database missing", "path", path)
+	}
+	// Remove the full node ancient database
+	path = config.Eth.DatabaseFreezer
+	switch {
+	case path == "":
+		path = filepath.Join(stack.ResolvePath("chaindata"), "ancient")
+	case !filepath.IsAbs(path):
+		path = config.Node.ResolvePath(path)
+	}
+	if common.FileExist(path) {
+		confirmAndRemoveDB(path, "full node ancient database")
+	} else {
+		log.Info("Full node ancient database missing", "path", path)
+	}
+	// Remove the light node database
+	path = stack.ResolvePath("lightchaindata")
+	if common.FileExist(path) {
+		confirmAndRemoveDB(path, "light node database")
+	} else {
+		log.Info("Light node database missing", "path", path)
+	}
+	return nil
+}
+
+// confirmAndRemoveDB prompts the user for a last confirmation and removes the
+// folder if accepted.
+func confirmAndRemoveDB(database string, kind string) {
+	confirm, err := console.Stdin.PromptConfirm(fmt.Sprintf("Remove %s (%s)?", kind, database))
+	switch {
+	case err != nil:
+		utils.Fatalf("%v", err)
+	case !confirm:
+		log.Info("Database deletion skipped", "path", database)
+	default:
+		start := time.Now()
+		filepath.Walk(database, func(path string, info os.FileInfo, err error) error {
+			// If we're at the top level folder, recurse into
+			if path == database {
+				return nil
+			}
+			// Delete all the files, but not subfolders
+			if !info.IsDir() {
+				os.Remove(path)
+				return nil
+			}
+			return filepath.SkipDir
+		})
+		log.Info("Database successfully deleted", "path", database, "elapsed", common.PrettyDuration(time.Since(start)))
+	}
+}
+
+func dump(ctx *cli.Context) error {
+	stack := makeFullNode(ctx)
+	defer stack.Close()
+
+	chain, chainDb := utils.MakeChain(ctx, stack)
+	defer chainDb.Close()
+	for _, arg := range ctx.Args() {
+		var block *types.Block
+		if hashish(arg) {
+			block = chain.GetBlockByHash(common.HexToHash(arg))
+		} else {
+			num, _ := strconv.Atoi(arg)
+			block = chain.GetBlockByNumber(uint64(num))
+		}
+		if block == nil {
+			fmt.Println("{}")
+			utils.Fatalf("block not found")
+		} else {
+			state, err := state.New(block.Root(), state.NewDatabase(chainDb))
+			if err != nil {
+				utils.Fatalf("could not create new state: %v", err)
+			}
+			excludeCode := ctx.Bool(utils.ExcludeCodeFlag.Name)
+			excludeStorage := ctx.Bool(utils.ExcludeStorageFlag.Name)
+			includeMissing := ctx.Bool(utils.IncludeIncompletesFlag.Name)
+			if ctx.Bool(utils.IterativeOutputFlag.Name) {
+				state.IterativeDump(excludeCode, excludeStorage, !includeMissing, json.NewEncoder(os.Stdout))
+			} else {
+				if includeMissing {
+					fmt.Printf("If you want to include accounts with missing preimages, you need iterative output, since" +
+						" otherwise the accounts will overwrite each other in the resulting mapping.")
+				}
+				fmt.Printf("%v %s\n", includeMissing, state.Dump(excludeCode, excludeStorage, false))
+			}
+		}
+	}
+	return nil
+}
+
+func inspect(ctx *cli.Context) error {
+	node, _ := makeConfigNode(ctx)
+	defer node.Close()
+
+	_, chainDb := utils.MakeChain(ctx, node)
+	defer chainDb.Close()
+
+	return rawdb.InspectDatabase(chainDb)
+}
+
+// hashish returns true for strings that look like hashes.
+func hashish(x string) bool {
+	_, err := strconv.Atoi(x)
+	return err != nil
+}
diff --git a/cmd/geth/config.go b/cmd/geth/config.go
new file mode 100644
index 0000000..e33b367
--- /dev/null
+++ b/cmd/geth/config.go
@@ -0,0 +1,211 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package geth
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"os"
+	"reflect"
+	"unicode"
+
+	cli "gopkg.in/urfave/cli.v1"
+
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/ethereum/go-ethereum/dashboard"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/params"
+	whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
+	"github.com/naoina/toml"
+)
+
+var (
+	dumpConfigCommand = cli.Command{
+		Action:      utils.MigrateFlags(dumpConfig),
+		Name:        "dumpconfig",
+		Usage:       "Show configuration values",
+		ArgsUsage:   "",
+		Flags:       append(append(nodeFlags, rpcFlags...), whisperFlags...),
+		Category:    "MISCELLANEOUS COMMANDS",
+		Description: `The dumpconfig command shows configuration values.`,
+	}
+
+	configFileFlag = cli.StringFlag{
+		Name:  "config",
+		Usage: "TOML configuration file",
+	}
+)
+
+// These settings ensure that TOML keys use the same names as Go struct fields.
+var tomlSettings = toml.Config{
+	NormFieldName: func(rt reflect.Type, key string) string {
+		return key
+	},
+	FieldToKey: func(rt reflect.Type, field string) string {
+		return field
+	},
+	MissingField: func(rt reflect.Type, field string) error {
+		link := ""
+		if unicode.IsUpper(rune(rt.Name()[0])) && rt.PkgPath() != "main" {
+			link = fmt.Sprintf(", see https://godoc.org/%s#%s for available fields", rt.PkgPath(), rt.Name())
+		}
+		return fmt.Errorf("field '%s' is not defined in %s%s", field, rt.String(), link)
+	},
+}
+
+type ethstatsConfig struct {
+	URL string `toml:",omitempty"`
+}
+
+type gethConfig struct {
+	Eth       eth.Config
+	Shh       whisper.Config
+	Node      node.Config
+	Ethstats  ethstatsConfig
+	Dashboard dashboard.Config
+}
+
+func loadConfig(file string, cfg *gethConfig) error {
+	f, err := os.Open(file)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	err = tomlSettings.NewDecoder(bufio.NewReader(f)).Decode(cfg)
+	// Add file name to errors that have a line number.
+	if _, ok := err.(*toml.LineError); ok {
+		err = errors.New(file + ", " + err.Error())
+	}
+	return err
+}
+
+func defaultNodeConfig() node.Config {
+	cfg := node.DefaultConfig
+	cfg.Name = clientIdentifier
+	cfg.Version = params.VersionWithCommit(gitCommit, gitDate)
+	cfg.HTTPModules = append(cfg.HTTPModules, "eth", "shh")
+	cfg.WSModules = append(cfg.WSModules, "eth", "shh")
+	cfg.IPCPath = "geth.ipc"
+	return cfg
+}
+
+func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
+	// Load defaults.
+	cfg := gethConfig{
+		Eth:       eth.DefaultConfig,
+		Shh:       whisper.DefaultConfig,
+		Node:      defaultNodeConfig(),
+		Dashboard: dashboard.DefaultConfig,
+	}
+
+	// Load config file.
+	if file := ctx.GlobalString(configFileFlag.Name); file != "" {
+		if err := loadConfig(file, &cfg); err != nil {
+			utils.Fatalf("%v", err)
+		}
+	}
+
+	// Apply flags.
+	utils.SetNodeConfig(ctx, &cfg.Node)
+	stack, err := node.New(&cfg.Node)
+	if err != nil {
+		utils.Fatalf("Failed to create the protocol stack: %v", err)
+	}
+	utils.SetEthConfig(ctx, stack, &cfg.Eth)
+	if ctx.GlobalIsSet(utils.EthStatsURLFlag.Name) {
+		cfg.Ethstats.URL = ctx.GlobalString(utils.EthStatsURLFlag.Name)
+	}
+	utils.SetShhConfig(ctx, stack, &cfg.Shh)
+	utils.SetDashboardConfig(ctx, &cfg.Dashboard)
+
+	return stack, cfg
+}
+
+// enableWhisper returns true in case one of the whisper flags is set.
+func enableWhisper(ctx *cli.Context) bool {
+	for _, flag := range whisperFlags {
+		if ctx.GlobalIsSet(flag.GetName()) {
+			return true
+		}
+	}
+	return false
+}
+
+func makeFullNode(ctx *cli.Context) *node.Node {
+	stack, cfg := makeConfigNode(ctx)
+	utils.RegisterEthService(stack, &cfg.Eth)
+
+	if ctx.GlobalBool(utils.DashboardEnabledFlag.Name) {
+		utils.RegisterDashboardService(stack, &cfg.Dashboard, gitCommit)
+	}
+	// Whisper must be explicitly enabled by specifying at least 1 whisper flag or in dev mode
+	shhEnabled := enableWhisper(ctx)
+	shhAutoEnabled := !ctx.GlobalIsSet(utils.WhisperEnabledFlag.Name) && ctx.GlobalIsSet(utils.DeveloperFlag.Name)
+	if shhEnabled || shhAutoEnabled {
+		if ctx.GlobalIsSet(utils.WhisperMaxMessageSizeFlag.Name) {
+			cfg.Shh.MaxMessageSize = uint32(ctx.Int(utils.WhisperMaxMessageSizeFlag.Name))
+		}
+		if ctx.GlobalIsSet(utils.WhisperMinPOWFlag.Name) {
+			cfg.Shh.MinimumAcceptedPOW = ctx.Float64(utils.WhisperMinPOWFlag.Name)
+		}
+		if ctx.GlobalIsSet(utils.WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
+			cfg.Shh.RestrictConnectionBetweenLightClients = true
+		}
+		utils.RegisterShhService(stack, &cfg.Shh)
+	}
+	// Configure GraphQL if requested
+	if ctx.GlobalIsSet(utils.GraphQLEnabledFlag.Name) {
+		utils.RegisterGraphQLService(stack, cfg.Node.GraphQLEndpoint(), cfg.Node.GraphQLCors, cfg.Node.GraphQLVirtualHosts, cfg.Node.HTTPTimeouts)
+	}
+	// Add the Ethereum Stats daemon if requested.
+	if cfg.Ethstats.URL != "" {
+		utils.RegisterEthStatsService(stack, cfg.Ethstats.URL)
+	}
+	return stack
+}
+
+// dumpConfig is the dumpconfig command.
+func dumpConfig(ctx *cli.Context) error {
+	_, cfg := makeConfigNode(ctx)
+	comment := ""
+
+	if cfg.Eth.Genesis != nil {
+		cfg.Eth.Genesis = nil
+		comment += "# Note: this config doesn't contain the genesis block.\n\n"
+	}
+
+	out, err := tomlSettings.Marshal(&cfg)
+	if err != nil {
+		return err
+	}
+
+	dump := os.Stdout
+	if ctx.NArg() > 0 {
+		dump, err = os.OpenFile(ctx.Args().Get(0), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
+		if err != nil {
+			return err
+		}
+		defer dump.Close()
+	}
+	dump.WriteString(comment)
+	dump.Write(out)
+
+	return nil
+}
diff --git a/cmd/geth/consolecmd.go b/cmd/geth/consolecmd.go
new file mode 100644
index 0000000..0c0881b
--- /dev/null
+++ b/cmd/geth/consolecmd.go
@@ -0,0 +1,220 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package geth
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"strings"
+	"syscall"
+
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/ethereum/go-ethereum/console"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/rpc"
+	"gopkg.in/urfave/cli.v1"
+)
+
+var (
+	consoleFlags = []cli.Flag{utils.JSpathFlag, utils.ExecFlag, utils.PreloadJSFlag}
+
+	consoleCommand = cli.Command{
+		Action:   utils.MigrateFlags(localConsole),
+		Name:     "console",
+		Usage:    "Start an interactive JavaScript environment",
+		Flags:    append(append(append(nodeFlags, rpcFlags...), consoleFlags...), whisperFlags...),
+		Category: "CONSOLE COMMANDS",
+		Description: `
+The Geth console is an interactive shell for the JavaScript runtime environment
+which exposes a node admin interface as well as the Ðapp JavaScript API.
+See https://github.com/ethereum/go-ethereum/wiki/JavaScript-Console.`,
+	}
+
+	attachCommand = cli.Command{
+		Action:    utils.MigrateFlags(remoteConsole),
+		Name:      "attach",
+		Usage:     "Start an interactive JavaScript environment (connect to node)",
+		ArgsUsage: "[endpoint]",
+		Flags:     append(consoleFlags, utils.DataDirFlag),
+		Category:  "CONSOLE COMMANDS",
+		Description: `
+The Geth console is an interactive shell for the JavaScript runtime environment
+which exposes a node admin interface as well as the Ðapp JavaScript API.
+See https://github.com/ethereum/go-ethereum/wiki/JavaScript-Console.
+This command allows to open a console on a running geth node.`,
+	}
+
+	javascriptCommand = cli.Command{
+		Action:    utils.MigrateFlags(ephemeralConsole),
+		Name:      "js",
+		Usage:     "Execute the specified JavaScript files",
+		ArgsUsage: "<jsfile> [jsfile...]",
+		Flags:     append(nodeFlags, consoleFlags...),
+		Category:  "CONSOLE COMMANDS",
+		Description: `
+The JavaScript VM exposes a node admin interface as well as the Ðapp
+JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/JavaScript-Console`,
+	}
+)
+
+// localConsole starts a new geth node, attaching a JavaScript console to it at the
+// same time.
+func localConsole(ctx *cli.Context) error {
+	// Create and start the node based on the CLI flags
+	node := makeFullNode(ctx)
+	startNode(ctx, node)
+	defer node.Close()
+
+	// Attach to the newly started node and start the JavaScript console
+	client, err := node.Attach()
+	if err != nil {
+		utils.Fatalf("Failed to attach to the inproc geth: %v", err)
+	}
+	config := console.Config{
+		DataDir: utils.MakeDataDir(ctx),
+		DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
+		Client:  client,
+		Preload: utils.MakeConsolePreloads(ctx),
+	}
+
+	console, err := console.New(config)
+	if err != nil {
+		utils.Fatalf("Failed to start the JavaScript console: %v", err)
+	}
+	defer console.Stop(false)
+
+	// If only a short execution was requested, evaluate and return
+	if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
+		console.Evaluate(script)
+		return nil
+	}
+	// Otherwise print the welcome screen and enter interactive mode
+	console.Welcome()
+	console.Interactive()
+
+	return nil
+}
+
+// remoteConsole will connect to a remote geth instance, attaching a JavaScript
+// console to it.
+func remoteConsole(ctx *cli.Context) error {
+	// Attach to a remotely running geth instance and start the JavaScript console
+	endpoint := ctx.Args().First()
+	if endpoint == "" {
+		path := node.DefaultDataDir()
+		if ctx.GlobalIsSet(utils.DataDirFlag.Name) {
+			path = ctx.GlobalString(utils.DataDirFlag.Name)
+		}
+		if path != "" {
+			if ctx.GlobalBool(utils.TestnetFlag.Name) {
+				path = filepath.Join(path, "testnet")
+			} else if ctx.GlobalBool(utils.RinkebyFlag.Name) {
+				path = filepath.Join(path, "rinkeby")
+			}
+		}
+		endpoint = fmt.Sprintf("%s/geth.ipc", path)
+	}
+	client, err := dialRPC(endpoint)
+	if err != nil {
+		utils.Fatalf("Unable to attach to remote geth: %v", err)
+	}
+	config := console.Config{
+		DataDir: utils.MakeDataDir(ctx),
+		DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
+		Client:  client,
+		Preload: utils.MakeConsolePreloads(ctx),
+	}
+
+	console, err := console.New(config)
+	if err != nil {
+		utils.Fatalf("Failed to start the JavaScript console: %v", err)
+	}
+	defer console.Stop(false)
+
+	if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
+		console.Evaluate(script)
+		return nil
+	}
+
+	// Otherwise print the welcome screen and enter interactive mode
+	console.Welcome()
+	console.Interactive()
+
+	return nil
+}
+
+// dialRPC returns a RPC client which connects to the given endpoint.
+// The check for empty endpoint implements the defaulting logic
+// for "geth attach" and "geth monitor" with no argument.
+func dialRPC(endpoint string) (*rpc.Client, error) {
+	if endpoint == "" {
+		endpoint = node.DefaultIPCEndpoint(clientIdentifier)
+	} else if strings.HasPrefix(endpoint, "rpc:") || strings.HasPrefix(endpoint, "ipc:") {
+		// Backwards compatibility with geth < 1.5 which required
+		// these prefixes.
+		endpoint = endpoint[4:]
+	}
+	return rpc.Dial(endpoint)
+}
+
+// ephemeralConsole starts a new geth node, attaches an ephemeral JavaScript
+// console to it, executes each of the files specified as arguments and tears
+// everything down.
+func ephemeralConsole(ctx *cli.Context) error {
+	// Create and start the node based on the CLI flags
+	node := makeFullNode(ctx)
+	startNode(ctx, node)
+	defer node.Close()
+
+	// Attach to the newly started node and start the JavaScript console
+	client, err := node.Attach()
+	if err != nil {
+		utils.Fatalf("Failed to attach to the inproc geth: %v", err)
+	}
+	config := console.Config{
+		DataDir: utils.MakeDataDir(ctx),
+		DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
+		Client:  client,
+		Preload: utils.MakeConsolePreloads(ctx),
+	}
+
+	console, err := console.New(config)
+	if err != nil {
+		utils.Fatalf("Failed to start the JavaScript console: %v", err)
+	}
+	defer console.Stop(false)
+
+	// Evaluate each of the specified JavaScript files
+	for _, file := range ctx.Args() {
+		if err = console.Execute(file); err != nil {
+			utils.Fatalf("Failed to execute %s: %v", file, err)
+		}
+	}
+	// Wait for pending callbacks, but stop for Ctrl-C.
+	abort := make(chan os.Signal, 1)
+	signal.Notify(abort, syscall.SIGINT, syscall.SIGTERM)
+
+	go func() {
+		<-abort
+		os.Exit(0)
+	}()
+	console.Stop(true)
+
+	return nil
+}
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
new file mode 100644
index 0000000..a8ddd44
--- /dev/null
+++ b/cmd/geth/main.go
@@ -0,0 +1,398 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+// geth is the official command-line client for Ethereum.
+package geth
+
+import (
+	"fmt"
+	"math"
+	"os"
+	"runtime"
+	godebug "runtime/debug"
+	"sort"
+	"strconv"
+	"time"
+
+	"github.com/elastic/gosigar"
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/console"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/Determinant/coreth/internal/debug"
+	"github.com/ethereum/go-ethereum/les"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/node"
+	cli "gopkg.in/urfave/cli.v1"
+)
+
+const (
+	clientIdentifier = "geth" // Client identifier to advertise over the network
+)
+
+var (
+	// Git SHA1 commit hash of the release (set via linker flags)
+	gitCommit = ""
+	gitDate   = ""
+	// The App that holds all commands and flags.
+	App = utils.NewApp(gitCommit, gitDate, "the go-ethereum command line interface")
+	// flags that configure the node
+	nodeFlags = []cli.Flag{
+		utils.IdentityFlag,
+		utils.PasswordFileFlag,
+		utils.BootnodesFlag,
+		utils.BootnodesV4Flag,
+		utils.BootnodesV5Flag,
+		utils.DataDirFlag,
+		utils.AncientFlag,
+		utils.KeyStoreDirFlag,
+		utils.ExternalSignerFlag,
+		utils.NoUSBFlag,
+		utils.SmartCardDaemonPathFlag,
+		utils.DashboardEnabledFlag,
+		utils.DashboardAddrFlag,
+		utils.DashboardPortFlag,
+		utils.DashboardRefreshFlag,
+		utils.EthashCacheDirFlag,
+		utils.EthashCachesInMemoryFlag,
+		utils.EthashCachesOnDiskFlag,
+		utils.EthashDatasetDirFlag,
+		utils.EthashDatasetsInMemoryFlag,
+		utils.EthashDatasetsOnDiskFlag,
+		utils.TxPoolLocalsFlag,
+		utils.TxPoolNoLocalsFlag,
+		utils.TxPoolJournalFlag,
+		utils.TxPoolRejournalFlag,
+		utils.TxPoolPriceLimitFlag,
+		utils.TxPoolPriceBumpFlag,
+		utils.TxPoolAccountSlotsFlag,
+		utils.TxPoolGlobalSlotsFlag,
+		utils.TxPoolAccountQueueFlag,
+		utils.TxPoolGlobalQueueFlag,
+		utils.TxPoolLifetimeFlag,
+		utils.SyncModeFlag,
+		utils.ExitWhenSyncedFlag,
+		utils.GCModeFlag,
+		utils.LightServeFlag,
+		utils.LightLegacyServFlag,
+		utils.LightIngressFlag,
+		utils.LightEgressFlag,
+		utils.LightMaxPeersFlag,
+		utils.LightLegacyPeersFlag,
+		utils.LightKDFFlag,
+		utils.UltraLightServersFlag,
+		utils.UltraLightFractionFlag,
+		utils.UltraLightOnlyAnnounceFlag,
+		utils.WhitelistFlag,
+		utils.CacheFlag,
+		utils.CacheDatabaseFlag,
+		utils.CacheTrieFlag,
+		utils.CacheGCFlag,
+		utils.CacheNoPrefetchFlag,
+		utils.ListenPortFlag,
+		utils.MaxPeersFlag,
+		utils.MaxPendingPeersFlag,
+		utils.MiningEnabledFlag,
+		utils.MinerThreadsFlag,
+		utils.MinerLegacyThreadsFlag,
+		utils.MinerNotifyFlag,
+		utils.MinerGasTargetFlag,
+		utils.MinerLegacyGasTargetFlag,
+		utils.MinerGasLimitFlag,
+		utils.MinerGasPriceFlag,
+		utils.MinerLegacyGasPriceFlag,
+		utils.MinerEtherbaseFlag,
+		utils.MinerLegacyEtherbaseFlag,
+		utils.MinerExtraDataFlag,
+		utils.MinerLegacyExtraDataFlag,
+		utils.MinerRecommitIntervalFlag,
+		utils.MinerNoVerfiyFlag,
+		utils.NATFlag,
+		utils.NoDiscoverFlag,
+		utils.DiscoveryV5Flag,
+		utils.NetrestrictFlag,
+		utils.NodeKeyFileFlag,
+		utils.NodeKeyHexFlag,
+		utils.DeveloperFlag,
+		utils.DeveloperPeriodFlag,
+		utils.TestnetFlag,
+		utils.RinkebyFlag,
+		utils.GoerliFlag,
+		utils.VMEnableDebugFlag,
+		utils.NetworkIdFlag,
+		utils.EthStatsURLFlag,
+		utils.FakePoWFlag,
+		utils.NoCompactionFlag,
+		utils.GpoBlocksFlag,
+		utils.GpoPercentileFlag,
+		utils.EWASMInterpreterFlag,
+		utils.EVMInterpreterFlag,
+		configFileFlag,
+	}
+
+	rpcFlags = []cli.Flag{
+		utils.RPCEnabledFlag,
+		utils.RPCListenAddrFlag,
+		utils.RPCPortFlag,
+		utils.RPCCORSDomainFlag,
+		utils.RPCVirtualHostsFlag,
+		utils.GraphQLEnabledFlag,
+		utils.GraphQLListenAddrFlag,
+		utils.GraphQLPortFlag,
+		utils.GraphQLCORSDomainFlag,
+		utils.GraphQLVirtualHostsFlag,
+		utils.RPCApiFlag,
+		utils.WSEnabledFlag,
+		utils.WSListenAddrFlag,
+		utils.WSPortFlag,
+		utils.WSApiFlag,
+		utils.WSAllowedOriginsFlag,
+		utils.IPCDisabledFlag,
+		utils.IPCPathFlag,
+		utils.InsecureUnlockAllowedFlag,
+		utils.RPCGlobalGasCap,
+	}
+
+	whisperFlags = []cli.Flag{
+		utils.WhisperEnabledFlag,
+		utils.WhisperMaxMessageSizeFlag,
+		utils.WhisperMinPOWFlag,
+		utils.WhisperRestrictConnectionBetweenLightClientsFlag,
+	}
+
+	metricsFlags = []cli.Flag{
+		utils.MetricsEnabledFlag,
+		utils.MetricsEnabledExpensiveFlag,
+		utils.MetricsEnableInfluxDBFlag,
+		utils.MetricsInfluxDBEndpointFlag,
+		utils.MetricsInfluxDBDatabaseFlag,
+		utils.MetricsInfluxDBUsernameFlag,
+		utils.MetricsInfluxDBPasswordFlag,
+		utils.MetricsInfluxDBTagsFlag,
+	}
+)
+
+func init() {
+	// Initialize the CLI App and start Geth
+	App.Action = geth
+	App.HideVersion = true // we have a command to print the version
+	App.Copyright = "Copyright 2013-2019 The go-ethereum Authors"
+	App.Commands = []cli.Command{
+		// See chaincmd.go:
+		initCommand,
+		importCommand,
+		exportCommand,
+		importPreimagesCommand,
+		exportPreimagesCommand,
+		copydbCommand,
+		removedbCommand,
+		dumpCommand,
+		inspectCommand,
+		// See accountcmd.go:
+		// See consolecmd.go:
+		consoleCommand,
+		attachCommand,
+		javascriptCommand,
+		// See misccmd.go:
+		makecacheCommand,
+		makedagCommand,
+		versionCommand,
+		licenseCommand,
+		// See config.go
+		dumpConfigCommand,
+		// See retesteth.go
+		retestethCommand,
+	}
+	sort.Sort(cli.CommandsByName(App.Commands))
+
+	App.Flags = append(App.Flags, nodeFlags...)
+	App.Flags = append(App.Flags, rpcFlags...)
+	App.Flags = append(App.Flags, consoleFlags...)
+	App.Flags = append(App.Flags, debug.Flags...)
+	App.Flags = append(App.Flags, whisperFlags...)
+	App.Flags = append(App.Flags, metricsFlags...)
+
+	App.Before = func(ctx *cli.Context) error {
+		logdir := ""
+		if ctx.GlobalBool(utils.DashboardEnabledFlag.Name) {
+			logdir = (&node.Config{DataDir: utils.MakeDataDir(ctx)}).ResolvePath("logs")
+		}
+		if err := debug.Setup(ctx, logdir); err != nil {
+			return err
+		}
+		// If we're a full node on mainnet without --cache specified, bump default cache allowance
+		if ctx.GlobalString(utils.SyncModeFlag.Name) != "light" && !ctx.GlobalIsSet(utils.CacheFlag.Name) && !ctx.GlobalIsSet(utils.NetworkIdFlag.Name) {
+			// Make sure we're not on any supported preconfigured testnet either
+			if !ctx.GlobalIsSet(utils.TestnetFlag.Name) && !ctx.GlobalIsSet(utils.RinkebyFlag.Name) && !ctx.GlobalIsSet(utils.GoerliFlag.Name) && !ctx.GlobalIsSet(utils.DeveloperFlag.Name) {
+				// Nope, we're really on mainnet. Bump that cache up!
+				log.Info("Bumping default cache on mainnet", "provided", ctx.GlobalInt(utils.CacheFlag.Name), "updated", 4096)
+				ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(4096))
+			}
+		}
+		// If we're running a light client on any network, drop the cache to some meaningfully low amount
+		if ctx.GlobalString(utils.SyncModeFlag.Name) == "light" && !ctx.GlobalIsSet(utils.CacheFlag.Name) {
+			log.Info("Dropping default light client cache", "provided", ctx.GlobalInt(utils.CacheFlag.Name), "updated", 128)
+			ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(128))
+		}
+		// Cap the cache allowance and tune the garbage collector
+		var mem gosigar.Mem
+		// Workaround until OpenBSD support lands into gosigar
+		// Check https://github.com/elastic/gosigar#supported-platforms
+		if runtime.GOOS != "openbsd" {
+			if err := mem.Get(); err == nil {
+				allowance := int(mem.Total / 1024 / 1024 / 3)
+				if cache := ctx.GlobalInt(utils.CacheFlag.Name); cache > allowance {
+					log.Warn("Sanitizing cache to Go's GC limits", "provided", cache, "updated", allowance)
+					ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(allowance))
+				}
+			}
+		}
+		// Ensure Go's GC ignores the database cache for trigger percentage
+		cache := ctx.GlobalInt(utils.CacheFlag.Name)
+		gogc := math.Max(20, math.Min(100, 100/(float64(cache)/1024)))
+
+		log.Debug("Sanitizing Go's GC trigger", "percent", int(gogc))
+		godebug.SetGCPercent(int(gogc))
+
+		// Start metrics export if enabled
+		utils.SetupMetrics(ctx)
+
+		// Start system runtime metrics collection
+		go metrics.CollectProcessMetrics(3 * time.Second)
+
+		return nil
+	}
+
+	App.After = func(ctx *cli.Context) error {
+		debug.Exit()
+		console.Stdin.Close() // Resets terminal mode.
+		return nil
+	}
+}
+
+func main() {
+	if err := App.Run(os.Args); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+// geth is the main entry point into the system if no special subcommand is ran.
+// It creates a default node based on the command line arguments and runs it in
+// blocking mode, waiting for it to be shut down.
+func geth(ctx *cli.Context) error {
+	if args := ctx.Args(); len(args) > 0 {
+		return fmt.Errorf("invalid command: %q", args[0])
+	}
+	node := makeFullNode(ctx)
+	defer node.Close()
+	startNode(ctx, node)
+	node.Wait()
+	return nil
+}
+
+// startNode boots up the system node and all registered protocols, after which
+// it unlocks any requested accounts, and starts the RPC/IPC interfaces and the
+// miner.
+func startNode(ctx *cli.Context, stack *node.Node) {
+	debug.Memsize.Add("node", stack)
+
+	// Start up the node itself
+	utils.StartNode(stack)
+
+	// Unlock any account specifically requested
+
+	// Register wallet event handlers to open and auto-derive wallets
+
+	// Create a client to interact with local geth node.
+	rpcClient, err := stack.Attach()
+	if err != nil {
+		utils.Fatalf("Failed to attach to self: %v", err)
+	}
+	ethClient := ethclient.NewClient(rpcClient)
+
+	// Set contract backend for ethereum service if local node
+	// is serving LES requests.
+	if ctx.GlobalInt(utils.LightLegacyServFlag.Name) > 0 || ctx.GlobalInt(utils.LightServeFlag.Name) > 0 {
+		var ethService *eth.Ethereum
+		if err := stack.Service(&ethService); err != nil {
+			utils.Fatalf("Failed to retrieve ethereum service: %v", err)
+		}
+		ethService.SetContractBackend(ethClient)
+	}
+	// Set contract backend for les service if local node is
+	// running as a light client.
+	if ctx.GlobalString(utils.SyncModeFlag.Name) == "light" {
+		var lesService *les.LightEthereum
+		if err := stack.Service(&lesService); err != nil {
+			utils.Fatalf("Failed to retrieve light ethereum service: %v", err)
+		}
+		lesService.SetContractBackend(ethClient)
+	}
+
+	// Spawn a standalone goroutine for status synchronization monitoring,
+	// close the node when synchronization is complete if user required.
+	if ctx.GlobalBool(utils.ExitWhenSyncedFlag.Name) {
+		go func() {
+			sub := stack.EventMux().Subscribe(downloader.DoneEvent{})
+			defer sub.Unsubscribe()
+			for {
+				event := <-sub.Chan()
+				if event == nil {
+					continue
+				}
+				done, ok := event.Data.(downloader.DoneEvent)
+				if !ok {
+					continue
+				}
+				if timestamp := time.Unix(int64(done.Latest.Time), 0); time.Since(timestamp) < 10*time.Minute {
+					log.Info("Synchronisation completed", "latestnum", done.Latest.Number, "latesthash", done.Latest.Hash(),
+						"age", common.PrettyAge(timestamp))
+					stack.Stop()
+				}
+			}
+		}()
+	}
+
+	// Start auxiliary services if enabled
+	if ctx.GlobalBool(utils.MiningEnabledFlag.Name) || ctx.GlobalBool(utils.DeveloperFlag.Name) {
+		// Mining only makes sense if a full Ethereum node is running
+		if ctx.GlobalString(utils.SyncModeFlag.Name) == "light" {
+			utils.Fatalf("Light clients do not support mining")
+		}
+		var ethereum *eth.Ethereum
+		if err := stack.Service(&ethereum); err != nil {
+			utils.Fatalf("Ethereum service not running: %v", err)
+		}
+		// Set the gas price to the limits from the CLI and start mining
+		gasprice := utils.GlobalBig(ctx, utils.MinerLegacyGasPriceFlag.Name)
+		if ctx.IsSet(utils.MinerGasPriceFlag.Name) {
+			gasprice = utils.GlobalBig(ctx, utils.MinerGasPriceFlag.Name)
+		}
+		ethereum.TxPool().SetGasPrice(gasprice)
+
+		threads := ctx.GlobalInt(utils.MinerLegacyThreadsFlag.Name)
+		if ctx.GlobalIsSet(utils.MinerThreadsFlag.Name) {
+			threads = ctx.GlobalInt(utils.MinerThreadsFlag.Name)
+		}
+		if err := ethereum.StartMining(threads); err != nil {
+			utils.Fatalf("Failed to start mining: %v", err)
+		}
+	}
+}
diff --git a/cmd/geth/misccmd.go b/cmd/geth/misccmd.go
new file mode 100644
index 0000000..f778515
--- /dev/null
+++ b/cmd/geth/misccmd.go
@@ -0,0 +1,142 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package geth
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/ethereum/go-ethereum/consensus/ethash"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/params"
+	"gopkg.in/urfave/cli.v1"
+)
+
+var (
+	makecacheCommand = cli.Command{
+		Action:    utils.MigrateFlags(makecache),
+		Name:      "makecache",
+		Usage:     "Generate ethash verification cache (for testing)",
+		ArgsUsage: "<blockNum> <outputDir>",
+		Category:  "MISCELLANEOUS COMMANDS",
+		Description: `
+The makecache command generates an ethash cache in <outputDir>.
+
+This command exists to support the system testing project.
+Regular users do not need to execute it.
+`,
+	}
+	makedagCommand = cli.Command{
+		Action:    utils.MigrateFlags(makedag),
+		Name:      "makedag",
+		Usage:     "Generate ethash mining DAG (for testing)",
+		ArgsUsage: "<blockNum> <outputDir>",
+		Category:  "MISCELLANEOUS COMMANDS",
+		Description: `
+The makedag command generates an ethash DAG in <outputDir>.
+
+This command exists to support the system testing project.
+Regular users do not need to execute it.
+`,
+	}
+	versionCommand = cli.Command{
+		Action:    utils.MigrateFlags(version),
+		Name:      "version",
+		Usage:     "Print version numbers",
+		ArgsUsage: " ",
+		Category:  "MISCELLANEOUS COMMANDS",
+		Description: `
+The output of this command is supposed to be machine-readable.
+`,
+	}
+	licenseCommand = cli.Command{
+		Action:    utils.MigrateFlags(license),
+		Name:      "license",
+		Usage:     "Display license information",
+		ArgsUsage: " ",
+		Category:  "MISCELLANEOUS COMMANDS",
+	}
+)
+
+// makecache generates an ethash verification cache into the provided folder.
+func makecache(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 2 {
+		utils.Fatalf(`Usage: geth makecache <block number> <outputdir>`)
+	}
+	block, err := strconv.ParseUint(args[0], 0, 64)
+	if err != nil {
+		utils.Fatalf("Invalid block number: %v", err)
+	}
+	ethash.MakeCache(block, args[1])
+
+	return nil
+}
+
+// makedag generates an ethash mining DAG into the provided folder.
+func makedag(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 2 {
+		utils.Fatalf(`Usage: geth makedag <block number> <outputdir>`)
+	}
+	block, err := strconv.ParseUint(args[0], 0, 64)
+	if err != nil {
+		utils.Fatalf("Invalid block number: %v", err)
+	}
+	ethash.MakeDataset(block, args[1])
+
+	return nil
+}
+
+func version(ctx *cli.Context) error {
+	fmt.Println(strings.Title(clientIdentifier))
+	fmt.Println("Version:", params.VersionWithMeta)
+	if gitCommit != "" {
+		fmt.Println("Git Commit:", gitCommit)
+	}
+	if gitDate != "" {
+		fmt.Println("Git Commit Date:", gitDate)
+	}
+	fmt.Println("Architecture:", runtime.GOARCH)
+	fmt.Println("Protocol Versions:", eth.ProtocolVersions)
+	fmt.Println("Network Id:", eth.DefaultConfig.NetworkId)
+	fmt.Println("Go Version:", runtime.Version())
+	fmt.Println("Operating System:", runtime.GOOS)
+	fmt.Printf("GOPATH=%s\n", os.Getenv("GOPATH"))
+	fmt.Printf("GOROOT=%s\n", runtime.GOROOT())
+	return nil
+}
+
+func license(_ *cli.Context) error {
+	fmt.Println(`Geth is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Geth is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with geth. If not, see <http://www.gnu.org/licenses/>.`)
+	return nil
+}
diff --git a/cmd/geth/retesteth.go b/cmd/geth/retesteth.go
new file mode 100644
index 0000000..e3f163b
--- /dev/null
+++ b/cmd/geth/retesteth.go
@@ -0,0 +1,891 @@
+// Copyright 2019 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package geth
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"math/big"
+	"os"
+	"os/signal"
+	"strings"
+	"time"
+
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/consensus/ethash"
+	"github.com/ethereum/go-ethereum/consensus/misc"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/ethereum/go-ethereum/trie"
+
+	cli "gopkg.in/urfave/cli.v1"
+)
+
+var (
+	rpcPortFlag = cli.IntFlag{
+		Name:  "rpcport",
+		Usage: "HTTP-RPC server listening port",
+		Value: node.DefaultHTTPPort,
+	}
+	retestethCommand = cli.Command{
+		Action:      utils.MigrateFlags(retesteth),
+		Name:        "retesteth",
+		Usage:       "Launches geth in retesteth mode",
+		ArgsUsage:   "",
+		Flags:       []cli.Flag{rpcPortFlag},
+		Category:    "MISCELLANEOUS COMMANDS",
+		Description: `Launches geth in retesteth mode (no database, no network, only retesteth RPC interface)`,
+	}
+)
+
+type RetestethTestAPI interface {
+	SetChainParams(ctx context.Context, chainParams ChainParams) (bool, error)
+	MineBlocks(ctx context.Context, number uint64) (bool, error)
+	ModifyTimestamp(ctx context.Context, interval uint64) (bool, error)
+	ImportRawBlock(ctx context.Context, rawBlock hexutil.Bytes) (common.Hash, error)
+	RewindToBlock(ctx context.Context, number uint64) (bool, error)
+	GetLogHash(ctx context.Context, txHash common.Hash) (common.Hash, error)
+}
+
+type RetestethEthAPI interface {
+	SendRawTransaction(ctx context.Context, rawTx hexutil.Bytes) (common.Hash, error)
+	BlockNumber(ctx context.Context) (uint64, error)
+	GetBlockByNumber(ctx context.Context, blockNr math.HexOrDecimal64, fullTx bool) (map[string]interface{}, error)
+	GetBalance(ctx context.Context, address common.Address, blockNr math.HexOrDecimal64) (*math.HexOrDecimal256, error)
+	GetCode(ctx context.Context, address common.Address, blockNr math.HexOrDecimal64) (hexutil.Bytes, error)
+	GetTransactionCount(ctx context.Context, address common.Address, blockNr math.HexOrDecimal64) (uint64, error)
+}
+
+type RetestethDebugAPI interface {
+	AccountRange(ctx context.Context,
+		blockHashOrNumber *math.HexOrDecimal256, txIndex uint64,
+		addressHash *math.HexOrDecimal256, maxResults uint64,
+	) (AccountRangeResult, error)
+	StorageRangeAt(ctx context.Context,
+		blockHashOrNumber *math.HexOrDecimal256, txIndex uint64,
+		address common.Address,
+		begin *math.HexOrDecimal256, maxResults uint64,
+	) (StorageRangeResult, error)
+}
+
+type RetestWeb3API interface {
+	ClientVersion(ctx context.Context) (string, error)
+}
+
+type RetestethAPI struct {
+	ethDb         ethdb.Database
+	db            state.Database
+	chainConfig   *params.ChainConfig
+	author        common.Address
+	extraData     []byte
+	genesisHash   common.Hash
+	engine        *NoRewardEngine
+	blockchain    *core.BlockChain
+	blockNumber   uint64
+	txMap         map[common.Address]map[uint64]*types.Transaction // Sender -> Nonce -> Transaction
+	txSenders     map[common.Address]struct{}                      // Set of transaction senders
+	blockInterval uint64
+}
+
+type ChainParams struct {
+	SealEngine string                            `json:"sealEngine"`
+	Params     CParamsParams                     `json:"params"`
+	Genesis    CParamsGenesis                    `json:"genesis"`
+	Accounts   map[common.Address]CParamsAccount `json:"accounts"`
+}
+
+type CParamsParams struct {
+	AccountStartNonce          math.HexOrDecimal64   `json:"accountStartNonce"`
+	HomesteadForkBlock         *math.HexOrDecimal64  `json:"homesteadForkBlock"`
+	EIP150ForkBlock            *math.HexOrDecimal64  `json:"EIP150ForkBlock"`
+	EIP158ForkBlock            *math.HexOrDecimal64  `json:"EIP158ForkBlock"`
+	DaoHardforkBlock           *math.HexOrDecimal64  `json:"daoHardforkBlock"`
+	ByzantiumForkBlock         *math.HexOrDecimal64  `json:"byzantiumForkBlock"`
+	ConstantinopleForkBlock    *math.HexOrDecimal64  `json:"constantinopleForkBlock"`
+	ConstantinopleFixForkBlock *math.HexOrDecimal64  `json:"constantinopleFixForkBlock"`
+	ChainID                    *math.HexOrDecimal256 `json:"chainID"`
+	MaximumExtraDataSize       math.HexOrDecimal64   `json:"maximumExtraDataSize"`
+	TieBreakingGas             bool                  `json:"tieBreakingGas"`
+	MinGasLimit                math.HexOrDecimal64   `json:"minGasLimit"`
+	MaxGasLimit                math.HexOrDecimal64   `json:"maxGasLimit"`
+	GasLimitBoundDivisor       math.HexOrDecimal64   `json:"gasLimitBoundDivisor"`
+	MinimumDifficulty          math.HexOrDecimal256  `json:"minimumDifficulty"`
+	DifficultyBoundDivisor     math.HexOrDecimal256  `json:"difficultyBoundDivisor"`
+	DurationLimit              math.HexOrDecimal256  `json:"durationLimit"`
+	BlockReward                math.HexOrDecimal256  `json:"blockReward"`
+	NetworkID                  math.HexOrDecimal256  `json:"networkID"`
+}
+
+type CParamsGenesis struct {
+	Nonce      math.HexOrDecimal64   `json:"nonce"`
+	Difficulty *math.HexOrDecimal256 `json:"difficulty"`
+	MixHash    *math.HexOrDecimal256 `json:"mixHash"`
+	Author     common.Address        `json:"author"`
+	Timestamp  math.HexOrDecimal64   `json:"timestamp"`
+	ParentHash common.Hash           `json:"parentHash"`
+	ExtraData  hexutil.Bytes         `json:"extraData"`
+	GasLimit   math.HexOrDecimal64   `json:"gasLimit"`
+}
+
+type CParamsAccount struct {
+	Balance     *math.HexOrDecimal256 `json:"balance"`
+	Precompiled *CPAccountPrecompiled `json:"precompiled"`
+	Code        hexutil.Bytes         `json:"code"`
+	Storage     map[string]string     `json:"storage"`
+	Nonce       *math.HexOrDecimal64  `json:"nonce"`
+}
+
+type CPAccountPrecompiled struct {
+	Name          string                `json:"name"`
+	StartingBlock math.HexOrDecimal64   `json:"startingBlock"`
+	Linear        *CPAPrecompiledLinear `json:"linear"`
+}
+
+type CPAPrecompiledLinear struct {
+	Base uint64 `json:"base"`
+	Word uint64 `json:"word"`
+}
+
+type AccountRangeResult struct {
+	AddressMap map[common.Hash]common.Address `json:"addressMap"`
+	NextKey    common.Hash                    `json:"nextKey"`
+}
+
+type StorageRangeResult struct {
+	Complete bool                   `json:"complete"`
+	Storage  map[common.Hash]SRItem `json:"storage"`
+}
+
+type SRItem struct {
+	Key   string `json:"key"`
+	Value string `json:"value"`
+}
+
+type NoRewardEngine struct {
+	inner     consensus.Engine
+	rewardsOn bool
+}
+
+func (e *NoRewardEngine) Author(header *types.Header) (common.Address, error) {
+	return e.inner.Author(header)
+}
+
+func (e *NoRewardEngine) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error {
+	return e.inner.VerifyHeader(chain, header, seal)
+}
+
+func (e *NoRewardEngine) VerifyHeaders(chain consensus.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error) {
+	return e.inner.VerifyHeaders(chain, headers, seals)
+}
+
+func (e *NoRewardEngine) VerifyUncles(chain consensus.ChainReader, block *types.Block) error {
+	return e.inner.VerifyUncles(chain, block)
+}
+
+func (e *NoRewardEngine) VerifySeal(chain consensus.ChainReader, header *types.Header) error {
+	return e.inner.VerifySeal(chain, header)
+}
+
+func (e *NoRewardEngine) Prepare(chain consensus.ChainReader, header *types.Header) error {
+	return e.inner.Prepare(chain, header)
+}
+
+func (e *NoRewardEngine) accumulateRewards(config *params.ChainConfig, state *state.StateDB, header *types.Header, uncles []*types.Header) {
+	// Simply touch miner and uncle coinbase accounts
+	reward := big.NewInt(0)
+	for _, uncle := range uncles {
+		state.AddBalance(uncle.Coinbase, reward)
+	}
+	state.AddBalance(header.Coinbase, reward)
+}
+
+func (e *NoRewardEngine) Finalize(chain consensus.ChainReader, header *types.Header, statedb *state.StateDB, txs []*types.Transaction,
+	uncles []*types.Header) {
+	if e.rewardsOn {
+		e.inner.Finalize(chain, header, statedb, txs, uncles)
+	} else {
+		e.accumulateRewards(chain.Config(), statedb, header, uncles)
+		header.Root = statedb.IntermediateRoot(chain.Config().IsEIP158(header.Number))
+	}
+}
+
+func (e *NoRewardEngine) FinalizeAndAssemble(chain consensus.ChainReader, header *types.Header, statedb *state.StateDB, txs []*types.Transaction,
+	uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) {
+	if e.rewardsOn {
+		return e.inner.FinalizeAndAssemble(chain, header, statedb, txs, uncles, receipts)
+	} else {
+		e.accumulateRewards(chain.Config(), statedb, header, uncles)
+		header.Root = statedb.IntermediateRoot(chain.Config().IsEIP158(header.Number))
+
+		// Header seems complete, assemble into a block and return
+		return types.NewBlock(header, txs, uncles, receipts), nil
+	}
+}
+
+func (e *NoRewardEngine) Seal(chain consensus.ChainReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error {
+	return e.inner.Seal(chain, block, results, stop)
+}
+
+func (e *NoRewardEngine) SealHash(header *types.Header) common.Hash {
+	return e.inner.SealHash(header)
+}
+
+func (e *NoRewardEngine) CalcDifficulty(chain consensus.ChainReader, time uint64, parent *types.Header) *big.Int {
+	return e.inner.CalcDifficulty(chain, time, parent)
+}
+
+func (e *NoRewardEngine) APIs(chain consensus.ChainReader) []rpc.API {
+	return e.inner.APIs(chain)
+}
+
+func (e *NoRewardEngine) Close() error {
+	return e.inner.Close()
+}
+
+func (api *RetestethAPI) SetChainParams(ctx context.Context, chainParams ChainParams) (bool, error) {
+	// Clean up
+	if api.blockchain != nil {
+		api.blockchain.Stop()
+	}
+	if api.engine != nil {
+		api.engine.Close()
+	}
+	if api.ethDb != nil {
+		api.ethDb.Close()
+	}
+	ethDb := rawdb.NewMemoryDatabase()
+	accounts := make(core.GenesisAlloc)
+	for address, account := range chainParams.Accounts {
+		balance := big.NewInt(0)
+		if account.Balance != nil {
+			balance.Set((*big.Int)(account.Balance))
+		}
+		var nonce uint64
+		if account.Nonce != nil {
+			nonce = uint64(*account.Nonce)
+		}
+		if account.Precompiled == nil || account.Balance != nil {
+			storage := make(map[common.Hash]common.Hash)
+			for k, v := range account.Storage {
+				storage[common.HexToHash(k)] = common.HexToHash(v)
+			}
+			accounts[address] = core.GenesisAccount{
+				Balance: balance,
+				Code:    account.Code,
+				Nonce:   nonce,
+				Storage: storage,
+			}
+		}
+	}
+	chainId := big.NewInt(1)
+	if chainParams.Params.ChainID != nil {
+		chainId.Set((*big.Int)(chainParams.Params.ChainID))
+	}
+	var (
+		homesteadBlock      *big.Int
+		daoForkBlock        *big.Int
+		eip150Block         *big.Int
+		eip155Block         *big.Int
+		eip158Block         *big.Int
+		byzantiumBlock      *big.Int
+		constantinopleBlock *big.Int
+		petersburgBlock     *big.Int
+	)
+	if chainParams.Params.HomesteadForkBlock != nil {
+		homesteadBlock = big.NewInt(int64(*chainParams.Params.HomesteadForkBlock))
+	}
+	if chainParams.Params.DaoHardforkBlock != nil {
+		daoForkBlock = big.NewInt(int64(*chainParams.Params.DaoHardforkBlock))
+	}
+	if chainParams.Params.EIP150ForkBlock != nil {
+		eip150Block = big.NewInt(int64(*chainParams.Params.EIP150ForkBlock))
+	}
+	if chainParams.Params.EIP158ForkBlock != nil {
+		eip158Block = big.NewInt(int64(*chainParams.Params.EIP158ForkBlock))
+		eip155Block = eip158Block
+	}
+	if chainParams.Params.ByzantiumForkBlock != nil {
+		byzantiumBlock = big.NewInt(int64(*chainParams.Params.ByzantiumForkBlock))
+	}
+	if chainParams.Params.ConstantinopleForkBlock != nil {
+		constantinopleBlock = big.NewInt(int64(*chainParams.Params.ConstantinopleForkBlock))
+	}
+	if chainParams.Params.ConstantinopleFixForkBlock != nil {
+		petersburgBlock = big.NewInt(int64(*chainParams.Params.ConstantinopleFixForkBlock))
+	}
+	if constantinopleBlock != nil && petersburgBlock == nil {
+		petersburgBlock = big.NewInt(100000000000)
+	}
+	genesis := &core.Genesis{
+		Config: &params.ChainConfig{
+			ChainID:             chainId,
+			HomesteadBlock:      homesteadBlock,
+			DAOForkBlock:        daoForkBlock,
+			DAOForkSupport:      false,
+			EIP150Block:         eip150Block,
+			EIP155Block:         eip155Block,
+			EIP158Block:         eip158Block,
+			ByzantiumBlock:      byzantiumBlock,
+			ConstantinopleBlock: constantinopleBlock,
+			PetersburgBlock:     petersburgBlock,
+		},
+		Nonce:      uint64(chainParams.Genesis.Nonce),
+		Timestamp:  uint64(chainParams.Genesis.Timestamp),
+		ExtraData:  chainParams.Genesis.ExtraData,
+		GasLimit:   uint64(chainParams.Genesis.GasLimit),
+		Difficulty: big.NewInt(0).Set((*big.Int)(chainParams.Genesis.Difficulty)),
+		Mixhash:    common.BigToHash((*big.Int)(chainParams.Genesis.MixHash)),
+		Coinbase:   chainParams.Genesis.Author,
+		ParentHash: chainParams.Genesis.ParentHash,
+		Alloc:      accounts,
+	}
+	chainConfig, genesisHash, err := core.SetupGenesisBlock(ethDb, genesis)
+	if err != nil {
+		return false, err
+	}
+	fmt.Printf("Chain config: %v\n", chainConfig)
+
+	var inner consensus.Engine
+	switch chainParams.SealEngine {
+	case "NoProof", "NoReward":
+		inner = ethash.NewFaker()
+	case "Ethash":
+		inner = ethash.New(ethash.Config{
+			CacheDir:       "ethash",
+			CachesInMem:    2,
+			CachesOnDisk:   3,
+			DatasetsInMem:  1,
+			DatasetsOnDisk: 2,
+		}, nil, false)
+	default:
+		return false, fmt.Errorf("unrecognised seal engine: %s", chainParams.SealEngine)
+	}
+	engine := &NoRewardEngine{inner: inner, rewardsOn: chainParams.SealEngine != "NoReward"}
+
+	blockchain, err := core.NewBlockChain(ethDb, nil, chainConfig, engine, vm.Config{}, nil)
+	if err != nil {
+		return false, err
+	}
+
+	api.chainConfig = chainConfig
+	api.genesisHash = genesisHash
+	api.author = chainParams.Genesis.Author
+	api.extraData = chainParams.Genesis.ExtraData
+	api.ethDb = ethDb
+	api.engine = engine
+	api.blockchain = blockchain
+	api.db = state.NewDatabase(api.ethDb)
+	api.blockNumber = 0
+	api.txMap = make(map[common.Address]map[uint64]*types.Transaction)
+	api.txSenders = make(map[common.Address]struct{})
+	api.blockInterval = 0
+	return true, nil
+}
+
+func (api *RetestethAPI) SendRawTransaction(ctx context.Context, rawTx hexutil.Bytes) (common.Hash, error) {
+	tx := new(types.Transaction)
+	if err := rlp.DecodeBytes(rawTx, tx); err != nil {
+		// Return nil is not by mistake - some tests include sending transaction where gasLimit overflows uint64
+		return common.Hash{}, nil
+	}
+	signer := types.MakeSigner(api.chainConfig, big.NewInt(int64(api.blockNumber)))
+	sender, err := types.Sender(signer, tx)
+	if err != nil {
+		return common.Hash{}, err
+	}
+	if nonceMap, ok := api.txMap[sender]; ok {
+		nonceMap[tx.Nonce()] = tx
+	} else {
+		nonceMap = make(map[uint64]*types.Transaction)
+		nonceMap[tx.Nonce()] = tx
+		api.txMap[sender] = nonceMap
+	}
+	api.txSenders[sender] = struct{}{}
+	return tx.Hash(), nil
+}
+
+func (api *RetestethAPI) MineBlocks(ctx context.Context, number uint64) (bool, error) {
+	for i := 0; i < int(number); i++ {
+		if err := api.mineBlock(); err != nil {
+			return false, err
+		}
+	}
+	fmt.Printf("Mined %d blocks\n", number)
+	return true, nil
+}
+
+func (api *RetestethAPI) mineBlock() error {
+	parentHash := rawdb.ReadCanonicalHash(api.ethDb, api.blockNumber)
+	parent := rawdb.ReadBlock(api.ethDb, parentHash, api.blockNumber)
+	var timestamp uint64
+	if api.blockInterval == 0 {
+		timestamp = uint64(time.Now().Unix())
+	} else {
+		timestamp = parent.Time() + api.blockInterval
+	}
+	gasLimit := core.CalcGasLimit(parent, 9223372036854775807, 9223372036854775807)
+	header := &types.Header{
+		ParentHash: parent.Hash(),
+		Number:     big.NewInt(int64(api.blockNumber + 1)),
+		GasLimit:   gasLimit,
+		Extra:      api.extraData,
+		Time:       timestamp,
+	}
+	header.Coinbase = api.author
+	if api.engine != nil {
+		api.engine.Prepare(api.blockchain, header)
+	}
+	// If we are care about TheDAO hard-fork check whether to override the extra-data or not
+	if daoBlock := api.chainConfig.DAOForkBlock; daoBlock != nil {
+		// Check whether the block is among the fork extra-override range
+		limit := new(big.Int).Add(daoBlock, params.DAOForkExtraRange)
+		if header.Number.Cmp(daoBlock) >= 0 && header.Number.Cmp(limit) < 0 {
+			// Depending whether we support or oppose the fork, override differently
+			if api.chainConfig.DAOForkSupport {
+				header.Extra = common.CopyBytes(params.DAOForkBlockExtra)
+			} else if bytes.Equal(header.Extra, params.DAOForkBlockExtra) {
+				header.Extra = []byte{} // If miner opposes, don't let it use the reserved extra-data
+			}
+		}
+	}
+	statedb, err := api.blockchain.StateAt(parent.Root())
+	if err != nil {
+		return err
+	}
+	if api.chainConfig.DAOForkSupport && api.chainConfig.DAOForkBlock != nil && api.chainConfig.DAOForkBlock.Cmp(header.Number) == 0 {
+		misc.ApplyDAOHardFork(statedb)
+	}
+	gasPool := new(core.GasPool).AddGas(header.GasLimit)
+	txCount := 0
+	var txs []*types.Transaction
+	var receipts []*types.Receipt
+	var coalescedLogs []*types.Log
+	var blockFull = gasPool.Gas() < params.TxGas
+	for address := range api.txSenders {
+		if blockFull {
+			break
+		}
+		m := api.txMap[address]
+		for nonce := statedb.GetNonce(address); ; nonce++ {
+			if tx, ok := m[nonce]; ok {
+				// Try to apply transactions to the state
+				statedb.Prepare(tx.Hash(), common.Hash{}, txCount)
+				snap := statedb.Snapshot()
+
+				receipt, _, err := core.ApplyTransaction(
+					api.chainConfig,
+					api.blockchain,
+					&api.author,
+					gasPool,
+					statedb,
+					header, tx, &header.GasUsed, *api.blockchain.GetVMConfig(),
+				)
+				if err != nil {
+					statedb.RevertToSnapshot(snap)
+					break
+				}
+				txs = append(txs, tx)
+				receipts = append(receipts, receipt)
+				coalescedLogs = append(coalescedLogs, receipt.Logs...)
+				delete(m, nonce)
+				if len(m) == 0 {
+					// Last tx for the sender
+					delete(api.txMap, address)
+					delete(api.txSenders, address)
+				}
+				txCount++
+				if gasPool.Gas() < params.TxGas {
+					blockFull = true
+					break
+				}
+			} else {
+				break // Gap in the nonces
+			}
+		}
+	}
+	block, err := api.engine.FinalizeAndAssemble(api.blockchain, header, statedb, txs, []*types.Header{}, receipts)
+	if err != nil {
+		return err
+	}
+	return api.importBlock(block)
+}
+
+func (api *RetestethAPI) importBlock(block *types.Block) error {
+	if _, err := api.blockchain.InsertChain([]*types.Block{block}); err != nil {
+		return err
+	}
+	api.blockNumber = block.NumberU64()
+	fmt.Printf("Imported block %d\n", block.NumberU64())
+	return nil
+}
+
+func (api *RetestethAPI) ModifyTimestamp(ctx context.Context, interval uint64) (bool, error) {
+	api.blockInterval = interval
+	return true, nil
+}
+
+func (api *RetestethAPI) ImportRawBlock(ctx context.Context, rawBlock hexutil.Bytes) (common.Hash, error) {
+	block := new(types.Block)
+	if err := rlp.DecodeBytes(rawBlock, block); err != nil {
+		return common.Hash{}, err
+	}
+	fmt.Printf("Importing block %d with parent hash: %x, genesisHash: %x\n", block.NumberU64(), block.ParentHash(), api.genesisHash)
+	if err := api.importBlock(block); err != nil {
+		return common.Hash{}, err
+	}
+	return block.Hash(), nil
+}
+
+func (api *RetestethAPI) RewindToBlock(ctx context.Context, newHead uint64) (bool, error) {
+	if err := api.blockchain.SetHead(newHead); err != nil {
+		return false, err
+	}
+	api.blockNumber = newHead
+	return true, nil
+}
+
+var emptyListHash common.Hash = common.HexToHash("0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347")
+
+func (api *RetestethAPI) GetLogHash(ctx context.Context, txHash common.Hash) (common.Hash, error) {
+	receipt, _, _, _ := rawdb.ReadReceipt(api.ethDb, txHash, api.chainConfig)
+	if receipt == nil {
+		return emptyListHash, nil
+	} else {
+		if logListRlp, err := rlp.EncodeToBytes(receipt.Logs); err != nil {
+			return common.Hash{}, err
+		} else {
+			return common.BytesToHash(crypto.Keccak256(logListRlp)), nil
+		}
+	}
+}
+
+func (api *RetestethAPI) BlockNumber(ctx context.Context) (uint64, error) {
+	//fmt.Printf("BlockNumber, response: %d\n", api.blockNumber)
+	return api.blockNumber, nil
+}
+
+func (api *RetestethAPI) GetBlockByNumber(ctx context.Context, blockNr math.HexOrDecimal64, fullTx bool) (map[string]interface{}, error) {
+	block := api.blockchain.GetBlockByNumber(uint64(blockNr))
+	if block != nil {
+		response, err := RPCMarshalBlock(block, true, fullTx)
+		if err != nil {
+			return nil, err
+		}
+		response["author"] = response["miner"]
+		response["totalDifficulty"] = (*hexutil.Big)(api.blockchain.GetTd(block.Hash(), uint64(blockNr)))
+		return response, err
+	}
+	return nil, fmt.Errorf("block %d not found", blockNr)
+}
+
+func (api *RetestethAPI) AccountRange(ctx context.Context,
+	blockHashOrNumber *math.HexOrDecimal256, txIndex uint64,
+	addressHash *math.HexOrDecimal256, maxResults uint64,
+) (AccountRangeResult, error) {
+	var (
+		header *types.Header
+		block  *types.Block
+	)
+	if (*big.Int)(blockHashOrNumber).Cmp(big.NewInt(math.MaxInt64)) > 0 {
+		blockHash := common.BigToHash((*big.Int)(blockHashOrNumber))
+		header = api.blockchain.GetHeaderByHash(blockHash)
+		block = api.blockchain.GetBlockByHash(blockHash)
+		//fmt.Printf("Account range: %x, txIndex %d, start: %x, maxResults: %d\n", blockHash, txIndex, common.BigToHash((*big.Int)(addressHash)), maxResults)
+	} else {
+		blockNumber := (*big.Int)(blockHashOrNumber).Uint64()
+		header = api.blockchain.GetHeaderByNumber(blockNumber)
+		block = api.blockchain.GetBlockByNumber(blockNumber)
+		//fmt.Printf("Account range: %d, txIndex %d, start: %x, maxResults: %d\n", blockNumber, txIndex, common.BigToHash((*big.Int)(addressHash)), maxResults)
+	}
+	parentHeader := api.blockchain.GetHeaderByHash(header.ParentHash)
+	var root common.Hash
+	var statedb *state.StateDB
+	var err error
+	if parentHeader == nil || int(txIndex) >= len(block.Transactions()) {
+		root = header.Root
+		statedb, err = api.blockchain.StateAt(root)
+		if err != nil {
+			return AccountRangeResult{}, err
+		}
+	} else {
+		root = parentHeader.Root
+		statedb, err = api.blockchain.StateAt(root)
+		if err != nil {
+			return AccountRangeResult{}, err
+		}
+		// Recompute transactions up to the target index.
+		signer := types.MakeSigner(api.blockchain.Config(), block.Number())
+		for idx, tx := range block.Transactions() {
+			// Assemble the transaction call message and return if the requested offset
+			msg, _ := tx.AsMessage(signer)
+			context := core.NewEVMContext(msg, block.Header(), api.blockchain, nil)
+			// Not yet the searched for transaction, execute on top of the current state
+			vmenv := vm.NewEVM(context, statedb, api.blockchain.Config(), vm.Config{})
+			if _, _, _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil {
+				return AccountRangeResult{}, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err)
+			}
+			// Ensure any modifications are committed to the state
+			// Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect
+			root = statedb.IntermediateRoot(vmenv.ChainConfig().IsEIP158(block.Number()))
+			if idx == int(txIndex) {
+				// This is to make sure root can be opened by OpenTrie
+				root, err = statedb.Commit(api.chainConfig.IsEIP158(block.Number()))
+				if err != nil {
+					return AccountRangeResult{}, err
+				}
+				break
+			}
+		}
+	}
+	accountTrie, err := statedb.Database().OpenTrie(root)
+	if err != nil {
+		return AccountRangeResult{}, err
+	}
+	it := trie.NewIterator(accountTrie.NodeIterator(common.BigToHash((*big.Int)(addressHash)).Bytes()))
+	result := AccountRangeResult{AddressMap: make(map[common.Hash]common.Address)}
+	for i := 0; /*i < int(maxResults) && */ it.Next(); i++ {
+		if preimage := accountTrie.GetKey(it.Key); preimage != nil {
+			result.AddressMap[common.BytesToHash(it.Key)] = common.BytesToAddress(preimage)
+			//fmt.Printf("%x: %x\n", it.Key, preimage)
+		} else {
+			//fmt.Printf("could not find preimage for %x\n", it.Key)
+		}
+	}
+	//fmt.Printf("Number of entries returned: %d\n", len(result.AddressMap))
+	// Add the 'next key' so clients can continue downloading.
+	if it.Next() {
+		next := common.BytesToHash(it.Key)
+		result.NextKey = next
+	}
+	return result, nil
+}
+
+func (api *RetestethAPI) GetBalance(ctx context.Context, address common.Address, blockNr math.HexOrDecimal64) (*math.HexOrDecimal256, error) {
+	//fmt.Printf("GetBalance %x, block %d\n", address, blockNr)
+	header := api.blockchain.GetHeaderByNumber(uint64(blockNr))
+	statedb, err := api.blockchain.StateAt(header.Root)
+	if err != nil {
+		return nil, err
+	}
+	return (*math.HexOrDecimal256)(statedb.GetBalance(address)), nil
+}
+
+func (api *RetestethAPI) GetCode(ctx context.Context, address common.Address, blockNr math.HexOrDecimal64) (hexutil.Bytes, error) {
+	header := api.blockchain.GetHeaderByNumber(uint64(blockNr))
+	statedb, err := api.blockchain.StateAt(header.Root)
+	if err != nil {
+		return nil, err
+	}
+	return statedb.GetCode(address), nil
+}
+
+func (api *RetestethAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNr math.HexOrDecimal64) (uint64, error) {
+	header := api.blockchain.GetHeaderByNumber(uint64(blockNr))
+	statedb, err := api.blockchain.StateAt(header.Root)
+	if err != nil {
+		return 0, err
+	}
+	return statedb.GetNonce(address), nil
+}
+
+func (api *RetestethAPI) StorageRangeAt(ctx context.Context,
+	blockHashOrNumber *math.HexOrDecimal256, txIndex uint64,
+	address common.Address,
+	begin *math.HexOrDecimal256, maxResults uint64,
+) (StorageRangeResult, error) {
+	var (
+		header *types.Header
+		block  *types.Block
+	)
+	if (*big.Int)(blockHashOrNumber).Cmp(big.NewInt(math.MaxInt64)) > 0 {
+		blockHash := common.BigToHash((*big.Int)(blockHashOrNumber))
+		header = api.blockchain.GetHeaderByHash(blockHash)
+		block = api.blockchain.GetBlockByHash(blockHash)
+		//fmt.Printf("Storage range: %x, txIndex %d, addr: %x, start: %x, maxResults: %d\n",
+		//	blockHash, txIndex, address, common.BigToHash((*big.Int)(begin)), maxResults)
+	} else {
+		blockNumber := (*big.Int)(blockHashOrNumber).Uint64()
+		header = api.blockchain.GetHeaderByNumber(blockNumber)
+		block = api.blockchain.GetBlockByNumber(blockNumber)
+		//fmt.Printf("Storage range: %d, txIndex %d, addr: %x, start: %x, maxResults: %d\n",
+		//	blockNumber, txIndex, address, common.BigToHash((*big.Int)(begin)), maxResults)
+	}
+	parentHeader := api.blockchain.GetHeaderByHash(header.ParentHash)
+	var root common.Hash
+	var statedb *state.StateDB
+	var err error
+	if parentHeader == nil || int(txIndex) >= len(block.Transactions()) {
+		root = header.Root
+		statedb, err = api.blockchain.StateAt(root)
+		if err != nil {
+			return StorageRangeResult{}, err
+		}
+	} else {
+		root = parentHeader.Root
+		statedb, err = api.blockchain.StateAt(root)
+		if err != nil {
+			return StorageRangeResult{}, err
+		}
+		// Recompute transactions up to the target index.
+		signer := types.MakeSigner(api.blockchain.Config(), block.Number())
+		for idx, tx := range block.Transactions() {
+			// Assemble the transaction call message and return if the requested offset
+			msg, _ := tx.AsMessage(signer)
+			context := core.NewEVMContext(msg, block.Header(), api.blockchain, nil)
+			// Not yet the searched for transaction, execute on top of the current state
+			vmenv := vm.NewEVM(context, statedb, api.blockchain.Config(), vm.Config{})
+			if _, _, _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil {
+				return StorageRangeResult{}, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err)
+			}
+			// Ensure any modifications are committed to the state
+			// Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect
+			_ = statedb.IntermediateRoot(vmenv.ChainConfig().IsEIP158(block.Number()))
+			if idx == int(txIndex) {
+				// This is to make sure root can be opened by OpenTrie
+				_, err = statedb.Commit(vmenv.ChainConfig().IsEIP158(block.Number()))
+				if err != nil {
+					return StorageRangeResult{}, err
+				}
+			}
+		}
+	}
+	storageTrie := statedb.StorageTrie(address)
+	it := trie.NewIterator(storageTrie.NodeIterator(common.BigToHash((*big.Int)(begin)).Bytes()))
+	result := StorageRangeResult{Storage: make(map[common.Hash]SRItem)}
+	for i := 0; /*i < int(maxResults) && */ it.Next(); i++ {
+		if preimage := storageTrie.GetKey(it.Key); preimage != nil {
+			key := (*math.HexOrDecimal256)(big.NewInt(0).SetBytes(preimage))
+			v, _, err := rlp.SplitString(it.Value)
+			if err != nil {
+				return StorageRangeResult{}, err
+			}
+			value := (*math.HexOrDecimal256)(big.NewInt(0).SetBytes(v))
+			ks, _ := key.MarshalText()
+			vs, _ := value.MarshalText()
+			if len(ks)%2 != 0 {
+				ks = append(append(append([]byte{}, ks[:2]...), byte('0')), ks[2:]...)
+			}
+			if len(vs)%2 != 0 {
+				vs = append(append(append([]byte{}, vs[:2]...), byte('0')), vs[2:]...)
+			}
+			result.Storage[common.BytesToHash(it.Key)] = SRItem{
+				Key:   string(ks),
+				Value: string(vs),
+			}
+			//fmt.Printf("Key: %s, Value: %s\n", ks, vs)
+		} else {
+			//fmt.Printf("Did not find preimage for %x\n", it.Key)
+		}
+	}
+	if it.Next() {
+		result.Complete = false
+	} else {
+		result.Complete = true
+	}
+	return result, nil
+}
+
+func (api *RetestethAPI) ClientVersion(ctx context.Context) (string, error) {
+	return "Geth-" + params.VersionWithCommit(gitCommit, gitDate), nil
+}
+
+// splitAndTrim splits input separated by a comma
+// and trims excessive white space from the substrings.
+func splitAndTrim(input string) []string {
+	result := strings.Split(input, ",")
+	for i, r := range result {
+		result[i] = strings.TrimSpace(r)
+	}
+	return result
+}
+
+func retesteth(ctx *cli.Context) error {
+	log.Info("Welcome to retesteth!")
+	// register signer API with server
+	var (
+		extapiURL string
+	)
+	apiImpl := &RetestethAPI{}
+	var testApi RetestethTestAPI = apiImpl
+	var ethApi RetestethEthAPI = apiImpl
+	var debugApi RetestethDebugAPI = apiImpl
+	var web3Api RetestWeb3API = apiImpl
+	rpcAPI := []rpc.API{
+		{
+			Namespace: "test",
+			Public:    true,
+			Service:   testApi,
+			Version:   "1.0",
+		},
+		{
+			Namespace: "eth",
+			Public:    true,
+			Service:   ethApi,
+			Version:   "1.0",
+		},
+		{
+			Namespace: "debug",
+			Public:    true,
+			Service:   debugApi,
+			Version:   "1.0",
+		},
+		{
+			Namespace: "web3",
+			Public:    true,
+			Service:   web3Api,
+			Version:   "1.0",
+		},
+	}
+	vhosts := splitAndTrim(ctx.GlobalString(utils.RPCVirtualHostsFlag.Name))
+	cors := splitAndTrim(ctx.GlobalString(utils.RPCCORSDomainFlag.Name))
+
+	// start http server
+	httpEndpoint := fmt.Sprintf("%s:%d", ctx.GlobalString(utils.RPCListenAddrFlag.Name), ctx.Int(rpcPortFlag.Name))
+	listener, _, err := rpc.StartHTTPEndpoint(httpEndpoint, rpcAPI, []string{"test", "eth", "debug", "web3"}, cors, vhosts, rpc.DefaultHTTPTimeouts)
+	if err != nil {
+		utils.Fatalf("Could not start RPC api: %v", err)
+	}
+	extapiURL = fmt.Sprintf("http://%s", httpEndpoint)
+	log.Info("HTTP endpoint opened", "url", extapiURL)
+
+	defer func() {
+		listener.Close()
+		log.Info("HTTP endpoint closed", "url", httpEndpoint)
+	}()
+
+	abortChan := make(chan os.Signal)
+	signal.Notify(abortChan, os.Interrupt)
+
+	sig := <-abortChan
+	log.Info("Exiting...", "signal", sig)
+	return nil
+}
diff --git a/cmd/geth/retesteth_copypaste.go b/cmd/geth/retesteth_copypaste.go
new file mode 100644
index 0000000..6061702
--- /dev/null
+++ b/cmd/geth/retesteth_copypaste.go
@@ -0,0 +1,148 @@
+// Copyright 2019 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package geth
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// RPCTransaction represents a transaction that will serialize to the RPC representation of a transaction
+type RPCTransaction struct {
+	BlockHash        common.Hash     `json:"blockHash"`
+	BlockNumber      *hexutil.Big    `json:"blockNumber"`
+	From             common.Address  `json:"from"`
+	Gas              hexutil.Uint64  `json:"gas"`
+	GasPrice         *hexutil.Big    `json:"gasPrice"`
+	Hash             common.Hash     `json:"hash"`
+	Input            hexutil.Bytes   `json:"input"`
+	Nonce            hexutil.Uint64  `json:"nonce"`
+	To               *common.Address `json:"to"`
+	TransactionIndex hexutil.Uint    `json:"transactionIndex"`
+	Value            *hexutil.Big    `json:"value"`
+	V                *hexutil.Big    `json:"v"`
+	R                *hexutil.Big    `json:"r"`
+	S                *hexutil.Big    `json:"s"`
+}
+
+// newRPCTransaction returns a transaction that will serialize to the RPC
+// representation, with the given location metadata set (if available).
+func newRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber uint64, index uint64) *RPCTransaction {
+	var signer types.Signer = types.FrontierSigner{}
+	if tx.Protected() {
+		signer = types.NewEIP155Signer(tx.ChainId())
+	}
+	from, _ := types.Sender(signer, tx)
+	v, r, s := tx.RawSignatureValues()
+
+	result := &RPCTransaction{
+		From:     from,
+		Gas:      hexutil.Uint64(tx.Gas()),
+		GasPrice: (*hexutil.Big)(tx.GasPrice()),
+		Hash:     tx.Hash(),
+		Input:    hexutil.Bytes(tx.Data()),
+		Nonce:    hexutil.Uint64(tx.Nonce()),
+		To:       tx.To(),
+		Value:    (*hexutil.Big)(tx.Value()),
+		V:        (*hexutil.Big)(v),
+		R:        (*hexutil.Big)(r),
+		S:        (*hexutil.Big)(s),
+	}
+	if blockHash != (common.Hash{}) {
+		result.BlockHash = blockHash
+		result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
+		result.TransactionIndex = hexutil.Uint(index)
+	}
+	return result
+}
+
+// newRPCTransactionFromBlockIndex returns a transaction that will serialize to the RPC representation.
+func newRPCTransactionFromBlockIndex(b *types.Block, index uint64) *RPCTransaction {
+	txs := b.Transactions()
+	if index >= uint64(len(txs)) {
+		return nil
+	}
+	return newRPCTransaction(txs[index], b.Hash(), b.NumberU64(), index)
+}
+
+// newRPCTransactionFromBlockHash returns a transaction that will serialize to the RPC representation.
+func newRPCTransactionFromBlockHash(b *types.Block, hash common.Hash) *RPCTransaction {
+	for idx, tx := range b.Transactions() {
+		if tx.Hash() == hash {
+			return newRPCTransactionFromBlockIndex(b, uint64(idx))
+		}
+	}
+	return nil
+}
+
+// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
+// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
+// transaction hashes.
+func RPCMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
+	head := b.Header() // copies the header once
+	fields := map[string]interface{}{
+		"number":           (*hexutil.Big)(head.Number),
+		"hash":             b.Hash(),
+		"parentHash":       head.ParentHash,
+		"nonce":            head.Nonce,
+		"mixHash":          head.MixDigest,
+		"sha3Uncles":       head.UncleHash,
+		"logsBloom":        head.Bloom,
+		"stateRoot":        head.Root,
+		"miner":            head.Coinbase,
+		"difficulty":       (*hexutil.Big)(head.Difficulty),
+		"extraData":        hexutil.Bytes(head.Extra),
+		"size":             hexutil.Uint64(b.Size()),
+		"gasLimit":         hexutil.Uint64(head.GasLimit),
+		"gasUsed":          hexutil.Uint64(head.GasUsed),
+		"timestamp":        hexutil.Uint64(head.Time),
+		"transactionsRoot": head.TxHash,
+		"receiptsRoot":     head.ReceiptHash,
+	}
+
+	if inclTx {
+		formatTx := func(tx *types.Transaction) (interface{}, error) {
+			return tx.Hash(), nil
+		}
+		if fullTx {
+			formatTx = func(tx *types.Transaction) (interface{}, error) {
+				return newRPCTransactionFromBlockHash(b, tx.Hash()), nil
+			}
+		}
+		txs := b.Transactions()
+		transactions := make([]interface{}, len(txs))
+		var err error
+		for i, tx := range txs {
+			if transactions[i], err = formatTx(tx); err != nil {
+				return nil, err
+			}
+		}
+		fields["transactions"] = transactions
+	}
+
+	uncles := b.Uncles()
+	uncleHashes := make([]common.Hash, len(uncles))
+	for i, uncle := range uncles {
+		uncleHashes[i] = uncle.Hash()
+	}
+	fields["uncles"] = uncleHashes
+
+	return fields, nil
+}
diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go
new file mode 100644
index 0000000..038d967
--- /dev/null
+++ b/cmd/geth/usage.go
@@ -0,0 +1,370 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains the geth command usage template and generator.
+
+package geth
+
+import (
+	"io"
+	"sort"
+
+	"strings"
+
+	"github.com/Determinant/coreth/cmd/utils"
+	"github.com/Determinant/coreth/internal/debug"
+	cli "gopkg.in/urfave/cli.v1"
+)
+
+// AppHelpTemplate is the test template for the default, global app help topic.
+var AppHelpTemplate = `NAME:
+   {{.App.Name}} - {{.App.Usage}}
+
+   Copyright 2013-2019 The go-ethereum Authors
+
+USAGE:
+   {{.App.HelpName}} [options]{{if .App.Commands}} command [command options]{{end}} {{if .App.ArgsUsage}}{{.App.ArgsUsage}}{{else}}[arguments...]{{end}}
+   {{if .App.Version}}
+VERSION:
+   {{.App.Version}}
+   {{end}}{{if len .App.Authors}}
+AUTHOR(S):
+   {{range .App.Authors}}{{ . }}{{end}}
+   {{end}}{{if .App.Commands}}
+COMMANDS:
+   {{range .App.Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
+   {{end}}{{end}}{{if .FlagGroups}}
+{{range .FlagGroups}}{{.Name}} OPTIONS:
+  {{range .Flags}}{{.}}
+  {{end}}
+{{end}}{{end}}{{if .App.Copyright }}
+COPYRIGHT:
+   {{.App.Copyright}}
+   {{end}}
+`
+
+// flagGroup is a collection of flags belonging to a single topic.
+type flagGroup struct {
+	Name  string
+	Flags []cli.Flag
+}
+
+// AppHelpFlagGroups is the application flags, grouped by functionality.
+var AppHelpFlagGroups = []flagGroup{
+	{
+		Name: "ETHEREUM",
+		Flags: []cli.Flag{
+			configFileFlag,
+			utils.DataDirFlag,
+			utils.AncientFlag,
+			utils.KeyStoreDirFlag,
+			utils.NoUSBFlag,
+			utils.SmartCardDaemonPathFlag,
+			utils.NetworkIdFlag,
+			utils.TestnetFlag,
+			utils.RinkebyFlag,
+			utils.GoerliFlag,
+			utils.SyncModeFlag,
+			utils.ExitWhenSyncedFlag,
+			utils.GCModeFlag,
+			utils.EthStatsURLFlag,
+			utils.IdentityFlag,
+			utils.LightKDFFlag,
+			utils.WhitelistFlag,
+		},
+	},
+	{
+		Name: "LIGHT CLIENT",
+		Flags: []cli.Flag{
+			utils.LightServeFlag,
+			utils.LightIngressFlag,
+			utils.LightEgressFlag,
+			utils.LightMaxPeersFlag,
+			utils.UltraLightServersFlag,
+			utils.UltraLightFractionFlag,
+			utils.UltraLightOnlyAnnounceFlag,
+		},
+	},
+	{
+		Name: "DEVELOPER CHAIN",
+		Flags: []cli.Flag{
+			utils.DeveloperFlag,
+			utils.DeveloperPeriodFlag,
+		},
+	},
+	{
+		Name: "ETHASH",
+		Flags: []cli.Flag{
+			utils.EthashCacheDirFlag,
+			utils.EthashCachesInMemoryFlag,
+			utils.EthashCachesOnDiskFlag,
+			utils.EthashDatasetDirFlag,
+			utils.EthashDatasetsInMemoryFlag,
+			utils.EthashDatasetsOnDiskFlag,
+		},
+	},
+	//{
+	//	Name: "DASHBOARD",
+	//	Flags: []cli.Flag{
+	//		utils.DashboardEnabledFlag,
+	//		utils.DashboardAddrFlag,
+	//		utils.DashboardPortFlag,
+	//		utils.DashboardRefreshFlag,
+	//		utils.DashboardAssetsFlag,
+	//	},
+	//},
+	{
+		Name: "TRANSACTION POOL",
+		Flags: []cli.Flag{
+			utils.TxPoolLocalsFlag,
+			utils.TxPoolNoLocalsFlag,
+			utils.TxPoolJournalFlag,
+			utils.TxPoolRejournalFlag,
+			utils.TxPoolPriceLimitFlag,
+			utils.TxPoolPriceBumpFlag,
+			utils.TxPoolAccountSlotsFlag,
+			utils.TxPoolGlobalSlotsFlag,
+			utils.TxPoolAccountQueueFlag,
+			utils.TxPoolGlobalQueueFlag,
+			utils.TxPoolLifetimeFlag,
+		},
+	},
+	{
+		Name: "PERFORMANCE TUNING",
+		Flags: []cli.Flag{
+			utils.CacheFlag,
+			utils.CacheDatabaseFlag,
+			utils.CacheTrieFlag,
+			utils.CacheGCFlag,
+			utils.CacheNoPrefetchFlag,
+		},
+	},
+	{
+		Name: "ACCOUNT",
+		Flags: []cli.Flag{
+			utils.UnlockedAccountFlag,
+			utils.PasswordFileFlag,
+			utils.ExternalSignerFlag,
+			utils.InsecureUnlockAllowedFlag,
+		},
+	},
+	{
+		Name: "API AND CONSOLE",
+		Flags: []cli.Flag{
+			utils.IPCDisabledFlag,
+			utils.IPCPathFlag,
+			utils.RPCEnabledFlag,
+			utils.RPCListenAddrFlag,
+			utils.RPCPortFlag,
+			utils.RPCApiFlag,
+			utils.RPCGlobalGasCap,
+			utils.RPCCORSDomainFlag,
+			utils.RPCVirtualHostsFlag,
+			utils.WSEnabledFlag,
+			utils.WSListenAddrFlag,
+			utils.WSPortFlag,
+			utils.WSApiFlag,
+			utils.WSAllowedOriginsFlag,
+			utils.GraphQLEnabledFlag,
+			utils.GraphQLListenAddrFlag,
+			utils.GraphQLPortFlag,
+			utils.GraphQLCORSDomainFlag,
+			utils.GraphQLVirtualHostsFlag,
+			utils.JSpathFlag,
+			utils.ExecFlag,
+			utils.PreloadJSFlag,
+		},
+	},
+	{
+		Name: "NETWORKING",
+		Flags: []cli.Flag{
+			utils.BootnodesFlag,
+			utils.BootnodesV4Flag,
+			utils.BootnodesV5Flag,
+			utils.ListenPortFlag,
+			utils.MaxPeersFlag,
+			utils.MaxPendingPeersFlag,
+			utils.NATFlag,
+			utils.NoDiscoverFlag,
+			utils.DiscoveryV5Flag,
+			utils.NetrestrictFlag,
+			utils.NodeKeyFileFlag,
+			utils.NodeKeyHexFlag,
+		},
+	},
+	{
+		Name: "MINER",
+		Flags: []cli.Flag{
+			utils.MiningEnabledFlag,
+			utils.MinerThreadsFlag,
+			utils.MinerNotifyFlag,
+			utils.MinerGasPriceFlag,
+			utils.MinerGasTargetFlag,
+			utils.MinerGasLimitFlag,
+			utils.MinerEtherbaseFlag,
+			utils.MinerExtraDataFlag,
+			utils.MinerRecommitIntervalFlag,
+			utils.MinerNoVerfiyFlag,
+		},
+	},
+	{
+		Name: "GAS PRICE ORACLE",
+		Flags: []cli.Flag{
+			utils.GpoBlocksFlag,
+			utils.GpoPercentileFlag,
+		},
+	},
+	{
+		Name: "VIRTUAL MACHINE",
+		Flags: []cli.Flag{
+			utils.VMEnableDebugFlag,
+			utils.EVMInterpreterFlag,
+			utils.EWASMInterpreterFlag,
+		},
+	},
+	{
+		Name: "LOGGING AND DEBUGGING",
+		Flags: append([]cli.Flag{
+			utils.FakePoWFlag,
+			utils.NoCompactionFlag,
+		}, debug.Flags...),
+	},
+	{
+		Name:  "METRICS AND STATS",
+		Flags: metricsFlags,
+	},
+	{
+		Name:  "WHISPER (EXPERIMENTAL)",
+		Flags: whisperFlags,
+	},
+	{
+		Name: "DEPRECATED",
+		Flags: []cli.Flag{
+			utils.LightLegacyServFlag,
+			utils.LightLegacyPeersFlag,
+			utils.MinerLegacyThreadsFlag,
+			utils.MinerLegacyGasTargetFlag,
+			utils.MinerLegacyGasPriceFlag,
+			utils.MinerLegacyEtherbaseFlag,
+			utils.MinerLegacyExtraDataFlag,
+		},
+	},
+	{
+		Name: "MISC",
+	},
+}
+
+// byCategory sorts an array of flagGroup by Name in the order
+// defined in AppHelpFlagGroups.
+type byCategory []flagGroup
+
+func (a byCategory) Len() int      { return len(a) }
+func (a byCategory) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
+func (a byCategory) Less(i, j int) bool {
+	iCat, jCat := a[i].Name, a[j].Name
+	iIdx, jIdx := len(AppHelpFlagGroups), len(AppHelpFlagGroups) // ensure non categorized flags come last
+
+	for i, group := range AppHelpFlagGroups {
+		if iCat == group.Name {
+			iIdx = i
+		}
+		if jCat == group.Name {
+			jIdx = i
+		}
+	}
+
+	return iIdx < jIdx
+}
+
+func flagCategory(flag cli.Flag) string {
+	for _, category := range AppHelpFlagGroups {
+		for _, flg := range category.Flags {
+			if flg.GetName() == flag.GetName() {
+				return category.Name
+			}
+		}
+	}
+	return "MISC"
+}
+
+func init() {
+	// Override the default app help template
+	cli.AppHelpTemplate = AppHelpTemplate
+
+	// Define a one shot struct to pass to the usage template
+	type helpData struct {
+		App        interface{}
+		FlagGroups []flagGroup
+	}
+
+	// Override the default app help printer, but only for the global app help
+	originalHelpPrinter := cli.HelpPrinter
+	cli.HelpPrinter = func(w io.Writer, tmpl string, data interface{}) {
+		if tmpl == AppHelpTemplate {
+			// Iterate over all the flags and add any uncategorized ones
+			categorized := make(map[string]struct{})
+			for _, group := range AppHelpFlagGroups {
+				for _, flag := range group.Flags {
+					categorized[flag.String()] = struct{}{}
+				}
+			}
+			var uncategorized []cli.Flag
+			for _, flag := range data.(*cli.App).Flags {
+				if _, ok := categorized[flag.String()]; !ok {
+					if strings.HasPrefix(flag.GetName(), "dashboard") {
+						continue
+					}
+					uncategorized = append(uncategorized, flag)
+				}
+			}
+			if len(uncategorized) > 0 {
+				// Append all ungategorized options to the misc group
+				miscs := len(AppHelpFlagGroups[len(AppHelpFlagGroups)-1].Flags)
+				AppHelpFlagGroups[len(AppHelpFlagGroups)-1].Flags = append(AppHelpFlagGroups[len(AppHelpFlagGroups)-1].Flags, uncategorized...)
+
+				// Make sure they are removed afterwards
+				defer func() {
+					AppHelpFlagGroups[len(AppHelpFlagGroups)-1].Flags = AppHelpFlagGroups[len(AppHelpFlagGroups)-1].Flags[:miscs]
+				}()
+			}
+			// Render out custom usage screen
+			originalHelpPrinter(w, tmpl, helpData{data, AppHelpFlagGroups})
+		} else if tmpl == utils.CommandHelpTemplate {
+			// Iterate over all command specific flags and categorize them
+			categorized := make(map[string][]cli.Flag)
+			for _, flag := range data.(cli.Command).Flags {
+				if _, ok := categorized[flag.String()]; !ok {
+					categorized[flagCategory(flag)] = append(categorized[flagCategory(flag)], flag)
+				}
+			}
+
+			// sort to get a stable ordering
+			sorted := make([]flagGroup, 0, len(categorized))
+			for cat, flgs := range categorized {
+				sorted = append(sorted, flagGroup{cat, flgs})
+			}
+			sort.Sort(byCategory(sorted))
+
+			// add sorted array to data and render with default printer
+			originalHelpPrinter(w, tmpl, map[string]interface{}{
+				"cmd":              data,
+				"categorizedFlags": sorted,
+			})
+		} else {
+			originalHelpPrinter(w, tmpl, data)
+		}
+	}
+}
diff --git a/cmd/utils/cmd.go b/cmd/utils/cmd.go
new file mode 100644
index 0000000..97597bb
--- /dev/null
+++ b/cmd/utils/cmd.go
@@ -0,0 +1,314 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+// Package utils contains internal helper functions for go-ethereum commands.
+package utils
+
+import (
+	"compress/gzip"
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"runtime"
+	"strings"
+	"syscall"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/Determinant/coreth/internal/debug"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+const (
+	importBatchSize = 2500
+)
+
+// Fatalf formats a message to standard error and exits the program.
+// The message is also printed to standard output if standard error
+// is redirected to a different file.
+func Fatalf(format string, args ...interface{}) {
+	w := io.MultiWriter(os.Stdout, os.Stderr)
+	if runtime.GOOS == "windows" {
+		// The SameFile check below doesn't work on Windows.
+		// stdout is unlikely to get redirected though, so just print there.
+		w = os.Stdout
+	} else {
+		outf, _ := os.Stdout.Stat()
+		errf, _ := os.Stderr.Stat()
+		if outf != nil && errf != nil && os.SameFile(outf, errf) {
+			w = os.Stderr
+		}
+	}
+	fmt.Fprintf(w, "Fatal: "+format+"\n", args...)
+	os.Exit(1)
+}
+
+func StartNode(stack *node.Node) {
+	if err := stack.Start(); err != nil {
+		Fatalf("Error starting protocol stack: %v", err)
+	}
+	go func() {
+		sigc := make(chan os.Signal, 1)
+		signal.Notify(sigc, syscall.SIGINT, syscall.SIGTERM)
+		defer signal.Stop(sigc)
+		<-sigc
+		log.Info("Got interrupt, shutting down...")
+		go stack.Stop()
+		for i := 10; i > 0; i-- {
+			<-sigc
+			if i > 1 {
+				log.Warn("Already shutting down, interrupt more to panic.", "times", i-1)
+			}
+		}
+		debug.Exit() // ensure trace and CPU profile data is flushed.
+		debug.LoudPanic("boom")
+	}()
+}
+
+func ImportChain(chain *core.BlockChain, fn string) error {
+	// Watch for Ctrl-C while the import is running.
+	// If a signal is received, the import will stop at the next batch.
+	interrupt := make(chan os.Signal, 1)
+	stop := make(chan struct{})
+	signal.Notify(interrupt, syscall.SIGINT, syscall.SIGTERM)
+	defer signal.Stop(interrupt)
+	defer close(interrupt)
+	go func() {
+		if _, ok := <-interrupt; ok {
+			log.Info("Interrupted during import, stopping at next batch")
+		}
+		close(stop)
+	}()
+	checkInterrupt := func() bool {
+		select {
+		case <-stop:
+			return true
+		default:
+			return false
+		}
+	}
+
+	log.Info("Importing blockchain", "file", fn)
+
+	// Open the file handle and potentially unwrap the gzip stream
+	fh, err := os.Open(fn)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	var reader io.Reader = fh
+	if strings.HasSuffix(fn, ".gz") {
+		if reader, err = gzip.NewReader(reader); err != nil {
+			return err
+		}
+	}
+	stream := rlp.NewStream(reader, 0)
+
+	// Run actual the import.
+	blocks := make(types.Blocks, importBatchSize)
+	n := 0
+	for batch := 0; ; batch++ {
+		// Load a batch of RLP blocks.
+		if checkInterrupt() {
+			return fmt.Errorf("interrupted")
+		}
+		i := 0
+		for ; i < importBatchSize; i++ {
+			var b types.Block
+			if err := stream.Decode(&b); err == io.EOF {
+				break
+			} else if err != nil {
+				return fmt.Errorf("at block %d: %v", n, err)
+			}
+			// don't import first block
+			if b.NumberU64() == 0 {
+				i--
+				continue
+			}
+			blocks[i] = &b
+			n++
+		}
+		if i == 0 {
+			break
+		}
+		// Import the batch.
+		if checkInterrupt() {
+			return fmt.Errorf("interrupted")
+		}
+		missing := missingBlocks(chain, blocks[:i])
+		if len(missing) == 0 {
+			log.Info("Skipping batch as all blocks present", "batch", batch, "first", blocks[0].Hash(), "last", blocks[i-1].Hash())
+			continue
+		}
+		if _, err := chain.InsertChain(missing); err != nil {
+			return fmt.Errorf("invalid block %d: %v", n, err)
+		}
+	}
+	return nil
+}
+
+func missingBlocks(chain *core.BlockChain, blocks []*types.Block) []*types.Block {
+	head := chain.CurrentBlock()
+	for i, block := range blocks {
+		// If we're behind the chain head, only check block, state is available at head
+		if head.NumberU64() > block.NumberU64() {
+			if !chain.HasBlock(block.Hash(), block.NumberU64()) {
+				return blocks[i:]
+			}
+			continue
+		}
+		// If we're above the chain head, state availability is a must
+		if !chain.HasBlockAndState(block.Hash(), block.NumberU64()) {
+			return blocks[i:]
+		}
+	}
+	return nil
+}
+
+// ExportChain exports a blockchain into the specified file, truncating any data
+// already present in the file.
+func ExportChain(blockchain *core.BlockChain, fn string) error {
+	log.Info("Exporting blockchain", "file", fn)
+
+	// Open the file handle and potentially wrap with a gzip stream
+	fh, err := os.OpenFile(fn, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	var writer io.Writer = fh
+	if strings.HasSuffix(fn, ".gz") {
+		writer = gzip.NewWriter(writer)
+		defer writer.(*gzip.Writer).Close()
+	}
+	// Iterate over the blocks and export them
+	if err := blockchain.Export(writer); err != nil {
+		return err
+	}
+	log.Info("Exported blockchain", "file", fn)
+
+	return nil
+}
+
+// ExportAppendChain exports a blockchain into the specified file, appending to
+// the file if data already exists in it.
+func ExportAppendChain(blockchain *core.BlockChain, fn string, first uint64, last uint64) error {
+	log.Info("Exporting blockchain", "file", fn)
+
+	// Open the file handle and potentially wrap with a gzip stream
+	fh, err := os.OpenFile(fn, os.O_CREATE|os.O_APPEND|os.O_WRONLY, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	var writer io.Writer = fh
+	if strings.HasSuffix(fn, ".gz") {
+		writer = gzip.NewWriter(writer)
+		defer writer.(*gzip.Writer).Close()
+	}
+	// Iterate over the blocks and export them
+	if err := blockchain.ExportN(writer, first, last); err != nil {
+		return err
+	}
+	log.Info("Exported blockchain to", "file", fn)
+	return nil
+}
+
+// ImportPreimages imports a batch of exported hash preimages into the database.
+func ImportPreimages(db ethdb.Database, fn string) error {
+	log.Info("Importing preimages", "file", fn)
+
+	// Open the file handle and potentially unwrap the gzip stream
+	fh, err := os.Open(fn)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	var reader io.Reader = fh
+	if strings.HasSuffix(fn, ".gz") {
+		if reader, err = gzip.NewReader(reader); err != nil {
+			return err
+		}
+	}
+	stream := rlp.NewStream(reader, 0)
+
+	// Import the preimages in batches to prevent disk trashing
+	preimages := make(map[common.Hash][]byte)
+
+	for {
+		// Read the next entry and ensure it's not junk
+		var blob []byte
+
+		if err := stream.Decode(&blob); err != nil {
+			if err == io.EOF {
+				break
+			}
+			return err
+		}
+		// Accumulate the preimages and flush when enough ws gathered
+		preimages[crypto.Keccak256Hash(blob)] = common.CopyBytes(blob)
+		if len(preimages) > 1024 {
+			rawdb.WritePreimages(db, preimages)
+			preimages = make(map[common.Hash][]byte)
+		}
+	}
+	// Flush the last batch preimage data
+	if len(preimages) > 0 {
+		rawdb.WritePreimages(db, preimages)
+	}
+	return nil
+}
+
+// ExportPreimages exports all known hash preimages into the specified file,
+// truncating any data already present in the file.
+func ExportPreimages(db ethdb.Database, fn string) error {
+	log.Info("Exporting preimages", "file", fn)
+
+	// Open the file handle and potentially wrap with a gzip stream
+	fh, err := os.OpenFile(fn, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	var writer io.Writer = fh
+	if strings.HasSuffix(fn, ".gz") {
+		writer = gzip.NewWriter(writer)
+		defer writer.(*gzip.Writer).Close()
+	}
+	// Iterate over the preimages and export them
+	it := db.NewIteratorWithPrefix([]byte("secure-key-"))
+	defer it.Release()
+
+	for it.Next() {
+		if err := rlp.Encode(writer, it.Value()); err != nil {
+			return err
+		}
+	}
+	log.Info("Exported preimages", "file", fn)
+	return nil
+}
diff --git a/cmd/utils/customflags.go b/cmd/utils/customflags.go
new file mode 100644
index 0000000..e5bf872
--- /dev/null
+++ b/cmd/utils/customflags.go
@@ -0,0 +1,240 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package utils
+
+import (
+	"encoding"
+	"errors"
+	"flag"
+	"fmt"
+	"math/big"
+	"os"
+	"os/user"
+	"path"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/common/math"
+	"gopkg.in/urfave/cli.v1"
+)
+
+// Custom type which is registered in the flags library which cli uses for
+// argument parsing. This allows us to expand Value to an absolute path when
+// the argument is parsed
+type DirectoryString struct {
+	Value string
+}
+
+func (self *DirectoryString) String() string {
+	return self.Value
+}
+
+func (self *DirectoryString) Set(value string) error {
+	self.Value = expandPath(value)
+	return nil
+}
+
+// Custom cli.Flag type which expand the received string to an absolute path.
+// e.g. ~/.ethereum -> /home/username/.ethereum
+type DirectoryFlag struct {
+	Name  string
+	Value DirectoryString
+	Usage string
+}
+
+func (self DirectoryFlag) String() string {
+	fmtString := "%s %v\t%v"
+	if len(self.Value.Value) > 0 {
+		fmtString = "%s \"%v\"\t%v"
+	}
+	return fmt.Sprintf(fmtString, prefixedNames(self.Name), self.Value.Value, self.Usage)
+}
+
+func eachName(longName string, fn func(string)) {
+	parts := strings.Split(longName, ",")
+	for _, name := range parts {
+		name = strings.Trim(name, " ")
+		fn(name)
+	}
+}
+
+// called by cli library, grabs variable from environment (if in env)
+// and adds variable to flag set for parsing.
+func (self DirectoryFlag) Apply(set *flag.FlagSet) {
+	eachName(self.Name, func(name string) {
+		set.Var(&self.Value, self.Name, self.Usage)
+	})
+}
+
+type TextMarshaler interface {
+	encoding.TextMarshaler
+	encoding.TextUnmarshaler
+}
+
+// textMarshalerVal turns a TextMarshaler into a flag.Value
+type textMarshalerVal struct {
+	v TextMarshaler
+}
+
+func (v textMarshalerVal) String() string {
+	if v.v == nil {
+		return ""
+	}
+	text, _ := v.v.MarshalText()
+	return string(text)
+}
+
+func (v textMarshalerVal) Set(s string) error {
+	return v.v.UnmarshalText([]byte(s))
+}
+
+// TextMarshalerFlag wraps a TextMarshaler value.
+type TextMarshalerFlag struct {
+	Name  string
+	Value TextMarshaler
+	Usage string
+}
+
+func (f TextMarshalerFlag) GetName() string {
+	return f.Name
+}
+
+func (f TextMarshalerFlag) String() string {
+	return fmt.Sprintf("%s \"%v\"\t%v", prefixedNames(f.Name), f.Value, f.Usage)
+}
+
+func (f TextMarshalerFlag) Apply(set *flag.FlagSet) {
+	eachName(f.Name, func(name string) {
+		set.Var(textMarshalerVal{f.Value}, f.Name, f.Usage)
+	})
+}
+
+// GlobalTextMarshaler returns the value of a TextMarshalerFlag from the global flag set.
+func GlobalTextMarshaler(ctx *cli.Context, name string) TextMarshaler {
+	val := ctx.GlobalGeneric(name)
+	if val == nil {
+		return nil
+	}
+	return val.(textMarshalerVal).v
+}
+
+// BigFlag is a command line flag that accepts 256 bit big integers in decimal or
+// hexadecimal syntax.
+type BigFlag struct {
+	Name  string
+	Value *big.Int
+	Usage string
+}
+
+// bigValue turns *big.Int into a flag.Value
+type bigValue big.Int
+
+func (b *bigValue) String() string {
+	if b == nil {
+		return ""
+	}
+	return (*big.Int)(b).String()
+}
+
+func (b *bigValue) Set(s string) error {
+	int, ok := math.ParseBig256(s)
+	if !ok {
+		return errors.New("invalid integer syntax")
+	}
+	*b = (bigValue)(*int)
+	return nil
+}
+
+func (f BigFlag) GetName() string {
+	return f.Name
+}
+
+func (f BigFlag) String() string {
+	fmtString := "%s %v\t%v"
+	if f.Value != nil {
+		fmtString = "%s \"%v\"\t%v"
+	}
+	return fmt.Sprintf(fmtString, prefixedNames(f.Name), f.Value, f.Usage)
+}
+
+func (f BigFlag) Apply(set *flag.FlagSet) {
+	eachName(f.Name, func(name string) {
+		set.Var((*bigValue)(f.Value), f.Name, f.Usage)
+	})
+}
+
+// GlobalBig returns the value of a BigFlag from the global flag set.
+func GlobalBig(ctx *cli.Context, name string) *big.Int {
+	val := ctx.GlobalGeneric(name)
+	if val == nil {
+		return nil
+	}
+	return (*big.Int)(val.(*bigValue))
+}
+
+func prefixFor(name string) (prefix string) {
+	if len(name) == 1 {
+		prefix = "-"
+	} else {
+		prefix = "--"
+	}
+
+	return
+}
+
+func prefixedNames(fullName string) (prefixed string) {
+	parts := strings.Split(fullName, ",")
+	for i, name := range parts {
+		name = strings.Trim(name, " ")
+		prefixed += prefixFor(name) + name
+		if i < len(parts)-1 {
+			prefixed += ", "
+		}
+	}
+	return
+}
+
+func (self DirectoryFlag) GetName() string {
+	return self.Name
+}
+
+func (self *DirectoryFlag) Set(value string) {
+	self.Value.Value = value
+}
+
+// Expands a file path
+// 1. replace tilde with users home dir
+// 2. expands embedded environment variables
+// 3. cleans the path, e.g. /a/b/../c -> /a/c
+// Note, it has limitations, e.g. ~someuser/tmp will not be expanded
+func expandPath(p string) string {
+	if strings.HasPrefix(p, "~/") || strings.HasPrefix(p, "~\\") {
+		if home := homeDir(); home != "" {
+			p = home + p[1:]
+		}
+	}
+	return path.Clean(os.ExpandEnv(p))
+}
+
+func homeDir() string {
+	if home := os.Getenv("HOME"); home != "" {
+		return home
+	}
+	if usr, err := user.Current(); err == nil {
+		return usr.HomeDir
+	}
+	return ""
+}
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
new file mode 100644
index 0000000..7e28dff
--- /dev/null
+++ b/cmd/utils/flags.go
@@ -0,0 +1,1747 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+// Package utils contains internal helper functions for go-ethereum commands.
+package utils
+
+import (
+	"crypto/ecdsa"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"math/big"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/ethereum/go-ethereum/accounts"
+	"github.com/ethereum/go-ethereum/accounts/keystore"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/fdlimit"
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/consensus/clique"
+	"github.com/ethereum/go-ethereum/consensus/ethash"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/dashboard"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/eth/gasprice"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethstats"
+	"github.com/ethereum/go-ethereum/graphql"
+	"github.com/ethereum/go-ethereum/les"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/metrics/influxdb"
+	"github.com/ethereum/go-ethereum/miner"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discv5"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+	"github.com/ethereum/go-ethereum/p2p/nat"
+	"github.com/ethereum/go-ethereum/p2p/netutil"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/ethereum/go-ethereum/rpc"
+	whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
+	pcsclite "github.com/gballet/go-libpcsclite"
+	cli "gopkg.in/urfave/cli.v1"
+)
+
+var (
+	CommandHelpTemplate = `{{.cmd.Name}}{{if .cmd.Subcommands}} command{{end}}{{if .cmd.Flags}} [command options]{{end}} [arguments...]
+{{if .cmd.Description}}{{.cmd.Description}}
+{{end}}{{if .cmd.Subcommands}}
+SUBCOMMANDS:
+	{{range .cmd.Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
+	{{end}}{{end}}{{if .categorizedFlags}}
+{{range $idx, $categorized := .categorizedFlags}}{{$categorized.Name}} OPTIONS:
+{{range $categorized.Flags}}{{"\t"}}{{.}}
+{{end}}
+{{end}}{{end}}`
+)
+
+func init() {
+	cli.AppHelpTemplate = `{{.Name}} {{if .Flags}}[global options] {{end}}command{{if .Flags}} [command options]{{end}} [arguments...]
+
+VERSION:
+   {{.Version}}
+
+COMMANDS:
+   {{range .Commands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
+   {{end}}{{if .Flags}}
+GLOBAL OPTIONS:
+   {{range .Flags}}{{.}}
+   {{end}}{{end}}
+`
+
+	cli.CommandHelpTemplate = CommandHelpTemplate
+}
+
+// NewApp creates an app with sane defaults.
+func NewApp(gitCommit, gitDate, usage string) *cli.App {
+	app := cli.NewApp()
+	app.Name = filepath.Base(os.Args[0])
+	app.Author = ""
+	app.Email = ""
+	app.Version = params.VersionWithCommit(gitCommit, gitDate)
+	app.Usage = usage
+	return app
+}
+
+// These are all the command line flags we support.
+// If you add to this list, please remember to include the
+// flag in the appropriate command definition.
+//
+// The flags are defined here so their names and help texts
+// are the same for all commands.
+
+var (
+	// General settings
+	DataDirFlag = DirectoryFlag{
+		Name:  "datadir",
+		Usage: "Data directory for the databases and keystore",
+		Value: DirectoryString{node.DefaultDataDir()},
+	}
+	AncientFlag = DirectoryFlag{
+		Name:  "datadir.ancient",
+		Usage: "Data directory for ancient chain segments (default = inside chaindata)",
+	}
+	KeyStoreDirFlag = DirectoryFlag{
+		Name:  "keystore",
+		Usage: "Directory for the keystore (default = inside the datadir)",
+	}
+	NoUSBFlag = cli.BoolFlag{
+		Name:  "nousb",
+		Usage: "Disables monitoring for and managing USB hardware wallets",
+	}
+	SmartCardDaemonPathFlag = cli.StringFlag{
+		Name:  "pcscdpath",
+		Usage: "Path to the smartcard daemon (pcscd) socket file",
+		Value: pcsclite.PCSCDSockName,
+	}
+	NetworkIdFlag = cli.Uint64Flag{
+		Name:  "networkid",
+		Usage: "Network identifier (integer, 1=Frontier, 2=Morden (disused), 3=Ropsten, 4=Rinkeby)",
+		Value: eth.DefaultConfig.NetworkId,
+	}
+	TestnetFlag = cli.BoolFlag{
+		Name:  "testnet",
+		Usage: "Ropsten network: pre-configured proof-of-work test network",
+	}
+	RinkebyFlag = cli.BoolFlag{
+		Name:  "rinkeby",
+		Usage: "Rinkeby network: pre-configured proof-of-authority test network",
+	}
+	GoerliFlag = cli.BoolFlag{
+		Name:  "goerli",
+		Usage: "Görli network: pre-configured proof-of-authority test network",
+	}
+	DeveloperFlag = cli.BoolFlag{
+		Name:  "dev",
+		Usage: "Ephemeral proof-of-authority network with a pre-funded developer account, mining enabled",
+	}
+	DeveloperPeriodFlag = cli.IntFlag{
+		Name:  "dev.period",
+		Usage: "Block period to use in developer mode (0 = mine only if transaction pending)",
+	}
+	IdentityFlag = cli.StringFlag{
+		Name:  "identity",
+		Usage: "Custom node name",
+	}
+	DocRootFlag = DirectoryFlag{
+		Name:  "docroot",
+		Usage: "Document Root for HTTPClient file scheme",
+		Value: DirectoryString{homeDir()},
+	}
+	ExitWhenSyncedFlag = cli.BoolFlag{
+		Name:  "exitwhensynced",
+		Usage: "Exits after block synchronisation completes",
+	}
+	IterativeOutputFlag = cli.BoolFlag{
+		Name:  "iterative",
+		Usage: "Print streaming JSON iteratively, delimited by newlines",
+	}
+	ExcludeStorageFlag = cli.BoolFlag{
+		Name:  "nostorage",
+		Usage: "Exclude storage entries (save db lookups)",
+	}
+	IncludeIncompletesFlag = cli.BoolFlag{
+		Name:  "incompletes",
+		Usage: "Include accounts for which we don't have the address (missing preimage)",
+	}
+	ExcludeCodeFlag = cli.BoolFlag{
+		Name:  "nocode",
+		Usage: "Exclude contract code (save db lookups)",
+	}
+	defaultSyncMode = eth.DefaultConfig.SyncMode
+	SyncModeFlag    = TextMarshalerFlag{
+		Name:  "syncmode",
+		Usage: `Blockchain sync mode ("fast", "full", or "light")`,
+		Value: &defaultSyncMode,
+	}
+	GCModeFlag = cli.StringFlag{
+		Name:  "gcmode",
+		Usage: `Blockchain garbage collection mode ("full", "archive")`,
+		Value: "full",
+	}
+	LightKDFFlag = cli.BoolFlag{
+		Name:  "lightkdf",
+		Usage: "Reduce key-derivation RAM & CPU usage at some expense of KDF strength",
+	}
+	WhitelistFlag = cli.StringFlag{
+		Name:  "whitelist",
+		Usage: "Comma separated block number-to-hash mappings to enforce (<number>=<hash>)",
+	}
+	// Light server and client settings
+	LightLegacyServFlag = cli.IntFlag{ // Deprecated in favor of light.serve, remove in 2021
+		Name:  "lightserv",
+		Usage: "Maximum percentage of time allowed for serving LES requests (deprecated, use --light.serve)",
+		Value: eth.DefaultConfig.LightServ,
+	}
+	LightServeFlag = cli.IntFlag{
+		Name:  "light.serve",
+		Usage: "Maximum percentage of time allowed for serving LES requests (multi-threaded processing allows values over 100)",
+		Value: eth.DefaultConfig.LightServ,
+	}
+	LightIngressFlag = cli.IntFlag{
+		Name:  "light.ingress",
+		Usage: "Incoming bandwidth limit for serving light clients (kilobytes/sec, 0 = unlimited)",
+		Value: eth.DefaultConfig.LightIngress,
+	}
+	LightEgressFlag = cli.IntFlag{
+		Name:  "light.egress",
+		Usage: "Outgoing bandwidth limit for serving light clients (kilobytes/sec, 0 = unlimited)",
+		Value: eth.DefaultConfig.LightEgress,
+	}
+	LightLegacyPeersFlag = cli.IntFlag{ // Deprecated in favor of light.maxpeers, remove in 2021
+		Name:  "lightpeers",
+		Usage: "Maximum number of light clients to serve, or light servers to attach to  (deprecated, use --light.maxpeers)",
+		Value: eth.DefaultConfig.LightPeers,
+	}
+	LightMaxPeersFlag = cli.IntFlag{
+		Name:  "light.maxpeers",
+		Usage: "Maximum number of light clients to serve, or light servers to attach to",
+		Value: eth.DefaultConfig.LightPeers,
+	}
+	UltraLightServersFlag = cli.StringFlag{
+		Name:  "ulc.servers",
+		Usage: "List of trusted ultra-light servers",
+		Value: strings.Join(eth.DefaultConfig.UltraLightServers, ","),
+	}
+	UltraLightFractionFlag = cli.IntFlag{
+		Name:  "ulc.fraction",
+		Usage: "Minimum % of trusted ultra-light servers required to announce a new head",
+		Value: eth.DefaultConfig.UltraLightFraction,
+	}
+	UltraLightOnlyAnnounceFlag = cli.BoolFlag{
+		Name:  "ulc.onlyannounce",
+		Usage: "Ultra light server sends announcements only",
+	}
+	// Dashboard settings
+	DashboardEnabledFlag = cli.BoolFlag{
+		Name:  "dashboard",
+		Usage: "Enable the dashboard",
+	}
+	DashboardAddrFlag = cli.StringFlag{
+		Name:  "dashboard.addr",
+		Usage: "Dashboard listening interface",
+		Value: dashboard.DefaultConfig.Host,
+	}
+	DashboardPortFlag = cli.IntFlag{
+		Name:  "dashboard.host",
+		Usage: "Dashboard listening port",
+		Value: dashboard.DefaultConfig.Port,
+	}
+	DashboardRefreshFlag = cli.DurationFlag{
+		Name:  "dashboard.refresh",
+		Usage: "Dashboard metrics collection refresh rate",
+		Value: dashboard.DefaultConfig.Refresh,
+	}
+	// Ethash settings
+	EthashCacheDirFlag = DirectoryFlag{
+		Name:  "ethash.cachedir",
+		Usage: "Directory to store the ethash verification caches (default = inside the datadir)",
+	}
+	EthashCachesInMemoryFlag = cli.IntFlag{
+		Name:  "ethash.cachesinmem",
+		Usage: "Number of recent ethash caches to keep in memory (16MB each)",
+		Value: eth.DefaultConfig.Ethash.CachesInMem,
+	}
+	EthashCachesOnDiskFlag = cli.IntFlag{
+		Name:  "ethash.cachesondisk",
+		Usage: "Number of recent ethash caches to keep on disk (16MB each)",
+		Value: eth.DefaultConfig.Ethash.CachesOnDisk,
+	}
+	EthashDatasetDirFlag = DirectoryFlag{
+		Name:  "ethash.dagdir",
+		Usage: "Directory to store the ethash mining DAGs (default = inside home folder)",
+		Value: DirectoryString{eth.DefaultConfig.Ethash.DatasetDir},
+	}
+	EthashDatasetsInMemoryFlag = cli.IntFlag{
+		Name:  "ethash.dagsinmem",
+		Usage: "Number of recent ethash mining DAGs to keep in memory (1+GB each)",
+		Value: eth.DefaultConfig.Ethash.DatasetsInMem,
+	}
+	EthashDatasetsOnDiskFlag = cli.IntFlag{
+		Name:  "ethash.dagsondisk",
+		Usage: "Number of recent ethash mining DAGs to keep on disk (1+GB each)",
+		Value: eth.DefaultConfig.Ethash.DatasetsOnDisk,
+	}
+	// Transaction pool settings
+	TxPoolLocalsFlag = cli.StringFlag{
+		Name:  "txpool.locals",
+		Usage: "Comma separated accounts to treat as locals (no flush, priority inclusion)",
+	}
+	TxPoolNoLocalsFlag = cli.BoolFlag{
+		Name:  "txpool.nolocals",
+		Usage: "Disables price exemptions for locally submitted transactions",
+	}
+	TxPoolJournalFlag = cli.StringFlag{
+		Name:  "txpool.journal",
+		Usage: "Disk journal for local transaction to survive node restarts",
+		Value: core.DefaultTxPoolConfig.Journal,
+	}
+	TxPoolRejournalFlag = cli.DurationFlag{
+		Name:  "txpool.rejournal",
+		Usage: "Time interval to regenerate the local transaction journal",
+		Value: core.DefaultTxPoolConfig.Rejournal,
+	}
+	TxPoolPriceLimitFlag = cli.Uint64Flag{
+		Name:  "txpool.pricelimit",
+		Usage: "Minimum gas price limit to enforce for acceptance into the pool",
+		Value: eth.DefaultConfig.TxPool.PriceLimit,
+	}
+	TxPoolPriceBumpFlag = cli.Uint64Flag{
+		Name:  "txpool.pricebump",
+		Usage: "Price bump percentage to replace an already existing transaction",
+		Value: eth.DefaultConfig.TxPool.PriceBump,
+	}
+	TxPoolAccountSlotsFlag = cli.Uint64Flag{
+		Name:  "txpool.accountslots",
+		Usage: "Minimum number of executable transaction slots guaranteed per account",
+		Value: eth.DefaultConfig.TxPool.AccountSlots,
+	}
+	TxPoolGlobalSlotsFlag = cli.Uint64Flag{
+		Name:  "txpool.globalslots",
+		Usage: "Maximum number of executable transaction slots for all accounts",
+		Value: eth.DefaultConfig.TxPool.GlobalSlots,
+	}
+	TxPoolAccountQueueFlag = cli.Uint64Flag{
+		Name:  "txpool.accountqueue",
+		Usage: "Maximum number of non-executable transaction slots permitted per account",
+		Value: eth.DefaultConfig.TxPool.AccountQueue,
+	}
+	TxPoolGlobalQueueFlag = cli.Uint64Flag{
+		Name:  "txpool.globalqueue",
+		Usage: "Maximum number of non-executable transaction slots for all accounts",
+		Value: eth.DefaultConfig.TxPool.GlobalQueue,
+	}
+	TxPoolLifetimeFlag = cli.DurationFlag{
+		Name:  "txpool.lifetime",
+		Usage: "Maximum amount of time non-executable transaction are queued",
+		Value: eth.DefaultConfig.TxPool.Lifetime,
+	}
+	// Performance tuning settings
+	CacheFlag = cli.IntFlag{
+		Name:  "cache",
+		Usage: "Megabytes of memory allocated to internal caching (default = 4096 mainnet full node, 128 light mode)",
+		Value: 1024,
+	}
+	CacheDatabaseFlag = cli.IntFlag{
+		Name:  "cache.database",
+		Usage: "Percentage of cache memory allowance to use for database io",
+		Value: 50,
+	}
+	CacheTrieFlag = cli.IntFlag{
+		Name:  "cache.trie",
+		Usage: "Percentage of cache memory allowance to use for trie caching (default = 25% full mode, 50% archive mode)",
+		Value: 25,
+	}
+	CacheGCFlag = cli.IntFlag{
+		Name:  "cache.gc",
+		Usage: "Percentage of cache memory allowance to use for trie pruning (default = 25% full mode, 0% archive mode)",
+		Value: 25,
+	}
+	CacheNoPrefetchFlag = cli.BoolFlag{
+		Name:  "cache.noprefetch",
+		Usage: "Disable heuristic state prefetch during block import (less CPU and disk IO, more time waiting for data)",
+	}
+	// Miner settings
+	MiningEnabledFlag = cli.BoolFlag{
+		Name:  "mine",
+		Usage: "Enable mining",
+	}
+	MinerThreadsFlag = cli.IntFlag{
+		Name:  "miner.threads",
+		Usage: "Number of CPU threads to use for mining",
+		Value: 0,
+	}
+	MinerLegacyThreadsFlag = cli.IntFlag{
+		Name:  "minerthreads",
+		Usage: "Number of CPU threads to use for mining (deprecated, use --miner.threads)",
+		Value: 0,
+	}
+	MinerNotifyFlag = cli.StringFlag{
+		Name:  "miner.notify",
+		Usage: "Comma separated HTTP URL list to notify of new work packages",
+	}
+	MinerGasTargetFlag = cli.Uint64Flag{
+		Name:  "miner.gastarget",
+		Usage: "Target gas floor for mined blocks",
+		Value: eth.DefaultConfig.Miner.GasFloor,
+	}
+	MinerLegacyGasTargetFlag = cli.Uint64Flag{
+		Name:  "targetgaslimit",
+		Usage: "Target gas floor for mined blocks (deprecated, use --miner.gastarget)",
+		Value: eth.DefaultConfig.Miner.GasFloor,
+	}
+	MinerGasLimitFlag = cli.Uint64Flag{
+		Name:  "miner.gaslimit",
+		Usage: "Target gas ceiling for mined blocks",
+		Value: eth.DefaultConfig.Miner.GasCeil,
+	}
+	MinerGasPriceFlag = BigFlag{
+		Name:  "miner.gasprice",
+		Usage: "Minimum gas price for mining a transaction",
+		Value: eth.DefaultConfig.Miner.GasPrice,
+	}
+	MinerLegacyGasPriceFlag = BigFlag{
+		Name:  "gasprice",
+		Usage: "Minimum gas price for mining a transaction (deprecated, use --miner.gasprice)",
+		Value: eth.DefaultConfig.Miner.GasPrice,
+	}
+	MinerEtherbaseFlag = cli.StringFlag{
+		Name:  "miner.etherbase",
+		Usage: "Public address for block mining rewards (default = first account)",
+		Value: "0",
+	}
+	MinerLegacyEtherbaseFlag = cli.StringFlag{
+		Name:  "etherbase",
+		Usage: "Public address for block mining rewards (default = first account, deprecated, use --miner.etherbase)",
+		Value: "0",
+	}
+	MinerExtraDataFlag = cli.StringFlag{
+		Name:  "miner.extradata",
+		Usage: "Block extra data set by the miner (default = client version)",
+	}
+	MinerLegacyExtraDataFlag = cli.StringFlag{
+		Name:  "extradata",
+		Usage: "Block extra data set by the miner (default = client version, deprecated, use --miner.extradata)",
+	}
+	MinerRecommitIntervalFlag = cli.DurationFlag{
+		Name:  "miner.recommit",
+		Usage: "Time interval to recreate the block being mined",
+		Value: eth.DefaultConfig.Miner.Recommit,
+	}
+	MinerNoVerfiyFlag = cli.BoolFlag{
+		Name:  "miner.noverify",
+		Usage: "Disable remote sealing verification",
+	}
+	// Account settings
+	UnlockedAccountFlag = cli.StringFlag{
+		Name:  "unlock",
+		Usage: "Comma separated list of accounts to unlock",
+		Value: "",
+	}
+	PasswordFileFlag = cli.StringFlag{
+		Name:  "password",
+		Usage: "Password file to use for non-interactive password input",
+		Value: "",
+	}
+	ExternalSignerFlag = cli.StringFlag{
+		Name:  "signer",
+		Usage: "External signer (url or path to ipc file)",
+		Value: "",
+	}
+	VMEnableDebugFlag = cli.BoolFlag{
+		Name:  "vmdebug",
+		Usage: "Record information useful for VM and contract debugging",
+	}
+	InsecureUnlockAllowedFlag = cli.BoolFlag{
+		Name:  "allow-insecure-unlock",
+		Usage: "Allow insecure account unlocking when account-related RPCs are exposed by http",
+	}
+	RPCGlobalGasCap = cli.Uint64Flag{
+		Name:  "rpc.gascap",
+		Usage: "Sets a cap on gas that can be used in eth_call/estimateGas",
+	}
+	// Logging and debug settings
+	EthStatsURLFlag = cli.StringFlag{
+		Name:  "ethstats",
+		Usage: "Reporting URL of a ethstats service (nodename:secret@host:port)",
+	}
+	FakePoWFlag = cli.BoolFlag{
+		Name:  "fakepow",
+		Usage: "Disables proof-of-work verification",
+	}
+	NoCompactionFlag = cli.BoolFlag{
+		Name:  "nocompaction",
+		Usage: "Disables db compaction after import",
+	}
+	// RPC settings
+	IPCDisabledFlag = cli.BoolFlag{
+		Name:  "ipcdisable",
+		Usage: "Disable the IPC-RPC server",
+	}
+	IPCPathFlag = DirectoryFlag{
+		Name:  "ipcpath",
+		Usage: "Filename for IPC socket/pipe within the datadir (explicit paths escape it)",
+	}
+	RPCEnabledFlag = cli.BoolFlag{
+		Name:  "rpc",
+		Usage: "Enable the HTTP-RPC server",
+	}
+	RPCListenAddrFlag = cli.StringFlag{
+		Name:  "rpcaddr",
+		Usage: "HTTP-RPC server listening interface",
+		Value: node.DefaultHTTPHost,
+	}
+	RPCPortFlag = cli.IntFlag{
+		Name:  "rpcport",
+		Usage: "HTTP-RPC server listening port",
+		Value: node.DefaultHTTPPort,
+	}
+	RPCCORSDomainFlag = cli.StringFlag{
+		Name:  "rpccorsdomain",
+		Usage: "Comma separated list of domains from which to accept cross origin requests (browser enforced)",
+		Value: "",
+	}
+	RPCVirtualHostsFlag = cli.StringFlag{
+		Name:  "rpcvhosts",
+		Usage: "Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard.",
+		Value: strings.Join(node.DefaultConfig.HTTPVirtualHosts, ","),
+	}
+	RPCApiFlag = cli.StringFlag{
+		Name:  "rpcapi",
+		Usage: "API's offered over the HTTP-RPC interface",
+		Value: "",
+	}
+	WSEnabledFlag = cli.BoolFlag{
+		Name:  "ws",
+		Usage: "Enable the WS-RPC server",
+	}
+	WSListenAddrFlag = cli.StringFlag{
+		Name:  "wsaddr",
+		Usage: "WS-RPC server listening interface",
+		Value: node.DefaultWSHost,
+	}
+	WSPortFlag = cli.IntFlag{
+		Name:  "wsport",
+		Usage: "WS-RPC server listening port",
+		Value: node.DefaultWSPort,
+	}
+	WSApiFlag = cli.StringFlag{
+		Name:  "wsapi",
+		Usage: "API's offered over the WS-RPC interface",
+		Value: "",
+	}
+	WSAllowedOriginsFlag = cli.StringFlag{
+		Name:  "wsorigins",
+		Usage: "Origins from which to accept websockets requests",
+		Value: "",
+	}
+	GraphQLEnabledFlag = cli.BoolFlag{
+		Name:  "graphql",
+		Usage: "Enable the GraphQL server",
+	}
+	GraphQLListenAddrFlag = cli.StringFlag{
+		Name:  "graphql.addr",
+		Usage: "GraphQL server listening interface",
+		Value: node.DefaultGraphQLHost,
+	}
+	GraphQLPortFlag = cli.IntFlag{
+		Name:  "graphql.port",
+		Usage: "GraphQL server listening port",
+		Value: node.DefaultGraphQLPort,
+	}
+	GraphQLCORSDomainFlag = cli.StringFlag{
+		Name:  "graphql.corsdomain",
+		Usage: "Comma separated list of domains from which to accept cross origin requests (browser enforced)",
+		Value: "",
+	}
+	GraphQLVirtualHostsFlag = cli.StringFlag{
+		Name:  "graphql.vhosts",
+		Usage: "Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard.",
+		Value: strings.Join(node.DefaultConfig.GraphQLVirtualHosts, ","),
+	}
+	ExecFlag = cli.StringFlag{
+		Name:  "exec",
+		Usage: "Execute JavaScript statement",
+	}
+	PreloadJSFlag = cli.StringFlag{
+		Name:  "preload",
+		Usage: "Comma separated list of JavaScript files to preload into the console",
+	}
+
+	// Network Settings
+	MaxPeersFlag = cli.IntFlag{
+		Name:  "maxpeers",
+		Usage: "Maximum number of network peers (network disabled if set to 0)",
+		Value: node.DefaultConfig.P2P.MaxPeers,
+	}
+	MaxPendingPeersFlag = cli.IntFlag{
+		Name:  "maxpendpeers",
+		Usage: "Maximum number of pending connection attempts (defaults used if set to 0)",
+		Value: node.DefaultConfig.P2P.MaxPendingPeers,
+	}
+	ListenPortFlag = cli.IntFlag{
+		Name:  "port",
+		Usage: "Network listening port",
+		Value: 30303,
+	}
+	BootnodesFlag = cli.StringFlag{
+		Name:  "bootnodes",
+		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{
+		Name:  "nodekey",
+		Usage: "P2P node key file",
+	}
+	NodeKeyHexFlag = cli.StringFlag{
+		Name:  "nodekeyhex",
+		Usage: "P2P node key as hex (for testing)",
+	}
+	NATFlag = cli.StringFlag{
+		Name:  "nat",
+		Usage: "NAT port mapping mechanism (any|none|upnp|pmp|extip:<IP>)",
+		Value: "any",
+	}
+	NoDiscoverFlag = cli.BoolFlag{
+		Name:  "nodiscover",
+		Usage: "Disables the peer discovery mechanism (manual peer addition)",
+	}
+	DiscoveryV5Flag = cli.BoolFlag{
+		Name:  "v5disc",
+		Usage: "Enables the experimental RLPx V5 (Topic Discovery) mechanism",
+	}
+	NetrestrictFlag = cli.StringFlag{
+		Name:  "netrestrict",
+		Usage: "Restricts network communication to the given IP networks (CIDR masks)",
+	}
+
+	// ATM the url is left to the user and deployment to
+	JSpathFlag = cli.StringFlag{
+		Name:  "jspath",
+		Usage: "JavaScript root path for `loadScript`",
+		Value: ".",
+	}
+
+	// Gas price oracle settings
+	GpoBlocksFlag = cli.IntFlag{
+		Name:  "gpoblocks",
+		Usage: "Number of recent blocks to check for gas prices",
+		Value: eth.DefaultConfig.GPO.Blocks,
+	}
+	GpoPercentileFlag = cli.IntFlag{
+		Name:  "gpopercentile",
+		Usage: "Suggested gas price is the given percentile of a set of recent transaction gas prices",
+		Value: eth.DefaultConfig.GPO.Percentile,
+	}
+	WhisperEnabledFlag = cli.BoolFlag{
+		Name:  "shh",
+		Usage: "Enable Whisper",
+	}
+	WhisperMaxMessageSizeFlag = cli.IntFlag{
+		Name:  "shh.maxmessagesize",
+		Usage: "Max message size accepted",
+		Value: int(whisper.DefaultMaxMessageSize),
+	}
+	WhisperMinPOWFlag = cli.Float64Flag{
+		Name:  "shh.pow",
+		Usage: "Minimum POW accepted",
+		Value: whisper.DefaultMinimumPoW,
+	}
+	WhisperRestrictConnectionBetweenLightClientsFlag = cli.BoolFlag{
+		Name:  "shh.restrict-light",
+		Usage: "Restrict connection between two whisper light clients",
+	}
+
+	// Metrics flags
+	MetricsEnabledFlag = cli.BoolFlag{
+		Name:  "metrics",
+		Usage: "Enable metrics collection and reporting",
+	}
+	MetricsEnabledExpensiveFlag = cli.BoolFlag{
+		Name:  "metrics.expensive",
+		Usage: "Enable expensive metrics collection and reporting",
+	}
+	MetricsEnableInfluxDBFlag = cli.BoolFlag{
+		Name:  "metrics.influxdb",
+		Usage: "Enable metrics export/push to an external InfluxDB database",
+	}
+	MetricsInfluxDBEndpointFlag = cli.StringFlag{
+		Name:  "metrics.influxdb.endpoint",
+		Usage: "InfluxDB API endpoint to report metrics to",
+		Value: "http://localhost:8086",
+	}
+	MetricsInfluxDBDatabaseFlag = cli.StringFlag{
+		Name:  "metrics.influxdb.database",
+		Usage: "InfluxDB database name to push reported metrics to",
+		Value: "geth",
+	}
+	MetricsInfluxDBUsernameFlag = cli.StringFlag{
+		Name:  "metrics.influxdb.username",
+		Usage: "Username to authorize access to the database",
+		Value: "test",
+	}
+	MetricsInfluxDBPasswordFlag = cli.StringFlag{
+		Name:  "metrics.influxdb.password",
+		Usage: "Password to authorize access to the database",
+		Value: "test",
+	}
+	// Tags are part of every measurement sent to InfluxDB. Queries on tags are faster in InfluxDB.
+	// For example `host` tag could be used so that we can group all nodes and average a measurement
+	// across all of them, but also so that we can select a specific node and inspect its measurements.
+	// https://docs.influxdata.com/influxdb/v1.4/concepts/key_concepts/#tag-key
+	MetricsInfluxDBTagsFlag = cli.StringFlag{
+		Name:  "metrics.influxdb.tags",
+		Usage: "Comma-separated InfluxDB tags (key/values) attached to all measurements",
+		Value: "host=localhost",
+	}
+
+	EWASMInterpreterFlag = cli.StringFlag{
+		Name:  "vm.ewasm",
+		Usage: "External ewasm configuration (default = built-in interpreter)",
+		Value: "",
+	}
+	EVMInterpreterFlag = cli.StringFlag{
+		Name:  "vm.evm",
+		Usage: "External EVM configuration (default = built-in interpreter)",
+		Value: "",
+	}
+)
+
+// MakeDataDir retrieves the currently requested data directory, terminating
+// if none (or the empty string) is specified. If the node is starting a testnet,
+// the a subdirectory of the specified datadir will be used.
+func MakeDataDir(ctx *cli.Context) string {
+	if path := ctx.GlobalString(DataDirFlag.Name); path != "" {
+		if ctx.GlobalBool(TestnetFlag.Name) {
+			return filepath.Join(path, "testnet")
+		}
+		if ctx.GlobalBool(RinkebyFlag.Name) {
+			return filepath.Join(path, "rinkeby")
+		}
+		if ctx.GlobalBool(GoerliFlag.Name) {
+			return filepath.Join(path, "goerli")
+		}
+		return path
+	}
+	Fatalf("Cannot determine default data directory, please set manually (--datadir)")
+	return ""
+}
+
+// setNodeKey creates a node key from set command line flags, either loading it
+// from a file or as a specified hex value. If neither flags were provided, this
+// method returns nil and an emphemeral key is to be generated.
+func setNodeKey(ctx *cli.Context, cfg *p2p.Config) {
+	var (
+		hex  = ctx.GlobalString(NodeKeyHexFlag.Name)
+		file = ctx.GlobalString(NodeKeyFileFlag.Name)
+		key  *ecdsa.PrivateKey
+		err  error
+	)
+	switch {
+	case file != "" && hex != "":
+		Fatalf("Options %q and %q are mutually exclusive", NodeKeyFileFlag.Name, NodeKeyHexFlag.Name)
+	case file != "":
+		if key, err = crypto.LoadECDSA(file); err != nil {
+			Fatalf("Option %q: %v", NodeKeyFileFlag.Name, err)
+		}
+		cfg.PrivateKey = key
+	case hex != "":
+		if key, err = crypto.HexToECDSA(hex); err != nil {
+			Fatalf("Option %q: %v", NodeKeyHexFlag.Name, err)
+		}
+		cfg.PrivateKey = key
+	}
+}
+
+// setNodeUserIdent creates the user identifier from CLI flags.
+func setNodeUserIdent(ctx *cli.Context, cfg *node.Config) {
+	if identity := ctx.GlobalString(IdentityFlag.Name); len(identity) > 0 {
+		cfg.UserIdent = identity
+	}
+}
+
+// setBootstrapNodes creates a list of bootstrap nodes from the command line
+// flags, reverting to pre-configured ones if none have been specified.
+func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {
+	urls := params.MainnetBootnodes
+	switch {
+	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):
+		urls = params.RinkebyBootnodes
+	case ctx.GlobalBool(GoerliFlag.Name):
+		urls = params.GoerliBootnodes
+	case cfg.BootstrapNodes != nil:
+		return // already set, don't apply defaults.
+	}
+
+	cfg.BootstrapNodes = make([]*enode.Node, 0, len(urls))
+	for _, url := range urls {
+		if url != "" {
+			node, err := enode.Parse(enode.ValidSchemes, url)
+			if err != nil {
+				log.Crit("Bootstrap URL invalid", "enode", url, "err", err)
+				continue
+			}
+			cfg.BootstrapNodes = append(cfg.BootstrapNodes, node)
+		}
+	}
+}
+
+// setBootstrapNodesV5 creates a list of bootstrap nodes from the command line
+// flags, reverting to pre-configured ones if none have been specified.
+func setBootstrapNodesV5(ctx *cli.Context, cfg *p2p.Config) {
+	urls := params.DiscoveryV5Bootnodes
+	switch {
+	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.RinkebyBootnodes
+	case ctx.GlobalBool(GoerliFlag.Name):
+		urls = params.GoerliBootnodes
+	case cfg.BootstrapNodesV5 != nil:
+		return // already set, don't apply defaults.
+	}
+
+	cfg.BootstrapNodesV5 = make([]*discv5.Node, 0, len(urls))
+	for _, url := range urls {
+		if url != "" {
+			node, err := discv5.ParseNode(url)
+			if err != nil {
+				log.Error("Bootstrap URL invalid", "enode", url, "err", err)
+				continue
+			}
+			cfg.BootstrapNodesV5 = append(cfg.BootstrapNodesV5, node)
+		}
+	}
+}
+
+// setListenAddress creates a TCP listening address string from set command
+// line flags.
+func setListenAddress(ctx *cli.Context, cfg *p2p.Config) {
+	if ctx.GlobalIsSet(ListenPortFlag.Name) {
+		cfg.ListenAddr = fmt.Sprintf(":%d", ctx.GlobalInt(ListenPortFlag.Name))
+	}
+}
+
+// setNAT creates a port mapper from command line flags.
+func setNAT(ctx *cli.Context, cfg *p2p.Config) {
+	if ctx.GlobalIsSet(NATFlag.Name) {
+		natif, err := nat.Parse(ctx.GlobalString(NATFlag.Name))
+		if err != nil {
+			Fatalf("Option %s: %v", NATFlag.Name, err)
+		}
+		cfg.NAT = natif
+	}
+}
+
+// splitAndTrim splits input separated by a comma
+// and trims excessive white space from the substrings.
+func splitAndTrim(input string) []string {
+	result := strings.Split(input, ",")
+	for i, r := range result {
+		result[i] = strings.TrimSpace(r)
+	}
+	return result
+}
+
+// setHTTP creates the HTTP RPC listener interface string from the set
+// command line flags, returning empty if the HTTP endpoint is disabled.
+func setHTTP(ctx *cli.Context, cfg *node.Config) {
+	if ctx.GlobalBool(RPCEnabledFlag.Name) && cfg.HTTPHost == "" {
+		cfg.HTTPHost = "127.0.0.1"
+		if ctx.GlobalIsSet(RPCListenAddrFlag.Name) {
+			cfg.HTTPHost = ctx.GlobalString(RPCListenAddrFlag.Name)
+		}
+	}
+	if ctx.GlobalIsSet(RPCPortFlag.Name) {
+		cfg.HTTPPort = ctx.GlobalInt(RPCPortFlag.Name)
+	}
+	if ctx.GlobalIsSet(RPCCORSDomainFlag.Name) {
+		cfg.HTTPCors = splitAndTrim(ctx.GlobalString(RPCCORSDomainFlag.Name))
+	}
+	if ctx.GlobalIsSet(RPCApiFlag.Name) {
+		cfg.HTTPModules = splitAndTrim(ctx.GlobalString(RPCApiFlag.Name))
+	}
+	if ctx.GlobalIsSet(RPCVirtualHostsFlag.Name) {
+		cfg.HTTPVirtualHosts = splitAndTrim(ctx.GlobalString(RPCVirtualHostsFlag.Name))
+	}
+}
+
+// setGraphQL creates the GraphQL listener interface string from the set
+// command line flags, returning empty if the GraphQL endpoint is disabled.
+func setGraphQL(ctx *cli.Context, cfg *node.Config) {
+	if ctx.GlobalBool(GraphQLEnabledFlag.Name) && cfg.GraphQLHost == "" {
+		cfg.GraphQLHost = "127.0.0.1"
+		if ctx.GlobalIsSet(GraphQLListenAddrFlag.Name) {
+			cfg.GraphQLHost = ctx.GlobalString(GraphQLListenAddrFlag.Name)
+		}
+	}
+	cfg.GraphQLPort = ctx.GlobalInt(GraphQLPortFlag.Name)
+	if ctx.GlobalIsSet(GraphQLCORSDomainFlag.Name) {
+		cfg.GraphQLCors = splitAndTrim(ctx.GlobalString(GraphQLCORSDomainFlag.Name))
+	}
+	if ctx.GlobalIsSet(GraphQLVirtualHostsFlag.Name) {
+		cfg.GraphQLVirtualHosts = splitAndTrim(ctx.GlobalString(GraphQLVirtualHostsFlag.Name))
+	}
+}
+
+// setWS creates the WebSocket RPC listener interface string from the set
+// command line flags, returning empty if the HTTP endpoint is disabled.
+func setWS(ctx *cli.Context, cfg *node.Config) {
+	if ctx.GlobalBool(WSEnabledFlag.Name) && cfg.WSHost == "" {
+		cfg.WSHost = "127.0.0.1"
+		if ctx.GlobalIsSet(WSListenAddrFlag.Name) {
+			cfg.WSHost = ctx.GlobalString(WSListenAddrFlag.Name)
+		}
+	}
+	if ctx.GlobalIsSet(WSPortFlag.Name) {
+		cfg.WSPort = ctx.GlobalInt(WSPortFlag.Name)
+	}
+	if ctx.GlobalIsSet(WSAllowedOriginsFlag.Name) {
+		cfg.WSOrigins = splitAndTrim(ctx.GlobalString(WSAllowedOriginsFlag.Name))
+	}
+	if ctx.GlobalIsSet(WSApiFlag.Name) {
+		cfg.WSModules = splitAndTrim(ctx.GlobalString(WSApiFlag.Name))
+	}
+}
+
+// setIPC creates an IPC path configuration from the set command line flags,
+// returning an empty string if IPC was explicitly disabled, or the set path.
+func setIPC(ctx *cli.Context, cfg *node.Config) {
+	CheckExclusive(ctx, IPCDisabledFlag, IPCPathFlag)
+	switch {
+	case ctx.GlobalBool(IPCDisabledFlag.Name):
+		cfg.IPCPath = ""
+	case ctx.GlobalIsSet(IPCPathFlag.Name):
+		cfg.IPCPath = ctx.GlobalString(IPCPathFlag.Name)
+	}
+}
+
+// setLes configures the les server and ultra light client settings from the command line flags.
+func setLes(ctx *cli.Context, cfg *eth.Config) {
+	if ctx.GlobalIsSet(LightLegacyServFlag.Name) {
+		cfg.LightServ = ctx.GlobalInt(LightLegacyServFlag.Name)
+	}
+	if ctx.GlobalIsSet(LightServeFlag.Name) {
+		cfg.LightServ = ctx.GlobalInt(LightServeFlag.Name)
+	}
+	if ctx.GlobalIsSet(LightIngressFlag.Name) {
+		cfg.LightIngress = ctx.GlobalInt(LightIngressFlag.Name)
+	}
+	if ctx.GlobalIsSet(LightEgressFlag.Name) {
+		cfg.LightEgress = ctx.GlobalInt(LightEgressFlag.Name)
+	}
+	if ctx.GlobalIsSet(LightLegacyPeersFlag.Name) {
+		cfg.LightPeers = ctx.GlobalInt(LightLegacyPeersFlag.Name)
+	}
+	if ctx.GlobalIsSet(LightMaxPeersFlag.Name) {
+		cfg.LightPeers = ctx.GlobalInt(LightMaxPeersFlag.Name)
+	}
+	if ctx.GlobalIsSet(UltraLightServersFlag.Name) {
+		cfg.UltraLightServers = strings.Split(ctx.GlobalString(UltraLightServersFlag.Name), ",")
+	}
+	if ctx.GlobalIsSet(UltraLightFractionFlag.Name) {
+		cfg.UltraLightFraction = ctx.GlobalInt(UltraLightFractionFlag.Name)
+	}
+	if cfg.UltraLightFraction <= 0 && cfg.UltraLightFraction > 100 {
+		log.Error("Ultra light fraction is invalid", "had", cfg.UltraLightFraction, "updated", eth.DefaultConfig.UltraLightFraction)
+		cfg.UltraLightFraction = eth.DefaultConfig.UltraLightFraction
+	}
+	if ctx.GlobalIsSet(UltraLightOnlyAnnounceFlag.Name) {
+		cfg.UltraLightOnlyAnnounce = ctx.GlobalBool(UltraLightOnlyAnnounceFlag.Name)
+	}
+}
+
+// makeDatabaseHandles raises out the number of allowed file handles per process
+// for Geth and returns half of the allowance to assign to the database.
+func makeDatabaseHandles() int {
+	limit, err := fdlimit.Maximum()
+	if err != nil {
+		Fatalf("Failed to retrieve file descriptor allowance: %v", err)
+	}
+	raised, err := fdlimit.Raise(uint64(limit))
+	if err != nil {
+		Fatalf("Failed to raise file descriptor allowance: %v", err)
+	}
+	return int(raised / 2) // Leave half for networking and other stuff
+}
+
+// MakeAddress converts an account specified directly as a hex encoded string or
+// a key index in the key store to an internal account representation.
+func MakeAddress(ks *keystore.KeyStore, account string) (accounts.Account, error) {
+	// If the specified account is a valid address, return it
+	if common.IsHexAddress(account) {
+		return accounts.Account{Address: common.HexToAddress(account)}, nil
+	}
+	// Otherwise try to interpret the account as a keystore index
+	index, err := strconv.Atoi(account)
+	if err != nil || index < 0 {
+		return accounts.Account{}, fmt.Errorf("invalid account address or index %q", account)
+	}
+	log.Warn("-------------------------------------------------------------------")
+	log.Warn("Referring to accounts by order in the keystore folder is dangerous!")
+	log.Warn("This functionality is deprecated and will be removed in the future!")
+	log.Warn("Please use explicit addresses! (can search via `geth account list`)")
+	log.Warn("-------------------------------------------------------------------")
+
+	accs := ks.Accounts()
+	if len(accs) <= index {
+		return accounts.Account{}, fmt.Errorf("index %d higher than number of accounts %d", index, len(accs))
+	}
+	return accs[index], nil
+}
+
+// setEtherbase retrieves the etherbase either from the directly specified
+// command line flags or from the keystore if CLI indexed.
+func setEtherbase(ctx *cli.Context, ks *keystore.KeyStore, cfg *eth.Config) {
+	// Extract the current etherbase, new flag overriding legacy one
+	var etherbase string
+	if ctx.GlobalIsSet(MinerLegacyEtherbaseFlag.Name) {
+		etherbase = ctx.GlobalString(MinerLegacyEtherbaseFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerEtherbaseFlag.Name) {
+		etherbase = ctx.GlobalString(MinerEtherbaseFlag.Name)
+	}
+	// Convert the etherbase into an address and configure it
+	if etherbase != "" {
+		if ks != nil {
+			account, err := MakeAddress(ks, etherbase)
+			if err != nil {
+				Fatalf("Invalid miner etherbase: %v", err)
+			}
+			cfg.Miner.Etherbase = account.Address
+		} else {
+			Fatalf("No etherbase configured")
+		}
+	}
+}
+
+// MakePasswordList reads password lines from the file specified by the global --password flag.
+func MakePasswordList(ctx *cli.Context) []string {
+	path := ctx.GlobalString(PasswordFileFlag.Name)
+	if path == "" {
+		return nil
+	}
+	text, err := ioutil.ReadFile(path)
+	if err != nil {
+		Fatalf("Failed to read password file: %v", err)
+	}
+	lines := strings.Split(string(text), "\n")
+	// Sanitise DOS line endings.
+	for i := range lines {
+		lines[i] = strings.TrimRight(lines[i], "\r")
+	}
+	return lines
+}
+
+func SetP2PConfig(ctx *cli.Context, cfg *p2p.Config) {
+	setNodeKey(ctx, cfg)
+	setNAT(ctx, cfg)
+	setListenAddress(ctx, cfg)
+	setBootstrapNodes(ctx, cfg)
+	setBootstrapNodesV5(ctx, cfg)
+
+	lightClient := ctx.GlobalString(SyncModeFlag.Name) == "light"
+	lightServer := (ctx.GlobalInt(LightLegacyServFlag.Name) != 0 || ctx.GlobalInt(LightServeFlag.Name) != 0)
+
+	lightPeers := ctx.GlobalInt(LightLegacyPeersFlag.Name)
+	if ctx.GlobalIsSet(LightMaxPeersFlag.Name) {
+		lightPeers = ctx.GlobalInt(LightMaxPeersFlag.Name)
+	}
+	if ctx.GlobalIsSet(MaxPeersFlag.Name) {
+		cfg.MaxPeers = ctx.GlobalInt(MaxPeersFlag.Name)
+		if lightServer && !ctx.GlobalIsSet(LightLegacyPeersFlag.Name) && !ctx.GlobalIsSet(LightMaxPeersFlag.Name) {
+			cfg.MaxPeers += lightPeers
+		}
+	} else {
+		if lightServer {
+			cfg.MaxPeers += lightPeers
+		}
+		if lightClient && (ctx.GlobalIsSet(LightLegacyPeersFlag.Name) || ctx.GlobalIsSet(LightMaxPeersFlag.Name)) && cfg.MaxPeers < lightPeers {
+			cfg.MaxPeers = lightPeers
+		}
+	}
+	if !(lightClient || lightServer) {
+		lightPeers = 0
+	}
+	ethPeers := cfg.MaxPeers - lightPeers
+	if lightClient {
+		ethPeers = 0
+	}
+	log.Info("Maximum peer count", "ETH", ethPeers, "LES", lightPeers, "total", cfg.MaxPeers)
+
+	if ctx.GlobalIsSet(MaxPendingPeersFlag.Name) {
+		cfg.MaxPendingPeers = ctx.GlobalInt(MaxPendingPeersFlag.Name)
+	}
+	if ctx.GlobalIsSet(NoDiscoverFlag.Name) || lightClient {
+		cfg.NoDiscovery = true
+	}
+
+	// if we're running a light client or server, force enable the v5 peer discovery
+	// unless it is explicitly disabled with --nodiscover note that explicitly specifying
+	// --v5disc overrides --nodiscover, in which case the later only disables v4 discovery
+	forceV5Discovery := (lightClient || lightServer) && !ctx.GlobalBool(NoDiscoverFlag.Name)
+	if ctx.GlobalIsSet(DiscoveryV5Flag.Name) {
+		cfg.DiscoveryV5 = ctx.GlobalBool(DiscoveryV5Flag.Name)
+	} else if forceV5Discovery {
+		cfg.DiscoveryV5 = true
+	}
+
+	if netrestrict := ctx.GlobalString(NetrestrictFlag.Name); netrestrict != "" {
+		list, err := netutil.ParseNetlist(netrestrict)
+		if err != nil {
+			Fatalf("Option %q: %v", NetrestrictFlag.Name, err)
+		}
+		cfg.NetRestrict = list
+	}
+
+	if ctx.GlobalBool(DeveloperFlag.Name) {
+		// --dev mode can't use p2p networking.
+		cfg.MaxPeers = 0
+		cfg.ListenAddr = ":0"
+		cfg.NoDiscovery = true
+		cfg.DiscoveryV5 = false
+	}
+}
+
+// SetNodeConfig applies node-related command line flags to the config.
+func SetNodeConfig(ctx *cli.Context, cfg *node.Config) {
+	SetP2PConfig(ctx, &cfg.P2P)
+	setIPC(ctx, cfg)
+	setHTTP(ctx, cfg)
+	setGraphQL(ctx, cfg)
+	setWS(ctx, cfg)
+	setNodeUserIdent(ctx, cfg)
+	setDataDir(ctx, cfg)
+	setSmartCard(ctx, cfg)
+
+	if ctx.GlobalIsSet(ExternalSignerFlag.Name) {
+		cfg.ExternalSigner = ctx.GlobalString(ExternalSignerFlag.Name)
+	}
+
+	if ctx.GlobalIsSet(KeyStoreDirFlag.Name) {
+		cfg.KeyStoreDir = ctx.GlobalString(KeyStoreDirFlag.Name)
+	}
+	if ctx.GlobalIsSet(LightKDFFlag.Name) {
+		cfg.UseLightweightKDF = ctx.GlobalBool(LightKDFFlag.Name)
+	}
+	if ctx.GlobalIsSet(NoUSBFlag.Name) {
+		cfg.NoUSB = ctx.GlobalBool(NoUSBFlag.Name)
+	}
+	if ctx.GlobalIsSet(InsecureUnlockAllowedFlag.Name) {
+		cfg.InsecureUnlockAllowed = ctx.GlobalBool(InsecureUnlockAllowedFlag.Name)
+	}
+}
+
+func setSmartCard(ctx *cli.Context, cfg *node.Config) {
+	// Skip enabling smartcards if no path is set
+	path := ctx.GlobalString(SmartCardDaemonPathFlag.Name)
+	if path == "" {
+		return
+	}
+	// Sanity check that the smartcard path is valid
+	fi, err := os.Stat(path)
+	if err != nil {
+		log.Info("Smartcard socket not found, disabling", "err", err)
+		return
+	}
+	if fi.Mode()&os.ModeType != os.ModeSocket {
+		log.Error("Invalid smartcard daemon path", "path", path, "type", fi.Mode().String())
+		return
+	}
+	// Smartcard daemon path exists and is a socket, enable it
+	cfg.SmartCardDaemonPath = path
+}
+
+func setDataDir(ctx *cli.Context, cfg *node.Config) {
+	switch {
+	case ctx.GlobalIsSet(DataDirFlag.Name):
+		cfg.DataDir = ctx.GlobalString(DataDirFlag.Name)
+	case ctx.GlobalBool(DeveloperFlag.Name):
+		cfg.DataDir = "" // unless explicitly requested, use memory databases
+	case ctx.GlobalBool(TestnetFlag.Name) && cfg.DataDir == node.DefaultDataDir():
+		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "testnet")
+	case ctx.GlobalBool(RinkebyFlag.Name) && cfg.DataDir == node.DefaultDataDir():
+		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "rinkeby")
+	case ctx.GlobalBool(GoerliFlag.Name) && cfg.DataDir == node.DefaultDataDir():
+		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "goerli")
+	}
+}
+
+func setGPO(ctx *cli.Context, cfg *gasprice.Config) {
+	if ctx.GlobalIsSet(GpoBlocksFlag.Name) {
+		cfg.Blocks = ctx.GlobalInt(GpoBlocksFlag.Name)
+	}
+	if ctx.GlobalIsSet(GpoPercentileFlag.Name) {
+		cfg.Percentile = ctx.GlobalInt(GpoPercentileFlag.Name)
+	}
+}
+
+func setTxPool(ctx *cli.Context, cfg *core.TxPoolConfig) {
+	if ctx.GlobalIsSet(TxPoolLocalsFlag.Name) {
+		locals := strings.Split(ctx.GlobalString(TxPoolLocalsFlag.Name), ",")
+		for _, account := range locals {
+			if trimmed := strings.TrimSpace(account); !common.IsHexAddress(trimmed) {
+				Fatalf("Invalid account in --txpool.locals: %s", trimmed)
+			} else {
+				cfg.Locals = append(cfg.Locals, common.HexToAddress(account))
+			}
+		}
+	}
+	if ctx.GlobalIsSet(TxPoolNoLocalsFlag.Name) {
+		cfg.NoLocals = ctx.GlobalBool(TxPoolNoLocalsFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolJournalFlag.Name) {
+		cfg.Journal = ctx.GlobalString(TxPoolJournalFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolRejournalFlag.Name) {
+		cfg.Rejournal = ctx.GlobalDuration(TxPoolRejournalFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolPriceLimitFlag.Name) {
+		cfg.PriceLimit = ctx.GlobalUint64(TxPoolPriceLimitFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolPriceBumpFlag.Name) {
+		cfg.PriceBump = ctx.GlobalUint64(TxPoolPriceBumpFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolAccountSlotsFlag.Name) {
+		cfg.AccountSlots = ctx.GlobalUint64(TxPoolAccountSlotsFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolGlobalSlotsFlag.Name) {
+		cfg.GlobalSlots = ctx.GlobalUint64(TxPoolGlobalSlotsFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolAccountQueueFlag.Name) {
+		cfg.AccountQueue = ctx.GlobalUint64(TxPoolAccountQueueFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolGlobalQueueFlag.Name) {
+		cfg.GlobalQueue = ctx.GlobalUint64(TxPoolGlobalQueueFlag.Name)
+	}
+	if ctx.GlobalIsSet(TxPoolLifetimeFlag.Name) {
+		cfg.Lifetime = ctx.GlobalDuration(TxPoolLifetimeFlag.Name)
+	}
+}
+
+func setEthash(ctx *cli.Context, cfg *eth.Config) {
+	if ctx.GlobalIsSet(EthashCacheDirFlag.Name) {
+		cfg.Ethash.CacheDir = ctx.GlobalString(EthashCacheDirFlag.Name)
+	}
+	if ctx.GlobalIsSet(EthashDatasetDirFlag.Name) {
+		cfg.Ethash.DatasetDir = ctx.GlobalString(EthashDatasetDirFlag.Name)
+	}
+	if ctx.GlobalIsSet(EthashCachesInMemoryFlag.Name) {
+		cfg.Ethash.CachesInMem = ctx.GlobalInt(EthashCachesInMemoryFlag.Name)
+	}
+	if ctx.GlobalIsSet(EthashCachesOnDiskFlag.Name) {
+		cfg.Ethash.CachesOnDisk = ctx.GlobalInt(EthashCachesOnDiskFlag.Name)
+	}
+	if ctx.GlobalIsSet(EthashDatasetsInMemoryFlag.Name) {
+		cfg.Ethash.DatasetsInMem = ctx.GlobalInt(EthashDatasetsInMemoryFlag.Name)
+	}
+	if ctx.GlobalIsSet(EthashDatasetsOnDiskFlag.Name) {
+		cfg.Ethash.DatasetsOnDisk = ctx.GlobalInt(EthashDatasetsOnDiskFlag.Name)
+	}
+}
+
+func setMiner(ctx *cli.Context, cfg *miner.Config) {
+	if ctx.GlobalIsSet(MinerNotifyFlag.Name) {
+		cfg.Notify = strings.Split(ctx.GlobalString(MinerNotifyFlag.Name), ",")
+	}
+	if ctx.GlobalIsSet(MinerLegacyExtraDataFlag.Name) {
+		cfg.ExtraData = []byte(ctx.GlobalString(MinerLegacyExtraDataFlag.Name))
+	}
+	if ctx.GlobalIsSet(MinerExtraDataFlag.Name) {
+		cfg.ExtraData = []byte(ctx.GlobalString(MinerExtraDataFlag.Name))
+	}
+	if ctx.GlobalIsSet(MinerLegacyGasTargetFlag.Name) {
+		cfg.GasFloor = ctx.GlobalUint64(MinerLegacyGasTargetFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerGasTargetFlag.Name) {
+		cfg.GasFloor = ctx.GlobalUint64(MinerGasTargetFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerGasLimitFlag.Name) {
+		cfg.GasCeil = ctx.GlobalUint64(MinerGasLimitFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerLegacyGasPriceFlag.Name) {
+		cfg.GasPrice = GlobalBig(ctx, MinerLegacyGasPriceFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerGasPriceFlag.Name) {
+		cfg.GasPrice = GlobalBig(ctx, MinerGasPriceFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerRecommitIntervalFlag.Name) {
+		cfg.Recommit = ctx.Duration(MinerRecommitIntervalFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerNoVerfiyFlag.Name) {
+		cfg.Noverify = ctx.Bool(MinerNoVerfiyFlag.Name)
+	}
+}
+
+func setWhitelist(ctx *cli.Context, cfg *eth.Config) {
+	whitelist := ctx.GlobalString(WhitelistFlag.Name)
+	if whitelist == "" {
+		return
+	}
+	cfg.Whitelist = make(map[uint64]common.Hash)
+	for _, entry := range strings.Split(whitelist, ",") {
+		parts := strings.Split(entry, "=")
+		if len(parts) != 2 {
+			Fatalf("Invalid whitelist entry: %s", entry)
+		}
+		number, err := strconv.ParseUint(parts[0], 0, 64)
+		if err != nil {
+			Fatalf("Invalid whitelist block number %s: %v", parts[0], err)
+		}
+		var hash common.Hash
+		if err = hash.UnmarshalText([]byte(parts[1])); err != nil {
+			Fatalf("Invalid whitelist hash %s: %v", parts[1], err)
+		}
+		cfg.Whitelist[number] = hash
+	}
+}
+
+// CheckExclusive verifies that only a single instance of the provided flags was
+// set by the user. Each flag might optionally be followed by a string type to
+// specialize it further.
+func CheckExclusive(ctx *cli.Context, args ...interface{}) {
+	set := make([]string, 0, 1)
+	for i := 0; i < len(args); i++ {
+		// Make sure the next argument is a flag and skip if not set
+		flag, ok := args[i].(cli.Flag)
+		if !ok {
+			panic(fmt.Sprintf("invalid argument, not cli.Flag type: %T", args[i]))
+		}
+		// Check if next arg extends current and expand its name if so
+		name := flag.GetName()
+
+		if i+1 < len(args) {
+			switch option := args[i+1].(type) {
+			case string:
+				// Extended flag check, make sure value set doesn't conflict with passed in option
+				if ctx.GlobalString(flag.GetName()) == option {
+					name += "=" + option
+					set = append(set, "--"+name)
+				}
+				// shift arguments and continue
+				i++
+				continue
+
+			case cli.Flag:
+			default:
+				panic(fmt.Sprintf("invalid argument, not cli.Flag or string extension: %T", args[i+1]))
+			}
+		}
+		// Mark the flag if it's set
+		if ctx.GlobalIsSet(flag.GetName()) {
+			set = append(set, "--"+name)
+		}
+	}
+	if len(set) > 1 {
+		Fatalf("Flags %v can't be used at the same time", strings.Join(set, ", "))
+	}
+}
+
+// SetShhConfig applies shh-related command line flags to the config.
+func SetShhConfig(ctx *cli.Context, stack *node.Node, cfg *whisper.Config) {
+	if ctx.GlobalIsSet(WhisperMaxMessageSizeFlag.Name) {
+		cfg.MaxMessageSize = uint32(ctx.GlobalUint(WhisperMaxMessageSizeFlag.Name))
+	}
+	if ctx.GlobalIsSet(WhisperMinPOWFlag.Name) {
+		cfg.MinimumAcceptedPOW = ctx.GlobalFloat64(WhisperMinPOWFlag.Name)
+	}
+	if ctx.GlobalIsSet(WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
+		cfg.RestrictConnectionBetweenLightClients = true
+	}
+}
+
+// SetEthConfig applies eth-related command line flags to the config.
+func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
+	// Avoid conflicting network flags
+	CheckExclusive(ctx, DeveloperFlag, TestnetFlag, RinkebyFlag, GoerliFlag)
+	CheckExclusive(ctx, LightLegacyServFlag, LightServeFlag, SyncModeFlag, "light")
+	CheckExclusive(ctx, DeveloperFlag, ExternalSignerFlag) // Can't use both ephemeral unlocked and external signer
+
+	var ks *keystore.KeyStore
+	if keystores := stack.AccountManager().Backends(keystore.KeyStoreType); len(keystores) > 0 {
+		ks = keystores[0].(*keystore.KeyStore)
+	}
+	setEtherbase(ctx, ks, cfg)
+	setGPO(ctx, &cfg.GPO)
+	setTxPool(ctx, &cfg.TxPool)
+	setEthash(ctx, cfg)
+	setMiner(ctx, &cfg.Miner)
+	setWhitelist(ctx, cfg)
+	setLes(ctx, cfg)
+
+	if ctx.GlobalIsSet(SyncModeFlag.Name) {
+		cfg.SyncMode = *GlobalTextMarshaler(ctx, SyncModeFlag.Name).(*downloader.SyncMode)
+	}
+	if ctx.GlobalIsSet(NetworkIdFlag.Name) {
+		cfg.NetworkId = ctx.GlobalUint64(NetworkIdFlag.Name)
+	}
+	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheDatabaseFlag.Name) {
+		cfg.DatabaseCache = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheDatabaseFlag.Name) / 100
+	}
+	cfg.DatabaseHandles = makeDatabaseHandles()
+	if ctx.GlobalIsSet(AncientFlag.Name) {
+		cfg.DatabaseFreezer = ctx.GlobalString(AncientFlag.Name)
+	}
+
+	if gcmode := ctx.GlobalString(GCModeFlag.Name); gcmode != "full" && gcmode != "archive" {
+		Fatalf("--%s must be either 'full' or 'archive'", GCModeFlag.Name)
+	}
+	cfg.NoPruning = ctx.GlobalString(GCModeFlag.Name) == "archive"
+	cfg.NoPrefetch = ctx.GlobalBool(CacheNoPrefetchFlag.Name)
+
+	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheTrieFlag.Name) {
+		cfg.TrieCleanCache = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheTrieFlag.Name) / 100
+	}
+	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheGCFlag.Name) {
+		cfg.TrieDirtyCache = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheGCFlag.Name) / 100
+	}
+	if ctx.GlobalIsSet(DocRootFlag.Name) {
+		cfg.DocRoot = ctx.GlobalString(DocRootFlag.Name)
+	}
+	if ctx.GlobalIsSet(VMEnableDebugFlag.Name) {
+		// TODO(fjl): force-enable this in --dev mode
+		cfg.EnablePreimageRecording = ctx.GlobalBool(VMEnableDebugFlag.Name)
+	}
+
+	if ctx.GlobalIsSet(EWASMInterpreterFlag.Name) {
+		cfg.EWASMInterpreter = ctx.GlobalString(EWASMInterpreterFlag.Name)
+	}
+
+	if ctx.GlobalIsSet(EVMInterpreterFlag.Name) {
+		cfg.EVMInterpreter = ctx.GlobalString(EVMInterpreterFlag.Name)
+	}
+	if ctx.GlobalIsSet(RPCGlobalGasCap.Name) {
+		cfg.RPCGasCap = new(big.Int).SetUint64(ctx.GlobalUint64(RPCGlobalGasCap.Name))
+	}
+
+	// Override any default configs for hard coded networks.
+	switch {
+	case ctx.GlobalBool(TestnetFlag.Name):
+		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
+			cfg.NetworkId = 3
+		}
+		cfg.Genesis = core.DefaultTestnetGenesisBlock()
+	case ctx.GlobalBool(RinkebyFlag.Name):
+		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
+			cfg.NetworkId = 4
+		}
+		cfg.Genesis = core.DefaultRinkebyGenesisBlock()
+	case ctx.GlobalBool(GoerliFlag.Name):
+		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
+			cfg.NetworkId = 5
+		}
+		cfg.Genesis = core.DefaultGoerliGenesisBlock()
+	case ctx.GlobalBool(DeveloperFlag.Name):
+		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
+			cfg.NetworkId = 1337
+		}
+		// Create new developer account or reuse existing one
+		var (
+			developer accounts.Account
+			err       error
+		)
+		if accs := ks.Accounts(); len(accs) > 0 {
+			developer = ks.Accounts()[0]
+		} else {
+			developer, err = ks.NewAccount("")
+			if err != nil {
+				Fatalf("Failed to create developer account: %v", err)
+			}
+		}
+		if err := ks.Unlock(developer, ""); err != nil {
+			Fatalf("Failed to unlock developer account: %v", err)
+		}
+		log.Info("Using developer account", "address", developer.Address)
+
+		cfg.Genesis = core.DeveloperGenesisBlock(uint64(ctx.GlobalInt(DeveloperPeriodFlag.Name)), developer.Address)
+		if !ctx.GlobalIsSet(MinerGasPriceFlag.Name) && !ctx.GlobalIsSet(MinerLegacyGasPriceFlag.Name) {
+			cfg.Miner.GasPrice = big.NewInt(1)
+		}
+	}
+}
+
+// SetDashboardConfig applies dashboard related command line flags to the config.
+func SetDashboardConfig(ctx *cli.Context, cfg *dashboard.Config) {
+	cfg.Host = ctx.GlobalString(DashboardAddrFlag.Name)
+	cfg.Port = ctx.GlobalInt(DashboardPortFlag.Name)
+	cfg.Refresh = ctx.GlobalDuration(DashboardRefreshFlag.Name)
+}
+
+// RegisterEthService adds an Ethereum client to the stack.
+func RegisterEthService(stack *node.Node, cfg *eth.Config) {
+	var err error
+	if cfg.SyncMode == downloader.LightSync {
+		err = stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+			return les.New(ctx, cfg)
+		})
+	} else {
+		err = stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+			fullNode, err := eth.New(ctx, cfg)
+			if fullNode != nil && cfg.LightServ > 0 {
+				ls, _ := les.NewLesServer(fullNode, cfg)
+				fullNode.AddLesServer(ls)
+			}
+			return fullNode, err
+		})
+	}
+	if err != nil {
+		Fatalf("Failed to register the Ethereum service: %v", err)
+	}
+}
+
+// RegisterDashboardService adds a dashboard to the stack.
+func RegisterDashboardService(stack *node.Node, cfg *dashboard.Config, commit string) {
+	stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+		return dashboard.New(cfg, commit, ctx.ResolvePath("logs")), nil
+	})
+}
+
+// RegisterShhService configures Whisper and adds it to the given node.
+func RegisterShhService(stack *node.Node, cfg *whisper.Config) {
+	if err := stack.Register(func(n *node.ServiceContext) (node.Service, error) {
+		return whisper.New(cfg), nil
+	}); err != nil {
+		Fatalf("Failed to register the Whisper service: %v", err)
+	}
+}
+
+// RegisterEthStatsService configures the Ethereum Stats daemon and adds it to
+// the given node.
+func RegisterEthStatsService(stack *node.Node, url string) {
+	if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+		// Retrieve both eth and les services
+		var ethServ *eth.Ethereum
+		ctx.Service(&ethServ)
+
+		var lesServ *les.LightEthereum
+		ctx.Service(&lesServ)
+
+		// Let ethstats use whichever is not nil
+		return ethstats.New(url, ethServ, lesServ)
+	}); err != nil {
+		Fatalf("Failed to register the Ethereum Stats service: %v", err)
+	}
+}
+
+// RegisterGraphQLService is a utility function to construct a new service and register it against a node.
+func RegisterGraphQLService(stack *node.Node, endpoint string, cors, vhosts []string, timeouts rpc.HTTPTimeouts) {
+	if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+		// Try to construct the GraphQL service backed by a full node
+		var ethServ *eth.Ethereum
+		if err := ctx.Service(&ethServ); err == nil {
+			return graphql.New(ethServ.APIBackend, endpoint, cors, vhosts, timeouts)
+		}
+		// Try to construct the GraphQL service backed by a light node
+		var lesServ *les.LightEthereum
+		if err := ctx.Service(&lesServ); err == nil {
+			return graphql.New(lesServ.ApiBackend, endpoint, cors, vhosts, timeouts)
+		}
+		// Well, this should not have happened, bail out
+		return nil, errors.New("no Ethereum service")
+	}); err != nil {
+		Fatalf("Failed to register the GraphQL service: %v", err)
+	}
+}
+
+func SetupMetrics(ctx *cli.Context) {
+	if metrics.Enabled {
+		log.Info("Enabling metrics collection")
+		var (
+			enableExport = ctx.GlobalBool(MetricsEnableInfluxDBFlag.Name)
+			endpoint     = ctx.GlobalString(MetricsInfluxDBEndpointFlag.Name)
+			database     = ctx.GlobalString(MetricsInfluxDBDatabaseFlag.Name)
+			username     = ctx.GlobalString(MetricsInfluxDBUsernameFlag.Name)
+			password     = ctx.GlobalString(MetricsInfluxDBPasswordFlag.Name)
+		)
+
+		if enableExport {
+			tagsMap := SplitTagsFlag(ctx.GlobalString(MetricsInfluxDBTagsFlag.Name))
+
+			log.Info("Enabling metrics export to InfluxDB")
+
+			go influxdb.InfluxDBWithTags(metrics.DefaultRegistry, 10*time.Second, endpoint, database, username, password, "geth.", tagsMap)
+		}
+	}
+}
+
+func SplitTagsFlag(tagsFlag string) map[string]string {
+	tags := strings.Split(tagsFlag, ",")
+	tagsMap := map[string]string{}
+
+	for _, t := range tags {
+		if t != "" {
+			kv := strings.Split(t, "=")
+
+			if len(kv) == 2 {
+				tagsMap[kv[0]] = kv[1]
+			}
+		}
+	}
+
+	return tagsMap
+}
+
+// MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails.
+func MakeChainDatabase(ctx *cli.Context, stack *node.Node) ethdb.Database {
+	var (
+		cache   = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheDatabaseFlag.Name) / 100
+		handles = makeDatabaseHandles()
+	)
+	name := "chaindata"
+	if ctx.GlobalString(SyncModeFlag.Name) == "light" {
+		name = "lightchaindata"
+	}
+	chainDb, err := stack.OpenDatabaseWithFreezer(name, cache, handles, ctx.GlobalString(AncientFlag.Name), "")
+	if err != nil {
+		Fatalf("Could not open database: %v", err)
+	}
+	return chainDb
+}
+
+func MakeGenesis(ctx *cli.Context) *core.Genesis {
+	var genesis *core.Genesis
+	switch {
+	case ctx.GlobalBool(TestnetFlag.Name):
+		genesis = core.DefaultTestnetGenesisBlock()
+	case ctx.GlobalBool(RinkebyFlag.Name):
+		genesis = core.DefaultRinkebyGenesisBlock()
+	case ctx.GlobalBool(GoerliFlag.Name):
+		genesis = core.DefaultGoerliGenesisBlock()
+	case ctx.GlobalBool(DeveloperFlag.Name):
+		Fatalf("Developer chains are ephemeral")
+	}
+	return genesis
+}
+
+// MakeChain creates a chain manager from set command line flags.
+func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chainDb ethdb.Database) {
+	var err error
+	chainDb = MakeChainDatabase(ctx, stack)
+	config, _, err := core.SetupGenesisBlock(chainDb, MakeGenesis(ctx))
+	if err != nil {
+		Fatalf("%v", err)
+	}
+	var engine consensus.Engine
+	if config.Clique != nil {
+		engine = clique.New(config.Clique, chainDb)
+	} else {
+		engine = ethash.NewFaker()
+		if !ctx.GlobalBool(FakePoWFlag.Name) {
+			engine = ethash.New(ethash.Config{
+				CacheDir:       stack.ResolvePath(eth.DefaultConfig.Ethash.CacheDir),
+				CachesInMem:    eth.DefaultConfig.Ethash.CachesInMem,
+				CachesOnDisk:   eth.DefaultConfig.Ethash.CachesOnDisk,
+				DatasetDir:     stack.ResolvePath(eth.DefaultConfig.Ethash.DatasetDir),
+				DatasetsInMem:  eth.DefaultConfig.Ethash.DatasetsInMem,
+				DatasetsOnDisk: eth.DefaultConfig.Ethash.DatasetsOnDisk,
+			}, nil, false)
+		}
+	}
+	if gcmode := ctx.GlobalString(GCModeFlag.Name); gcmode != "full" && gcmode != "archive" {
+		Fatalf("--%s must be either 'full' or 'archive'", GCModeFlag.Name)
+	}
+	cache := &core.CacheConfig{
+		TrieCleanLimit:      eth.DefaultConfig.TrieCleanCache,
+		TrieCleanNoPrefetch: ctx.GlobalBool(CacheNoPrefetchFlag.Name),
+		TrieDirtyLimit:      eth.DefaultConfig.TrieDirtyCache,
+		TrieDirtyDisabled:   ctx.GlobalString(GCModeFlag.Name) == "archive",
+		TrieTimeLimit:       eth.DefaultConfig.TrieTimeout,
+	}
+	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheTrieFlag.Name) {
+		cache.TrieCleanLimit = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheTrieFlag.Name) / 100
+	}
+	if ctx.GlobalIsSet(CacheFlag.Name) || ctx.GlobalIsSet(CacheGCFlag.Name) {
+		cache.TrieDirtyLimit = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheGCFlag.Name) / 100
+	}
+	vmcfg := vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}
+	chain, err = core.NewBlockChain(chainDb, cache, config, engine, vmcfg, nil)
+	if err != nil {
+		Fatalf("Can't create BlockChain: %v", err)
+	}
+	return chain, chainDb
+}
+
+// MakeConsolePreloads retrieves the absolute paths for the console JavaScript
+// scripts to preload before starting.
+func MakeConsolePreloads(ctx *cli.Context) []string {
+	// Skip preloading if there's nothing to preload
+	if ctx.GlobalString(PreloadJSFlag.Name) == "" {
+		return nil
+	}
+	// Otherwise resolve absolute paths and return them
+	var preloads []string
+
+	assets := ctx.GlobalString(JSpathFlag.Name)
+	for _, file := range strings.Split(ctx.GlobalString(PreloadJSFlag.Name), ",") {
+		preloads = append(preloads, common.AbsolutePath(assets, strings.TrimSpace(file)))
+	}
+	return preloads
+}
+
+// MigrateFlags sets the global flag from a local flag when it's set.
+// This is a temporary function used for migrating old command/flags to the
+// new format.
+//
+// e.g. geth account new --keystore /tmp/mykeystore --lightkdf
+//
+// is equivalent after calling this method with:
+//
+// geth --keystore /tmp/mykeystore --lightkdf account new
+//
+// This allows the use of the existing configuration functionality.
+// When all flags are migrated this function can be removed and the existing
+// configuration functionality must be changed that is uses local flags
+func MigrateFlags(action func(ctx *cli.Context) error) func(*cli.Context) error {
+	return func(ctx *cli.Context) error {
+		for _, name := range ctx.FlagNames() {
+			if ctx.IsSet(name) {
+				ctx.GlobalSet(name, ctx.String(name))
+			}
+		}
+		return action(ctx)
+	}
+}
diff --git a/coreth.go b/coreth.go
index 74aabcb..5c739c1 100644
--- a/coreth.go
+++ b/coreth.go
@@ -46,6 +46,7 @@ func NewETHChain(config *eth.Config, etherBase *common.Address) *ETHChain {
 }
 
 func (self *ETHChain) Start() {
+    //utils.StartNode(stack)
     self.backend.StartMining(0)
 }
 
diff --git a/eth/backend.go b/eth/backend.go
index dd91405..b5f590e 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -509,10 +509,10 @@ func (s *Ethereum) Stop() error {
 	s.bloomIndexer.Close()
 	s.blockchain.Stop()
 	s.engine.Close()
-	s.protocolManager.Stop()
-	if s.lesServer != nil {
-		s.lesServer.Stop()
-	}
+	//s.protocolManager.Stop()
+	//if s.lesServer != nil {
+	//	s.lesServer.Stop()
+	//}
 	s.txPool.Stop()
 	s.miner.Stop()
 	s.eventMux.Stop()
diff --git a/internal/debug/api.go b/internal/debug/api.go
new file mode 100644
index 0000000..86a4218
--- /dev/null
+++ b/internal/debug/api.go
@@ -0,0 +1,236 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Package debug interfaces Go runtime debugging facilities.
+// This package is mostly glue code making these facilities available
+// through the CLI and RPC subsystem. If you want to use them from Go code,
+// use package runtime instead.
+package debug
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"os"
+	"os/user"
+	"path/filepath"
+	"runtime"
+	"runtime/debug"
+	"runtime/pprof"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/ethereum/go-ethereum/log"
+)
+
+// Handler is the global debugging handler.
+var Handler = new(HandlerT)
+
+// HandlerT implements the debugging API.
+// Do not create values of this type, use the one
+// in the Handler variable instead.
+type HandlerT struct {
+	mu        sync.Mutex
+	cpuW      io.WriteCloser
+	cpuFile   string
+	traceW    io.WriteCloser
+	traceFile string
+}
+
+// Verbosity sets the log verbosity ceiling. The verbosity of individual packages
+// and source files can be raised using Vmodule.
+func (*HandlerT) Verbosity(level int) {
+	glogger.Verbosity(log.Lvl(level))
+}
+
+// Vmodule sets the log verbosity pattern. See package log for details on the
+// pattern syntax.
+func (*HandlerT) Vmodule(pattern string) error {
+	return glogger.Vmodule(pattern)
+}
+
+// BacktraceAt sets the log backtrace location. See package log for details on
+// the pattern syntax.
+func (*HandlerT) BacktraceAt(location string) error {
+	return glogger.BacktraceAt(location)
+}
+
+// MemStats returns detailed runtime memory statistics.
+func (*HandlerT) MemStats() *runtime.MemStats {
+	s := new(runtime.MemStats)
+	runtime.ReadMemStats(s)
+	return s
+}
+
+// GcStats returns GC statistics.
+func (*HandlerT) GcStats() *debug.GCStats {
+	s := new(debug.GCStats)
+	debug.ReadGCStats(s)
+	return s
+}
+
+// CpuProfile turns on CPU profiling for nsec seconds and writes
+// profile data to file.
+func (h *HandlerT) CpuProfile(file string, nsec uint) error {
+	if err := h.StartCPUProfile(file); err != nil {
+		return err
+	}
+	time.Sleep(time.Duration(nsec) * time.Second)
+	h.StopCPUProfile()
+	return nil
+}
+
+// StartCPUProfile turns on CPU profiling, writing to the given file.
+func (h *HandlerT) StartCPUProfile(file string) error {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	if h.cpuW != nil {
+		return errors.New("CPU profiling already in progress")
+	}
+	f, err := os.Create(expandHome(file))
+	if err != nil {
+		return err
+	}
+	if err := pprof.StartCPUProfile(f); err != nil {
+		f.Close()
+		return err
+	}
+	h.cpuW = f
+	h.cpuFile = file
+	log.Info("CPU profiling started", "dump", h.cpuFile)
+	return nil
+}
+
+// StopCPUProfile stops an ongoing CPU profile.
+func (h *HandlerT) StopCPUProfile() error {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	pprof.StopCPUProfile()
+	if h.cpuW == nil {
+		return errors.New("CPU profiling not in progress")
+	}
+	log.Info("Done writing CPU profile", "dump", h.cpuFile)
+	h.cpuW.Close()
+	h.cpuW = nil
+	h.cpuFile = ""
+	return nil
+}
+
+// GoTrace turns on tracing for nsec seconds and writes
+// trace data to file.
+func (h *HandlerT) GoTrace(file string, nsec uint) error {
+	if err := h.StartGoTrace(file); err != nil {
+		return err
+	}
+	time.Sleep(time.Duration(nsec) * time.Second)
+	h.StopGoTrace()
+	return nil
+}
+
+// BlockProfile turns on goroutine profiling for nsec seconds and writes profile data to
+// file. It uses a profile rate of 1 for most accurate information. If a different rate is
+// desired, set the rate and write the profile manually.
+func (*HandlerT) BlockProfile(file string, nsec uint) error {
+	runtime.SetBlockProfileRate(1)
+	time.Sleep(time.Duration(nsec) * time.Second)
+	defer runtime.SetBlockProfileRate(0)
+	return writeProfile("block", file)
+}
+
+// SetBlockProfileRate sets the rate of goroutine block profile data collection.
+// rate 0 disables block profiling.
+func (*HandlerT) SetBlockProfileRate(rate int) {
+	runtime.SetBlockProfileRate(rate)
+}
+
+// WriteBlockProfile writes a goroutine blocking profile to the given file.
+func (*HandlerT) WriteBlockProfile(file string) error {
+	return writeProfile("block", file)
+}
+
+// MutexProfile turns on mutex profiling for nsec seconds and writes profile data to file.
+// It uses a profile rate of 1 for most accurate information. If a different rate is
+// desired, set the rate and write the profile manually.
+func (*HandlerT) MutexProfile(file string, nsec uint) error {
+	runtime.SetMutexProfileFraction(1)
+	time.Sleep(time.Duration(nsec) * time.Second)
+	defer runtime.SetMutexProfileFraction(0)
+	return writeProfile("mutex", file)
+}
+
+// SetMutexProfileFraction sets the rate of mutex profiling.
+func (*HandlerT) SetMutexProfileFraction(rate int) {
+	runtime.SetMutexProfileFraction(rate)
+}
+
+// WriteMutexProfile writes a goroutine blocking profile to the given file.
+func (*HandlerT) WriteMutexProfile(file string) error {
+	return writeProfile("mutex", file)
+}
+
+// WriteMemProfile writes an allocation profile to the given file.
+// Note that the profiling rate cannot be set through the API,
+// it must be set on the command line.
+func (*HandlerT) WriteMemProfile(file string) error {
+	return writeProfile("heap", file)
+}
+
+// Stacks returns a printed representation of the stacks of all goroutines.
+func (*HandlerT) Stacks() string {
+	buf := new(bytes.Buffer)
+	pprof.Lookup("goroutine").WriteTo(buf, 2)
+	return buf.String()
+}
+
+// FreeOSMemory returns unused memory to the OS.
+func (*HandlerT) FreeOSMemory() {
+	debug.FreeOSMemory()
+}
+
+// SetGCPercent sets the garbage collection target percentage. It returns the previous
+// setting. A negative value disables GC.
+func (*HandlerT) SetGCPercent(v int) int {
+	return debug.SetGCPercent(v)
+}
+
+func writeProfile(name, file string) error {
+	p := pprof.Lookup(name)
+	log.Info("Writing profile records", "count", p.Count(), "type", name, "dump", file)
+	f, err := os.Create(expandHome(file))
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return p.WriteTo(f, 0)
+}
+
+// expands home directory in file paths.
+// ~someuser/tmp will not be expanded.
+func expandHome(p string) string {
+	if strings.HasPrefix(p, "~/") || strings.HasPrefix(p, "~\\") {
+		home := os.Getenv("HOME")
+		if home == "" {
+			if usr, err := user.Current(); err == nil {
+				home = usr.HomeDir
+			}
+		}
+		if home != "" {
+			p = home + p[1:]
+		}
+	}
+	return filepath.Clean(p)
+}
diff --git a/internal/debug/flags.go b/internal/debug/flags.go
new file mode 100644
index 0000000..46c8fe9
--- /dev/null
+++ b/internal/debug/flags.go
@@ -0,0 +1,174 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package debug
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	_ "net/http/pprof"
+	"os"
+	"runtime"
+
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/metrics/exp"
+	"github.com/fjl/memsize/memsizeui"
+	colorable "github.com/mattn/go-colorable"
+	"github.com/mattn/go-isatty"
+	"gopkg.in/urfave/cli.v1"
+)
+
+var Memsize memsizeui.Handler
+
+var (
+	verbosityFlag = cli.IntFlag{
+		Name:  "verbosity",
+		Usage: "Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail",
+		Value: 3,
+	}
+	vmoduleFlag = cli.StringFlag{
+		Name:  "vmodule",
+		Usage: "Per-module verbosity: comma-separated list of <pattern>=<level> (e.g. eth/*=5,p2p=4)",
+		Value: "",
+	}
+	backtraceAtFlag = cli.StringFlag{
+		Name:  "backtrace",
+		Usage: "Request a stack trace at a specific logging statement (e.g. \"block.go:271\")",
+		Value: "",
+	}
+	debugFlag = cli.BoolFlag{
+		Name:  "debug",
+		Usage: "Prepends log messages with call-site location (file and line number)",
+	}
+	pprofFlag = cli.BoolFlag{
+		Name:  "pprof",
+		Usage: "Enable the pprof HTTP server",
+	}
+	pprofPortFlag = cli.IntFlag{
+		Name:  "pprofport",
+		Usage: "pprof HTTP server listening port",
+		Value: 6060,
+	}
+	pprofAddrFlag = cli.StringFlag{
+		Name:  "pprofaddr",
+		Usage: "pprof HTTP server listening interface",
+		Value: "127.0.0.1",
+	}
+	memprofilerateFlag = cli.IntFlag{
+		Name:  "memprofilerate",
+		Usage: "Turn on memory profiling with the given rate",
+		Value: runtime.MemProfileRate,
+	}
+	blockprofilerateFlag = cli.IntFlag{
+		Name:  "blockprofilerate",
+		Usage: "Turn on block profiling with the given rate",
+	}
+	cpuprofileFlag = cli.StringFlag{
+		Name:  "cpuprofile",
+		Usage: "Write CPU profile to the given file",
+	}
+	traceFlag = cli.StringFlag{
+		Name:  "trace",
+		Usage: "Write execution trace to the given file",
+	}
+)
+
+// Flags holds all command-line flags required for debugging.
+var Flags = []cli.Flag{
+	verbosityFlag, vmoduleFlag, backtraceAtFlag, debugFlag,
+	pprofFlag, pprofAddrFlag, pprofPortFlag,
+	memprofilerateFlag, blockprofilerateFlag, cpuprofileFlag, traceFlag,
+}
+
+var (
+	ostream log.Handler
+	glogger *log.GlogHandler
+)
+
+func init() {
+	usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb"
+	output := io.Writer(os.Stderr)
+	if usecolor {
+		output = colorable.NewColorableStderr()
+	}
+	ostream = log.StreamHandler(output, log.TerminalFormat(usecolor))
+	glogger = log.NewGlogHandler(ostream)
+}
+
+// Setup initializes profiling and logging based on the CLI flags.
+// It should be called as early as possible in the program.
+func Setup(ctx *cli.Context, logdir string) error {
+	// logging
+	log.PrintOrigins(ctx.GlobalBool(debugFlag.Name))
+	if logdir != "" {
+		rfh, err := log.RotatingFileHandler(
+			logdir,
+			262144,
+			log.JSONFormatOrderedEx(false, true),
+		)
+		if err != nil {
+			return err
+		}
+		glogger.SetHandler(log.MultiHandler(ostream, rfh))
+	}
+	glogger.Verbosity(log.Lvl(ctx.GlobalInt(verbosityFlag.Name)))
+	glogger.Vmodule(ctx.GlobalString(vmoduleFlag.Name))
+	glogger.BacktraceAt(ctx.GlobalString(backtraceAtFlag.Name))
+	log.Root().SetHandler(glogger)
+
+	// profiling, tracing
+	runtime.MemProfileRate = ctx.GlobalInt(memprofilerateFlag.Name)
+	Handler.SetBlockProfileRate(ctx.GlobalInt(blockprofilerateFlag.Name))
+	if traceFile := ctx.GlobalString(traceFlag.Name); traceFile != "" {
+		if err := Handler.StartGoTrace(traceFile); err != nil {
+			return err
+		}
+	}
+	if cpuFile := ctx.GlobalString(cpuprofileFlag.Name); cpuFile != "" {
+		if err := Handler.StartCPUProfile(cpuFile); err != nil {
+			return err
+		}
+	}
+
+	// pprof server
+	if ctx.GlobalBool(pprofFlag.Name) {
+		address := fmt.Sprintf("%s:%d", ctx.GlobalString(pprofAddrFlag.Name), ctx.GlobalInt(pprofPortFlag.Name))
+		StartPProf(address)
+	}
+	return nil
+}
+
+func StartPProf(address string) {
+	// Hook go-metrics into expvar on any /debug/metrics request, load all vars
+	// from the registry into expvar, and execute regular expvar handler.
+	exp.Exp(metrics.DefaultRegistry)
+	http.Handle("/memsize/", http.StripPrefix("/memsize", &Memsize))
+	log.Info("Starting pprof server", "addr", fmt.Sprintf("http://%s/debug/pprof", address))
+	go func() {
+		if err := http.ListenAndServe(address, nil); err != nil {
+			log.Error("Failure in running pprof server", "err", err)
+		}
+	}()
+}
+
+// Exit stops all running profiles, flushing their output to the
+// respective file.
+func Exit() {
+	Handler.StopCPUProfile()
+	Handler.StopGoTrace()
+}
diff --git a/internal/debug/loudpanic.go b/internal/debug/loudpanic.go
new file mode 100644
index 0000000..572ebce
--- /dev/null
+++ b/internal/debug/loudpanic.go
@@ -0,0 +1,27 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build go1.6
+
+package debug
+
+import "runtime/debug"
+
+// LoudPanic panics in a way that gets all goroutine stacks printed on stderr.
+func LoudPanic(x interface{}) {
+	debug.SetTraceback("all")
+	panic(x)
+}
diff --git a/internal/debug/loudpanic_fallback.go b/internal/debug/loudpanic_fallback.go
new file mode 100644
index 0000000..4ce4985
--- /dev/null
+++ b/internal/debug/loudpanic_fallback.go
@@ -0,0 +1,24 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build !go1.6
+
+package debug
+
+// LoudPanic panics in a way that gets all goroutine stacks printed on stderr.
+func LoudPanic(x interface{}) {
+	panic(x)
+}
diff --git a/internal/debug/trace.go b/internal/debug/trace.go
new file mode 100644
index 0000000..cab5dea
--- /dev/null
+++ b/internal/debug/trace.go
@@ -0,0 +1,63 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+//+build go1.5
+
+package debug
+
+import (
+	"errors"
+	"os"
+	"runtime/trace"
+
+	"github.com/ethereum/go-ethereum/log"
+)
+
+// StartGoTrace turns on tracing, writing to the given file.
+func (h *HandlerT) StartGoTrace(file string) error {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	if h.traceW != nil {
+		return errors.New("trace already in progress")
+	}
+	f, err := os.Create(expandHome(file))
+	if err != nil {
+		return err
+	}
+	if err := trace.Start(f); err != nil {
+		f.Close()
+		return err
+	}
+	h.traceW = f
+	h.traceFile = file
+	log.Info("Go tracing started", "dump", h.traceFile)
+	return nil
+}
+
+// StopTrace stops an ongoing trace.
+func (h *HandlerT) StopGoTrace() error {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	trace.Stop()
+	if h.traceW == nil {
+		return errors.New("trace not in progress")
+	}
+	log.Info("Done writing Go trace", "dump", h.traceFile)
+	h.traceW.Close()
+	h.traceW = nil
+	h.traceFile = ""
+	return nil
+}
diff --git a/internal/debug/trace_fallback.go b/internal/debug/trace_fallback.go
new file mode 100644
index 0000000..4118ff4
--- /dev/null
+++ b/internal/debug/trace_fallback.go
@@ -0,0 +1,31 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+//+build !go1.5
+
+// no-op implementation of tracing methods for Go < 1.5.
+
+package debug
+
+import "errors"
+
+func (*HandlerT) StartGoTrace(string) error {
+	return errors.New("tracing is not supported on Go < 1.5")
+}
+
+func (*HandlerT) StopGoTrace() error {
+	return errors.New("tracing is not supported on Go < 1.5")
+}
diff --git a/vendor/github.com/ethereum/go-ethereum b/vendor/github.com/ethereum/go-ethereum
new file mode 160000
+Subproject c9cdf144d55f6bbd75314e812eeefc18d7e8c40