Rebase on geth 1.7.2 (#402)

vendor/github.com/ethereum/go-ethereum/.gitignore

@@ -30,3 +30,6 @@ build/_vendor/pkg
 # travis
 profile.tmp
 profile.cov
+
+# IdeaIDE
+.idea

vendor/github.com/ethereum/go-ethereum/.travis.yml

@@ -6,7 +6,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.7.6
+      go: 1.7.x
       script:
         - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install fuse
         - sudo modprobe fuse
@@ -18,7 +18,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.8.3
+      go: 1.8.x
       script:
         - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install fuse
         - sudo modprobe fuse
@@ -31,7 +31,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.9.0
+      go: 1.9.x
       script:
         - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install fuse
         - sudo modprobe fuse
@@ -41,7 +41,7 @@ matrix:
         - go run build/ci.go test -coverage -misspell
 
     - os: osx
-      go: 1.9.0
+      go: 1.9.x
       sudo: required
       script:
         - brew update
@@ -54,7 +54,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.9.0
+      go: 1.9.x
       env:
         - ubuntu-ppa
         - azure-linux
@@ -93,7 +93,7 @@ matrix:
       sudo: required
       services:
         - docker
-      go: 1.9.0
+      go: 1.9.x
       env:
         - azure-linux-mips
       script:
@@ -150,7 +150,7 @@ matrix:
 
     # This builder does the OSX Azure, iOS CocoaPods and iOS Azure uploads
     - os: osx
-      go: 1.9.0
+      go: 1.9.x
       env:
         - azure-osx
         - azure-ios
@@ -176,7 +176,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.9.0
+      go: 1.9.x
       env:
         - azure-purge
       script:

vendor/github.com/ethereum/go-ethereum/VERSION

@@ -1 +1 @@
-1.7.0
+1.7.2

vendor/github.com/ethereum/go-ethereum/accounts/abi/bind/backends/simulated.go

@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"math/big"
 	"sync"
+	"time"
 
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
@@ -167,7 +168,7 @@ func (b *SimulatedBackend) CallContract(ctx context.Context, call ethereum.CallM
 	if err != nil {
 		return nil, err
 	}
-	rval, _, err := b.callContract(ctx, call, b.blockchain.CurrentBlock(), state)
+	rval, _, _, err := b.callContract(ctx, call, b.blockchain.CurrentBlock(), state)
 	return rval, err
 }
 
@@ -177,7 +178,7 @@ func (b *SimulatedBackend) PendingCallContract(ctx context.Context, call ethereu
 	defer b.mu.Unlock()
 	defer b.pendingState.RevertToSnapshot(b.pendingState.Snapshot())
 
-	rval, _, err := b.callContract(ctx, call, b.pendingBlock, b.pendingState)
+	rval, _, _, err := b.callContract(ctx, call, b.pendingBlock, b.pendingState)
 	return rval, err
 }
 
@@ -203,8 +204,11 @@ func (b *SimulatedBackend) EstimateGas(ctx context.Context, call ethereum.CallMs
 	defer b.mu.Unlock()
 
 	// Binary search the gas requirement, as it may be higher than the amount used
-	var lo, hi uint64
-	if call.Gas != nil {
+	var (
+		lo uint64 = params.TxGas - 1
+		hi uint64
+	)
+	if call.Gas != nil && call.Gas.Uint64() >= params.TxGas {
 		hi = call.Gas.Uint64()
 	} else {
 		hi = b.pendingBlock.GasLimit().Uint64()
@@ -215,11 +219,11 @@ func (b *SimulatedBackend) EstimateGas(ctx context.Context, call ethereum.CallMs
 		call.Gas = new(big.Int).SetUint64(mid)
 
 		snapshot := b.pendingState.Snapshot()
-		_, gas, err := b.callContract(ctx, call, b.pendingBlock, b.pendingState)
+		_, _, failed, err := b.callContract(ctx, call, b.pendingBlock, b.pendingState)
 		b.pendingState.RevertToSnapshot(snapshot)
 
-		// If the transaction became invalid or used all the gas (failed), raise the gas limit
-		if err != nil || gas.Cmp(call.Gas) == 0 {
+		// If the transaction became invalid or execution failed, raise the gas limit
+		if err != nil || failed {
 			lo = mid
 			continue
 		}
@@ -231,7 +235,7 @@ func (b *SimulatedBackend) EstimateGas(ctx context.Context, call ethereum.CallMs
 
 // callContract implemens common code between normal and pending contract calls.
 // state is modified during execution, make sure to copy it if necessary.
-func (b *SimulatedBackend) callContract(ctx context.Context, call ethereum.CallMsg, block *types.Block, statedb *state.StateDB) ([]byte, *big.Int, error) {
+func (b *SimulatedBackend) callContract(ctx context.Context, call ethereum.CallMsg, block *types.Block, statedb *state.StateDB) ([]byte, *big.Int, bool, error) {
 	// Ensure message is initialized properly.
 	if call.GasPrice == nil {
 		call.GasPrice = big.NewInt(1)
@@ -253,9 +257,8 @@ func (b *SimulatedBackend) callContract(ctx context.Context, call ethereum.CallM
 	// about the transaction and calling mechanisms.
 	vmenv := vm.NewEVM(evmContext, statedb, b.config, vm.Config{})
 	gaspool := new(core.GasPool).AddGas(math.MaxBig256)
-	// TODO utilize returned failed flag to help gas estimation.
-	ret, gasUsed, _, _, err := core.NewStateTransition(vmenv, msg, gaspool).TransitionDb()
-	return ret, gasUsed, err
+	ret, gasUsed, _, failed, err := core.NewStateTransition(vmenv, msg, gaspool).TransitionDb()
+	return ret, gasUsed, failed, err
 }
 
 // SendTransaction updates the pending block to include the given transaction.
@@ -284,6 +287,22 @@ func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transa
 	return nil
 }
 
+// JumpTimeInSeconds adds skip seconds to the clock
+func (b *SimulatedBackend) AdjustTime(adjustment time.Duration) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	blocks, _ := core.GenerateChain(b.config, b.blockchain.CurrentBlock(), b.database, 1, func(number int, block *core.BlockGen) {
+		for _, tx := range b.pendingBlock.Transactions() {
+			block.AddTx(tx)
+		}
+		block.OffsetTime(int64(adjustment.Seconds()))
+	})
+	b.pendingBlock = blocks[0]
+	b.pendingState, _ = state.New(b.pendingBlock.Root(), state.NewDatabase(b.database))
+
+	return nil
+}
+
 // callmsg implements core.Message to allow passing it as a transaction simulator.
 type callmsg struct {
 	ethereum.CallMsg

vendor/github.com/ethereum/go-ethereum/accounts/keystore/account_cache.go

@@ -31,6 +31,7 @@ import (
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/log"
+	"gopkg.in/fatih/set.v0"
 )
 
 // Minimum amount of time between cache reloads. This limit applies if the platform does
@@ -71,6 +72,14 @@ type accountCache struct {
 	byAddr   map[common.Address][]accounts.Account
 	throttle *time.Timer
 	notify   chan struct{}
+	fileC    fileCache
+}
+
+// fileCache is a cache of files seen during scan of keystore
+type fileCache struct {
+	all   *set.SetNonTS // list of all files
+	mtime time.Time     // latest mtime seen
+	mu    sync.RWMutex
 }
 
 func newAccountCache(keydir string) (*accountCache, chan struct{}) {
@@ -78,6 +87,7 @@ func newAccountCache(keydir string) (*accountCache, chan struct{}) {
 		keydir: keydir,
 		byAddr: make(map[common.Address][]accounts.Account),
 		notify: make(chan struct{}, 1),
+		fileC:  fileCache{all: set.NewNonTS()},
 	}
 	ac.watcher = newWatcher(ac)
 	return ac, ac.notify
@@ -127,6 +137,23 @@ func (ac *accountCache) delete(removed accounts.Account) {
 	}
 }
 
+// deleteByFile removes an account referenced by the given path.
+func (ac *accountCache) deleteByFile(path string) {
+	ac.mu.Lock()
+	defer ac.mu.Unlock()
+	i := sort.Search(len(ac.all), func(i int) bool { return ac.all[i].URL.Path >= path })
+
+	if i < len(ac.all) && ac.all[i].URL.Path == path {
+		removed := ac.all[i]
+		ac.all = append(ac.all[:i], ac.all[i+1:]...)
+		if ba := removeAccount(ac.byAddr[removed.Address], removed); len(ba) == 0 {
+			delete(ac.byAddr, removed.Address)
+		} else {
+			ac.byAddr[removed.Address] = ba
+		}
+	}
+}
+
 func removeAccount(slice []accounts.Account, elem accounts.Account) []accounts.Account {
 	for i := range slice {
 		if slice[i] == elem {
@@ -167,15 +194,16 @@ func (ac *accountCache) find(a accounts.Account) (accounts.Account, error) {
 	default:
 		err := &AmbiguousAddrError{Addr: a.Address, Matches: make([]accounts.Account, len(matches))}
 		copy(err.Matches, matches)
+		sort.Sort(accountsByURL(err.Matches))
 		return accounts.Account{}, err
 	}
 }
 
 func (ac *accountCache) maybeReload() {
 	ac.mu.Lock()
-	defer ac.mu.Unlock()
 
 	if ac.watcher.running {
+		ac.mu.Unlock()
 		return // A watcher is running and will keep the cache up-to-date.
 	}
 	if ac.throttle == nil {
@@ -184,12 +212,15 @@ func (ac *accountCache) maybeReload() {
 		select {
 		case <-ac.throttle.C:
 		default:
+			ac.mu.Unlock()
 			return // The cache was reloaded recently.
 		}
 	}
+	// No watcher running, start it.
 	ac.watcher.start()
-	ac.reload()
 	ac.throttle.Reset(minReloadInterval)
+	ac.mu.Unlock()
+	ac.scanAccounts()
 }
 
 func (ac *accountCache) close() {
@@ -205,54 +236,76 @@ func (ac *accountCache) close() {
 	ac.mu.Unlock()
 }
 
-// reload caches addresses of existing accounts.
-// Callers must hold ac.mu.
-func (ac *accountCache) reload() {
-	accounts, err := ac.scan()
+// scanFiles performs a new scan on the given directory, compares against the already
+// cached filenames, and returns file sets: new, missing , modified
+func (fc *fileCache) scanFiles(keyDir string) (set.Interface, set.Interface, set.Interface, error) {
+	t0 := time.Now()
+	files, err := ioutil.ReadDir(keyDir)
+	t1 := time.Now()
 	if err != nil {
-		log.Debug("Failed to reload keystore contents", "err", err)
+		return nil, nil, nil, err
 	}
-	ac.all = accounts
-	sort.Sort(ac.all)
-	for k := range ac.byAddr {
-		delete(ac.byAddr, k)
-	}
-	for _, a := range accounts {
-		ac.byAddr[a.Address] = append(ac.byAddr[a.Address], a)
-	}
-	select {
-	case ac.notify <- struct{}{}:
-	default:
-	}
-	log.Debug("Reloaded keystore contents", "accounts", len(ac.all))
-}
+	fc.mu.RLock()
+	prevMtime := fc.mtime
+	fc.mu.RUnlock()
 
-func (ac *accountCache) scan() ([]accounts.Account, error) {
-	files, err := ioutil.ReadDir(ac.keydir)
-	if err != nil {
-		return nil, err
-	}
-
-	var (
-		buf     = new(bufio.Reader)
-		addrs   []accounts.Account
-		keyJSON struct {
-			Address string `json:"address"`
-		}
-	)
+	filesNow := set.NewNonTS()
+	moddedFiles := set.NewNonTS()
+	var newMtime time.Time
 	for _, fi := range files {
-		path := filepath.Join(ac.keydir, fi.Name())
+		modTime := fi.ModTime()
+		path := filepath.Join(keyDir, fi.Name())
 		if skipKeyFile(fi) {
 			log.Trace("Ignoring file on account scan", "path", path)
 			continue
 		}
-		logger := log.New("path", path)
+		filesNow.Add(path)
+		if modTime.After(prevMtime) {
+			moddedFiles.Add(path)
+		}
+		if modTime.After(newMtime) {
+			newMtime = modTime
+		}
+	}
+	t2 := time.Now()
 
+	fc.mu.Lock()
+	// Missing = previous - current
+	missing := set.Difference(fc.all, filesNow)
+	// New = current - previous
+	newFiles := set.Difference(filesNow, fc.all)
+	// Modified = modified - new
+	modified := set.Difference(moddedFiles, newFiles)
+	fc.all = filesNow
+	fc.mtime = newMtime
+	fc.mu.Unlock()
+	t3 := time.Now()
+	log.Debug("FS scan times", "list", t1.Sub(t0), "set", t2.Sub(t1), "diff", t3.Sub(t2))
+	return newFiles, missing, modified, nil
+}
+
+// scanAccounts checks if any changes have occurred on the filesystem, and
+// updates the account cache accordingly
+func (ac *accountCache) scanAccounts() error {
+	newFiles, missingFiles, modified, err := ac.fileC.scanFiles(ac.keydir)
+	t1 := time.Now()
+	if err != nil {
+		log.Debug("Failed to reload keystore contents", "err", err)
+		return err
+	}
+	var (
+		buf     = new(bufio.Reader)
+		keyJSON struct {
+			Address string `json:"address"`
+		}
+	)
+	readAccount := func(path string) *accounts.Account {
 		fd, err := os.Open(path)
 		if err != nil {
-			logger.Trace("Failed to open keystore file", "err", err)
-			continue
+			log.Trace("Failed to open keystore file", "path", path, "err", err)
+			return nil
 		}
+		defer fd.Close()
 		buf.Reset(fd)
 		// Parse the address.
 		keyJSON.Address = ""
@@ -260,15 +313,45 @@ func (ac *accountCache) scan() ([]accounts.Account, error) {
 		addr := common.HexToAddress(keyJSON.Address)
 		switch {
 		case err != nil:
-			logger.Debug("Failed to decode keystore key", "err", err)
+			log.Debug("Failed to decode keystore key", "path", path, "err", err)
 		case (addr == common.Address{}):
-			logger.Debug("Failed to decode keystore key", "err", "missing or zero address")
+			log.Debug("Failed to decode keystore key", "path", path, "err", "missing or zero address")
 		default:
-			addrs = append(addrs, accounts.Account{Address: addr, URL: accounts.URL{Scheme: KeyStoreScheme, Path: path}})
+			return &accounts.Account{Address: addr, URL: accounts.URL{Scheme: KeyStoreScheme, Path: path}}
 		}
-		fd.Close()
+		return nil
 	}
-	return addrs, err
+
+	for _, p := range newFiles.List() {
+		path, _ := p.(string)
+		a := readAccount(path)
+		if a != nil {
+			ac.add(*a)
+		}
+	}
+	for _, p := range missingFiles.List() {
+		path, _ := p.(string)
+		ac.deleteByFile(path)
+	}
+
+	for _, p := range modified.List() {
+		path, _ := p.(string)
+		a := readAccount(path)
+		ac.deleteByFile(path)
+		if a != nil {
+			ac.add(*a)
+		}
+	}
+
+	t2 := time.Now()
+
+	select {
+	case ac.notify <- struct{}{}:
+	default:
+	}
+	log.Trace("Handled keystore changes", "time", t2.Sub(t1))
+
+	return nil
 }
 
 func skipKeyFile(fi os.FileInfo) bool {

vendor/github.com/ethereum/go-ethereum/accounts/keystore/watch.go

@@ -70,7 +70,6 @@ func (w *watcher) loop() {
 		return
 	}
 	defer notify.Stop(w.ev)
-
 	logger.Trace("Started watching keystore folder")
 	defer logger.Trace("Stopped watching keystore folder")
 
@@ -82,9 +81,9 @@ func (w *watcher) loop() {
 	// When an event occurs, the reload call is delayed a bit so that
 	// multiple events arriving quickly only cause a single reload.
 	var (
-		debounce          = time.NewTimer(0)
-		debounceDuration  = 500 * time.Millisecond
-		inCycle, hadEvent bool
+		debounce         = time.NewTimer(0)
+		debounceDuration = 500 * time.Millisecond
+		rescanTriggered  = false
 	)
 	defer debounce.Stop()
 	for {
@@ -92,22 +91,14 @@ func (w *watcher) loop() {
 		case <-w.quit:
 			return
 		case <-w.ev:
-			if !inCycle {
+			// Trigger the scan (with delay), if not already triggered
+			if !rescanTriggered {
 				debounce.Reset(debounceDuration)
-				inCycle = true
-			} else {
-				hadEvent = true
+				rescanTriggered = true
 			}
 		case <-debounce.C:
-			w.ac.mu.Lock()
-			w.ac.reload()
-			w.ac.mu.Unlock()
-			if hadEvent {
-				debounce.Reset(debounceDuration)
-				inCycle, hadEvent = true, false
-			} else {
-				inCycle, hadEvent = false, false
-			}
+			w.ac.scanAccounts()
+			rescanTriggered = false
 		}
 	}
 }

vendor/github.com/ethereum/go-ethereum/accounts/usbwallet/hub.go

@@ -47,6 +47,8 @@ type Hub struct {
 	scheme     string                  // Protocol scheme prefixing account and wallet URLs.
 	vendorID   uint16                  // USB vendor identifier used for device discovery
 	productIDs []uint16                // USB product identifiers used for device discovery
+	usageID    uint16                  // USB usage page identifier used for macOS device discovery
+	endpointID int                     // USB endpoint identifier used for non-macOS device discovery
 	makeDriver func(log.Logger) driver // Factory method to construct a vendor specific driver
 
 	refreshed   time.Time               // Time instance when the list of wallets was last refreshed
@@ -66,16 +68,16 @@ type Hub struct {
 
 // NewLedgerHub creates a new hardware wallet manager for Ledger devices.
 func NewLedgerHub() (*Hub, error) {
-	return newHub(LedgerScheme, 0x2c97, []uint16{0x0000 /* Ledger Blue */, 0x0001 /* Ledger Nano S */}, newLedgerDriver)
+	return newHub(LedgerScheme, 0x2c97, []uint16{0x0000 /* Ledger Blue */, 0x0001 /* Ledger Nano S */}, 0xffa0, 0, newLedgerDriver)
 }
 
 // NewTrezorHub creates a new hardware wallet manager for Trezor devices.
 func NewTrezorHub() (*Hub, error) {
-	return newHub(TrezorScheme, 0x534c, []uint16{0x0001 /* Trezor 1 */}, newTrezorDriver)
+	return newHub(TrezorScheme, 0x534c, []uint16{0x0001 /* Trezor 1 */}, 0xff00, 0, newTrezorDriver)
 }
 
 // newHub creates a new hardware wallet manager for generic USB devices.
-func newHub(scheme string, vendorID uint16, productIDs []uint16, makeDriver func(log.Logger) driver) (*Hub, error) {
+func newHub(scheme string, vendorID uint16, productIDs []uint16, usageID uint16, endpointID int, makeDriver func(log.Logger) driver) (*Hub, error) {
 	if !hid.Supported() {
 		return nil, errors.New("unsupported platform")
 	}
@@ -83,6 +85,8 @@ func newHub(scheme string, vendorID uint16, productIDs []uint16, makeDriver func
 		scheme:     scheme,
 		vendorID:   vendorID,
 		productIDs: productIDs,
+		usageID:    usageID,
+		endpointID: endpointID,
 		makeDriver: makeDriver,
 		quit:       make(chan chan error),
 	}
@@ -133,7 +137,7 @@ func (hub *Hub) refreshWallets() {
 	}
 	for _, info := range hid.Enumerate(hub.vendorID, 0) {
 		for _, id := range hub.productIDs {
-			if info.ProductID == id && info.Interface == 0 {
+			if info.ProductID == id && (info.UsagePage == hub.usageID || info.Interface == hub.endpointID) {
 				devices = append(devices, info)
 				break
 			}

vendor/github.com/ethereum/go-ethereum/build/ci-notes.md

@@ -1,49 +0,0 @@
-# Debian Packaging
-
-Tagged releases and develop branch commits are available as installable Debian packages
-for Ubuntu. Packages are built for the all Ubuntu versions which are supported by
-Canonical:
-
-- Trusty Tahr (14.04 LTS)
-- Xenial Xerus (16.04 LTS)
-- Yakkety Yak (16.10)
-- Zesty Zapus (17.04)
-
-Packages of develop branch commits have suffix -unstable and cannot be installed alongside
-the stable version. Switching between release streams requires user intervention.
-
-The packages are built and served by launchpad.net. We generate a Debian source package
-for each distribution and upload it. Their builder picks up the source package, builds it
-and installs the new version into the PPA repository. Launchpad requires a valid signature
-by a team member for source package uploads. The signing key is stored in an environment
-variable which Travis CI makes available to certain builds.
-
-We want to build go-ethereum with the most recent version of Go, irrespective of the Go
-version that is available in the main Ubuntu repository. In order to make this possible,
-our PPA depends on the ~gophers/ubuntu/archive PPA. Our source package build-depends on
-golang-1.9, which is co-installable alongside the regular golang package. PPA dependencies
-can be edited at https://launchpad.net/%7Eethereum/+archive/ubuntu/ethereum/+edit-dependencies
-
-## Building Packages Locally (for testing)
-
-You need to run Ubuntu to do test packaging.
-
-Add the gophers PPA and install Go 1.9 and Debian packaging tools:
-
-    $ sudo apt-add-repository ppa:gophers/ubuntu/archive
-    $ sudo apt-get update
-    $ sudo apt-get install build-essential golang-1.9 devscripts debhelper
-
-Create the source packages:
-
-    $ go run build/ci.go debsrc -workdir dist
-
-Then go into the source package directory for your running distribution and build the package:
-
-    $ cd dist/ethereum-unstable-1.6.0+xenial
-    $ dpkg-buildpackage
-
-Built packages are placed in the dist/ directory.
-
-    $ cd ..
-    $ dpkg-deb -c geth-unstable_1.6.0+xenial_amd64.deb

vendor/github.com/ethereum/go-ethereum/build/deb.changelog

@@ -1,5 +0,0 @@
-{{.Name}} ({{.VersionString}}) {{.Distro}}; urgency=low
-
-  * git build of {{.Env.Commit}}
-
- -- {{.Author}}  {{.Time}}

vendor/github.com/ethereum/go-ethereum/build/deb.control

@@ -1,25 +0,0 @@
-Source: {{.Name}}
-Section: science
-Priority: extra
-Maintainer: {{.Author}}
-Build-Depends: debhelper (>= 8.0.0), golang-1.9
-Standards-Version: 3.9.5
-Homepage: https://ethereum.org
-Vcs-Git: git://github.com/ethereum/go-ethereum.git
-Vcs-Browser: https://github.com/ethereum/go-ethereum
-
-Package: {{.Name}}
-Architecture: any
-Depends: ${misc:Depends}, {{.ExeList}}
-Description: Meta-package to install geth and other tools
- Meta-package to install geth and other tools
-
-{{range .Executables}}
-Package: {{$.ExeName .}}
-Conflicts: {{$.ExeConflicts .}}
-Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}
-Built-Using: ${misc:Built-Using}
-Description: {{.Description}}
- {{.Description}}
-{{end}}

vendor/github.com/ethereum/go-ethereum/build/deb.copyright

@@ -1,14 +0,0 @@
-Copyright 2016 The go-ethereum Authors
-
-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/>.

vendor/github.com/ethereum/go-ethereum/build/deb.docs

@@ -1 +0,0 @@
-AUTHORS

vendor/github.com/ethereum/go-ethereum/build/deb.install

@@ -1 +0,0 @@
-build/bin/{{.Name}} usr/bin

vendor/github.com/ethereum/go-ethereum/build/deb.rules

@@ -1,13 +0,0 @@
-#!/usr/bin/make -f
-# -*- makefile -*-
-
-# Uncomment this to turn on verbose mode.
-#export DH_VERBOSE=1
-
-override_dh_auto_build:
-	build/env.sh /usr/lib/go-1.9/bin/go run build/ci.go install -git-commit={{.Env.Commit}} -git-branch={{.Env.Branch}} -git-tag={{.Env.Tag}} -buildnum={{.Env.Buildnum}} -pull-request={{.Env.IsPullRequest}}
-
-override_dh_auto_test:
-
-%:
-	dh $@

vendor/github.com/ethereum/go-ethereum/build/env.sh

@@ -1,39 +0,0 @@
-#!/bin/sh
-
-set -e
-
-if [ ! -f "build/env.sh" ]; then
-    echo "$0 must be run from the root of the repository."
-    exit 2
-fi
-
-# Create fake Go workspace if it doesn't exist yet.
-workspace="$PWD/build/_workspace"
-root="$PWD"
-ethdir="$workspace/src/github.com/ethereum"
-if [ ! -L "$ethdir/go-ethereum" ]; then
-    mkdir -p "$ethdir"
-    cd "$ethdir"
-    ln -s ../../../../../. go-ethereum
-    cd "$root"
-fi
-
-# Link status-go lib
-statusgodir="$workspace/src/github.com/status-im"
-if [ ! -L "$statusgodir/status-go" ]; then
-    mkdir -p "$statusgodir"
-    cd "$statusgodir"
-    ln -s ../../../../../../../status-im/status-go status-go
-    cd "$root"
-fi
-
-# Set up the environment to use the workspace.
-GOPATH="$workspace"
-export GOPATH
-
-# Run the command inside the workspace.
-cd "$ethdir/go-ethereum"
-PWD="$ethdir/go-ethereum"
-
-# Launch the arguments with the configured environment.
-exec "$@"

vendor/github.com/ethereum/go-ethereum/build/mvn.pom

@@ -1,57 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
-                      http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-
-  <groupId>org.ethereum</groupId>
-  <artifactId>geth</artifactId>
-  <version>{{.Version}}</version>
-  <packaging>aar</packaging>
-
-  <name>Android Ethereum Client</name>
-  <description>Android port of the go-ethereum libraries and node</description>
-  <url>https://github.com/ethereum/go-ethereum</url>
-  <inceptionYear>2015</inceptionYear>
-
-  <licenses>
-    <license>
-      <name>GNU Lesser General Public License, Version 3.0</name>
-      <url>https://www.gnu.org/licenses/lgpl-3.0.en.html</url>
-      <distribution>repo</distribution>
-    </license>
-  </licenses>
-
-  <organization>
-    <name>Ethereum</name>
-    <url>https://ethereum.org</url>
-  </organization>
-
-  <developers>
-    <developer>
-      <id>karalabe</id>
-      <name>Péter Szilágyi</name>
-      <email>peterke@gmail.com</email>
-      <url>https://github.com/karalabe</url>
-      <properties>
-        <picUrl>https://www.gravatar.com/avatar/2ecbf0f5b4b79eebf8c193e5d324357f?s=256</picUrl>
-      </properties>
-    </developer>
-  </developers>
-
-  <contributors>{{range .Contributors}}
-    <contributor>
-      <name>{{.Name}}</name>
-      <email>{{.Email}}</email>
-    </contributor>{{end}}
-  </contributors>
-
-  <issueManagement>
-    <system>GitHub Issues</system>
-    <url>https://github.com/ethereum/go-ethereum/issues/</url>
-  </issueManagement>
-
-  <scm>
-    <url>https://github.com/ethereum/go-ethereum</url>
-  </scm>
-</project>

vendor/github.com/ethereum/go-ethereum/build/mvn.settings

@@ -1,24 +0,0 @@
-<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
-                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
-  <servers>
-    <server>
-      <id>ossrh</id>
-      <username>${env.ANDROID_SONATYPE_USERNAME}</username>
-      <password>${env.ANDROID_SONATYPE_PASSWORD}</password>
-    </server>
-  </servers>
-  <profiles>
-    <profile>
-      <id>ossrh</id>
-      <activation>
-        <activeByDefault>true</activeByDefault>
-      </activation>
-      <properties>
-        <gpg.executable>gpg</gpg.executable>
-        <gpg.passphrase></gpg.passphrase>
-      </properties>
-    </profile>
-  </profiles>
-</settings>

vendor/github.com/ethereum/go-ethereum/build/nsis.envvarupdate.nsh

@@ -1,327 +0,0 @@
-/**
- *  EnvVarUpdate.nsh
- *    : Environmental Variables: append, prepend, and remove entries
- *
- *     WARNING: If you use StrFunc.nsh header then include it before this file
- *              with all required definitions. This is to avoid conflicts
- *
- *  Usage:
- *    ${EnvVarUpdate} "ResultVar" "EnvVarName" "Action" "RegLoc" "PathString"
- *
- *  Credits:
- *  Version 1.0
- *  * Cal Turney (turnec2)
- *  * Amir Szekely (KiCHiK) and e-circ for developing the forerunners of this
- *    function: AddToPath, un.RemoveFromPath, AddToEnvVar, un.RemoveFromEnvVar,
- *    WriteEnvStr, and un.DeleteEnvStr
- *  * Diego Pedroso (deguix) for StrTok
- *  * Kevin English (kenglish_hi) for StrContains
- *  * Hendri Adriaens (Smile2Me), Diego Pedroso (deguix), and Dan Fuhry
- *    (dandaman32) for StrReplace
- *
- *  Version 1.1 (compatibility with StrFunc.nsh)
- *  * techtonik
- *
- *  http://nsis.sourceforge.net/Environmental_Variables:_append%2C_prepend%2C_and_remove_entries
- *
- */
-
-
-!ifndef ENVVARUPDATE_FUNCTION
-!define ENVVARUPDATE_FUNCTION
-!verbose push
-!verbose 3
-!include "LogicLib.nsh"
-!include "WinMessages.NSH"
-!include "StrFunc.nsh"
-
-; ---- Fix for conflict if StrFunc.nsh is already includes in main file -----------------------
-!macro _IncludeStrFunction StrFuncName
-  !ifndef ${StrFuncName}_INCLUDED
-    ${${StrFuncName}}
-  !endif
-  !ifndef Un${StrFuncName}_INCLUDED
-    ${Un${StrFuncName}}
-  !endif
-  !define un.${StrFuncName} "${Un${StrFuncName}}"
-!macroend
-
-!insertmacro _IncludeStrFunction StrTok
-!insertmacro _IncludeStrFunction StrStr
-!insertmacro _IncludeStrFunction StrRep
-
-; ---------------------------------- Macro Definitions ----------------------------------------
-!macro _EnvVarUpdateConstructor ResultVar EnvVarName Action Regloc PathString
-  Push "${EnvVarName}"
-  Push "${Action}"
-  Push "${RegLoc}"
-  Push "${PathString}"
-    Call EnvVarUpdate
-  Pop "${ResultVar}"
-!macroend
-!define EnvVarUpdate '!insertmacro "_EnvVarUpdateConstructor"'
-
-!macro _unEnvVarUpdateConstructor ResultVar EnvVarName Action Regloc PathString
-  Push "${EnvVarName}"
-  Push "${Action}"
-  Push "${RegLoc}"
-  Push "${PathString}"
-    Call un.EnvVarUpdate
-  Pop "${ResultVar}"
-!macroend
-!define un.EnvVarUpdate '!insertmacro "_unEnvVarUpdateConstructor"'
-; ---------------------------------- Macro Definitions end-------------------------------------
-
-;----------------------------------- EnvVarUpdate start----------------------------------------
-!define hklm_all_users     'HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"'
-!define hkcu_current_user  'HKCU "Environment"'
-
-!macro EnvVarUpdate UN
-
-Function ${UN}EnvVarUpdate
-
-  Push $0
-  Exch 4
-  Exch $1
-  Exch 3
-  Exch $2
-  Exch 2
-  Exch $3
-  Exch
-  Exch $4
-  Push $5
-  Push $6
-  Push $7
-  Push $8
-  Push $9
-  Push $R0
-
-  /* After this point:
-  -------------------------
-     $0 = ResultVar     (returned)
-     $1 = EnvVarName    (input)
-     $2 = Action        (input)
-     $3 = RegLoc        (input)
-     $4 = PathString    (input)
-     $5 = Orig EnvVar   (read from registry)
-     $6 = Len of $0     (temp)
-     $7 = tempstr1      (temp)
-     $8 = Entry counter (temp)
-     $9 = tempstr2      (temp)
-     $R0 = tempChar     (temp)  */
-
-  ; Step 1:  Read contents of EnvVarName from RegLoc
-  ;
-  ; Check for empty EnvVarName
-  ${If} $1 == ""
-    SetErrors
-    DetailPrint "ERROR: EnvVarName is blank"
-    Goto EnvVarUpdate_Restore_Vars
-  ${EndIf}
-
-  ; Check for valid Action
-  ${If}    $2 != "A"
-  ${AndIf} $2 != "P"
-  ${AndIf} $2 != "R"
-    SetErrors
-    DetailPrint "ERROR: Invalid Action - must be A, P, or R"
-    Goto EnvVarUpdate_Restore_Vars
-  ${EndIf}
-
-  ${If} $3 == HKLM
-    ReadRegStr $5 ${hklm_all_users} $1     ; Get EnvVarName from all users into $5
-  ${ElseIf} $3 == HKCU
-    ReadRegStr $5 ${hkcu_current_user} $1  ; Read EnvVarName from current user into $5
-  ${Else}
-    SetErrors
-    DetailPrint 'ERROR: Action is [$3] but must be "HKLM" or HKCU"'
-    Goto EnvVarUpdate_Restore_Vars
-  ${EndIf}
-
-  ; Check for empty PathString
-  ${If} $4 == ""
-    SetErrors
-    DetailPrint "ERROR: PathString is blank"
-    Goto EnvVarUpdate_Restore_Vars
-  ${EndIf}
-
-  ; Make sure we've got some work to do
-  ${If} $5 == ""
-  ${AndIf} $2 == "R"
-    SetErrors
-    DetailPrint "$1 is empty - Nothing to remove"
-    Goto EnvVarUpdate_Restore_Vars
-  ${EndIf}
-
-  ; Step 2: Scrub EnvVar
-  ;
-  StrCpy $0 $5                             ; Copy the contents to $0
-  ; Remove spaces around semicolons (NOTE: spaces before the 1st entry or
-  ; after the last one are not removed here but instead in Step 3)
-  ${If} $0 != ""                           ; If EnvVar is not empty ...
-    ${Do}
-      ${${UN}StrStr} $7 $0 " ;"
-      ${If} $7 == ""
-        ${ExitDo}
-      ${EndIf}
-      ${${UN}StrRep} $0  $0 " ;" ";"         ; Remove '<space>;'
-    ${Loop}
-    ${Do}
-      ${${UN}StrStr} $7 $0 "; "
-      ${If} $7 == ""
-        ${ExitDo}
-      ${EndIf}
-      ${${UN}StrRep} $0  $0 "; " ";"         ; Remove ';<space>'
-    ${Loop}
-    ${Do}
-      ${${UN}StrStr} $7 $0 ";;"
-      ${If} $7 == ""
-        ${ExitDo}
-      ${EndIf}
-      ${${UN}StrRep} $0  $0 ";;" ";"
-    ${Loop}
-
-    ; Remove a leading or trailing semicolon from EnvVar
-    StrCpy  $7  $0 1 0
-    ${If} $7 == ";"
-      StrCpy $0  $0 "" 1                   ; Change ';<EnvVar>' to '<EnvVar>'
-    ${EndIf}
-    StrLen $6 $0
-    IntOp $6 $6 - 1
-    StrCpy $7  $0 1 $6
-    ${If} $7 == ";"
-     StrCpy $0  $0 $6                      ; Change ';<EnvVar>' to '<EnvVar>'
-    ${EndIf}
-    ; DetailPrint "Scrubbed $1: [$0]"      ; Uncomment to debug
-  ${EndIf}
-
-  /* Step 3. Remove all instances of the target path/string (even if "A" or "P")
-     $6 = bool flag (1 = found and removed PathString)
-     $7 = a string (e.g. path) delimited by semicolon(s)
-     $8 = entry counter starting at 0
-     $9 = copy of $0
-     $R0 = tempChar      */
-
-  ${If} $5 != ""                           ; If EnvVar is not empty ...
-    StrCpy $9 $0
-    StrCpy $0 ""
-    StrCpy $8 0
-    StrCpy $6 0
-
-    ${Do}
-      ${${UN}StrTok} $7 $9 ";" $8 "0"      ; $7 = next entry, $8 = entry counter
-
-      ${If} $7 == ""                       ; If we've run out of entries,
-        ${ExitDo}                          ;    were done
-      ${EndIf}                             ;
-
-      ; Remove leading and trailing spaces from this entry (critical step for Action=Remove)
-      ${Do}
-        StrCpy $R0  $7 1
-        ${If} $R0 != " "
-          ${ExitDo}
-        ${EndIf}
-        StrCpy $7   $7 "" 1                ;  Remove leading space
-      ${Loop}
-      ${Do}
-        StrCpy $R0  $7 1 -1
-        ${If} $R0 != " "
-          ${ExitDo}
-        ${EndIf}
-        StrCpy $7   $7 -1                  ;  Remove trailing space
-      ${Loop}
-      ${If} $7 == $4                       ; If string matches, remove it by not appending it
-        StrCpy $6 1                        ; Set 'found' flag
-      ${ElseIf} $7 != $4                   ; If string does NOT match
-      ${AndIf}  $0 == ""                   ;    and the 1st string being added to $0,
-        StrCpy $0 $7                       ;    copy it to $0 without a prepended semicolon
-      ${ElseIf} $7 != $4                   ; If string does NOT match
-      ${AndIf}  $0 != ""                   ;    and this is NOT the 1st string to be added to $0,
-        StrCpy $0 $0;$7                    ;    append path to $0 with a prepended semicolon
-      ${EndIf}                             ;
-
-      IntOp $8 $8 + 1                      ; Bump counter
-    ${Loop}                                ; Check for duplicates until we run out of paths
-  ${EndIf}
-
-  ; Step 4:  Perform the requested Action
-  ;
-  ${If} $2 != "R"                          ; If Append or Prepend
-    ${If} $6 == 1                          ; And if we found the target
-      DetailPrint "Target is already present in $1. It will be removed and"
-    ${EndIf}
-    ${If} $0 == ""                         ; If EnvVar is (now) empty
-      StrCpy $0 $4                         ;   just copy PathString to EnvVar
-      ${If} $6 == 0                        ; If found flag is either 0
-      ${OrIf} $6 == ""                     ; or blank (if EnvVarName is empty)
-        DetailPrint "$1 was empty and has been updated with the target"
-      ${EndIf}
-    ${ElseIf} $2 == "A"                    ;  If Append (and EnvVar is not empty),
-      StrCpy $0 $0;$4                      ;     append PathString
-      ${If} $6 == 1
-        DetailPrint "appended to $1"
-      ${Else}
-        DetailPrint "Target was appended to $1"
-      ${EndIf}
-    ${Else}                                ;  If Prepend (and EnvVar is not empty),
-      StrCpy $0 $4;$0                      ;     prepend PathString
-      ${If} $6 == 1
-        DetailPrint "prepended to $1"
-      ${Else}
-        DetailPrint "Target was prepended to $1"
-      ${EndIf}
-    ${EndIf}
-  ${Else}                                  ; If Action = Remove
-    ${If} $6 == 1                          ;   and we found the target
-      DetailPrint "Target was found and removed from $1"
-    ${Else}
-      DetailPrint "Target was NOT found in $1 (nothing to remove)"
-    ${EndIf}
-    ${If} $0 == ""
-      DetailPrint "$1 is now empty"
-    ${EndIf}
-  ${EndIf}
-
-  ; Step 5:  Update the registry at RegLoc with the updated EnvVar and announce the change
-  ;
-  ClearErrors
-  ${If} $3  == HKLM
-    WriteRegExpandStr ${hklm_all_users} $1 $0     ; Write it in all users section
-  ${ElseIf} $3 == HKCU
-    WriteRegExpandStr ${hkcu_current_user} $1 $0  ; Write it to current user section
-  ${EndIf}
-
-  IfErrors 0 +4
-    MessageBox MB_OK|MB_ICONEXCLAMATION "Could not write updated $1 to $3"
-    DetailPrint "Could not write updated $1 to $3"
-    Goto EnvVarUpdate_Restore_Vars
-
-  ; "Export" our change
-  SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
-
-  EnvVarUpdate_Restore_Vars:
-  ;
-  ; Restore the user's variables and return ResultVar
-  Pop $R0
-  Pop $9
-  Pop $8
-  Pop $7
-  Pop $6
-  Pop $5
-  Pop $4
-  Pop $3
-  Pop $2
-  Pop $1
-  Push $0  ; Push my $0 (ResultVar)
-  Exch
-  Pop $0   ; Restore his $0
-
-FunctionEnd
-
-!macroend   ; EnvVarUpdate UN
-!insertmacro EnvVarUpdate ""
-!insertmacro EnvVarUpdate "un."
-;----------------------------------- EnvVarUpdate end----------------------------------------
-
-!verbose pop
-!endif

vendor/github.com/ethereum/go-ethereum/build/nsis.geth.nsi

@@ -1,70 +0,0 @@
-# Builds a Windows installer with NSIS.
-# It expects the following command line arguments:
-# - OUTPUTFILE, filename of the installer (without extension)
-# - MAJORVERSION, major build version
-# - MINORVERSION, minor build version
-# - BUILDVERSION, build id version
-#
-# The created installer executes the following steps:
-# 1. install geth for all users
-# 2. install optional development tools such as abigen
-# 3. create an uninstaller
-# 4. configures the Windows firewall for geth
-# 5. create geth, attach and uninstall start menu entries
-# 6. configures the registry that allows Windows to manage the package through its platform tools
-# 7. adds the environment system wide variable ETHEREUM_SOCKET
-# 8. adds the install directory to %PATH%
-#
-# Requirements:
-# - NSIS, http://nsis.sourceforge.net/Main_Page
-# - NSIS Large Strings build, http://nsis.sourceforge.net/Special_Builds
-# - SFP, http://nsis.sourceforge.net/NSIS_Simple_Firewall_Plugin (put dll in NSIS\Plugins\x86-ansi)
-#
-# After intalling NSIS extra the NSIS Large Strings build zip and replace the makensis.exe and the
-# files found in Stub.
-#
-# based on: http://nsis.sourceforge.net/A_simple_installer_with_start_menu_shortcut_and_uninstaller
-#
-# TODO:
-# - sign installer
-CRCCheck on
-
-!define GROUPNAME "Ethereum"
-!define APPNAME "Geth"
-!define DESCRIPTION "Official Go implementation of the Ethereum protocol"
-!addplugindir .\
-
-# Require admin rights on NT6+ (When UAC is turned on)
-RequestExecutionLevel admin
-
-# Use LZMA compression
-SetCompressor /SOLID lzma
-
-!include LogicLib.nsh
-!include PathUpdate.nsh
-!include EnvVarUpdate.nsh
-
-!macro VerifyUserIsAdmin
-UserInfo::GetAccountType
-pop $0
-${If} $0 != "admin" # Require admin rights on NT4+
-  messageBox mb_iconstop "Administrator rights required!"
-  setErrorLevel 740 # ERROR_ELEVATION_REQUIRED
-  quit
-${EndIf}
-!macroend
-
-function .onInit
-  # make vars are global for all users since geth is installed global
-  setShellVarContext all
-  !insertmacro VerifyUserIsAdmin
-
-  ${If} ${ARCH} == "amd64"
-    StrCpy $InstDir "$PROGRAMFILES64\${APPNAME}"
-  ${Else}
-    StrCpy $InstDir "$PROGRAMFILES32\${APPNAME}"
-  ${Endif}
-functionEnd
-
-!include install.nsh
-!include uninstall.nsh

vendor/github.com/ethereum/go-ethereum/build/nsis.install.nsh

@@ -1,103 +0,0 @@
-Name "geth ${MAJORVERSION}.${MINORVERSION}.${BUILDVERSION}" # VERSION variables set through command line arguments
-InstallDir "$InstDir"
-OutFile "${OUTPUTFILE}" # set through command line arguments
-
-# Links for "Add/Remove Programs"
-!define HELPURL "https://github.com/ethereum/go-ethereum/issues"
-!define UPDATEURL "https://github.com/ethereum/go-ethereum/releases"
-!define ABOUTURL "https://github.com/ethereum/go-ethereum#ethereum-go"
-!define /date NOW "%Y%m%d"
-
-PageEx license
-  LicenseData {{.License}}
-PageExEnd
-
-# Install geth binary
-Section "Geth" GETH_IDX
-  SetOutPath $INSTDIR
-  file {{.Geth}}
-
-  # Create start menu launcher
-  createDirectory "$SMPROGRAMS\${APPNAME}"
-  createShortCut "$SMPROGRAMS\${APPNAME}\${APPNAME}.lnk" "$INSTDIR\geth.exe" "--fast" "--cache=512"
-  createShortCut "$SMPROGRAMS\${APPNAME}\Attach.lnk" "$INSTDIR\geth.exe" "attach" "" ""
-  createShortCut "$SMPROGRAMS\${APPNAME}\Uninstall.lnk" "$INSTDIR\uninstall.exe" "" "" ""
-
-  # Firewall - remove rules (if exists)
-  SimpleFC::AdvRemoveRule "Geth incoming peers (TCP:30303)"
-  SimpleFC::AdvRemoveRule "Geth outgoing peers (TCP:30303)"
-  SimpleFC::AdvRemoveRule "Geth UDP discovery (UDP:30303)"
-
-  # Firewall - add rules
-  SimpleFC::AdvAddRule "Geth incoming peers (TCP:30303)" ""  6 1 1 2147483647 1 "$INSTDIR\geth.exe" "" "" "Ethereum" 30303 "" "" ""
-  SimpleFC::AdvAddRule "Geth outgoing peers (TCP:30303)" ""  6 2 1 2147483647 1 "$INSTDIR\geth.exe" "" "" "Ethereum" "" 30303 "" ""
-  SimpleFC::AdvAddRule "Geth UDP discovery (UDP:30303)" "" 17 2 1 2147483647 1 "$INSTDIR\geth.exe" "" "" "Ethereum" "" 30303 "" ""
-
-  # Set default IPC endpoint (https://github.com/ethereum/EIPs/issues/147)
-  ${EnvVarUpdate} $0 "ETHEREUM_SOCKET" "R" "HKLM" "\\.\pipe\geth.ipc"
-  ${EnvVarUpdate} $0 "ETHEREUM_SOCKET" "A" "HKLM" "\\.\pipe\geth.ipc"
-
-  # Add instdir to PATH
-  Push "$INSTDIR"
-  Call AddToPath
-SectionEnd
-
-# Install optional develop tools.
-Section /o "Development tools" DEV_TOOLS_IDX
-  SetOutPath $INSTDIR
-  {{range .DevTools}}file {{.}}
-  {{end}}
-SectionEnd
-
-# Return on top of stack the total size (as DWORD) of the selected/installed sections.
-Var GetInstalledSize.total
-Function GetInstalledSize
-  StrCpy $GetInstalledSize.total 0
-
-  ${if} ${SectionIsSelected} ${GETH_IDX}
-    SectionGetSize ${GETH_IDX} $0
-    IntOp $GetInstalledSize.total $GetInstalledSize.total + $0
-  ${endif}
-
-  ${if} ${SectionIsSelected} ${DEV_TOOLS_IDX}
-    SectionGetSize ${DEV_TOOLS_IDX} $0
-    IntOp $GetInstalledSize.total $GetInstalledSize.total + $0
-  ${endif}
-
-  IntFmt $GetInstalledSize.total "0x%08X" $GetInstalledSize.total
-  Push $GetInstalledSize.total
-FunctionEnd
-
-# Write registry, Windows uses these values in various tools such as add/remove program.
-# PowerShell: Get-ItemProperty HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object DisplayName, InstallLocation, InstallDate | Format-Table –AutoSize
-function .onInstSuccess
-  # Save information in registry in HKEY_LOCAL_MACHINE branch, Windows add/remove functionality depends on this
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "DisplayName" "${GROUPNAME} - ${APPNAME} - ${DESCRIPTION}"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "UninstallString" "$\"$INSTDIR\uninstall.exe$\""
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "QuietUninstallString" "$\"$INSTDIR\uninstall.exe$\" /S"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "InstallLocation" "$INSTDIR"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "InstallDate" "${NOW}"
-  # Wait for Alex
-  #WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "DisplayIcon" "$\"$INSTDIR\logo.ico$\""
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "Publisher" "${GROUPNAME}"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "HelpLink" "${HELPURL}"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "URLUpdateInfo" "${UPDATEURL}"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "URLInfoAbout" "${ABOUTURL}"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "DisplayVersion" "${MAJORVERSION}.${MINORVERSION}.${BUILDVERSION}"
-  WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "VersionMajor" ${MAJORVERSION}
-  WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "VersionMinor" ${MINORVERSION}
-  # There is no option for modifying or repairing the install
-  WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "NoModify" 1
-  WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "NoRepair" 1
-
-  Call GetInstalledSize
-  Pop $0
-  WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}" "EstimatedSize" "$0"
-
-  # Create uninstaller
-  writeUninstaller "$INSTDIR\uninstall.exe"
-functionEnd
-
-Page components
-Page directory
-Page instfiles

vendor/github.com/ethereum/go-ethereum/build/nsis.pathupdate.nsh

@@ -1,153 +0,0 @@
-!include "WinMessages.nsh"
-
-; see https://support.microsoft.com/en-us/kb/104011
-!define Environ 'HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"'
-; HKEY_LOCAL_MACHINE = 0x80000002
-
-; AddToPath - Appends dir to PATH
-;   (does not work on Win9x/ME)
-;
-; Usage:
-;   Push "dir"
-;   Call AddToPath
-Function AddToPath
-  Exch $0
-  Push $1
-  Push $2
-  Push $3
-  Push $4
-
-  ; NSIS ReadRegStr returns empty string on string overflow
-  ; Native calls are used here to check actual length of PATH
-  ; $4 = RegOpenKey(HKEY_LOCAL_MACHINE, "SYSTEM\CurrentControlSet\Control\Session Manager\Environment", &$3)
-  System::Call "advapi32::RegOpenKey(i 0x80000002, t'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', *i.r3) i.r4"
-  IntCmp $4 0 0 done done
-
-  ; $4 = RegQueryValueEx($3, "PATH", (DWORD*)0, (DWORD*)0, &$1, ($2=NSIS_MAX_STRLEN, &$2))
-  ; RegCloseKey($3)
-  System::Call "advapi32::RegQueryValueEx(i $3, t'PATH', i 0, i 0, t.r1, *i ${NSIS_MAX_STRLEN} r2) i.r4"
-  System::Call "advapi32::RegCloseKey(i $3)"
-
-  IntCmp $4 234 0 +4 +4 ; $4 == ERROR_MORE_DATA
-    DetailPrint "AddToPath: original length $2 > ${NSIS_MAX_STRLEN}"
-    MessageBox MB_OK "PATH not updated, original length $2 > ${NSIS_MAX_STRLEN}"
-    Goto done
-
-  IntCmp $4 0 +5 ; $4 != NO_ERROR
-    IntCmp $4 2 +3 ; $4 != ERROR_FILE_NOT_FOUND
-      DetailPrint "AddToPath: unexpected error code $4"
-      Goto done
-    StrCpy $1 ""
-
-  ; Check if already in PATH
-  Push "$1;"
-  Push "$0;"
-  Call StrStr
-  Pop $2
-  StrCmp $2 "" 0 done
-  Push "$1;"
-  Push "$0\;"
-  Call StrStr
-  Pop $2
-  StrCmp $2 "" 0 done
-
-  ; Prevent NSIS string overflow
-  StrLen $2 $0
-  StrLen $3 $1
-  IntOp $2 $2 + $3
-  IntOp $2 $2 + 2 ; $2 = strlen(dir) + strlen(PATH) + sizeof(";")
-  IntCmp $2 ${NSIS_MAX_STRLEN} +4 +4 0
-    DetailPrint "AddToPath: new length $2 > ${NSIS_MAX_STRLEN}"
-    MessageBox MB_OK "PATH not updated, new length $2 > ${NSIS_MAX_STRLEN}."
-    Goto done
-
-  ; Append dir to PATH
-  DetailPrint "Add to PATH: $0"
-  StrCpy $2 $1 1 -1
-  StrCmp $2 ";" 0 +2
-    StrCpy $1 $1 -1 ; remove trailing ';'
-  StrCmp $1 "" +2   ; no leading ';'
-    StrCpy $0 "$1;$0"
-  
-  WriteRegExpandStr ${Environ} "PATH" $0
-  SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
-
-done:
-  Pop $4
-  Pop $3
-  Pop $2
-  Pop $1
-  Pop $0
-FunctionEnd
-
-
-; RemoveFromPath - Removes dir from PATH
-;
-; Usage:
-;   Push "dir"
-;   Call RemoveFromPath
-Function un.RemoveFromPath
-  Exch $0
-  Push $1
-  Push $2
-  Push $3
-  Push $4
-  Push $5
-  Push $6
-
-  ; NSIS ReadRegStr returns empty string on string overflow
-  ; Native calls are used here to check actual length of PATH
-  ; $4 = RegOpenKey(HKEY_LOCAL_MACHINE, "SYSTEM\CurrentControlSet\Control\Session Manager\Environment", &$3)
-  System::Call "advapi32::RegOpenKey(i 0x80000002, t'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', *i.r3) i.r4"
-  IntCmp $4 0 0 done done
-
-  ; $4 = RegQueryValueEx($3, "PATH", (DWORD*)0, (DWORD*)0, &$1, ($2=NSIS_MAX_STRLEN, &$2))
-  ; RegCloseKey($3)
-  System::Call "advapi32::RegQueryValueEx(i $3, t'PATH', i 0, i 0, t.r1, *i ${NSIS_MAX_STRLEN} r2) i.r4"
-  System::Call "advapi32::RegCloseKey(i $3)"
-
-  IntCmp $4 234 0 +4 +4 ; $4 == ERROR_MORE_DATA
-    DetailPrint "RemoveFromPath: original length $2 > ${NSIS_MAX_STRLEN}"
-    MessageBox MB_OK "PATH not updated, original length $2 > ${NSIS_MAX_STRLEN}"
-    Goto done
-
-  IntCmp $4 0 +5 ; $4 != NO_ERROR
-    IntCmp $4 2 +3 ; $4 != ERROR_FILE_NOT_FOUND
-      DetailPrint "RemoveFromPath: unexpected error code $4"
-      Goto done
-    StrCpy $1 ""
-
-  ; length < ${NSIS_MAX_STRLEN} -> ReadRegStr can be used
-  ReadRegStr $1 ${Environ} "PATH"
-  StrCpy $5 $1 1 -1
-  StrCmp $5 ";" +2
-  StrCpy $1 "$1;" ; ensure trailing ';'
-  Push $1
-  Push "$0;"
-  Call un.StrStr
-  Pop $2 ; pos of our dir
-  StrCmp $2 "" done
-
-  DetailPrint "Remove from PATH: $0"
-  StrLen $3 "$0;"
-  StrLen $4 $2
-  StrCpy $5 $1 -$4 ; $5 is now the part before the path to remove
-  StrCpy $6 $2 "" $3 ; $6 is now the part after the path to remove
-  StrCpy $3 "$5$6"
-  StrCpy $5 $3 1 -1
-  StrCmp $5 ";" 0 +2
-    StrCpy $3 $3 -1 ; remove trailing ';'
-  WriteRegExpandStr ${Environ} "PATH" $3
-  SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
-
-done:
-  Pop $6
-  Pop $5
-  Pop $4
-  Pop $3
-  Pop $2
-  Pop $1
-  Pop $0
-FunctionEnd
- 
-

vendor/github.com/ethereum/go-ethereum/build/nsis.uninstall.nsh

@@ -1,33 +0,0 @@
-Section "Uninstall"
-  # uninstall for all users
-  setShellVarContext all
-
-  # Delete (optionally) installed files
-  {{range $}}Delete $INSTDIR\{{.}}
-  {{end}}
-  Delete $INSTDIR\uninstall.exe
-
-  # Delete install directory
-  rmDir $INSTDIR
-
-  # Delete start menu launcher
-  Delete "$SMPROGRAMS\${APPNAME}\${APPNAME}.lnk"
-  Delete "$SMPROGRAMS\${APPNAME}\Attach.lnk"
-  Delete "$SMPROGRAMS\${APPNAME}\Uninstall.lnk"
-  rmDir "$SMPROGRAMS\${APPNAME}"
-
-  # Firewall - remove rules if exists
-  SimpleFC::AdvRemoveRule "Geth incoming peers (TCP:30303)"
-  SimpleFC::AdvRemoveRule "Geth outgoing peers (TCP:30303)"
-  SimpleFC::AdvRemoveRule "Geth UDP discovery (UDP:30303)"
-
-  # Remove IPC endpoint (https://github.com/ethereum/EIPs/issues/147)
-  ${un.EnvVarUpdate} $0 "ETHEREUM_SOCKET" "R" "HKLM" "\\.\pipe\geth.ipc"
-
-  # Remove install directory from PATH
-  Push "$INSTDIR"
-  Call un.RemoveFromPath
-
-  # Cleanup registry (deletes all sub keys)
-  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${GROUPNAME} ${APPNAME}"
-SectionEnd

vendor/github.com/ethereum/go-ethereum/build/pod.podspec

@@ -1,22 +0,0 @@
-Pod::Spec.new do |spec|
-  spec.name         = 'Geth'
-  spec.version      = '{{.Version}}'
-  spec.license      = { :type => 'GNU Lesser General Public License, Version 3.0' }
-  spec.homepage     = 'https://github.com/ethereum/go-ethereum'
-  spec.authors      = { {{range .Contributors}}
-		'{{.Name}}' => '{{.Email}}',{{end}}
-	}
-  spec.summary      = 'iOS Ethereum Client'
-  spec.source       = { :git => 'https://github.com/ethereum/go-ethereum.git', :commit => '{{.Commit}}' }
-
-	spec.platform = :ios
-  spec.ios.deployment_target  = '9.0'
-	spec.ios.vendored_frameworks = 'Frameworks/Geth.framework'
-
-	spec.prepare_command = <<-CMD
-    curl https://gethstore.blob.core.windows.net/builds/{{.Archive}}.tar.gz | tar -xvz
-    mkdir Frameworks
-    mv {{.Archive}}/Geth.framework Frameworks
-    rm -rf {{.Archive}}
-  CMD
-end

vendor/github.com/ethereum/go-ethereum/build/update-license.go

@@ -1,396 +0,0 @@
-// +build none
-
-/*
-This command generates GPL license headers on top of all source files.
-You can run it once per month, before cutting a release or just
-whenever you feel like it.
-
-	go run update-license.go
-
-All authors (people who have contributed code) are listed in the
-AUTHORS file. The author names are mapped and deduplicated using the
-.mailmap file. You can use .mailmap to set the canonical name and
-address for each author. See git-shortlog(1) for an explanation of the
-.mailmap format.
-
-Please review the resulting diff to check whether the correct
-copyright assignments are performed.
-*/
-
-package main
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"regexp"
-	"runtime"
-	"sort"
-	"strconv"
-	"strings"
-	"sync"
-	"text/template"
-	"time"
-)
-
-var (
-	// only files with these extensions will be considered
-	extensions = []string{".go", ".js", ".qml"}
-
-	// paths with any of these prefixes will be skipped
-	skipPrefixes = []string{
-		// boring stuff
-		"vendor/", "tests/testdata/", "build/",
-		// don't relicense vendored sources
-		"cmd/internal/browser",
-		"consensus/ethash/xor.go",
-		"crypto/bn256/",
-		"crypto/ecies/",
-		"crypto/secp256k1/curve.go",
-		"crypto/sha3/",
-		"internal/jsre/deps",
-		"log/",
-		// don't license generated files
-		"contracts/chequebook/contract/",
-		"contracts/ens/contract/",
-		"contracts/release/contract.go",
-	}
-
-	// paths with this prefix are licensed as GPL. all other files are LGPL.
-	gplPrefixes = []string{"cmd/"}
-
-	// this regexp must match the entire license comment at the
-	// beginning of each file.
-	licenseCommentRE = regexp.MustCompile(`^//\s*(Copyright|This file is part of).*?\n(?://.*?\n)*\n*`)
-
-	// this text appears at the start of AUTHORS
-	authorsFileHeader = "# This is the official list of go-ethereum authors for copyright purposes.\n\n"
-)
-
-// this template generates the license comment.
-// its input is an info structure.
-var licenseT = template.Must(template.New("").Parse(`
-// Copyright {{.Year}} The go-ethereum Authors
-// This file is part of {{.Whole false}}.
-//
-// {{.Whole true}} is free software: you can redistribute it and/or modify
-// it under the terms of the GNU {{.License}} as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// {{.Whole true}} 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 {{.License}} for more details.
-//
-// You should have received a copy of the GNU {{.License}}
-// along with {{.Whole false}}. If not, see <http://www.gnu.org/licenses/>.
-
-`[1:]))
-
-type info struct {
-	file string
-	Year int64
-}
-
-func (i info) License() string {
-	if i.gpl() {
-		return "General Public License"
-	}
-	return "Lesser General Public License"
-}
-
-func (i info) ShortLicense() string {
-	if i.gpl() {
-		return "GPL"
-	}
-	return "LGPL"
-}
-
-func (i info) Whole(startOfSentence bool) string {
-	if i.gpl() {
-		return "go-ethereum"
-	}
-	if startOfSentence {
-		return "The go-ethereum library"
-	}
-	return "the go-ethereum library"
-}
-
-func (i info) gpl() bool {
-	for _, p := range gplPrefixes {
-		if strings.HasPrefix(i.file, p) {
-			return true
-		}
-	}
-	return false
-}
-
-func main() {
-	var (
-		files = getFiles()
-		filec = make(chan string)
-		infoc = make(chan *info, 20)
-		wg    sync.WaitGroup
-	)
-
-	writeAuthors(files)
-
-	go func() {
-		for _, f := range files {
-			filec <- f
-		}
-		close(filec)
-	}()
-	for i := runtime.NumCPU(); i >= 0; i-- {
-		// getting file info is slow and needs to be parallel.
-		// it traverses git history for each file.
-		wg.Add(1)
-		go getInfo(filec, infoc, &wg)
-	}
-	go func() {
-		wg.Wait()
-		close(infoc)
-	}()
-	writeLicenses(infoc)
-}
-
-func skipFile(path string) bool {
-	if strings.Contains(path, "/testdata/") {
-		return true
-	}
-	for _, p := range skipPrefixes {
-		if strings.HasPrefix(path, p) {
-			return true
-		}
-	}
-	return false
-}
-
-func getFiles() []string {
-	cmd := exec.Command("git", "ls-tree", "-r", "--name-only", "HEAD")
-	var files []string
-	err := doLines(cmd, func(line string) {
-		if skipFile(line) {
-			return
-		}
-		ext := filepath.Ext(line)
-		for _, wantExt := range extensions {
-			if ext == wantExt {
-				goto keep
-			}
-		}
-		return
-	keep:
-		files = append(files, line)
-	})
-	if err != nil {
-		log.Fatal("error getting files:", err)
-	}
-	return files
-}
-
-var authorRegexp = regexp.MustCompile(`\s*[0-9]+\s*(.*)`)
-
-func gitAuthors(files []string) []string {
-	cmds := []string{"shortlog", "-s", "-n", "-e", "HEAD", "--"}
-	cmds = append(cmds, files...)
-	cmd := exec.Command("git", cmds...)
-	var authors []string
-	err := doLines(cmd, func(line string) {
-		m := authorRegexp.FindStringSubmatch(line)
-		if len(m) > 1 {
-			authors = append(authors, m[1])
-		}
-	})
-	if err != nil {
-		log.Fatalln("error getting authors:", err)
-	}
-	return authors
-}
-
-func readAuthors() []string {
-	content, err := ioutil.ReadFile("AUTHORS")
-	if err != nil && !os.IsNotExist(err) {
-		log.Fatalln("error reading AUTHORS:", err)
-	}
-	var authors []string
-	for _, a := range bytes.Split(content, []byte("\n")) {
-		if len(a) > 0 && a[0] != '#' {
-			authors = append(authors, string(a))
-		}
-	}
-	// Retranslate existing authors through .mailmap.
-	// This should catch email address changes.
-	authors = mailmapLookup(authors)
-	return authors
-}
-
-func mailmapLookup(authors []string) []string {
-	if len(authors) == 0 {
-		return nil
-	}
-	cmds := []string{"check-mailmap", "--"}
-	cmds = append(cmds, authors...)
-	cmd := exec.Command("git", cmds...)
-	var translated []string
-	err := doLines(cmd, func(line string) {
-		translated = append(translated, line)
-	})
-	if err != nil {
-		log.Fatalln("error translating authors:", err)
-	}
-	return translated
-}
-
-func writeAuthors(files []string) {
-	merge := make(map[string]bool)
-	// Add authors that Git reports as contributorxs.
-	// This is the primary source of author information.
-	for _, a := range gitAuthors(files) {
-		merge[a] = true
-	}
-	// Add existing authors from the file. This should ensure that we
-	// never lose authors, even if Git stops listing them. We can also
-	// add authors manually this way.
-	for _, a := range readAuthors() {
-		merge[a] = true
-	}
-	// Write sorted list of authors back to the file.
-	var result []string
-	for a := range merge {
-		result = append(result, a)
-	}
-	sort.Strings(result)
-	content := new(bytes.Buffer)
-	content.WriteString(authorsFileHeader)
-	for _, a := range result {
-		content.WriteString(a)
-		content.WriteString("\n")
-	}
-	fmt.Println("writing AUTHORS")
-	if err := ioutil.WriteFile("AUTHORS", content.Bytes(), 0644); err != nil {
-		log.Fatalln(err)
-	}
-}
-
-func getInfo(files <-chan string, out chan<- *info, wg *sync.WaitGroup) {
-	for file := range files {
-		stat, err := os.Lstat(file)
-		if err != nil {
-			fmt.Printf("ERROR %s: %v\n", file, err)
-			continue
-		}
-		if !stat.Mode().IsRegular() {
-			continue
-		}
-		if isGenerated(file) {
-			continue
-		}
-		info, err := fileInfo(file)
-		if err != nil {
-			fmt.Printf("ERROR %s: %v\n", file, err)
-			continue
-		}
-		out <- info
-	}
-	wg.Done()
-}
-
-func isGenerated(file string) bool {
-	fd, err := os.Open(file)
-	if err != nil {
-		return false
-	}
-	defer fd.Close()
-	buf := make([]byte, 2048)
-	n, _ := fd.Read(buf)
-	buf = buf[:n]
-	for _, l := range bytes.Split(buf, []byte("\n")) {
-		if bytes.HasPrefix(l, []byte("// Code generated")) {
-			return true
-		}
-	}
-	return false
-}
-
-// fileInfo finds the lowest year in which the given file was committed.
-func fileInfo(file string) (*info, error) {
-	info := &info{file: file, Year: int64(time.Now().Year())}
-	cmd := exec.Command("git", "log", "--follow", "--find-renames=80", "--find-copies=80", "--pretty=format:%ai", "--", file)
-	err := doLines(cmd, func(line string) {
-		y, err := strconv.ParseInt(line[:4], 10, 64)
-		if err != nil {
-			fmt.Printf("cannot parse year: %q", line[:4])
-		}
-		if y < info.Year {
-			info.Year = y
-		}
-	})
-	return info, err
-}
-
-func writeLicenses(infos <-chan *info) {
-	for i := range infos {
-		writeLicense(i)
-	}
-}
-
-func writeLicense(info *info) {
-	fi, err := os.Stat(info.file)
-	if os.IsNotExist(err) {
-		fmt.Println("skipping (does not exist)", info.file)
-		return
-	}
-	if err != nil {
-		log.Fatalf("error stat'ing %s: %v\n", info.file, err)
-	}
-	content, err := ioutil.ReadFile(info.file)
-	if err != nil {
-		log.Fatalf("error reading %s: %v\n", info.file, err)
-	}
-	// Construct new file content.
-	buf := new(bytes.Buffer)
-	licenseT.Execute(buf, info)
-	if m := licenseCommentRE.FindIndex(content); m != nil && m[0] == 0 {
-		buf.Write(content[:m[0]])
-		buf.Write(content[m[1]:])
-	} else {
-		buf.Write(content)
-	}
-	// Write it to the file.
-	if bytes.Equal(content, buf.Bytes()) {
-		fmt.Println("skipping (no changes)", info.file)
-		return
-	}
-	fmt.Println("writing", info.ShortLicense(), info.file)
-	if err := ioutil.WriteFile(info.file, buf.Bytes(), fi.Mode()); err != nil {
-		log.Fatalf("error writing %s: %v", info.file, err)
-	}
-}
-
-func doLines(cmd *exec.Cmd, f func(string)) error {
-	stdout, err := cmd.StdoutPipe()
-	if err != nil {
-		return err
-	}
-	if err := cmd.Start(); err != nil {
-		return err
-	}
-	s := bufio.NewScanner(stdout)
-	for s.Scan() {
-		f(s.Text())
-	}
-	if s.Err() != nil {
-		return s.Err()
-	}
-	if err := cmd.Wait(); err != nil {
-		return fmt.Errorf("%v (for %s)", err, strings.Join(cmd.Args, " "))
-	}
-	return nil
-}

vendor/github.com/ethereum/go-ethereum/cmd/evm/json_logger.go

@@ -40,7 +40,7 @@ func (l *JSONLogger) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cos
 	log := vm.StructLog{
 		Pc:         pc,
 		Op:         op,
-		Gas:        gas + cost,
+		Gas:        gas,
 		GasCost:    cost,
 		MemorySize: memory.Len(),
 		Storage:    nil,

vendor/github.com/ethereum/go-ethereum/cmd/geth/chaincmd.go

@@ -31,7 +31,9 @@ import (
 	"github.com/ethereum/go-ethereum/core"
 	"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/ethdb"
+	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/trie"
 	"github.com/syndtr/goleveldb/leveldb/util"
@@ -71,7 +73,7 @@ It expects the genesis file as argument.`,
 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, 
+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{
@@ -90,6 +92,23 @@ 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.`,
+	}
+	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),
@@ -268,6 +287,54 @@ func exportChain(ctx *cli.Context) error {
 	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")
+	}
+	// Initialize a new chain for the running node to sync into
+	stack := makeFullNode(ctx)
+	chain, chainDb := utils.MakeChain(ctx, stack)
+
+	syncmode := *utils.GlobalTextMarshaler(ctx, utils.SyncModeFlag.Name).(*downloader.SyncMode)
+	dl := downloader.New(syncmode, chainDb, new(event.TypeMux), chain, nil, nil)
+
+	// Create a source peer to satisfy downloader requests from
+	db, err := ethdb.NewLDBDatabase(ctx.Args().First(), ctx.GlobalInt(utils.CacheFlag.Name), 256)
+	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 = chainDb.(*ethdb.LDBDatabase).LDB().CompactRange(util.Range{}); 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, _ := makeConfigNode(ctx)
 

vendor/github.com/ethereum/go-ethereum/cmd/geth/main.go

@@ -146,6 +146,7 @@ func init() {
 		initCommand,
 		importCommand,
 		exportCommand,
+		copydbCommand,
 		removedbCommand,
 		dumpCommand,
 		// See monitorcmd.go:

vendor/github.com/ethereum/go-ethereum/cmd/p2psim/main.go

@@ -0,0 +1,414 @@
+// p2psim provides a command-line client for a simulation HTTP API.
+//
+// Here is an example of creating a 2 node network with the first node
+// connected to the second:
+//
+//     $ p2psim node create
+//     Created node01
+//
+//     $ p2psim node start node01
+//     Started node01
+//
+//     $ p2psim node create
+//     Created node02
+//
+//     $ p2psim node start node02
+//     Started node02
+//
+//     $ p2psim node connect node01 node02
+//     Connected node01 to node02
+//
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"text/tabwriter"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/simulations"
+	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
+	"github.com/ethereum/go-ethereum/rpc"
+	"gopkg.in/urfave/cli.v1"
+)
+
+var client *simulations.Client
+
+func main() {
+	app := cli.NewApp()
+	app.Usage = "devp2p simulation command-line client"
+	app.Flags = []cli.Flag{
+		cli.StringFlag{
+			Name:   "api",
+			Value:  "http://localhost:8888",
+			Usage:  "simulation API URL",
+			EnvVar: "P2PSIM_API_URL",
+		},
+	}
+	app.Before = func(ctx *cli.Context) error {
+		client = simulations.NewClient(ctx.GlobalString("api"))
+		return nil
+	}
+	app.Commands = []cli.Command{
+		{
+			Name:   "show",
+			Usage:  "show network information",
+			Action: showNetwork,
+		},
+		{
+			Name:   "events",
+			Usage:  "stream network events",
+			Action: streamNetwork,
+			Flags: []cli.Flag{
+				cli.BoolFlag{
+					Name:  "current",
+					Usage: "get existing nodes and conns first",
+				},
+				cli.StringFlag{
+					Name:  "filter",
+					Value: "",
+					Usage: "message filter",
+				},
+			},
+		},
+		{
+			Name:   "snapshot",
+			Usage:  "create a network snapshot to stdout",
+			Action: createSnapshot,
+		},
+		{
+			Name:   "load",
+			Usage:  "load a network snapshot from stdin",
+			Action: loadSnapshot,
+		},
+		{
+			Name:   "node",
+			Usage:  "manage simulation nodes",
+			Action: listNodes,
+			Subcommands: []cli.Command{
+				{
+					Name:   "list",
+					Usage:  "list nodes",
+					Action: listNodes,
+				},
+				{
+					Name:   "create",
+					Usage:  "create a node",
+					Action: createNode,
+					Flags: []cli.Flag{
+						cli.StringFlag{
+							Name:  "name",
+							Value: "",
+							Usage: "node name",
+						},
+						cli.StringFlag{
+							Name:  "services",
+							Value: "",
+							Usage: "node services (comma separated)",
+						},
+						cli.StringFlag{
+							Name:  "key",
+							Value: "",
+							Usage: "node private key (hex encoded)",
+						},
+					},
+				},
+				{
+					Name:      "show",
+					ArgsUsage: "<node>",
+					Usage:     "show node information",
+					Action:    showNode,
+				},
+				{
+					Name:      "start",
+					ArgsUsage: "<node>",
+					Usage:     "start a node",
+					Action:    startNode,
+				},
+				{
+					Name:      "stop",
+					ArgsUsage: "<node>",
+					Usage:     "stop a node",
+					Action:    stopNode,
+				},
+				{
+					Name:      "connect",
+					ArgsUsage: "<node> <peer>",
+					Usage:     "connect a node to a peer node",
+					Action:    connectNode,
+				},
+				{
+					Name:      "disconnect",
+					ArgsUsage: "<node> <peer>",
+					Usage:     "disconnect a node from a peer node",
+					Action:    disconnectNode,
+				},
+				{
+					Name:      "rpc",
+					ArgsUsage: "<node> <method> [<args>]",
+					Usage:     "call a node RPC method",
+					Action:    rpcNode,
+					Flags: []cli.Flag{
+						cli.BoolFlag{
+							Name:  "subscribe",
+							Usage: "method is a subscription",
+						},
+					},
+				},
+			},
+		},
+	}
+	app.Run(os.Args)
+}
+
+func showNetwork(ctx *cli.Context) error {
+	if len(ctx.Args()) != 0 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	network, err := client.GetNetwork()
+	if err != nil {
+		return err
+	}
+	w := tabwriter.NewWriter(ctx.App.Writer, 1, 2, 2, ' ', 0)
+	defer w.Flush()
+	fmt.Fprintf(w, "NODES\t%d\n", len(network.Nodes))
+	fmt.Fprintf(w, "CONNS\t%d\n", len(network.Conns))
+	return nil
+}
+
+func streamNetwork(ctx *cli.Context) error {
+	if len(ctx.Args()) != 0 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	events := make(chan *simulations.Event)
+	sub, err := client.SubscribeNetwork(events, simulations.SubscribeOpts{
+		Current: ctx.Bool("current"),
+		Filter:  ctx.String("filter"),
+	})
+	if err != nil {
+		return err
+	}
+	defer sub.Unsubscribe()
+	enc := json.NewEncoder(ctx.App.Writer)
+	for {
+		select {
+		case event := <-events:
+			if err := enc.Encode(event); err != nil {
+				return err
+			}
+		case err := <-sub.Err():
+			return err
+		}
+	}
+}
+
+func createSnapshot(ctx *cli.Context) error {
+	if len(ctx.Args()) != 0 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	snap, err := client.CreateSnapshot()
+	if err != nil {
+		return err
+	}
+	return json.NewEncoder(os.Stdout).Encode(snap)
+}
+
+func loadSnapshot(ctx *cli.Context) error {
+	if len(ctx.Args()) != 0 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	snap := &simulations.Snapshot{}
+	if err := json.NewDecoder(os.Stdin).Decode(snap); err != nil {
+		return err
+	}
+	return client.LoadSnapshot(snap)
+}
+
+func listNodes(ctx *cli.Context) error {
+	if len(ctx.Args()) != 0 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodes, err := client.GetNodes()
+	if err != nil {
+		return err
+	}
+	w := tabwriter.NewWriter(ctx.App.Writer, 1, 2, 2, ' ', 0)
+	defer w.Flush()
+	fmt.Fprintf(w, "NAME\tPROTOCOLS\tID\n")
+	for _, node := range nodes {
+		fmt.Fprintf(w, "%s\t%s\t%s\n", node.Name, strings.Join(protocolList(node), ","), node.ID)
+	}
+	return nil
+}
+
+func protocolList(node *p2p.NodeInfo) []string {
+	protos := make([]string, 0, len(node.Protocols))
+	for name := range node.Protocols {
+		protos = append(protos, name)
+	}
+	return protos
+}
+
+func createNode(ctx *cli.Context) error {
+	if len(ctx.Args()) != 0 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	config := &adapters.NodeConfig{
+		Name: ctx.String("name"),
+	}
+	if key := ctx.String("key"); key != "" {
+		privKey, err := crypto.HexToECDSA(key)
+		if err != nil {
+			return err
+		}
+		config.ID = discover.PubkeyID(&privKey.PublicKey)
+		config.PrivateKey = privKey
+	}
+	if services := ctx.String("services"); services != "" {
+		config.Services = strings.Split(services, ",")
+	}
+	node, err := client.CreateNode(config)
+	if err != nil {
+		return err
+	}
+	fmt.Fprintln(ctx.App.Writer, "Created", node.Name)
+	return nil
+}
+
+func showNode(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 1 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodeName := args[0]
+	node, err := client.GetNode(nodeName)
+	if err != nil {
+		return err
+	}
+	w := tabwriter.NewWriter(ctx.App.Writer, 1, 2, 2, ' ', 0)
+	defer w.Flush()
+	fmt.Fprintf(w, "NAME\t%s\n", node.Name)
+	fmt.Fprintf(w, "PROTOCOLS\t%s\n", strings.Join(protocolList(node), ","))
+	fmt.Fprintf(w, "ID\t%s\n", node.ID)
+	fmt.Fprintf(w, "ENODE\t%s\n", node.Enode)
+	for name, proto := range node.Protocols {
+		fmt.Fprintln(w)
+		fmt.Fprintf(w, "--- PROTOCOL INFO: %s\n", name)
+		fmt.Fprintf(w, "%v\n", proto)
+		fmt.Fprintf(w, "---\n")
+	}
+	return nil
+}
+
+func startNode(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 1 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodeName := args[0]
+	if err := client.StartNode(nodeName); err != nil {
+		return err
+	}
+	fmt.Fprintln(ctx.App.Writer, "Started", nodeName)
+	return nil
+}
+
+func stopNode(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 1 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodeName := args[0]
+	if err := client.StopNode(nodeName); err != nil {
+		return err
+	}
+	fmt.Fprintln(ctx.App.Writer, "Stopped", nodeName)
+	return nil
+}
+
+func connectNode(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 2 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodeName := args[0]
+	peerName := args[1]
+	if err := client.ConnectNode(nodeName, peerName); err != nil {
+		return err
+	}
+	fmt.Fprintln(ctx.App.Writer, "Connected", nodeName, "to", peerName)
+	return nil
+}
+
+func disconnectNode(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) != 2 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodeName := args[0]
+	peerName := args[1]
+	if err := client.DisconnectNode(nodeName, peerName); err != nil {
+		return err
+	}
+	fmt.Fprintln(ctx.App.Writer, "Disconnected", nodeName, "from", peerName)
+	return nil
+}
+
+func rpcNode(ctx *cli.Context) error {
+	args := ctx.Args()
+	if len(args) < 2 {
+		return cli.ShowCommandHelp(ctx, ctx.Command.Name)
+	}
+	nodeName := args[0]
+	method := args[1]
+	rpcClient, err := client.RPCClient(context.Background(), nodeName)
+	if err != nil {
+		return err
+	}
+	if ctx.Bool("subscribe") {
+		return rpcSubscribe(rpcClient, ctx.App.Writer, method, args[3:]...)
+	}
+	var result interface{}
+	params := make([]interface{}, len(args[3:]))
+	for i, v := range args[3:] {
+		params[i] = v
+	}
+	if err := rpcClient.Call(&result, method, params...); err != nil {
+		return err
+	}
+	return json.NewEncoder(ctx.App.Writer).Encode(result)
+}
+
+func rpcSubscribe(client *rpc.Client, out io.Writer, method string, args ...string) error {
+	parts := strings.SplitN(method, "_", 2)
+	namespace := parts[0]
+	method = parts[1]
+	ch := make(chan interface{})
+	subArgs := make([]interface{}, len(args)+1)
+	subArgs[0] = method
+	for i, v := range args {
+		subArgs[i+1] = v
+	}
+	sub, err := client.Subscribe(context.Background(), namespace, ch, subArgs...)
+	if err != nil {
+		return err
+	}
+	defer sub.Unsubscribe()
+	enc := json.NewEncoder(out)
+	for {
+		select {
+		case v := <-ch:
+			if err := enc.Encode(v); err != nil {
+				return err
+			}
+		case err := <-sub.Err():
+			return err
+		}
+	}
+}

vendor/github.com/ethereum/go-ethereum/cmd/puppeth/wizard.go

@@ -161,6 +161,28 @@ func (w *wizard) readDefaultInt(def int) int {
 	}
 }
 
+// readDefaultBigInt reads a single line from stdin, trimming if from spaces,
+// enforcing it to parse into a big integer. If an empty line is entered, the
+// default value is returned.
+func (w *wizard) readDefaultBigInt(def *big.Int) *big.Int {
+	for {
+		fmt.Printf("> ")
+		text, err := w.in.ReadString('\n')
+		if err != nil {
+			log.Crit("Failed to read user input", "err", err)
+		}
+		if text = strings.TrimSpace(text); text == "" {
+			return def
+		}
+		val, ok := new(big.Int).SetString(text, 0)
+		if !ok {
+			log.Error("Invalid input, expected big integer")
+			continue
+		}
+		return val
+	}
+}
+
 /*
 // readFloat reads a single line from stdin, trimming if from spaces, enforcing it
 // to parse into a float.
@@ -280,8 +302,10 @@ func (w *wizard) readJSON() string {
 }
 
 // readIPAddress reads a single line from stdin, trimming if from spaces and
-// converts it to a network IP address.
-func (w *wizard) readIPAddress() net.IP {
+// returning it if it's convertible to an IP address. The reason for keeping
+// the user input format instead of returning a Go net.IP is to match with
+// weird formats used by ethstats, which compares IPs textually, not by value.
+func (w *wizard) readIPAddress() string {
 	for {
 		// Read the IP address from the user
 		fmt.Printf("> ")
@@ -290,14 +314,13 @@ func (w *wizard) readIPAddress() net.IP {
 			log.Crit("Failed to read user input", "err", err)
 		}
 		if text = strings.TrimSpace(text); text == "" {
-			return nil
+			return ""
 		}
 		// Make sure it looks ok and return it if so
-		ip := net.ParseIP(text)
-		if ip == nil {
+		if ip := net.ParseIP(text); ip == nil {
 			log.Error("Invalid IP address, please retry")
 			continue
 		}
-		return ip
+		return text
 	}
 }

vendor/github.com/ethereum/go-ethereum/cmd/puppeth/wizard_ethstats.go

@@ -18,6 +18,7 @@ package main
 
 import (
 	"fmt"
+	"sort"
 
 	"github.com/ethereum/go-ethereum/log"
 )
@@ -64,17 +65,37 @@ func (w *wizard) deployEthstats() {
 	fmt.Println()
 	fmt.Printf("Keep existing IP %v blacklist (y/n)? (default = yes)\n", infos.banned)
 	if w.readDefaultString("y") != "y" {
-		infos.banned = nil
-
+		// The user might want to clear the entire list, although generally probably not
 		fmt.Println()
-		fmt.Println("Which IP addresses should be blacklisted?")
+		fmt.Printf("Clear out blacklist and start over (y/n)? (default = no)\n")
+		if w.readDefaultString("n") != "n" {
+			infos.banned = nil
+		}
+		// Offer the user to explicitly add/remove certain IP addresses
+		fmt.Println()
+		fmt.Println("Which additional IP addresses should be blacklisted?")
 		for {
-			if ip := w.readIPAddress(); ip != nil {
-				infos.banned = append(infos.banned, ip.String())
+			if ip := w.readIPAddress(); ip != "" {
+				infos.banned = append(infos.banned, ip)
 				continue
 			}
 			break
 		}
+		fmt.Println()
+		fmt.Println("Which IP addresses should not be blacklisted?")
+		for {
+			if ip := w.readIPAddress(); ip != "" {
+				for i, addr := range infos.banned {
+					if ip == addr {
+						infos.banned = append(infos.banned[:i], infos.banned[i+1:]...)
+						break
+					}
+				}
+				continue
+			}
+			break
+		}
+		sort.Strings(infos.banned)
 	}
 	// Try to deploy the ethstats server on the host
 	trusted := make([]string, 0, len(w.servers))

vendor/github.com/ethereum/go-ethereum/cmd/puppeth/wizard_genesis.go

@@ -18,7 +18,9 @@ package main
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
+	"io/ioutil"
 	"math/big"
 	"math/rand"
 	"time"
@@ -42,6 +44,7 @@ func (w *wizard) makeGenesis() {
 			EIP150Block:    big.NewInt(2),
 			EIP155Block:    big.NewInt(3),
 			EIP158Block:    big.NewInt(3),
+			ByzantiumBlock: big.NewInt(4),
 		},
 	}
 	// Figure out which consensus engine to choose
@@ -134,3 +137,53 @@ func (w *wizard) makeGenesis() {
 	// All done, store the genesis and flush to disk
 	w.conf.genesis = genesis
 }
+
+// manageGenesis permits the modification of chain configuration parameters in
+// a genesis config and the export of the entire genesis spec.
+func (w *wizard) manageGenesis() {
+	// Figure out whether to modify or export the genesis
+	fmt.Println()
+	fmt.Println(" 1. Modify existing fork rules")
+	fmt.Println(" 2. Export genesis configuration")
+
+	choice := w.read()
+	switch {
+	case choice == "1":
+		// Fork rule updating requested, iterate over each fork
+		fmt.Println()
+		fmt.Printf("Which block should Homestead come into effect? (default = %v)\n", w.conf.genesis.Config.HomesteadBlock)
+		w.conf.genesis.Config.HomesteadBlock = w.readDefaultBigInt(w.conf.genesis.Config.HomesteadBlock)
+
+		fmt.Println()
+		fmt.Printf("Which block should EIP150 come into effect? (default = %v)\n", w.conf.genesis.Config.EIP150Block)
+		w.conf.genesis.Config.EIP150Block = w.readDefaultBigInt(w.conf.genesis.Config.EIP150Block)
+
+		fmt.Println()
+		fmt.Printf("Which block should EIP155 come into effect? (default = %v)\n", w.conf.genesis.Config.EIP155Block)
+		w.conf.genesis.Config.EIP155Block = w.readDefaultBigInt(w.conf.genesis.Config.EIP155Block)
+
+		fmt.Println()
+		fmt.Printf("Which block should EIP158 come into effect? (default = %v)\n", w.conf.genesis.Config.EIP158Block)
+		w.conf.genesis.Config.EIP158Block = w.readDefaultBigInt(w.conf.genesis.Config.EIP158Block)
+
+		fmt.Println()
+		fmt.Printf("Which block should Byzantium come into effect? (default = %v)\n", w.conf.genesis.Config.ByzantiumBlock)
+		w.conf.genesis.Config.ByzantiumBlock = w.readDefaultBigInt(w.conf.genesis.Config.ByzantiumBlock)
+
+		out, _ := json.MarshalIndent(w.conf.genesis.Config, "", "  ")
+		fmt.Printf("Chain configuration updated:\n\n%s\n", out)
+
+	case choice == "2":
+		// Save whatever genesis configuration we currently have
+		fmt.Println()
+		fmt.Printf("Which file to save the genesis into? (default = %s.json)\n", w.network)
+		out, _ := json.MarshalIndent(w.conf.genesis, "", "  ")
+		if err := ioutil.WriteFile(w.readDefaultString(fmt.Sprintf("%s.json", w.network)), out, 0644); err != nil {
+			log.Error("Failed to save genesis file", "err", err)
+		}
+		log.Info("Exported existing genesis block")
+
+	default:
+		log.Error("That's not something I can do")
+	}
+}

vendor/github.com/ethereum/go-ethereum/cmd/puppeth/wizard_intro.go

@@ -98,7 +98,7 @@ func (w *wizard) run() {
 		if w.conf.genesis == nil {
 			fmt.Println(" 2. Configure new genesis")
 		} else {
-			fmt.Println(" 2. Save existing genesis")
+			fmt.Println(" 2. Manage existing genesis")
 		}
 		if len(w.servers) == 0 {
 			fmt.Println(" 3. Track new remote server")
@@ -118,18 +118,10 @@ func (w *wizard) run() {
 			w.networkStats(false)
 
 		case choice == "2":
-			// If we don't have a genesis, make one
 			if w.conf.genesis == nil {
 				w.makeGenesis()
 			} else {
-				// Otherwise just save whatever we currently have
-				fmt.Println()
-				fmt.Printf("Which file to save the genesis into? (default = %s.json)\n", w.network)
-				out, _ := json.MarshalIndent(w.conf.genesis, "", "  ")
-				if err := ioutil.WriteFile(w.readDefaultString(fmt.Sprintf("%s.json", w.network)), out, 0644); err != nil {
-					log.Error("Failed to save genesis file", "err", err)
-				}
-				log.Info("Exported existing genesis block")
+				w.manageGenesis()
 			}
 		case choice == "3":
 			if len(w.servers) == 0 {

vendor/github.com/ethereum/go-ethereum/cmd/puppeth/wizard_netstats.go

@@ -129,7 +129,7 @@ func (w *wizard) networkStats(tips bool) {
 		}
 	}
 	// If a genesis block was found, load it into our configs
-	if protips.genesis != "" {
+	if protips.genesis != "" && w.conf.genesis == nil {
 		genesis := new(core.Genesis)
 		if err := json.Unmarshal([]byte(protips.genesis), genesis); err != nil {
 			log.Error("Failed to parse remote genesis", "err", err)

vendor/github.com/ethereum/go-ethereum/cmd/utils/flags.go

@@ -31,6 +31,8 @@ import (
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/accounts/keystore"
 	"github.com/ethereum/go-ethereum/common"
+	"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/state"
@@ -305,7 +307,7 @@ var (
 	}
 	PasswordFileFlag = cli.StringFlag{
 		Name:  "password",
-		Usage: "Password file to use for non-inteactive password input",
+		Usage: "Password file to use for non-interactive password input",
 		Value: "",
 	}
 
@@ -1086,17 +1088,22 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai
 	var err error
 	chainDb = MakeChainDatabase(ctx, stack)
 
-	engine := ethash.NewFaker()
-	if !ctx.GlobalBool(FakePoWFlag.Name) {
-		engine = ethash.New(
-			stack.ResolvePath(eth.DefaultConfig.EthashCacheDir), eth.DefaultConfig.EthashCachesInMem, eth.DefaultConfig.EthashCachesOnDisk,
-			stack.ResolvePath(eth.DefaultConfig.EthashDatasetDir), eth.DefaultConfig.EthashDatasetsInMem, eth.DefaultConfig.EthashDatasetsOnDisk,
-		)
-	}
 	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(
+				stack.ResolvePath(eth.DefaultConfig.EthashCacheDir), eth.DefaultConfig.EthashCachesInMem, eth.DefaultConfig.EthashCachesOnDisk,
+				stack.ResolvePath(eth.DefaultConfig.EthashDatasetDir), eth.DefaultConfig.EthashDatasetsInMem, eth.DefaultConfig.EthashDatasetsOnDisk,
+			)
+		}
+	}
 	vmcfg := vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}
 	chain, err = core.NewBlockChain(chainDb, config, engine, vmcfg)
 	if err != nil {

vendor/github.com/ethereum/go-ethereum/consensus/clique/clique.go

@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/consensus/misc"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -313,6 +314,10 @@ func (c *Clique) verifyHeader(chain consensus.ChainReader, header *types.Header,
 			return errInvalidDifficulty
 		}
 	}
+	// If all checks passed, validate any special fields for hard forks
+	if err := misc.VerifyForkHashes(chain.Config(), header, false); err != nil {
+		return err
+	}
 	// All basic checks passed, verify cascading fields
 	return c.verifyCascadingFields(chain, header, parents)
 }

vendor/github.com/ethereum/go-ethereum/consensus/ethash/algorithm.go

@@ -102,7 +102,7 @@ func generateCache(dest []uint32, epoch uint64, seed []byte) {
 	header.Cap *= 4
 	cache := *(*[]byte)(unsafe.Pointer(&header))
 
-	// Calculate the number of thoretical rows (we'll store in one buffer nonetheless)
+	// Calculate the number of theoretical rows (we'll store in one buffer nonetheless)
 	size := uint64(len(cache))
 	rows := int(size) / hashBytes
 
@@ -187,7 +187,7 @@ func fnvHash(mix []uint32, data []uint32) {
 // generateDatasetItem combines data from 256 pseudorandomly selected cache nodes,
 // and hashes that to compute a single dataset node.
 func generateDatasetItem(cache []uint32, index uint32, keccak512 hasher) []byte {
-	// Calculate the number of thoretical rows (we use one buffer nonetheless)
+	// Calculate the number of theoretical rows (we use one buffer nonetheless)
 	rows := uint32(len(cache) / hashWords)
 
 	// Initialize the mix
@@ -287,7 +287,7 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) {
 // hashimoto aggregates data from the full dataset in order to produce our final
 // value for a particular header hash and nonce.
 func hashimoto(hash []byte, nonce uint64, size uint64, lookup func(index uint32) []uint32) ([]byte, []byte) {
-	// Calculate the number of thoretical rows (we use one buffer nonetheless)
+	// Calculate the number of theoretical rows (we use one buffer nonetheless)
 	rows := uint32(size / mixBytes)
 
 	// Combine header+nonce into a 64 byte seed

vendor/github.com/ethereum/go-ethereum/containers/docker/master-alpine/Dockerfile

@@ -2,7 +2,7 @@ FROM alpine:3.5
 
 RUN \
   apk add --update go git make gcc musl-dev linux-headers ca-certificates && \
-  git clone --depth 1 --branch release/1.6 https://github.com/ethereum/go-ethereum && \
+  git clone --depth 1 --branch release/1.7 https://github.com/ethereum/go-ethereum && \
   (cd go-ethereum && make geth) && \
   cp go-ethereum/build/bin/geth /geth && \
   apk del go git make gcc musl-dev linux-headers && \

vendor/github.com/ethereum/go-ethereum/containers/docker/master-ubuntu/Dockerfile

@@ -3,7 +3,7 @@ FROM ubuntu:xenial
 RUN \
   apt-get update && apt-get upgrade -q -y && \
   apt-get install -y --no-install-recommends golang git make gcc libc-dev ca-certificates && \
-  git clone --depth 1 --branch release/1.5 https://github.com/ethereum/go-ethereum && \
+  git clone --depth 1 --branch release/1.7 https://github.com/ethereum/go-ethereum && \
   (cd go-ethereum && make geth) && \
   cp go-ethereum/build/bin/geth /geth && \
   apt-get remove -y golang git make gcc libc-dev && apt autoremove -y && apt-get clean && \

vendor/github.com/ethereum/go-ethereum/contracts/chequebook/contract/chequebook.sol

@@ -27,10 +27,11 @@ contract chequebook is mortal {
         if(owner != ecrecover(hash, sig_v, sig_r, sig_s)) return;
         // Attempt sending the difference between the cumulative amount on the cheque
         // and the cumulative amount on the last cashed cheque to beneficiary.
-        if (amount - sent[beneficiary] >= this.balance) {
+        uint256 diff = amount - sent[beneficiary];
+        if (diff <= this.balance) {
 	    // update the cumulative amount before sending
             sent[beneficiary] = amount;
-            if (!beneficiary.send(amount - sent[beneficiary])) {
+            if (!beneficiary.send(diff)) {
                 // Upon failure to execute send, revert everything
                 throw;
             }

vendor/github.com/ethereum/go-ethereum/core/blockchain.go

@@ -796,11 +796,6 @@ func (bc *BlockChain) WriteBlockAndState(block *types.Block, receipts []*types.R
 	bc.mu.Lock()
 	defer bc.mu.Unlock()
 
-	if bc.HasBlock(block.Hash(), block.NumberU64()) {
-		log.Trace("Block existed", "hash", block.Hash())
-		return
-	}
-
 	localTd := bc.GetTd(bc.currentBlock.Hash(), bc.currentBlock.NumberU64())
 	externTd := new(big.Int).Add(block.Difficulty(), ptd)
 

vendor/github.com/ethereum/go-ethereum/core/bloombits/matcher.go

@@ -80,7 +80,8 @@ type Matcher struct {
 }
 
 // NewMatcher creates a new pipeline for retrieving bloom bit streams and doing
-// address and topic filtering on them.
+// address and topic filtering on them. Setting a filter component to `nil` is
+// allowed and will result in that filter rule being skipped (OR 0x11...1).
 func NewMatcher(sectionSize uint64, filters [][][]byte) *Matcher {
 	// Create the matcher instance
 	m := &Matcher{
@@ -95,11 +96,22 @@ func NewMatcher(sectionSize uint64, filters [][][]byte) *Matcher {
 	m.filters = nil
 
 	for _, filter := range filters {
+		// Gather the bit indexes of the filter rule, special casing the nil filter
+		if len(filter) == 0 {
+			continue
+		}
 		bloomBits := make([]bloomIndexes, len(filter))
 		for i, clause := range filter {
+			if clause == nil {
+				bloomBits = nil
+				break
+			}
 			bloomBits[i] = calcBloomIndexes(clause)
 		}
-		m.filters = append(m.filters, bloomBits)
+		// Accumulate the filter rules if no nil rule was within
+		if bloomBits != nil {
+			m.filters = append(m.filters, bloomBits)
+		}
 	}
 	// For every bit, create a scheduler to load/download the bit vectors
 	for _, bloomIndexLists := range m.filters {

vendor/github.com/ethereum/go-ethereum/core/state/journal.go

@@ -132,6 +132,7 @@ func (ch addLogChange) undo(s *StateDB) {
 	} else {
 		s.logs[ch.txhash] = logs[:len(logs)-1]
 	}
+	s.logSize--
 }
 
 func (ch addPreimageChange) undo(s *StateDB) {

vendor/github.com/ethereum/go-ethereum/core/types/gen_receipt_json.go

@@ -14,7 +14,7 @@ import (
 func (r Receipt) MarshalJSON() ([]byte, error) {
 	type Receipt struct {
 		PostState         hexutil.Bytes  `json:"root"`
-		Failed            bool           `json:"failed"`
+		Status            hexutil.Uint   `json:"status"`
 		CumulativeGasUsed *hexutil.Big   `json:"cumulativeGasUsed" gencodec:"required"`
 		Bloom             Bloom          `json:"logsBloom"         gencodec:"required"`
 		Logs              []*Log         `json:"logs"              gencodec:"required"`
@@ -24,7 +24,7 @@ func (r Receipt) MarshalJSON() ([]byte, error) {
 	}
 	var enc Receipt
 	enc.PostState = r.PostState
-	enc.Failed = r.Failed
+	enc.Status = hexutil.Uint(r.Status)
 	enc.CumulativeGasUsed = (*hexutil.Big)(r.CumulativeGasUsed)
 	enc.Bloom = r.Bloom
 	enc.Logs = r.Logs
@@ -37,7 +37,7 @@ func (r Receipt) MarshalJSON() ([]byte, error) {
 func (r *Receipt) UnmarshalJSON(input []byte) error {
 	type Receipt struct {
 		PostState         hexutil.Bytes   `json:"root"`
-		Failed            *bool           `json:"failed"`
+		Status            *hexutil.Uint   `json:"status"`
 		CumulativeGasUsed *hexutil.Big    `json:"cumulativeGasUsed" gencodec:"required"`
 		Bloom             *Bloom          `json:"logsBloom"         gencodec:"required"`
 		Logs              []*Log          `json:"logs"              gencodec:"required"`
@@ -52,8 +52,8 @@ func (r *Receipt) UnmarshalJSON(input []byte) error {
 	if dec.PostState != nil {
 		r.PostState = dec.PostState
 	}
-	if dec.Failed != nil {
-		r.Failed = *dec.Failed
+	if dec.Status != nil {
+		r.Status = uint(*dec.Status)
 	}
 	if dec.CumulativeGasUsed == nil {
 		return errors.New("missing required field 'cumulativeGasUsed' for Receipt")

vendor/github.com/ethereum/go-ethereum/core/types/receipt.go

@@ -30,15 +30,23 @@ import (
 //go:generate gencodec -type Receipt -field-override receiptMarshaling -out gen_receipt_json.go
 
 var (
-	receiptStatusFailed     = []byte{}
-	receiptStatusSuccessful = []byte{0x01}
+	receiptStatusFailedRLP     = []byte{}
+	receiptStatusSuccessfulRLP = []byte{0x01}
+)
+
+const (
+	// ReceiptStatusFailed is the status code of a transaction if execution failed.
+	ReceiptStatusFailed = uint(0)
+
+	// ReceiptStatusSuccessful is the status code of a transaction if execution succeeded.
+	ReceiptStatusSuccessful = uint(1)
 )
 
 // Receipt represents the results of a transaction.
 type Receipt struct {
 	// Consensus fields
 	PostState         []byte   `json:"root"`
-	Failed            bool     `json:"failed"`
+	Status            uint     `json:"status"`
 	CumulativeGasUsed *big.Int `json:"cumulativeGasUsed" gencodec:"required"`
 	Bloom             Bloom    `json:"logsBloom"         gencodec:"required"`
 	Logs              []*Log   `json:"logs"              gencodec:"required"`
@@ -51,6 +59,7 @@ type Receipt struct {
 
 type receiptMarshaling struct {
 	PostState         hexutil.Bytes
+	Status            hexutil.Uint
 	CumulativeGasUsed *hexutil.Big
 	GasUsed           *hexutil.Big
 }
@@ -75,7 +84,13 @@ type receiptStorageRLP struct {
 
 // NewReceipt creates a barebone transaction receipt, copying the init fields.
 func NewReceipt(root []byte, failed bool, cumulativeGasUsed *big.Int) *Receipt {
-	return &Receipt{PostState: common.CopyBytes(root), Failed: failed, CumulativeGasUsed: new(big.Int).Set(cumulativeGasUsed)}
+	r := &Receipt{PostState: common.CopyBytes(root), CumulativeGasUsed: new(big.Int).Set(cumulativeGasUsed)}
+	if failed {
+		r.Status = ReceiptStatusFailed
+	} else {
+		r.Status = ReceiptStatusSuccessful
+	}
+	return r
 }
 
 // EncodeRLP implements rlp.Encoder, and flattens the consensus fields of a receipt
@@ -100,10 +115,10 @@ func (r *Receipt) DecodeRLP(s *rlp.Stream) error {
 
 func (r *Receipt) setStatus(postStateOrStatus []byte) error {
 	switch {
-	case bytes.Equal(postStateOrStatus, receiptStatusSuccessful):
-		r.Failed = false
-	case bytes.Equal(postStateOrStatus, receiptStatusFailed):
-		r.Failed = true
+	case bytes.Equal(postStateOrStatus, receiptStatusSuccessfulRLP):
+		r.Status = ReceiptStatusSuccessful
+	case bytes.Equal(postStateOrStatus, receiptStatusFailedRLP):
+		r.Status = ReceiptStatusFailed
 	case len(postStateOrStatus) == len(common.Hash{}):
 		r.PostState = postStateOrStatus
 	default:
@@ -114,19 +129,18 @@ func (r *Receipt) setStatus(postStateOrStatus []byte) error {
 
 func (r *Receipt) statusEncoding() []byte {
 	if len(r.PostState) == 0 {
-		if r.Failed {
-			return receiptStatusFailed
-		} else {
-			return receiptStatusSuccessful
+		if r.Status == ReceiptStatusFailed {
+			return receiptStatusFailedRLP
 		}
+		return receiptStatusSuccessfulRLP
 	}
 	return r.PostState
 }
 
 // String implements the Stringer interface.
 func (r *Receipt) String() string {
-	if r.PostState == nil {
-		return fmt.Sprintf("receipt{failed=%t cgas=%v bloom=%x logs=%v}", r.Failed, r.CumulativeGasUsed, r.Bloom, r.Logs)
+	if len(r.PostState) == 0 {
+		return fmt.Sprintf("receipt{status=%d cgas=%v bloom=%x logs=%v}", r.Status, r.CumulativeGasUsed, r.Bloom, r.Logs)
 	}
 	return fmt.Sprintf("receipt{med=%x cgas=%v bloom=%x logs=%v}", r.PostState, r.CumulativeGasUsed, r.Bloom, r.Logs)
 }

vendor/github.com/ethereum/go-ethereum/core/types/transaction.go

@@ -209,12 +209,6 @@ func (tx *Transaction) Hash() common.Hash {
 	return v
 }
 
-// SigHash returns the hash to be signed by the sender.
-// It does not uniquely identify the transaction.
-func (tx *Transaction) SigHash(signer Signer) common.Hash {
-	return signer.Hash(tx)
-}
-
 func (tx *Transaction) Size() common.StorageSize {
 	if size := tx.size.Load(); size != nil {
 		return size.(common.StorageSize)
@@ -249,7 +243,13 @@ func (tx *Transaction) AsMessage(s Signer) (Message, error) {
 // WithSignature returns a new transaction with the given signature.
 // This signature needs to be formatted as described in the yellow paper (v+27).
 func (tx *Transaction) WithSignature(signer Signer, sig []byte) (*Transaction, error) {
-	return signer.WithSignature(tx, sig)
+	r, s, v, err := signer.SignatureValues(tx, sig)
+	if err != nil {
+		return nil, err
+	}
+	cpy := &Transaction{data: tx.data}
+	cpy.data.R, cpy.data.S, cpy.data.V = r, s, v
+	return cpy, nil
 }
 
 // Cost returns amount + gasprice * gaslimit.

vendor/github.com/ethereum/go-ethereum/core/types/transaction_signing.go

@@ -29,9 +29,6 @@ import (
 
 var (
 	ErrInvalidChainId = errors.New("invalid chain id for signer")
-
-	errAbstractSigner     = errors.New("abstract signer")
-	abstractSignerAddress = common.HexToAddress("ffffffffffffffffffffffffffffffffffffffff")
 )
 
 // sigCache is used to cache the derived sender and contains
@@ -62,12 +59,9 @@ func SignTx(tx *Transaction, s Signer, prv *ecdsa.PrivateKey) (*Transaction, err
 	if err != nil {
 		return nil, err
 	}
-	return s.WithSignature(tx, sig)
+	return tx.WithSignature(s, sig)
 }
 
-// Sender derives the sender from the tx using the signer derivation
-// functions.
-
 // Sender returns the address derived from the signature (V, R, S) using secp256k1
 // elliptic curve and an error if it failed deriving or upon an incorrect
 // signature.
@@ -86,33 +80,30 @@ func Sender(signer Signer, tx *Transaction) (common.Address, error) {
 		}
 	}
 
-	pubkey, err := signer.PublicKey(tx)
+	addr, err := signer.Sender(tx)
 	if err != nil {
 		return common.Address{}, err
 	}
-	var addr common.Address
-	copy(addr[:], crypto.Keccak256(pubkey[1:])[12:])
 	tx.from.Store(sigCache{signer: signer, from: addr})
 	return addr, nil
 }
 
+// Signer encapsulates transaction signature handling. Note that this interface is not a
+// stable API and may change at any time to accommodate new protocol rules.
 type Signer interface {
-	// Hash returns the rlp encoded hash for signatures
+	// Sender returns the sender address of the transaction.
+	Sender(tx *Transaction) (common.Address, error)
+	// SignatureValues returns the raw R, S, V values corresponding to the
+	// given signature.
+	SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error)
+	// Hash returns the hash to be signed.
 	Hash(tx *Transaction) common.Hash
-	// PubilcKey returns the public key derived from the signature
-	PublicKey(tx *Transaction) ([]byte, error)
-	// WithSignature returns a copy of the transaction with the given signature.
-	// The signature must be encoded in [R || S || V] format where V is 0 or 1.
-	WithSignature(tx *Transaction, sig []byte) (*Transaction, error)
-	// Checks for equality on the signers
+	// Equal returns true if the given signer is the same as the receiver.
 	Equal(Signer) bool
 }
 
-// EIP155Transaction implements TransactionInterface using the
-// EIP155 rules
+// EIP155Transaction implements Signer using the EIP155 rules.
 type EIP155Signer struct {
-	HomesteadSigner
-
 	chainId, chainIdMul *big.Int
 }
 
@@ -131,55 +122,32 @@ func (s EIP155Signer) Equal(s2 Signer) bool {
 	return ok && eip155.chainId.Cmp(s.chainId) == 0
 }
 
-func (s EIP155Signer) PublicKey(tx *Transaction) ([]byte, error) {
-	// if the transaction is not protected fall back to homestead signer
+var big8 = big.NewInt(8)
+
+func (s EIP155Signer) Sender(tx *Transaction) (common.Address, error) {
 	if !tx.Protected() {
-		return (HomesteadSigner{}).PublicKey(tx)
+		return HomesteadSigner{}.Sender(tx)
 	}
-
 	if tx.ChainId().Cmp(s.chainId) != 0 {
-		return nil, ErrInvalidChainId
+		return common.Address{}, ErrInvalidChainId
 	}
-
-	V := byte(new(big.Int).Sub(tx.data.V, s.chainIdMul).Uint64() - 35)
-	if !crypto.ValidateSignatureValues(V, tx.data.R, tx.data.S, true) {
-		return nil, ErrInvalidSig
-	}
-	// encode the signature in uncompressed format
-	R, S := tx.data.R.Bytes(), tx.data.S.Bytes()
-	sig := make([]byte, 65)
-	copy(sig[32-len(R):32], R)
-	copy(sig[64-len(S):64], S)
-	sig[64] = V
-
-	// recover the public key from the signature
-	hash := s.Hash(tx)
-	pub, err := crypto.Ecrecover(hash[:], sig)
-	if err != nil {
-		return nil, err
-	}
-	if len(pub) == 0 || pub[0] != 4 {
-		return nil, errors.New("invalid public key")
-	}
-	return pub, nil
+	V := new(big.Int).Sub(tx.data.V, s.chainIdMul)
+	V.Sub(V, big8)
+	return recoverPlain(s.Hash(tx), tx.data.R, tx.data.S, V, true)
 }
 
 // WithSignature returns a new transaction with the given signature. This signature
 // needs to be in the [R || S || V] format where V is 0 or 1.
-func (s EIP155Signer) WithSignature(tx *Transaction, sig []byte) (*Transaction, error) {
-	if len(sig) != 65 {
-		panic(fmt.Sprintf("wrong size for signature: got %d, want 65", len(sig)))
+func (s EIP155Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big.Int, err error) {
+	R, S, V, err = HomesteadSigner{}.SignatureValues(tx, sig)
+	if err != nil {
+		return nil, nil, nil, err
 	}
-
-	cpy := &Transaction{data: tx.data}
-	cpy.data.R = new(big.Int).SetBytes(sig[:32])
-	cpy.data.S = new(big.Int).SetBytes(sig[32:64])
-	cpy.data.V = new(big.Int).SetBytes([]byte{sig[64]})
 	if s.chainId.Sign() != 0 {
-		cpy.data.V = big.NewInt(int64(sig[64] + 35))
-		cpy.data.V.Add(cpy.data.V, s.chainIdMul)
+		V = big.NewInt(int64(sig[64] + 35))
+		V.Add(V, s.chainIdMul)
 	}
-	return cpy, nil
+	return R, S, V, nil
 }
 
 // Hash returns the hash to be signed by the sender.
@@ -205,44 +173,14 @@ func (s HomesteadSigner) Equal(s2 Signer) bool {
 	return ok
 }
 
-// WithSignature returns a new transaction with the given signature. This signature
+// SignatureValues returns signature values. This signature
 // needs to be in the [R || S || V] format where V is 0 or 1.
-func (hs HomesteadSigner) WithSignature(tx *Transaction, sig []byte) (*Transaction, error) {
-	if len(sig) != 65 {
-		panic(fmt.Sprintf("wrong size for snature: got %d, want 65", len(sig)))
-	}
-	cpy := &Transaction{data: tx.data}
-	cpy.data.R = new(big.Int).SetBytes(sig[:32])
-	cpy.data.S = new(big.Int).SetBytes(sig[32:64])
-	cpy.data.V = new(big.Int).SetBytes([]byte{sig[64] + 27})
-	return cpy, nil
+func (hs HomesteadSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) {
+	return hs.FrontierSigner.SignatureValues(tx, sig)
 }
 
-func (hs HomesteadSigner) PublicKey(tx *Transaction) ([]byte, error) {
-	if tx.data.V.BitLen() > 8 {
-		return nil, ErrInvalidSig
-	}
-	V := byte(tx.data.V.Uint64() - 27)
-	if !crypto.ValidateSignatureValues(V, tx.data.R, tx.data.S, true) {
-		return nil, ErrInvalidSig
-	}
-	// encode the snature in uncompressed format
-	r, s := tx.data.R.Bytes(), tx.data.S.Bytes()
-	sig := make([]byte, 65)
-	copy(sig[32-len(r):32], r)
-	copy(sig[64-len(s):64], s)
-	sig[64] = V
-
-	// recover the public key from the snature
-	hash := hs.Hash(tx)
-	pub, err := crypto.Ecrecover(hash[:], sig)
-	if err != nil {
-		return nil, err
-	}
-	if len(pub) == 0 || pub[0] != 4 {
-		return nil, errors.New("invalid public key")
-	}
-	return pub, nil
+func (hs HomesteadSigner) Sender(tx *Transaction) (common.Address, error) {
+	return recoverPlain(hs.Hash(tx), tx.data.R, tx.data.S, tx.data.V, true)
 }
 
 type FrontierSigner struct{}
@@ -252,20 +190,19 @@ func (s FrontierSigner) Equal(s2 Signer) bool {
 	return ok
 }
 
-// WithSignature returns a new transaction with the given signature. This signature
+// SignatureValues returns signature values. This signature
 // needs to be in the [R || S || V] format where V is 0 or 1.
-func (fs FrontierSigner) WithSignature(tx *Transaction, sig []byte) (*Transaction, error) {
+func (fs FrontierSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) {
 	if len(sig) != 65 {
-		panic(fmt.Sprintf("wrong size for snature: got %d, want 65", len(sig)))
+		panic(fmt.Sprintf("wrong size for signature: got %d, want 65", len(sig)))
 	}
-	cpy := &Transaction{data: tx.data}
-	cpy.data.R = new(big.Int).SetBytes(sig[:32])
-	cpy.data.S = new(big.Int).SetBytes(sig[32:64])
-	cpy.data.V = new(big.Int).SetBytes([]byte{sig[64] + 27})
-	return cpy, nil
+	r = new(big.Int).SetBytes(sig[:32])
+	s = new(big.Int).SetBytes(sig[32:64])
+	v = new(big.Int).SetBytes([]byte{sig[64] + 27})
+	return r, s, v, nil
 }
 
-// Hash returns the hash to be sned by the sender.
+// Hash returns the hash to be signed by the sender.
 // It does not uniquely identify the transaction.
 func (fs FrontierSigner) Hash(tx *Transaction) common.Hash {
 	return rlpHash([]interface{}{
@@ -278,32 +215,35 @@ func (fs FrontierSigner) Hash(tx *Transaction) common.Hash {
 	})
 }
 
-func (fs FrontierSigner) PublicKey(tx *Transaction) ([]byte, error) {
-	if tx.data.V.BitLen() > 8 {
-		return nil, ErrInvalidSig
-	}
+func (fs FrontierSigner) Sender(tx *Transaction) (common.Address, error) {
+	return recoverPlain(fs.Hash(tx), tx.data.R, tx.data.S, tx.data.V, false)
+}
 
-	V := byte(tx.data.V.Uint64() - 27)
-	if !crypto.ValidateSignatureValues(V, tx.data.R, tx.data.S, false) {
-		return nil, ErrInvalidSig
+func recoverPlain(sighash common.Hash, R, S, Vb *big.Int, homestead bool) (common.Address, error) {
+	if Vb.BitLen() > 8 {
+		return common.Address{}, ErrInvalidSig
+	}
+	V := byte(Vb.Uint64() - 27)
+	if !crypto.ValidateSignatureValues(V, R, S, homestead) {
+		return common.Address{}, ErrInvalidSig
 	}
 	// encode the snature in uncompressed format
-	r, s := tx.data.R.Bytes(), tx.data.S.Bytes()
+	r, s := R.Bytes(), S.Bytes()
 	sig := make([]byte, 65)
 	copy(sig[32-len(r):32], r)
 	copy(sig[64-len(s):64], s)
 	sig[64] = V
-
 	// recover the public key from the snature
-	hash := fs.Hash(tx)
-	pub, err := crypto.Ecrecover(hash[:], sig)
+	pub, err := crypto.Ecrecover(sighash[:], sig)
 	if err != nil {
-		return nil, err
+		return common.Address{}, err
 	}
 	if len(pub) == 0 || pub[0] != 4 {
-		return nil, errors.New("invalid public key")
+		return common.Address{}, errors.New("invalid public key")
 	}
-	return pub, nil
+	var addr common.Address
+	copy(addr[:], crypto.Keccak256(pub[1:])[12:])
+	return addr, nil
 }
 
 // deriveChainId derives the chain id from the given v parameter

vendor/github.com/ethereum/go-ethereum/core/vm/interpreter.go

@@ -137,12 +137,17 @@ func (in *Interpreter) Run(snapshot int, contract *Contract, input []byte) (ret
 		// to be uint256. Practically much less so feasible.
 		pc   = uint64(0) // program counter
 		cost uint64
+		// copies used by tracer
+		stackCopy = newstack() // stackCopy needed for Tracer since stack is mutated by 63/64 gas rule
+		pcCopy    uint64       // needed for the deferred Tracer
+		gasCopy   uint64       // for Tracer to log gas remaining before execution
+		logged    bool         // deferred Tracer should ignore already logged steps
 	)
 	contract.Input = input
 
 	defer func() {
-		if err != nil && in.cfg.Debug {
-			in.cfg.Tracer.CaptureState(in.evm, pc, op, contract.Gas, cost, mem, stack, contract, in.evm.depth, err)
+		if err != nil && !logged && in.cfg.Debug {
+			in.cfg.Tracer.CaptureState(in.evm, pcCopy, op, gasCopy, cost, mem, stackCopy, contract, in.evm.depth, err)
 		}
 	}()
 
@@ -154,22 +159,29 @@ func (in *Interpreter) Run(snapshot int, contract *Contract, input []byte) (ret
 		// Get the memory location of pc
 		op = contract.GetOp(pc)
 
-		// get the operation from the jump table matching the opcode
-		operation := in.cfg.JumpTable[op]
-		if err := in.enforceRestrictions(op, operation, stack); err != nil {
-			return nil, err
+		if in.cfg.Debug {
+			logged = false
+			pcCopy = uint64(pc)
+			gasCopy = uint64(contract.Gas)
+			stackCopy = newstack()
+			for _, val := range stack.data {
+				stackCopy.push(val)
+			}
 		}
 
-		// if the op is invalid abort the process and return an error
+		// Get the operation from the jump table matching the opcode and validate the
+		// stack and make sure there enough stack items available to perform the operation
+		operation := in.cfg.JumpTable[op]
 		if !operation.valid {
 			return nil, fmt.Errorf("invalid opcode 0x%x", int(op))
 		}
-
-		// validate the stack and make sure there enough stack items available
-		// to perform the operation
 		if err := operation.validateStack(stack); err != nil {
 			return nil, err
 		}
+		// If the operation is valid, enforce and write restrictions
+		if err := in.enforceRestrictions(op, operation, stack); err != nil {
+			return nil, err
+		}
 
 		var memorySize uint64
 		// calculate the new memory size and expand the memory to fit
@@ -199,7 +211,8 @@ func (in *Interpreter) Run(snapshot int, contract *Contract, input []byte) (ret
 		}
 
 		if in.cfg.Debug {
-			in.cfg.Tracer.CaptureState(in.evm, pc, op, contract.Gas, cost, mem, stack, contract, in.evm.depth, err)
+			in.cfg.Tracer.CaptureState(in.evm, pc, op, gasCopy, cost, mem, stackCopy, contract, in.evm.depth, err)
+			logged = true
 		}
 
 		// execute the operation

vendor/github.com/ethereum/go-ethereum/eth/api.go

@@ -51,7 +51,7 @@ type PublicEthereumAPI struct {
 	e *Ethereum
 }
 
-// NewPublicEthereumAPI creates a new Etheruem protocol API for full nodes.
+// NewPublicEthereumAPI creates a new Ethereum protocol API for full nodes.
 func NewPublicEthereumAPI(e *Ethereum) *PublicEthereumAPI {
 	return &PublicEthereumAPI{e}
 }
@@ -205,7 +205,7 @@ func (api *PrivateMinerAPI) GetHashrate() uint64 {
 	return uint64(api.e.miner.HashRate())
 }
 
-// PrivateAdminAPI is the collection of Etheruem full node-related APIs
+// PrivateAdminAPI is the collection of Ethereum full node-related APIs
 // exposed over the private admin endpoint.
 type PrivateAdminAPI struct {
 	eth *Ethereum
@@ -298,7 +298,7 @@ func (api *PrivateAdminAPI) ImportChain(file string) (bool, error) {
 	return true, nil
 }
 
-// PublicDebugAPI is the collection of Etheruem full node APIs exposed
+// PublicDebugAPI is the collection of Ethereum full node APIs exposed
 // over the public debugging endpoint.
 type PublicDebugAPI struct {
 	eth *Ethereum
@@ -335,7 +335,7 @@ func (api *PublicDebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error
 	return stateDb.RawDump(), nil
 }
 
-// PrivateDebugAPI is the collection of Etheruem full node APIs exposed over
+// PrivateDebugAPI is the collection of Ethereum full node APIs exposed over
 // the private debugging endpoint.
 type PrivateDebugAPI struct {
 	config *params.ChainConfig
@@ -523,8 +523,7 @@ func (api *PrivateDebugAPI) TraceTransaction(ctx context.Context, txHash common.
 
 	// Run the transaction with tracing enabled.
 	vmenv := vm.NewEVM(context, statedb, api.config, vm.Config{Debug: true, Tracer: tracer})
-	// TODO utilize failed flag
-	ret, gas, _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas()))
+	ret, gas, failed, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas()))
 	if err != nil {
 		return nil, fmt.Errorf("tracing failed: %v", err)
 	}
@@ -532,6 +531,7 @@ func (api *PrivateDebugAPI) TraceTransaction(ctx context.Context, txHash common.
 	case *vm.StructLogger:
 		return &ethapi.ExecutionResult{
 			Gas:         gas,
+			Failed:      failed,
 			ReturnValue: fmt.Sprintf("%x", ret),
 			StructLogs:  ethapi.FormatLogs(tracer.StructLogs()),
 		}, nil

vendor/github.com/ethereum/go-ethereum/eth/backend.go

@@ -327,7 +327,7 @@ func (s *Ethereum) StartMining(local bool) error {
 		wallet, err := s.accountManager.Find(accounts.Account{Address: eb})
 		if wallet == nil || err != nil {
 			log.Error("Etherbase account unavailable locally", "err", err)
-			return fmt.Errorf("singer missing: %v", err)
+			return fmt.Errorf("signer missing: %v", err)
 		}
 		clique.Authorize(eb, wallet.SignHash)
 	}

vendor/github.com/ethereum/go-ethereum/eth/bind.go

@@ -43,7 +43,7 @@ type ContractBackend struct {
 }
 
 // NewContractBackend creates a new native contract backend using an existing
-// Etheruem object.
+// Ethereum object.
 func NewContractBackend(apiBackend ethapi.Backend) *ContractBackend {
 	return &ContractBackend{
 		eapi:  ethapi.NewPublicEthereumAPI(apiBackend),

vendor/github.com/ethereum/go-ethereum/eth/downloader/fakepeer.go

@@ -0,0 +1,160 @@
+// Copyright 2017 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 downloader
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+)
+
+// FakePeer is a mock downloader peer that operates on a local database instance
+// instead of being an actual live node. It's useful for testing and to implement
+// sync commands from an xisting local database.
+type FakePeer struct {
+	id string
+	db ethdb.Database
+	hc *core.HeaderChain
+	dl *Downloader
+}
+
+// NewFakePeer creates a new mock downloader peer with the given data sources.
+func NewFakePeer(id string, db ethdb.Database, hc *core.HeaderChain, dl *Downloader) *FakePeer {
+	return &FakePeer{id: id, db: db, hc: hc, dl: dl}
+}
+
+// Head implements downloader.Peer, returning the current head hash and number
+// of the best known header.
+func (p *FakePeer) Head() (common.Hash, *big.Int) {
+	header := p.hc.CurrentHeader()
+	return header.Hash(), header.Number
+}
+
+// RequestHeadersByHash implements downloader.Peer, returning a batch of headers
+// defined by the origin hash and the associaed query parameters.
+func (p *FakePeer) RequestHeadersByHash(hash common.Hash, amount int, skip int, reverse bool) error {
+	var (
+		headers []*types.Header
+		unknown bool
+	)
+	for !unknown && len(headers) < amount {
+		origin := p.hc.GetHeaderByHash(hash)
+		if origin == nil {
+			break
+		}
+		number := origin.Number.Uint64()
+		headers = append(headers, origin)
+		if reverse {
+			for i := 0; i < int(skip)+1; i++ {
+				if header := p.hc.GetHeader(hash, number); header != nil {
+					hash = header.ParentHash
+					number--
+				} else {
+					unknown = true
+					break
+				}
+			}
+		} else {
+			var (
+				current = origin.Number.Uint64()
+				next    = current + uint64(skip) + 1
+			)
+			if header := p.hc.GetHeaderByNumber(next); header != nil {
+				if p.hc.GetBlockHashesFromHash(header.Hash(), uint64(skip+1))[skip] == hash {
+					hash = header.Hash()
+				} else {
+					unknown = true
+				}
+			} else {
+				unknown = true
+			}
+		}
+	}
+	p.dl.DeliverHeaders(p.id, headers)
+	return nil
+}
+
+// RequestHeadersByNumber implements downloader.Peer, returning a batch of headers
+// defined by the origin number and the associaed query parameters.
+func (p *FakePeer) RequestHeadersByNumber(number uint64, amount int, skip int, reverse bool) error {
+	var (
+		headers []*types.Header
+		unknown bool
+	)
+	for !unknown && len(headers) < amount {
+		origin := p.hc.GetHeaderByNumber(number)
+		if origin == nil {
+			break
+		}
+		if reverse {
+			if number >= uint64(skip+1) {
+				number -= uint64(skip + 1)
+			} else {
+				unknown = true
+			}
+		} else {
+			number += uint64(skip + 1)
+		}
+		headers = append(headers, origin)
+	}
+	p.dl.DeliverHeaders(p.id, headers)
+	return nil
+}
+
+// RequestBodies implements downloader.Peer, returning a batch of block bodies
+// corresponding to the specified block hashes.
+func (p *FakePeer) RequestBodies(hashes []common.Hash) error {
+	var (
+		txs    [][]*types.Transaction
+		uncles [][]*types.Header
+	)
+	for _, hash := range hashes {
+		block := core.GetBlock(p.db, hash, p.hc.GetBlockNumber(hash))
+
+		txs = append(txs, block.Transactions())
+		uncles = append(uncles, block.Uncles())
+	}
+	p.dl.DeliverBodies(p.id, txs, uncles)
+	return nil
+}
+
+// RequestReceipts implements downloader.Peer, returning a batch of transaction
+// receipts corresponding to the specified block hashes.
+func (p *FakePeer) RequestReceipts(hashes []common.Hash) error {
+	var receipts [][]*types.Receipt
+	for _, hash := range hashes {
+		receipts = append(receipts, core.GetBlockReceipts(p.db, hash, p.hc.GetBlockNumber(hash)))
+	}
+	p.dl.DeliverReceipts(p.id, receipts)
+	return nil
+}
+
+// RequestNodeData implements downloader.Peer, returning a batch of state trie
+// nodes corresponding to the specified trie hashes.
+func (p *FakePeer) RequestNodeData(hashes []common.Hash) error {
+	var data [][]byte
+	for _, hash := range hashes {
+		if entry, err := p.db.Get(hash.Bytes()); err == nil {
+			data = append(data, entry)
+		}
+	}
+	p.dl.DeliverNodeData(p.id, data)
+	return nil
+}

vendor/github.com/ethereum/go-ethereum/eth/fetcher/fetcher.go

@@ -83,6 +83,7 @@ type announce struct {
 
 // headerFilterTask represents a batch of headers needing fetcher filtering.
 type headerFilterTask struct {
+	peer    string          // The source peer of block headers
 	headers []*types.Header // Collection of headers to filter
 	time    time.Time       // Arrival time of the headers
 }
@@ -90,6 +91,7 @@ type headerFilterTask struct {
 // headerFilterTask represents a batch of block bodies (transactions and uncles)
 // needing fetcher filtering.
 type bodyFilterTask struct {
+	peer         string                 // The source peer of block bodies
 	transactions [][]*types.Transaction // Collection of transactions per block bodies
 	uncles       [][]*types.Header      // Collection of uncles per block bodies
 	time         time.Time              // Arrival time of the blocks' contents
@@ -218,8 +220,8 @@ func (f *Fetcher) Enqueue(peer string, block *types.Block) error {
 
 // FilterHeaders extracts all the headers that were explicitly requested by the fetcher,
 // returning those that should be handled differently.
-func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*types.Header {
-	log.Trace("Filtering headers", "headers", len(headers))
+func (f *Fetcher) FilterHeaders(peer string, headers []*types.Header, time time.Time) []*types.Header {
+	log.Trace("Filtering headers", "peer", peer, "headers", len(headers))
 
 	// Send the filter channel to the fetcher
 	filter := make(chan *headerFilterTask)
@@ -231,7 +233,7 @@ func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*type
 	}
 	// Request the filtering of the header list
 	select {
-	case filter <- &headerFilterTask{headers: headers, time: time}:
+	case filter <- &headerFilterTask{peer: peer, headers: headers, time: time}:
 	case <-f.quit:
 		return nil
 	}
@@ -246,8 +248,8 @@ func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*type
 
 // FilterBodies extracts all the block bodies that were explicitly requested by
 // the fetcher, returning those that should be handled differently.
-func (f *Fetcher) FilterBodies(transactions [][]*types.Transaction, uncles [][]*types.Header, time time.Time) ([][]*types.Transaction, [][]*types.Header) {
-	log.Trace("Filtering bodies", "txs", len(transactions), "uncles", len(uncles))
+func (f *Fetcher) FilterBodies(peer string, transactions [][]*types.Transaction, uncles [][]*types.Header, time time.Time) ([][]*types.Transaction, [][]*types.Header) {
+	log.Trace("Filtering bodies", "peer", peer, "txs", len(transactions), "uncles", len(uncles))
 
 	// Send the filter channel to the fetcher
 	filter := make(chan *bodyFilterTask)
@@ -259,7 +261,7 @@ func (f *Fetcher) FilterBodies(transactions [][]*types.Transaction, uncles [][]*
 	}
 	// Request the filtering of the body list
 	select {
-	case filter <- &bodyFilterTask{transactions: transactions, uncles: uncles, time: time}:
+	case filter <- &bodyFilterTask{peer: peer, transactions: transactions, uncles: uncles, time: time}:
 	case <-f.quit:
 		return nil, nil
 	}
@@ -444,7 +446,7 @@ func (f *Fetcher) loop() {
 				hash := header.Hash()
 
 				// Filter fetcher-requested headers from other synchronisation algorithms
-				if announce := f.fetching[hash]; announce != nil && f.fetched[hash] == nil && f.completing[hash] == nil && f.queued[hash] == nil {
+				if announce := f.fetching[hash]; announce != nil && announce.origin == task.peer && f.fetched[hash] == nil && f.completing[hash] == nil && f.queued[hash] == nil {
 					// If the delivered header does not match the promised number, drop the announcer
 					if header.Number.Uint64() != announce.number {
 						log.Trace("Invalid block number fetched", "peer", announce.origin, "hash", header.Hash(), "announced", announce.number, "provided", header.Number)
@@ -523,7 +525,7 @@ func (f *Fetcher) loop() {
 						txnHash := types.DeriveSha(types.Transactions(task.transactions[i]))
 						uncleHash := types.CalcUncleHash(task.uncles[i])
 
-						if txnHash == announce.header.TxHash && uncleHash == announce.header.UncleHash {
+						if txnHash == announce.header.TxHash && uncleHash == announce.header.UncleHash && announce.origin == task.peer {
 							// Mark the body matched, reassemble if still unknown
 							matched = true
 

vendor/github.com/ethereum/go-ethereum/eth/filters/api.go

@@ -498,7 +498,6 @@ func (args *FilterCriteria) UnmarshalJSON(data []byte) error {
 			switch topic := t.(type) {
 			case nil:
 				// ignore topic when matching logs
-				args.Topics[i] = []common.Hash{{}}
 
 			case string:
 				// match specific topic
@@ -507,12 +506,16 @@ func (args *FilterCriteria) UnmarshalJSON(data []byte) error {
 					return err
 				}
 				args.Topics[i] = []common.Hash{top}
+
 			case []interface{}:
 				// or case e.g. [null, "topic0", "topic1"]
 				for _, rawTopic := range topic {
 					if rawTopic == nil {
-						args.Topics[i] = append(args.Topics[i], common.Hash{})
-					} else if topic, ok := rawTopic.(string); ok {
+						// null component, match all
+						args.Topics[i] = nil
+						break
+					}
+					if topic, ok := rawTopic.(string); ok {
 						parsed, err := decodeTopic(topic)
 						if err != nil {
 							return err

vendor/github.com/ethereum/go-ethereum/eth/filters/filter.go

@@ -60,7 +60,9 @@ type Filter struct {
 // New creates a new filter which uses a bloom filter on blocks to figure out whether
 // a particular block is interesting or not.
 func New(backend Backend, begin, end int64, addresses []common.Address, topics [][]common.Hash) *Filter {
-	// Flatten the address and topic filter clauses into a single filter system
+	// Flatten the address and topic filter clauses into a single bloombits filter
+	// system. Since the bloombits are not positional, nil topics are permitted,
+	// which get flattened into a nil byte slice.
 	var filters [][][]byte
 	if len(addresses) > 0 {
 		filter := make([][]byte, len(addresses))
@@ -235,32 +237,24 @@ Logs:
 		if len(addresses) > 0 && !includes(addresses, log.Address) {
 			continue
 		}
-
-		logTopics := make([]common.Hash, len(topics))
-		copy(logTopics, log.Topics)
-
 		// If the to filtered topics is greater than the amount of topics in logs, skip.
 		if len(topics) > len(log.Topics) {
 			continue Logs
 		}
-
 		for i, topics := range topics {
-			var match bool
+			match := len(topics) == 0 // empty rule set == wildcard
 			for _, topic := range topics {
-				// common.Hash{} is a match all (wildcard)
-				if (topic == common.Hash{}) || log.Topics[i] == topic {
+				if log.Topics[i] == topic {
 					match = true
 					break
 				}
 			}
-
 			if !match {
 				continue Logs
 			}
 		}
 		ret = append(ret, log)
 	}
-
 	return ret
 }
 
@@ -273,16 +267,15 @@ func bloomFilter(bloom types.Bloom, addresses []common.Address, topics [][]commo
 				break
 			}
 		}
-
 		if !included {
 			return false
 		}
 	}
 
 	for _, sub := range topics {
-		var included bool
+		included := len(sub) == 0 // empty rule set == wildcard
 		for _, topic := range sub {
-			if (topic == common.Hash{}) || types.BloomLookup(bloom, topic) {
+			if types.BloomLookup(bloom, topic) {
 				included = true
 				break
 			}
@@ -291,6 +284,5 @@ func bloomFilter(bloom types.Bloom, addresses []common.Address, topics [][]commo
 			return false
 		}
 	}
-
 	return true
 }

vendor/github.com/ethereum/go-ethereum/eth/filters/filter_system.go

@@ -212,7 +212,6 @@ func (es *EventSystem) subscribeMinedPendingLogs(crit FilterCriteria, logs chan
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
-
 	return es.subscribe(sub)
 }
 
@@ -230,7 +229,6 @@ func (es *EventSystem) subscribeLogs(crit FilterCriteria, logs chan []*types.Log
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
-
 	return es.subscribe(sub)
 }
 
@@ -248,7 +246,6 @@ func (es *EventSystem) subscribePendingLogs(crit FilterCriteria, logs chan []*ty
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
-
 	return es.subscribe(sub)
 }
 
@@ -265,7 +262,6 @@ func (es *EventSystem) SubscribeNewHeads(headers chan *types.Header) *Subscripti
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
-
 	return es.subscribe(sub)
 }
 
@@ -282,7 +278,6 @@ func (es *EventSystem) SubscribePendingTxEvents(hashes chan common.Hash) *Subscr
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
-
 	return es.subscribe(sub)
 }
 

vendor/github.com/ethereum/go-ethereum/eth/handler.go

@@ -450,7 +450,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 				return nil
 			}
 			// Irrelevant of the fork checks, send the header to the fetcher just in case
-			headers = pm.fetcher.FilterHeaders(headers, time.Now())
+			headers = pm.fetcher.FilterHeaders(p.id, headers, time.Now())
 		}
 		if len(headers) > 0 || !filter {
 			err := pm.downloader.DeliverHeaders(p.id, headers)
@@ -503,7 +503,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 		// Filter out any explicitly requested bodies, deliver the rest to the downloader
 		filter := len(trasactions) > 0 || len(uncles) > 0
 		if filter {
-			trasactions, uncles = pm.fetcher.FilterBodies(trasactions, uncles, time.Now())
+			trasactions, uncles = pm.fetcher.FilterBodies(p.id, trasactions, uncles, time.Now())
 		}
 		if len(trasactions) > 0 || len(uncles) > 0 || !filter {
 			err := pm.downloader.DeliverBodies(p.id, trasactions, uncles)

vendor/github.com/ethereum/go-ethereum/ethclient/ethclient.go

@@ -20,6 +20,7 @@ package ethclient
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"math/big"
 
@@ -70,9 +71,9 @@ func (ec *Client) BlockByNumber(ctx context.Context, number *big.Int) (*types.Bl
 }
 
 type rpcBlock struct {
-	Hash         common.Hash          `json:"hash"`
-	Transactions []*types.Transaction `json:"transactions"`
-	UncleHashes  []common.Hash        `json:"uncles"`
+	Hash         common.Hash      `json:"hash"`
+	Transactions []rpcTransaction `json:"transactions"`
+	UncleHashes  []common.Hash    `json:"uncles"`
 }
 
 func (ec *Client) getBlock(ctx context.Context, method string, args ...interface{}) (*types.Block, error) {
@@ -129,7 +130,13 @@ func (ec *Client) getBlock(ctx context.Context, method string, args ...interface
 			}
 		}
 	}
-	return types.NewBlockWithHeader(head).WithBody(body.Transactions, uncles), nil
+	// Fill the sender cache of transactions in the block.
+	txs := make([]*types.Transaction, len(body.Transactions))
+	for i, tx := range body.Transactions {
+		setSenderFromServer(tx.tx, tx.From, body.Hash)
+		txs[i] = tx.tx
+	}
+	return types.NewBlockWithHeader(head).WithBody(txs, uncles), nil
 }
 
 // HeaderByHash returns the block header with the given hash.
@@ -153,25 +160,62 @@ func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.H
 	return head, err
 }
 
+type rpcTransaction struct {
+	tx *types.Transaction
+	txExtraInfo
+}
+
+type txExtraInfo struct {
+	BlockNumber *string
+	BlockHash   common.Hash
+	From        common.Address
+}
+
+func (tx *rpcTransaction) UnmarshalJSON(msg []byte) error {
+	if err := json.Unmarshal(msg, &tx.tx); err != nil {
+		return err
+	}
+	return json.Unmarshal(msg, &tx.txExtraInfo)
+}
+
 // TransactionByHash returns the transaction with the given hash.
 func (ec *Client) TransactionByHash(ctx context.Context, hash common.Hash) (tx *types.Transaction, isPending bool, err error) {
-	var raw json.RawMessage
-	err = ec.c.CallContext(ctx, &raw, "eth_getTransactionByHash", hash)
+	var json *rpcTransaction
+	err = ec.c.CallContext(ctx, &json, "eth_getTransactionByHash", hash)
 	if err != nil {
 		return nil, false, err
-	} else if len(raw) == 0 {
+	} else if json == nil {
 		return nil, false, ethereum.NotFound
-	}
-	if err := json.Unmarshal(raw, &tx); err != nil {
-		return nil, false, err
-	} else if _, r, _ := tx.RawSignatureValues(); r == nil {
+	} else if _, r, _ := json.tx.RawSignatureValues(); r == nil {
 		return nil, false, fmt.Errorf("server returned transaction without signature")
 	}
-	var block struct{ BlockNumber *string }
-	if err := json.Unmarshal(raw, &block); err != nil {
-		return nil, false, err
+	setSenderFromServer(json.tx, json.From, json.BlockHash)
+	return json.tx, json.BlockNumber == nil, nil
+}
+
+// TransactionSender returns the sender address of the given transaction. The transaction
+// must be known to the remote node and included in the blockchain at the given block and
+// index. The sender is the one derived by the protocol at the time of inclusion.
+//
+// There is a fast-path for transactions retrieved by TransactionByHash and
+// TransactionInBlock. Getting their sender address can be done without an RPC interaction.
+func (ec *Client) TransactionSender(ctx context.Context, tx *types.Transaction, block common.Hash, index uint) (common.Address, error) {
+	// Try to load the address from the cache.
+	sender, err := types.Sender(&senderFromServer{blockhash: block}, tx)
+	if err == nil {
+		return sender, nil
 	}
-	return tx, block.BlockNumber == nil, nil
+	var meta struct {
+		Hash common.Hash
+		From common.Address
+	}
+	if err = ec.c.CallContext(ctx, &meta, "eth_getTransactionByBlockHashAndIndex", block, hexutil.Uint64(index)); err != nil {
+		return common.Address{}, err
+	}
+	if meta.Hash == (common.Hash{}) || meta.Hash != tx.Hash() {
+		return common.Address{}, errors.New("wrong inclusion block/index")
+	}
+	return meta.From, nil
 }
 
 // TransactionCount returns the total number of transactions in the given block.
@@ -183,16 +227,17 @@ func (ec *Client) TransactionCount(ctx context.Context, blockHash common.Hash) (
 
 // TransactionInBlock returns a single transaction at index in the given block.
 func (ec *Client) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) {
-	var tx *types.Transaction
-	err := ec.c.CallContext(ctx, &tx, "eth_getTransactionByBlockHashAndIndex", blockHash, hexutil.Uint64(index))
+	var json *rpcTransaction
+	err := ec.c.CallContext(ctx, &json, "eth_getTransactionByBlockHashAndIndex", blockHash, hexutil.Uint64(index))
 	if err == nil {
-		if tx == nil {
+		if json == nil {
 			return nil, ethereum.NotFound
-		} else if _, r, _ := tx.RawSignatureValues(); r == nil {
+		} else if _, r, _ := json.tx.RawSignatureValues(); r == nil {
 			return nil, fmt.Errorf("server returned transaction without signature")
 		}
 	}
-	return tx, err
+	setSenderFromServer(json.tx, json.From, json.BlockHash)
+	return json.tx, err
 }
 
 // TransactionReceipt returns the receipt of a transaction by transaction hash.

vendor/github.com/ethereum/go-ethereum/ethclient/signer.go

@@ -0,0 +1,59 @@
+// Copyright 2017 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 ethclient
+
+import (
+	"errors"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// senderFromServer is a types.Signer that remembers the sender address returned by the RPC
+// server. It is stored in the transaction's sender address cache to avoid an additional
+// request in TransactionSender.
+type senderFromServer struct {
+	addr      common.Address
+	blockhash common.Hash
+}
+
+var errNotCached = errors.New("sender not cached")
+
+func setSenderFromServer(tx *types.Transaction, addr common.Address, block common.Hash) {
+	// Use types.Sender for side-effect to store our signer into the cache.
+	types.Sender(&senderFromServer{addr, block}, tx)
+}
+
+func (s *senderFromServer) Equal(other types.Signer) bool {
+	os, ok := other.(*senderFromServer)
+	return ok && os.blockhash == s.blockhash
+}
+
+func (s *senderFromServer) Sender(tx *types.Transaction) (common.Address, error) {
+	if s.blockhash == (common.Hash{}) {
+		return common.Address{}, errNotCached
+	}
+	return s.addr, nil
+}
+
+func (s *senderFromServer) Hash(tx *types.Transaction) common.Hash {
+	panic("can't sign with senderFromServer")
+}
+func (s *senderFromServer) SignatureValues(tx *types.Transaction, sig []byte) (R, S, V *big.Int, err error) {
+	panic("can't sign with senderFromServer")
+}

vendor/github.com/ethereum/go-ethereum/event/event.go

@@ -56,7 +56,7 @@ func (mux *TypeMux) Subscribe(types ...interface{}) *TypeMuxSubscription {
 	defer mux.mutex.Unlock()
 	if mux.stopped {
 		// set the status to closed so that calling Unsubscribe after this
-		// call will short curuit
+		// call will short circuit.
 		sub.closed = true
 		close(sub.postC)
 	} else {

vendor/github.com/ethereum/go-ethereum/interfaces.go

@@ -102,7 +102,7 @@ type SyncProgress struct {
 	CurrentBlock  uint64 // Current block number where sync is at
 	HighestBlock  uint64 // Highest alleged block number in the chain
 	PulledStates  uint64 // Number of state trie entries already downloaded
-	KnownStates   uint64 // Total number os state trie entries known about
+	KnownStates   uint64 // Total number of state trie entries known about
 }
 
 // ChainSyncReader wraps access to the node's current sync status. If there's no
@@ -129,7 +129,7 @@ type ContractCaller interface {
 	CallContract(ctx context.Context, call CallMsg, blockNumber *big.Int) ([]byte, error)
 }
 
-// FilterQuery contains options for contact log filtering.
+// FilterQuery contains options for contract log filtering.
 type FilterQuery struct {
 	FromBlock *big.Int         // beginning of the queried range, nil means genesis block
 	ToBlock   *big.Int         // end of the range, nil means latest block

vendor/github.com/ethereum/go-ethereum/internal/ethapi/api.go

@@ -54,7 +54,7 @@ type PublicEthereumAPI struct {
 	b Backend
 }
 
-// NewPublicEthereumAPI creates a new Etheruem protocol API.
+// NewPublicEthereumAPI creates a new Ethereum protocol API.
 func NewPublicEthereumAPI(b Backend) *PublicEthereumAPI {
 	return &PublicEthereumAPI{b}
 }
@@ -462,7 +462,7 @@ type PublicBlockChainAPI struct {
 	b Backend
 }
 
-// NewPublicBlockChainAPI creates a new Etheruem blockchain API.
+// NewPublicBlockChainAPI creates a new Ethereum blockchain API.
 func NewPublicBlockChainAPI(b Backend) *PublicBlockChainAPI {
 	return &PublicBlockChainAPI{b}
 }
@@ -594,12 +594,12 @@ type CallArgs struct {
 	Data     hexutil.Bytes   `json:"data"`
 }
 
-func (s *PublicBlockChainAPI) doCall(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber, vmCfg vm.Config) ([]byte, *big.Int, error) {
+func (s *PublicBlockChainAPI) doCall(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber, vmCfg vm.Config) ([]byte, *big.Int, bool, error) {
 	defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now())
 
 	state, header, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
 	if state == nil || err != nil {
-		return nil, common.Big0, err
+		return nil, common.Big0, false, err
 	}
 	// Set sender address or use a default if none specified
 	addr := args.From
@@ -637,7 +637,7 @@ func (s *PublicBlockChainAPI) doCall(ctx context.Context, args CallArgs, blockNr
 	// Get a new instance of the EVM.
 	evm, vmError, err := s.b.GetEVM(ctx, msg, state, header, vmCfg)
 	if err != nil {
-		return nil, common.Big0, err
+		return nil, common.Big0, false, err
 	}
 	// Wait for the context to be done and cancel the evm. Even if the
 	// EVM has finished, cancelling may be done (repeatedly)
@@ -649,26 +649,28 @@ func (s *PublicBlockChainAPI) doCall(ctx context.Context, args CallArgs, blockNr
 	// Setup the gas pool (also for unmetered requests)
 	// and apply the message.
 	gp := new(core.GasPool).AddGas(math.MaxBig256)
-	// TODO utilize failed flag to help gas estimation
-	res, gas, _, err := core.ApplyMessage(evm, msg, gp)
+	res, gas, failed, err := core.ApplyMessage(evm, msg, gp)
 	if err := vmError(); err != nil {
-		return nil, common.Big0, err
+		return nil, common.Big0, false, err
 	}
-	return res, gas, err
+	return res, gas, failed, err
 }
 
 // Call executes the given transaction on the state for the given block number.
 // It doesn't make and changes in the state/blockchain and is useful to execute and retrieve values.
 func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
-	result, _, err := s.doCall(ctx, args, blockNr, vm.Config{DisableGasMetering: true})
+	result, _, _, err := s.doCall(ctx, args, blockNr, vm.Config{DisableGasMetering: true})
 	return (hexutil.Bytes)(result), err
 }
 
 // EstimateGas returns an estimate of the amount of gas needed to execute the given transaction.
 func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (*hexutil.Big, error) {
 	// Binary search the gas requirement, as it may be higher than the amount used
-	var lo, hi uint64
-	if (*big.Int)(&args.Gas).Sign() != 0 {
+	var (
+		lo uint64 = params.TxGas - 1
+		hi uint64
+	)
+	if (*big.Int)(&args.Gas).Uint64() >= params.TxGas {
 		hi = (*big.Int)(&args.Gas).Uint64()
 	} else {
 		// Retrieve the current pending block to act as the gas ceiling
@@ -683,10 +685,10 @@ func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (*
 		mid := (hi + lo) / 2
 		(*big.Int)(&args.Gas).SetUint64(mid)
 
-		_, gas, err := s.doCall(ctx, args, rpc.PendingBlockNumber, vm.Config{})
+		_, _, failed, err := s.doCall(ctx, args, rpc.PendingBlockNumber, vm.Config{})
 
-		// If the transaction became invalid or used all the gas (failed), raise the gas limit
-		if err != nil || gas.Cmp((*big.Int)(&args.Gas)) == 0 {
+		// If the transaction became invalid or execution failed, raise the gas limit
+		if err != nil || failed {
 			lo = mid
 			continue
 		}
@@ -697,10 +699,11 @@ func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (*
 }
 
 // ExecutionResult groups all structured logs emitted by the EVM
-// while replaying a transaction in debug mode as well as the amount of
-// gas used and the return value
+// while replaying a transaction in debug mode as well as transaction
+// execution status, the amount of gas used and the return value
 type ExecutionResult struct {
 	Gas         *big.Int       `json:"gas"`
+	Failed      bool           `json:"failed"`
 	ReturnValue string         `json:"returnValue"`
 	StructLogs  []StructLogRes `json:"structLogs"`
 }
@@ -1005,7 +1008,6 @@ func (s *PublicTransactionPoolAPI) GetTransactionReceipt(hash common.Hash) (map[
 	from, _ := types.Sender(signer, tx)
 
 	fields := map[string]interface{}{
-		"root":              hexutil.Bytes(receipt.PostState),
 		"blockHash":         blockHash,
 		"blockNumber":       hexutil.Uint64(blockNumber),
 		"transactionHash":   hash,
@@ -1018,6 +1020,13 @@ func (s *PublicTransactionPoolAPI) GetTransactionReceipt(hash common.Hash) (map[
 		"logs":              receipt.Logs,
 		"logsBloom":         receipt.Bloom,
 	}
+
+	// Assign receipt status or post state.
+	if len(receipt.PostState) > 0 {
+		fields["root"] = hexutil.Bytes(receipt.PostState)
+	} else {
+		fields["status"] = hexutil.Uint(receipt.Status)
+	}
 	if receipt.Logs == nil {
 		fields["logs"] = [][]*types.Log{}
 	}
@@ -1095,7 +1104,10 @@ func submitTransaction(ctx context.Context, b Backend, tx *types.Transaction) (c
 	}
 	if tx.To() == nil {
 		signer := types.MakeSigner(b.ChainConfig(), b.CurrentBlock().Number())
-		from, _ := types.Sender(signer, tx)
+		from, err := types.Sender(signer, tx)
+		if err != nil {
+			return common.Hash{}, err
+		}
 		addr := crypto.CreateAddress(from, tx.Nonce())
 		log.Info("Submitted contract creation", "fullhash", tx.Hash().Hex(), "contract", addr.Hex())
 	} else {
@@ -1179,29 +1191,12 @@ func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args Sen
 
 // SendRawTransaction will add the signed transaction to the transaction pool.
 // The sender is responsible for signing the transaction and using the correct nonce.
-func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, encodedTx hexutil.Bytes) (string, error) {
+func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, encodedTx hexutil.Bytes) (common.Hash, error) {
 	tx := new(types.Transaction)
 	if err := rlp.DecodeBytes(encodedTx, tx); err != nil {
-		return "", err
+		return common.Hash{}, err
 	}
-
-	if err := s.b.SendTx(ctx, tx); err != nil {
-		return "", err
-	}
-
-	signer := types.MakeSigner(s.b.ChainConfig(), s.b.CurrentBlock().Number())
-	if tx.To() == nil {
-		from, err := types.Sender(signer, tx)
-		if err != nil {
-			return "", err
-		}
-		addr := crypto.CreateAddress(from, tx.Nonce())
-		log.Info("Submitted contract creation", "fullhash", tx.Hash().Hex(), "contract", addr.Hex())
-	} else {
-		log.Info("Submitted transaction", "fullhash", tx.Hash().Hex(), "recipient", tx.To())
-	}
-
-	return tx.Hash().Hex(), nil
+	return submitTransaction(ctx, s.b, tx)
 }
 
 // Sign calculates an ECDSA signature for:
@@ -1325,7 +1320,7 @@ func (s *PublicTransactionPoolAPI) Resend(ctx context.Context, sendArgs SendTxAr
 	return common.Hash{}, fmt.Errorf("Transaction %#x not found", matchTx.Hash())
 }
 
-// PublicDebugAPI is the collection of Etheruem APIs exposed over the public
+// PublicDebugAPI is the collection of Ethereum APIs exposed over the public
 // debugging endpoint.
 type PublicDebugAPI struct {
 	b Backend
@@ -1368,7 +1363,7 @@ func (api *PublicDebugAPI) SeedHash(ctx context.Context, number uint64) (string,
 	return fmt.Sprintf("0x%x", ethash.SeedHash(number)), nil
 }
 
-// PrivateDebugAPI is the collection of Etheruem APIs exposed over the private
+// PrivateDebugAPI is the collection of Ethereum APIs exposed over the private
 // debugging endpoint.
 type PrivateDebugAPI struct {
 	b Backend

vendor/github.com/ethereum/go-ethereum/internal/web3ext/web3ext.go

@@ -528,109 +528,6 @@ const Shh_JS = `
 web3._extend({
 	property: 'shh',
 	methods: [
-		new web3._extend.Method({
-			name: 'setMaxMessageLength',
-			call: 'shh_setMaxMessageLength',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'setMinimumPoW',
-			call: 'shh_setMinimumPoW',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'markTrustedPeer',
-			call: 'shh_markTrustedPeer',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'hasKeyPair',
-			call: 'shh_hasKeyPair',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'deleteKeyPair',
-			call: 'shh_deleteKeyPair',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'newKeyPair',
-			call: 'shh_newKeyPair'
-		}),
-		new web3._extend.Method({
-			name: 'getPublicKey',
-			call: 'shh_getPublicKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'getPrivateKey',
-			call: 'shh_getPrivateKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'newSymKey',
-			call: 'shh_newSymKey',
-		}),
-		new web3._extend.Method({
-			name: 'addSymKey',
-			call: 'shh_addSymKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'generateSymKeyFromPassword',
-			call: 'shh_generateSymKeyFromPassword',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'hasSymKey',
-			call: 'shh_hasSymKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'getSymKey',
-			call: 'shh_getSymKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'deleteSymKey',
-			call: 'shh_deleteSymKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'subscribe',
-			call: 'shh_subscribe',
-			params: 2
-		}),
-		new web3._extend.Method({
-			name: 'unsubscribe',
-			call: 'shh_unsubscribe',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'post',
-			call: 'shh_post',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'publicKey',
-			call: 'shh_getPublicKey',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'getFilterMessages',
-			call: 'shh_getFilterMessages',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'deleteMessageFilter',
-			call: 'shh_deleteMessageFilter',
-			params: 1
-		}),
-		new web3._extend.Method({
-			name: 'newMessageFilter',
-			call: 'shh_newMessageFilter',
-			params: 1
-		}),
 	],
 	properties:
 	[

vendor/github.com/ethereum/go-ethereum/miner/agent.go

@@ -53,7 +53,19 @@ func (self *CpuAgent) Work() chan<- *Work            { return self.workCh }
 func (self *CpuAgent) SetReturnCh(ch chan<- *Result) { self.returnCh = ch }
 
 func (self *CpuAgent) Stop() {
+	if !atomic.CompareAndSwapInt32(&self.isMining, 1, 0) {
+		return // agent already stopped
+	}
 	self.stop <- struct{}{}
+done:
+	// Empty work channel
+	for {
+		select {
+		case <-self.workCh:
+		default:
+			break done
+		}
+	}
 }
 
 func (self *CpuAgent) Start() {
@@ -85,17 +97,6 @@ out:
 			break out
 		}
 	}
-
-done:
-	// Empty work channel
-	for {
-		select {
-		case <-self.workCh:
-		default:
-			break done
-		}
-	}
-	atomic.StoreInt32(&self.isMining, 0)
 }
 
 func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) {

vendor/github.com/ethereum/go-ethereum/miner/remote_agent.go

@@ -163,7 +163,7 @@ func (a *RemoteAgent) SubmitWork(nonce types.BlockNonce, mixDigest, hash common.
 }
 
 // loop monitors mining events on the work and quit channels, updating the internal
-// state of the rmeote miner until a termination is requested.
+// state of the remote miner until a termination is requested.
 //
 // Note, the reason the work and quit channels are passed as parameters is because
 // RemoteAgent.Start() constantly recreates these channels, so the loop code cannot

vendor/github.com/ethereum/go-ethereum/mobile/bind.go

@@ -165,7 +165,7 @@ func (c *BoundContract) Call(opts *CallOpts, out *Interfaces, method string, arg
 
 // Transact invokes the (paid) contract method with params as input values.
 func (c *BoundContract) Transact(opts *TransactOpts, method string, args *Interfaces) (tx *Transaction, _ error) {
-	rawTx, err := c.contract.Transact(&opts.opts, method, args.objects)
+	rawTx, err := c.contract.Transact(&opts.opts, method, args.objects...)
 	if err != nil {
 		return nil, err
 	}

vendor/github.com/ethereum/go-ethereum/mobile/ethclient.go

@@ -77,6 +77,13 @@ func (ec *EthereumClient) GetTransactionByHash(ctx *Context, hash *Hash) (tx *Tr
 	return &Transaction{rawTx}, err
 }
 
+// GetTransactionSender returns the sender address of a transaction. The transaction must
+// be included in blockchain at the given block and index.
+func (ec *EthereumClient) GetTransactionSender(ctx *Context, tx *Transaction, blockhash *Hash, index int) (sender *Address, _ error) {
+	addr, err := ec.client.TransactionSender(ctx.context, tx.tx, blockhash.hash, uint(index))
+	return &Address{addr}, err
+}
+
 // GetTransactionCount returns the total number of transactions in the given block.
 func (ec *EthereumClient) GetTransactionCount(ctx *Context, hash *Hash) (count int, _ error) {
 	rawCount, err := ec.client.TransactionCount(ctx.context, hash.hash)

vendor/github.com/ethereum/go-ethereum/mobile/types.go

@@ -261,10 +261,13 @@ func (tx *Transaction) GetGasPrice() *BigInt { return &BigInt{tx.tx.GasPrice()}
 func (tx *Transaction) GetValue() *BigInt    { return &BigInt{tx.tx.Value()} }
 func (tx *Transaction) GetNonce() int64      { return int64(tx.tx.Nonce()) }
 
-func (tx *Transaction) GetHash() *Hash    { return &Hash{tx.tx.Hash()} }
-func (tx *Transaction) GetSigHash() *Hash { return &Hash{tx.tx.SigHash(types.HomesteadSigner{})} }
-func (tx *Transaction) GetCost() *BigInt  { return &BigInt{tx.tx.Cost()} }
+func (tx *Transaction) GetHash() *Hash   { return &Hash{tx.tx.Hash()} }
+func (tx *Transaction) GetCost() *BigInt { return &BigInt{tx.tx.Cost()} }
 
+// Deprecated: GetSigHash cannot know which signer to use.
+func (tx *Transaction) GetSigHash() *Hash { return &Hash{types.HomesteadSigner{}.Hash(tx.tx)} }
+
+// Deprecated: use EthereumClient.TransactionSender
 func (tx *Transaction) GetFrom(chainID *BigInt) (address *Address, _ error) {
 	var signer types.Signer = types.HomesteadSigner{}
 	if chainID != nil {

vendor/github.com/ethereum/go-ethereum/node/api.go

@@ -17,6 +17,7 @@
 package node
 
 import (
+	"context"
 	"fmt"
 	"strings"
 	"time"
@@ -25,6 +26,7 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/rcrowley/go-metrics"
 )
 
@@ -73,6 +75,44 @@ func (api *PrivateAdminAPI) RemovePeer(url string) (bool, error) {
 	return true, nil
 }
 
+// PeerEvents creates an RPC subscription which receives peer events from the
+// node's p2p.Server
+func (api *PrivateAdminAPI) PeerEvents(ctx context.Context) (*rpc.Subscription, error) {
+	// Make sure the server is running, fail otherwise
+	server := api.node.Server()
+	if server == nil {
+		return nil, ErrNodeStopped
+	}
+
+	// Create the subscription
+	notifier, supported := rpc.NotifierFromContext(ctx)
+	if !supported {
+		return nil, rpc.ErrNotificationsUnsupported
+	}
+	rpcSub := notifier.CreateSubscription()
+
+	go func() {
+		events := make(chan *p2p.PeerEvent)
+		sub := server.SubscribeEvents(events)
+		defer sub.Unsubscribe()
+
+		for {
+			select {
+			case event := <-events:
+				notifier.Notify(rpcSub.ID, event)
+			case <-sub.Err():
+				return
+			case <-rpcSub.Err():
+				return
+			case <-notifier.Closed():
+				return
+			}
+		}
+	}()
+
+	return rpcSub, nil
+}
+
 // StartRPC starts the HTTP RPC API server.
 func (api *PrivateAdminAPI) StartRPC(host *string, port *int, cors *string, apis *string) (bool, error) {
 	api.node.lock.Lock()
@@ -163,7 +203,7 @@ func (api *PrivateAdminAPI) StartWS(host *string, port *int, allowedOrigins *str
 		}
 	}
 
-	if err := api.node.startWS(fmt.Sprintf("%s:%d", *host, *port), api.node.rpcAPIs, modules, origins); err != nil {
+	if err := api.node.startWS(fmt.Sprintf("%s:%d", *host, *port), api.node.rpcAPIs, modules, origins, api.node.config.WSExposeAll); err != nil {
 		return false, err
 	}
 	return true, nil

vendor/github.com/ethereum/go-ethereum/node/config.go

@@ -128,6 +128,13 @@ type Config struct {
 	// If the module list is empty, all RPC API endpoints designated public will be
 	// exposed.
 	WSModules []string `toml:",omitempty"`
+
+	// WSExposeAll exposes all API modules via the WebSocket RPC interface rather
+	// than just the public ones.
+	//
+	// *WARNING* Only set this if the node is running in a trusted network, exposing
+	// private APIs to untrusted users is a major security risk.
+	WSExposeAll bool `toml:",omitempty"`
 }
 
 // IPCEndpoint resolves an IPC endpoint based on a configured value, taking into

vendor/github.com/ethereum/go-ethereum/node/node.go

@@ -261,7 +261,7 @@ func (n *Node) startRPC(services map[reflect.Type]Service) error {
 		n.stopInProc()
 		return err
 	}
-	if err := n.startWS(n.wsEndpoint, apis, n.config.WSModules, n.config.WSOrigins); err != nil {
+	if err := n.startWS(n.wsEndpoint, apis, n.config.WSModules, n.config.WSOrigins, n.config.WSExposeAll); err != nil {
 		n.stopHTTP()
 		n.stopIPC()
 		n.stopInProc()
@@ -412,7 +412,7 @@ func (n *Node) stopHTTP() {
 }
 
 // startWS initializes and starts the websocket RPC endpoint.
-func (n *Node) startWS(endpoint string, apis []rpc.API, modules []string, wsOrigins []string) error {
+func (n *Node) startWS(endpoint string, apis []rpc.API, modules []string, wsOrigins []string, exposeAll bool) error {
 	// Short circuit if the WS endpoint isn't being exposed
 	if endpoint == "" {
 		return nil
@@ -425,7 +425,7 @@ func (n *Node) startWS(endpoint string, apis []rpc.API, modules []string, wsOrig
 	// Register all the APIs exposed by the services
 	handler := rpc.NewServer()
 	for _, api := range apis {
-		if whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) {
+		if exposeAll || whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) {
 			if err := handler.RegisterName(api.Namespace, api.Service); err != nil {
 				return err
 			}
@@ -441,7 +441,7 @@ func (n *Node) startWS(endpoint string, apis []rpc.API, modules []string, wsOrig
 		return err
 	}
 	go rpc.NewWSServer(wsOrigins, handler).Serve(listener)
-	log.Info(fmt.Sprintf("WebSocket endpoint opened: ws://%s", endpoint))
+	log.Info(fmt.Sprintf("WebSocket endpoint opened: ws://%s", listener.Addr()))
 
 	// All listeners booted successfully
 	n.wsEndpoint = endpoint
@@ -556,6 +556,17 @@ func (n *Node) Attach() (*rpc.Client, error) {
 	return rpc.DialInProc(n.inprocHandler), nil
 }
 
+// RPCHandler returns the in-process RPC request handler.
+func (n *Node) RPCHandler() (*rpc.Server, error) {
+	n.lock.RLock()
+	defer n.lock.RUnlock()
+
+	if n.inprocHandler == nil {
+		return nil, ErrNodeStopped
+	}
+	return n.inprocHandler, nil
+}
+
 // Server retrieves the currently running P2P network layer. This method is meant
 // only to inspect fields of the currently running server, life cycle management
 // should be left to this Node entity.

vendor/github.com/ethereum/go-ethereum/p2p/dial.go

@@ -47,6 +47,24 @@ const (
 	maxResolveDelay     = time.Hour
 )
 
+// NodeDialer is used to connect to nodes in the network, typically by using
+// an underlying net.Dialer but also using net.Pipe in tests
+type NodeDialer interface {
+	Dial(*discover.Node) (net.Conn, error)
+}
+
+// TCPDialer implements the NodeDialer interface by using a net.Dialer to
+// create TCP connections to nodes in the network
+type TCPDialer struct {
+	*net.Dialer
+}
+
+// Dial creates a TCP connection to the node
+func (t TCPDialer) Dial(dest *discover.Node) (net.Conn, error) {
+	addr := &net.TCPAddr{IP: dest.IP, Port: int(dest.TCP)}
+	return t.Dialer.Dial("tcp", addr.String())
+}
+
 // dialstate schedules dials and discovery lookups.
 // it get's a chance to compute new tasks on every iteration
 // of the main loop in Server.run.
@@ -318,14 +336,13 @@ func (t *dialTask) resolve(srv *Server) bool {
 
 // dial performs the actual connection attempt.
 func (t *dialTask) dial(srv *Server, dest *discover.Node) bool {
-	addr := &net.TCPAddr{IP: dest.IP, Port: int(dest.TCP)}
-	fd, err := srv.Dialer.Dial("tcp", addr.String())
+	fd, err := srv.Dialer.Dial(dest)
 	if err != nil {
 		log.Trace("Dial error", "task", t, "err", err)
 		return false
 	}
 	mfd := newMeteredConn(fd, false)
-	srv.setupConn(mfd, t.flags, dest)
+	srv.SetupConn(mfd, t.flags, dest)
 	return true
 }
 

vendor/github.com/ethereum/go-ethereum/p2p/discover/node.go

@@ -225,6 +225,11 @@ func (n *Node) UnmarshalText(text []byte) error {
 // The node identifier is a marshaled elliptic curve public key.
 type NodeID [NodeIDBits / 8]byte
 
+// Bytes returns a byte slice representation of the NodeID
+func (n NodeID) Bytes() []byte {
+	return n[:]
+}
+
 // NodeID prints as a long hexadecimal number.
 func (n NodeID) String() string {
 	return fmt.Sprintf("%x", n[:])
@@ -240,6 +245,41 @@ func (n NodeID) TerminalString() string {
 	return hex.EncodeToString(n[:8])
 }
 
+// MarshalText implements the encoding.TextMarshaler interface.
+func (n NodeID) MarshalText() ([]byte, error) {
+	return []byte(hex.EncodeToString(n[:])), nil
+}
+
+// UnmarshalText implements the encoding.TextUnmarshaler interface.
+func (n *NodeID) UnmarshalText(text []byte) error {
+	id, err := HexID(string(text))
+	if err != nil {
+		return err
+	}
+	*n = id
+	return nil
+}
+
+// BytesID converts a byte slice to a NodeID
+func BytesID(b []byte) (NodeID, error) {
+	var id NodeID
+	if len(b) != len(id) {
+		return id, fmt.Errorf("wrong length, want %d bytes", len(id))
+	}
+	copy(id[:], b)
+	return id, nil
+}
+
+// MustBytesID converts a byte slice to a NodeID.
+// It panics if the byte slice is not a valid NodeID.
+func MustBytesID(b []byte) NodeID {
+	id, err := BytesID(b)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
 // HexID converts a hex string to a NodeID.
 // The string may be prefixed with 0x.
 func HexID(in string) (NodeID, error) {

vendor/github.com/ethereum/go-ethereum/p2p/message.go

@@ -27,6 +27,8 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/p2p/discover"
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
@@ -271,3 +273,67 @@ func ExpectMsg(r MsgReader, code uint64, content interface{}) error {
 	}
 	return nil
 }
+
+// msgEventer wraps a MsgReadWriter and sends events whenever a message is sent
+// or received
+type msgEventer struct {
+	MsgReadWriter
+
+	feed     *event.Feed
+	peerID   discover.NodeID
+	Protocol string
+}
+
+// newMsgEventer returns a msgEventer which sends message events to the given
+// feed
+func newMsgEventer(rw MsgReadWriter, feed *event.Feed, peerID discover.NodeID, proto string) *msgEventer {
+	return &msgEventer{
+		MsgReadWriter: rw,
+		feed:          feed,
+		peerID:        peerID,
+		Protocol:      proto,
+	}
+}
+
+// ReadMsg reads a message from the underlying MsgReadWriter and emits a
+// "message received" event
+func (self *msgEventer) ReadMsg() (Msg, error) {
+	msg, err := self.MsgReadWriter.ReadMsg()
+	if err != nil {
+		return msg, err
+	}
+	self.feed.Send(&PeerEvent{
+		Type:     PeerEventTypeMsgRecv,
+		Peer:     self.peerID,
+		Protocol: self.Protocol,
+		MsgCode:  &msg.Code,
+		MsgSize:  &msg.Size,
+	})
+	return msg, nil
+}
+
+// WriteMsg writes a message to the underlying MsgReadWriter and emits a
+// "message sent" event
+func (self *msgEventer) WriteMsg(msg Msg) error {
+	err := self.MsgReadWriter.WriteMsg(msg)
+	if err != nil {
+		return err
+	}
+	self.feed.Send(&PeerEvent{
+		Type:     PeerEventTypeMsgSend,
+		Peer:     self.peerID,
+		Protocol: self.Protocol,
+		MsgCode:  &msg.Code,
+		MsgSize:  &msg.Size,
+	})
+	return nil
+}
+
+// Close closes the underlying MsgReadWriter if it implements the io.Closer
+// interface
+func (self *msgEventer) Close() error {
+	if v, ok := self.MsgReadWriter.(io.Closer); ok {
+		return v.Close()
+	}
+	return nil
+}

vendor/github.com/ethereum/go-ethereum/p2p/nat/natupnp.go

@@ -62,6 +62,7 @@ func (n *upnp) AddMapping(protocol string, extport, intport int, desc string, li
 	}
 	protocol = strings.ToUpper(protocol)
 	lifetimeS := uint32(lifetime / time.Second)
+	n.DeleteMapping(protocol, extport, intport)
 	return n.client.AddPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
 }
 

vendor/github.com/ethereum/go-ethereum/p2p/peer.go

@@ -25,16 +25,19 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common/mclock"
+	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p/discover"
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
 const (
-	baseProtocolVersion    = 4
+	baseProtocolVersion    = 5
 	baseProtocolLength     = uint64(16)
 	baseProtocolMaxMsgSize = 2 * 1024
 
+	snappyProtocolVersion = 5
+
 	pingInterval = 15 * time.Second
 )
 
@@ -60,6 +63,38 @@ type protoHandshake struct {
 	Rest []rlp.RawValue `rlp:"tail"`
 }
 
+// PeerEventType is the type of peer events emitted by a p2p.Server
+type PeerEventType string
+
+const (
+	// PeerEventTypeAdd is the type of event emitted when a peer is added
+	// to a p2p.Server
+	PeerEventTypeAdd PeerEventType = "add"
+
+	// PeerEventTypeDrop is the type of event emitted when a peer is
+	// dropped from a p2p.Server
+	PeerEventTypeDrop PeerEventType = "drop"
+
+	// PeerEventTypeMsgSend is the type of event emitted when a
+	// message is successfully sent to a peer
+	PeerEventTypeMsgSend PeerEventType = "msgsend"
+
+	// PeerEventTypeMsgRecv is the type of event emitted when a
+	// message is received from a peer
+	PeerEventTypeMsgRecv PeerEventType = "msgrecv"
+)
+
+// PeerEvent is an event emitted when peers are either added or dropped from
+// a p2p.Server or when a message is sent or received on a peer connection
+type PeerEvent struct {
+	Type     PeerEventType   `json:"type"`
+	Peer     discover.NodeID `json:"peer"`
+	Error    string          `json:"error,omitempty"`
+	Protocol string          `json:"protocol,omitempty"`
+	MsgCode  *uint64         `json:"msg_code,omitempty"`
+	MsgSize  *uint32         `json:"msg_size,omitempty"`
+}
+
 // Peer represents a connected remote node.
 type Peer struct {
 	rw      *conn
@@ -71,6 +106,9 @@ type Peer struct {
 	protoErr chan error
 	closed   chan struct{}
 	disc     chan DiscReason
+
+	// events receives message send / receive events if set
+	events *event.Feed
 }
 
 // NewPeer returns a peer for testing purposes.
@@ -297,9 +335,13 @@ func (p *Peer) startProtocols(writeStart <-chan struct{}, writeErr chan<- error)
 		proto.closed = p.closed
 		proto.wstart = writeStart
 		proto.werr = writeErr
+		var rw MsgReadWriter = proto
+		if p.events != nil {
+			rw = newMsgEventer(rw, p.events, p.ID(), proto.Name)
+		}
 		p.log.Trace(fmt.Sprintf("Starting protocol %s/%d", proto.Name, proto.Version))
 		go func() {
-			err := proto.Run(p, proto)
+			err := proto.Run(p, rw)
 			if err == nil {
 				p.log.Trace(fmt.Sprintf("Protocol %s/%d returned", proto.Name, proto.Version))
 				err = errProtocolReturned

vendor/github.com/ethereum/go-ethereum/p2p/rlpx.go

@@ -29,6 +29,7 @@ import (
 	"fmt"
 	"hash"
 	"io"
+	"io/ioutil"
 	mrand "math/rand"
 	"net"
 	"sync"
@@ -40,6 +41,7 @@ import (
 	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/p2p/discover"
 	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/golang/snappy"
 )
 
 const (
@@ -68,6 +70,10 @@ const (
 	discWriteTimeout = 1 * time.Second
 )
 
+// errPlainMessageTooLarge is returned if a decompressed message length exceeds
+// the allowed 24 bits (i.e. length >= 16MB).
+var errPlainMessageTooLarge = errors.New("message length >= 16MB")
+
 // rlpx is the transport protocol used by actual (non-test) connections.
 // It wraps the frame encoder with locks and read/write deadlines.
 type rlpx struct {
@@ -127,6 +133,9 @@ func (t *rlpx) doProtoHandshake(our *protoHandshake) (their *protoHandshake, err
 	if err := <-werr; err != nil {
 		return nil, fmt.Errorf("write error: %v", err)
 	}
+	// If the protocol version supports Snappy encoding, upgrade immediately
+	t.rw.snappy = their.Version >= snappyProtocolVersion
+
 	return their, nil
 }
 
@@ -556,6 +565,8 @@ type rlpxFrameRW struct {
 	macCipher  cipher.Block
 	egressMAC  hash.Hash
 	ingressMAC hash.Hash
+
+	snappy bool
 }
 
 func newRLPXFrameRW(conn io.ReadWriter, s secrets) *rlpxFrameRW {
@@ -583,6 +594,17 @@ func newRLPXFrameRW(conn io.ReadWriter, s secrets) *rlpxFrameRW {
 func (rw *rlpxFrameRW) WriteMsg(msg Msg) error {
 	ptype, _ := rlp.EncodeToBytes(msg.Code)
 
+	// if snappy is enabled, compress message now
+	if rw.snappy {
+		if msg.Size > maxUint24 {
+			return errPlainMessageTooLarge
+		}
+		payload, _ := ioutil.ReadAll(msg.Payload)
+		payload = snappy.Encode(nil, payload)
+
+		msg.Payload = bytes.NewReader(payload)
+		msg.Size = uint32(len(payload))
+	}
 	// write header
 	headbuf := make([]byte, 32)
 	fsize := uint32(len(ptype)) + msg.Size
@@ -668,6 +690,26 @@ func (rw *rlpxFrameRW) ReadMsg() (msg Msg, err error) {
 	}
 	msg.Size = uint32(content.Len())
 	msg.Payload = content
+
+	// if snappy is enabled, verify and decompress message
+	if rw.snappy {
+		payload, err := ioutil.ReadAll(msg.Payload)
+		if err != nil {
+			return msg, err
+		}
+		size, err := snappy.DecodedLen(payload)
+		if err != nil {
+			return msg, err
+		}
+		if size > int(maxUint24) {
+			return msg, errPlainMessageTooLarge
+		}
+		payload, err = snappy.Decode(nil, payload)
+		if err != nil {
+			return msg, err
+		}
+		msg.Size, msg.Payload = uint32(size), bytes.NewReader(payload)
+	}
 	return msg, nil
 }
 

vendor/github.com/ethereum/go-ethereum/p2p/server.go

@@ -27,6 +27,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/mclock"
+	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p/discover"
 	"github.com/ethereum/go-ethereum/p2p/discv5"
@@ -130,10 +131,14 @@ type Config struct {
 
 	// If Dialer is set to a non-nil value, the given Dialer
 	// is used to dial outbound peer connections.
-	Dialer *net.Dialer `toml:"-"`
+	Dialer NodeDialer `toml:"-"`
 
 	// If NoDial is true, the server will not dial any peers.
 	NoDial bool `toml:",omitempty"`
+
+	// If EnableMsgEvents is set then the server will emit PeerEvents
+	// whenever a message is sent to or received from a peer
+	EnableMsgEvents bool
 }
 
 // Server manages all peer connections.
@@ -166,6 +171,7 @@ type Server struct {
 	addpeer       chan *conn
 	delpeer       chan peerDrop
 	loopWG        sync.WaitGroup // loop, listenLoop
+	peerFeed      event.Feed
 }
 
 type peerOpFunc func(map[discover.NodeID]*Peer)
@@ -191,7 +197,7 @@ type conn struct {
 	fd net.Conn
 	transport
 	flags connFlag
-	cont  chan error      // The run loop uses cont to signal errors to setupConn.
+	cont  chan error      // The run loop uses cont to signal errors to SetupConn.
 	id    discover.NodeID // valid after the encryption handshake
 	caps  []Cap           // valid after the protocol handshake
 	name  string          // valid after the protocol handshake
@@ -291,6 +297,11 @@ func (srv *Server) RemovePeer(node *discover.Node) {
 	}
 }
 
+// SubscribePeers subscribes the given channel to peer events
+func (srv *Server) SubscribeEvents(ch chan *PeerEvent) event.Subscription {
+	return srv.peerFeed.Subscribe(ch)
+}
+
 // Self returns the local node's endpoint information.
 func (srv *Server) Self() *discover.Node {
 	srv.lock.Lock()
@@ -358,7 +369,7 @@ func (srv *Server) Start() (err error) {
 		srv.newTransport = newRLPX
 	}
 	if srv.Dialer == nil {
-		srv.Dialer = &net.Dialer{Timeout: defaultDialTimeout}
+		srv.Dialer = TCPDialer{&net.Dialer{Timeout: defaultDialTimeout}}
 	}
 	srv.quit = make(chan struct{})
 	srv.addpeer = make(chan *conn)
@@ -536,7 +547,11 @@ running:
 				c.flags |= trustedConn
 			}
 			// TODO: track in-progress inbound node IDs (pre-Peer) to avoid dialing them.
-			c.cont <- srv.encHandshakeChecks(peers, c)
+			select {
+			case c.cont <- srv.encHandshakeChecks(peers, c):
+			case <-srv.quit:
+				break running
+			}
 		case c := <-srv.addpeer:
 			// At this point the connection is past the protocol handshake.
 			// Its capabilities are known and the remote identity is verified.
@@ -544,6 +559,11 @@ running:
 			if err == nil {
 				// The handshakes are done and it passed all checks.
 				p := newPeer(c, srv.Protocols)
+				// If message events are enabled, pass the peerFeed
+				// to the peer
+				if srv.EnableMsgEvents {
+					p.events = &srv.peerFeed
+				}
 				name := truncateName(c.name)
 				log.Debug("Adding p2p peer", "id", c.id, "name", name, "addr", c.fd.RemoteAddr(), "peers", len(peers)+1)
 				peers[c.id] = p
@@ -552,7 +572,11 @@ running:
 			// The dialer logic relies on the assumption that
 			// dial tasks complete after the peer has been added or
 			// discarded. Unblock the task last.
-			c.cont <- err
+			select {
+			case c.cont <- err:
+			case <-srv.quit:
+				break running
+			}
 		case pd := <-srv.delpeer:
 			// A peer disconnected.
 			d := common.PrettyDuration(mclock.Now() - pd.created)
@@ -665,16 +689,16 @@ func (srv *Server) listenLoop() {
 		// Spawn the handler. It will give the slot back when the connection
 		// has been established.
 		go func() {
-			srv.setupConn(fd, inboundConn, nil)
+			srv.SetupConn(fd, inboundConn, nil)
 			slots <- struct{}{}
 		}()
 	}
 }
 
-// setupConn runs the handshakes and attempts to add the connection
+// SetupConn runs the handshakes and attempts to add the connection
 // as a peer. It returns when the connection has been added as a peer
 // or the handshakes have failed.
-func (srv *Server) setupConn(fd net.Conn, flags connFlag, dialDest *discover.Node) {
+func (srv *Server) SetupConn(fd net.Conn, flags connFlag, dialDest *discover.Node) {
 	// Prevent leftover pending conns from entering the handshake.
 	srv.lock.Lock()
 	running := srv.running
@@ -755,7 +779,23 @@ func (srv *Server) runPeer(p *Peer) {
 	if srv.newPeerHook != nil {
 		srv.newPeerHook(p)
 	}
+
+	// broadcast peer add
+	srv.peerFeed.Send(&PeerEvent{
+		Type: PeerEventTypeAdd,
+		Peer: p.ID(),
+	})
+
+	// run the protocol
 	remoteRequested, err := p.run()
+
+	// broadcast peer drop
+	srv.peerFeed.Send(&PeerEvent{
+		Type:  PeerEventTypeDrop,
+		Peer:  p.ID(),
+		Error: err.Error(),
+	})
+
 	// Note: run waits for existing peers to be sent on srv.delpeer
 	// before returning, so this send should not select on srv.quit.
 	srv.delpeer <- peerDrop{p, err, remoteRequested}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/README.md

@@ -0,0 +1,181 @@
+# devp2p Simulations
+
+The `p2p/simulations` package implements a simulation framework which supports
+creating a collection of devp2p nodes, connecting them together to form a
+simulation network, performing simulation actions in that network and then
+extracting useful information.
+
+## Nodes
+
+Each node in a simulation network runs multiple services by wrapping a collection
+of objects which implement the `node.Service` interface meaning they:
+
+* can be started and stopped
+* run p2p protocols
+* expose RPC APIs
+
+This means that any object which implements the `node.Service` interface can be
+used to run a node in the simulation.
+
+## Services
+
+Before running a simulation, a set of service initializers must be registered
+which can then be used to run nodes in the network.
+
+A service initializer is a function with the following signature:
+
+```go
+func(ctx *adapters.ServiceContext) (node.Service, error)
+```
+
+These initializers should be registered by calling the `adapters.RegisterServices`
+function in an `init()` hook:
+
+```go
+func init() {
+	adapters.RegisterServices(adapters.Services{
+		"service1": initService1,
+		"service2": initService2,
+	})
+}
+```
+
+## Node Adapters
+
+The simulation framework includes multiple "node adapters" which are
+responsible for creating an environment in which a node runs.
+
+### SimAdapter
+
+The `SimAdapter` runs nodes in-memory, connecting them using an in-memory,
+synchronous `net.Pipe` and connecting to their RPC server using an in-memory
+`rpc.Client`.
+
+### ExecAdapter
+
+The `ExecAdapter` runs nodes as child processes of the running simulation.
+
+It does this by executing the binary which is running the simulation but
+setting `argv[0]` (i.e. the program name) to `p2p-node` which is then
+detected by an init hook in the child process which runs the `node.Service`
+using the devp2p node stack rather than executing `main()`.
+
+The nodes listen for devp2p connections and WebSocket RPC clients on random
+localhost ports.
+
+### DockerAdapter
+
+The `DockerAdapter` is similar to the `ExecAdapter` but executes `docker run`
+to run the node in a Docker container using a Docker image containing the
+simulation binary at `/bin/p2p-node`.
+
+The Docker image is built using `docker build` when the adapter is initialised,
+meaning no prior setup is necessary other than having a working Docker client.
+
+Each node listens on the external IP of the container and the default p2p and
+RPC ports (`30303` and `8546` respectively).
+
+## Network
+
+A simulation network is created with an ID and default service (which is used
+if a node is created without an explicit service), exposes methods for
+creating, starting, stopping, connecting and disconnecting nodes, and emits
+events when certain actions occur.
+
+### Events
+
+A simulation network emits the following events:
+
+* node event       - when nodes are created / started / stopped
+* connection event - when nodes are connected / disconnected
+* message event    - when a protocol message is sent between two nodes
+
+The events have a "control" flag which when set indicates that the event is the
+outcome of a controlled simulation action (e.g. creating a node or explicitly
+connecting two nodes together).
+
+This is in contrast to a non-control event, otherwise called a "live" event,
+which is the outcome of something happening in the network as a result of a
+control event (e.g. a node actually started up or a connection was actually
+established between two nodes).
+
+Live events are detected by the simulation network by subscribing to node peer
+events via RPC when the nodes start up.
+
+## Testing Framework
+
+The `Simulation` type can be used in tests to perform actions in a simulation
+network and then wait for expectations to be met.
+
+With a running simulation network, the `Simulation.Run` method can be called
+with a `Step` which has the following fields:
+
+* `Action` - a function which performs some action in the network
+
+* `Expect` - an expectation function which returns whether or not a
+    given node meets the expectation
+
+* `Trigger` - a channel which receives node IDs which then trigger a check
+    of the expectation function to be performed against that node
+
+As a concrete example, consider a simulated network of Ethereum nodes. An
+`Action` could be the sending of a transaction, `Expect` it being included in
+a block, and `Trigger` a check for every block that is mined.
+
+On return, the `Simulation.Run` method returns a `StepResult` which can be used
+to determine if all nodes met the expectation, how long it took them to meet
+the expectation and what network events were emitted during the step run.
+
+## HTTP API
+
+The simulation framework includes a HTTP API which can be used to control the
+simulation.
+
+The API is initialised with a particular node adapter and has the following
+endpoints:
+
+```
+GET    /                            Get network information
+POST   /start                       Start all nodes in the network
+POST   /stop                        Stop all nodes in the network
+GET    /events                      Stream network events
+GET    /snapshot                    Take a network snapshot
+POST   /snapshot                    Load a network snapshot
+POST   /nodes                       Create a node
+GET    /nodes                       Get all nodes in the network
+GET    /nodes/:nodeid               Get node information
+POST   /nodes/:nodeid/start         Start a node
+POST   /nodes/:nodeid/stop          Stop a node
+POST   /nodes/:nodeid/conn/:peerid  Connect two nodes
+DELETE /nodes/:nodeid/conn/:peerid  Disconnect two nodes
+GET    /nodes/:nodeid/rpc           Make RPC requests to a node via WebSocket
+```
+
+For convenience, `nodeid` in the URL can be the name of a node rather than its
+ID.
+
+## Command line client
+
+`p2psim` is a command line client for the HTTP API, located in
+`cmd/p2psim`.
+
+It provides the following commands:
+
+```
+p2psim show
+p2psim events [--current] [--filter=FILTER]
+p2psim snapshot
+p2psim load
+p2psim node create [--name=NAME] [--services=SERVICES] [--key=KEY]
+p2psim node list
+p2psim node show <node>
+p2psim node start <node>
+p2psim node stop <node>
+p2psim node connect <node> <peer>
+p2psim node disconnect <node> <peer>
+p2psim node rpc <node> <method> [<args>] [--subscribe]
+```
+
+## Example
+
+See [p2p/simulations/examples/README.md](examples/README.md).

vendor/github.com/ethereum/go-ethereum/p2p/simulations/adapters/docker.go

@@ -0,0 +1,182 @@
+// Copyright 2017 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 adapters
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+
+	"github.com/docker/docker/pkg/reexec"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+)
+
+// DockerAdapter is a NodeAdapter which runs simulation nodes inside Docker
+// containers.
+//
+// A Docker image is built which contains the current binary at /bin/p2p-node
+// which when executed runs the underlying service (see the description
+// of the execP2PNode function for more details)
+type DockerAdapter struct {
+	ExecAdapter
+}
+
+// NewDockerAdapter builds the p2p-node Docker image containing the current
+// binary and returns a DockerAdapter
+func NewDockerAdapter() (*DockerAdapter, error) {
+	// Since Docker containers run on Linux and this adapter runs the
+	// current binary in the container, it must be compiled for Linux.
+	//
+	// It is reasonable to require this because the caller can just
+	// compile the current binary in a Docker container.
+	if runtime.GOOS != "linux" {
+		return nil, errors.New("DockerAdapter can only be used on Linux as it uses the current binary (which must be a Linux binary)")
+	}
+
+	if err := buildDockerImage(); err != nil {
+		return nil, err
+	}
+
+	return &DockerAdapter{
+		ExecAdapter{
+			nodes: make(map[discover.NodeID]*ExecNode),
+		},
+	}, nil
+}
+
+// Name returns the name of the adapter for logging purposes
+func (d *DockerAdapter) Name() string {
+	return "docker-adapter"
+}
+
+// NewNode returns a new DockerNode using the given config
+func (d *DockerAdapter) NewNode(config *NodeConfig) (Node, error) {
+	if len(config.Services) == 0 {
+		return nil, errors.New("node must have at least one service")
+	}
+	for _, service := range config.Services {
+		if _, exists := serviceFuncs[service]; !exists {
+			return nil, fmt.Errorf("unknown node service %q", service)
+		}
+	}
+
+	// generate the config
+	conf := &execNodeConfig{
+		Stack: node.DefaultConfig,
+		Node:  config,
+	}
+	conf.Stack.DataDir = "/data"
+	conf.Stack.WSHost = "0.0.0.0"
+	conf.Stack.WSOrigins = []string{"*"}
+	conf.Stack.WSExposeAll = true
+	conf.Stack.P2P.EnableMsgEvents = false
+	conf.Stack.P2P.NoDiscovery = true
+	conf.Stack.P2P.NAT = nil
+	conf.Stack.NoUSB = true
+
+	node := &DockerNode{
+		ExecNode: ExecNode{
+			ID:      config.ID,
+			Config:  conf,
+			adapter: &d.ExecAdapter,
+		},
+	}
+	node.newCmd = node.dockerCommand
+	d.ExecAdapter.nodes[node.ID] = &node.ExecNode
+	return node, nil
+}
+
+// DockerNode wraps an ExecNode but exec's the current binary in a docker
+// container rather than locally
+type DockerNode struct {
+	ExecNode
+}
+
+// dockerCommand returns a command which exec's the binary in a Docker
+// container.
+//
+// It uses a shell so that we can pass the _P2P_NODE_CONFIG environment
+// variable to the container using the --env flag.
+func (n *DockerNode) dockerCommand() *exec.Cmd {
+	return exec.Command(
+		"sh", "-c",
+		fmt.Sprintf(
+			`exec docker run --interactive --env _P2P_NODE_CONFIG="${_P2P_NODE_CONFIG}" %s p2p-node %s %s`,
+			dockerImage, strings.Join(n.Config.Node.Services, ","), n.ID.String(),
+		),
+	)
+}
+
+// dockerImage is the name of the Docker image which gets built to run the
+// simulation node
+const dockerImage = "p2p-node"
+
+// buildDockerImage builds the Docker image which is used to run the simulation
+// node in a Docker container.
+//
+// It adds the current binary as "p2p-node" so that it runs execP2PNode
+// when executed.
+func buildDockerImage() error {
+	// create a directory to use as the build context
+	dir, err := ioutil.TempDir("", "p2p-docker")
+	if err != nil {
+		return err
+	}
+	defer os.RemoveAll(dir)
+
+	// copy the current binary into the build context
+	bin, err := os.Open(reexec.Self())
+	if err != nil {
+		return err
+	}
+	defer bin.Close()
+	dst, err := os.OpenFile(filepath.Join(dir, "self.bin"), os.O_WRONLY|os.O_CREATE, 0755)
+	if err != nil {
+		return err
+	}
+	defer dst.Close()
+	if _, err := io.Copy(dst, bin); err != nil {
+		return err
+	}
+
+	// create the Dockerfile
+	dockerfile := []byte(`
+FROM ubuntu:16.04
+RUN mkdir /data
+ADD self.bin /bin/p2p-node
+	`)
+	if err := ioutil.WriteFile(filepath.Join(dir, "Dockerfile"), dockerfile, 0644); err != nil {
+		return err
+	}
+
+	// run 'docker build'
+	cmd := exec.Command("docker", "build", "-t", dockerImage, dir)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("error building docker image: %s", err)
+	}
+
+	return nil
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/adapters/exec.go

@@ -0,0 +1,504 @@
+// Copyright 2017 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 adapters
+
+import (
+	"bufio"
+	"context"
+	"crypto/ecdsa"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"os"
+	"os/exec"
+	"os/signal"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"sync"
+	"syscall"
+	"time"
+
+	"github.com/docker/docker/pkg/reexec"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/rpc"
+	"golang.org/x/net/websocket"
+)
+
+// ExecAdapter is a NodeAdapter which runs simulation nodes by executing the
+// current binary as a child process.
+//
+// An init hook is used so that the child process executes the node services
+// (rather than whataver the main() function would normally do), see the
+// execP2PNode function for more information.
+type ExecAdapter struct {
+	// BaseDir is the directory under which the data directories for each
+	// simulation node are created.
+	BaseDir string
+
+	nodes map[discover.NodeID]*ExecNode
+}
+
+// NewExecAdapter returns an ExecAdapter which stores node data in
+// subdirectories of the given base directory
+func NewExecAdapter(baseDir string) *ExecAdapter {
+	return &ExecAdapter{
+		BaseDir: baseDir,
+		nodes:   make(map[discover.NodeID]*ExecNode),
+	}
+}
+
+// Name returns the name of the adapter for logging purposes
+func (e *ExecAdapter) Name() string {
+	return "exec-adapter"
+}
+
+// NewNode returns a new ExecNode using the given config
+func (e *ExecAdapter) NewNode(config *NodeConfig) (Node, error) {
+	if len(config.Services) == 0 {
+		return nil, errors.New("node must have at least one service")
+	}
+	for _, service := range config.Services {
+		if _, exists := serviceFuncs[service]; !exists {
+			return nil, fmt.Errorf("unknown node service %q", service)
+		}
+	}
+
+	// create the node directory using the first 12 characters of the ID
+	// as Unix socket paths cannot be longer than 256 characters
+	dir := filepath.Join(e.BaseDir, config.ID.String()[:12])
+	if err := os.Mkdir(dir, 0755); err != nil {
+		return nil, fmt.Errorf("error creating node directory: %s", err)
+	}
+
+	// generate the config
+	conf := &execNodeConfig{
+		Stack: node.DefaultConfig,
+		Node:  config,
+	}
+	conf.Stack.DataDir = filepath.Join(dir, "data")
+	conf.Stack.WSHost = "127.0.0.1"
+	conf.Stack.WSPort = 0
+	conf.Stack.WSOrigins = []string{"*"}
+	conf.Stack.WSExposeAll = true
+	conf.Stack.P2P.EnableMsgEvents = false
+	conf.Stack.P2P.NoDiscovery = true
+	conf.Stack.P2P.NAT = nil
+	conf.Stack.NoUSB = true
+
+	// listen on a random localhost port (we'll get the actual port after
+	// starting the node through the RPC admin.nodeInfo method)
+	conf.Stack.P2P.ListenAddr = "127.0.0.1:0"
+
+	node := &ExecNode{
+		ID:      config.ID,
+		Dir:     dir,
+		Config:  conf,
+		adapter: e,
+	}
+	node.newCmd = node.execCommand
+	e.nodes[node.ID] = node
+	return node, nil
+}
+
+// ExecNode starts a simulation node by exec'ing the current binary and
+// running the configured services
+type ExecNode struct {
+	ID     discover.NodeID
+	Dir    string
+	Config *execNodeConfig
+	Cmd    *exec.Cmd
+	Info   *p2p.NodeInfo
+
+	adapter *ExecAdapter
+	client  *rpc.Client
+	wsAddr  string
+	newCmd  func() *exec.Cmd
+	key     *ecdsa.PrivateKey
+}
+
+// Addr returns the node's enode URL
+func (n *ExecNode) Addr() []byte {
+	if n.Info == nil {
+		return nil
+	}
+	return []byte(n.Info.Enode)
+}
+
+// Client returns an rpc.Client which can be used to communicate with the
+// underlying services (it is set once the node has started)
+func (n *ExecNode) Client() (*rpc.Client, error) {
+	return n.client, nil
+}
+
+// wsAddrPattern is a regex used to read the WebSocket address from the node's
+// log
+var wsAddrPattern = regexp.MustCompile(`ws://[\d.:]+`)
+
+// Start exec's the node passing the ID and service as command line arguments
+// and the node config encoded as JSON in the _P2P_NODE_CONFIG environment
+// variable
+func (n *ExecNode) Start(snapshots map[string][]byte) (err error) {
+	if n.Cmd != nil {
+		return errors.New("already started")
+	}
+	defer func() {
+		if err != nil {
+			log.Error("node failed to start", "err", err)
+			n.Stop()
+		}
+	}()
+
+	// encode a copy of the config containing the snapshot
+	confCopy := *n.Config
+	confCopy.Snapshots = snapshots
+	confCopy.PeerAddrs = make(map[string]string)
+	for id, node := range n.adapter.nodes {
+		confCopy.PeerAddrs[id.String()] = node.wsAddr
+	}
+	confData, err := json.Marshal(confCopy)
+	if err != nil {
+		return fmt.Errorf("error generating node config: %s", err)
+	}
+
+	// use a pipe for stderr so we can both copy the node's stderr to
+	// os.Stderr and read the WebSocket address from the logs
+	stderrR, stderrW := io.Pipe()
+	stderr := io.MultiWriter(os.Stderr, stderrW)
+
+	// start the node
+	cmd := n.newCmd()
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = stderr
+	cmd.Env = append(os.Environ(), fmt.Sprintf("_P2P_NODE_CONFIG=%s", confData))
+	if err := cmd.Start(); err != nil {
+		return fmt.Errorf("error starting node: %s", err)
+	}
+	n.Cmd = cmd
+
+	// read the WebSocket address from the stderr logs
+	var wsAddr string
+	wsAddrC := make(chan string)
+	go func() {
+		s := bufio.NewScanner(stderrR)
+		for s.Scan() {
+			if strings.Contains(s.Text(), "WebSocket endpoint opened:") {
+				wsAddrC <- wsAddrPattern.FindString(s.Text())
+			}
+		}
+	}()
+	select {
+	case wsAddr = <-wsAddrC:
+		if wsAddr == "" {
+			return errors.New("failed to read WebSocket address from stderr")
+		}
+	case <-time.After(10 * time.Second):
+		return errors.New("timed out waiting for WebSocket address on stderr")
+	}
+
+	// create the RPC client and load the node info
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	client, err := rpc.DialWebsocket(ctx, wsAddr, "")
+	if err != nil {
+		return fmt.Errorf("error dialing rpc websocket: %s", err)
+	}
+	var info p2p.NodeInfo
+	if err := client.CallContext(ctx, &info, "admin_nodeInfo"); err != nil {
+		return fmt.Errorf("error getting node info: %s", err)
+	}
+	n.client = client
+	n.wsAddr = wsAddr
+	n.Info = &info
+
+	return nil
+}
+
+// execCommand returns a command which runs the node locally by exec'ing
+// the current binary but setting argv[0] to "p2p-node" so that the child
+// runs execP2PNode
+func (n *ExecNode) execCommand() *exec.Cmd {
+	return &exec.Cmd{
+		Path: reexec.Self(),
+		Args: []string{"p2p-node", strings.Join(n.Config.Node.Services, ","), n.ID.String()},
+	}
+}
+
+// Stop stops the node by first sending SIGTERM and then SIGKILL if the node
+// doesn't stop within 5s
+func (n *ExecNode) Stop() error {
+	if n.Cmd == nil {
+		return nil
+	}
+	defer func() {
+		n.Cmd = nil
+	}()
+
+	if n.client != nil {
+		n.client.Close()
+		n.client = nil
+		n.wsAddr = ""
+		n.Info = nil
+	}
+
+	if err := n.Cmd.Process.Signal(syscall.SIGTERM); err != nil {
+		return n.Cmd.Process.Kill()
+	}
+	waitErr := make(chan error)
+	go func() {
+		waitErr <- n.Cmd.Wait()
+	}()
+	select {
+	case err := <-waitErr:
+		return err
+	case <-time.After(5 * time.Second):
+		return n.Cmd.Process.Kill()
+	}
+}
+
+// NodeInfo returns information about the node
+func (n *ExecNode) NodeInfo() *p2p.NodeInfo {
+	info := &p2p.NodeInfo{
+		ID: n.ID.String(),
+	}
+	if n.client != nil {
+		n.client.Call(&info, "admin_nodeInfo")
+	}
+	return info
+}
+
+// ServeRPC serves RPC requests over the given connection by dialling the
+// node's WebSocket address and joining the two connections
+func (n *ExecNode) ServeRPC(clientConn net.Conn) error {
+	conn, err := websocket.Dial(n.wsAddr, "", "http://localhost")
+	if err != nil {
+		return err
+	}
+	var wg sync.WaitGroup
+	wg.Add(2)
+	join := func(src, dst net.Conn) {
+		defer wg.Done()
+		io.Copy(dst, src)
+		// close the write end of the destination connection
+		if cw, ok := dst.(interface {
+			CloseWrite() error
+		}); ok {
+			cw.CloseWrite()
+		} else {
+			dst.Close()
+		}
+	}
+	go join(conn, clientConn)
+	go join(clientConn, conn)
+	wg.Wait()
+	return nil
+}
+
+// Snapshots creates snapshots of the services by calling the
+// simulation_snapshot RPC method
+func (n *ExecNode) Snapshots() (map[string][]byte, error) {
+	if n.client == nil {
+		return nil, errors.New("RPC not started")
+	}
+	var snapshots map[string][]byte
+	return snapshots, n.client.Call(&snapshots, "simulation_snapshot")
+}
+
+func init() {
+	// register a reexec function to start a devp2p node when the current
+	// binary is executed as "p2p-node"
+	reexec.Register("p2p-node", execP2PNode)
+}
+
+// execNodeConfig is used to serialize the node configuration so it can be
+// passed to the child process as a JSON encoded environment variable
+type execNodeConfig struct {
+	Stack     node.Config       `json:"stack"`
+	Node      *NodeConfig       `json:"node"`
+	Snapshots map[string][]byte `json:"snapshots,omitempty"`
+	PeerAddrs map[string]string `json:"peer_addrs,omitempty"`
+}
+
+// execP2PNode starts a devp2p node when the current binary is executed with
+// argv[0] being "p2p-node", reading the service / ID from argv[1] / argv[2]
+// and the node config from the _P2P_NODE_CONFIG environment variable
+func execP2PNode() {
+	glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.LogfmtFormat()))
+	glogger.Verbosity(log.LvlInfo)
+	log.Root().SetHandler(glogger)
+
+	// read the services from argv
+	serviceNames := strings.Split(os.Args[1], ",")
+
+	// decode the config
+	confEnv := os.Getenv("_P2P_NODE_CONFIG")
+	if confEnv == "" {
+		log.Crit("missing _P2P_NODE_CONFIG")
+	}
+	var conf execNodeConfig
+	if err := json.Unmarshal([]byte(confEnv), &conf); err != nil {
+		log.Crit("error decoding _P2P_NODE_CONFIG", "err", err)
+	}
+	conf.Stack.P2P.PrivateKey = conf.Node.PrivateKey
+
+	// use explicit IP address in ListenAddr so that Enode URL is usable
+	externalIP := func() string {
+		addrs, err := net.InterfaceAddrs()
+		if err != nil {
+			log.Crit("error getting IP address", "err", err)
+		}
+		for _, addr := range addrs {
+			if ip, ok := addr.(*net.IPNet); ok && !ip.IP.IsLoopback() {
+				return ip.IP.String()
+			}
+		}
+		log.Crit("unable to determine explicit IP address")
+		return ""
+	}
+	if strings.HasPrefix(conf.Stack.P2P.ListenAddr, ":") {
+		conf.Stack.P2P.ListenAddr = externalIP() + conf.Stack.P2P.ListenAddr
+	}
+	if conf.Stack.WSHost == "0.0.0.0" {
+		conf.Stack.WSHost = externalIP()
+	}
+
+	// initialize the devp2p stack
+	stack, err := node.New(&conf.Stack)
+	if err != nil {
+		log.Crit("error creating node stack", "err", err)
+	}
+
+	// register the services, collecting them into a map so we can wrap
+	// them in a snapshot service
+	services := make(map[string]node.Service, len(serviceNames))
+	for _, name := range serviceNames {
+		serviceFunc, exists := serviceFuncs[name]
+		if !exists {
+			log.Crit("unknown node service", "name", name)
+		}
+		constructor := func(nodeCtx *node.ServiceContext) (node.Service, error) {
+			ctx := &ServiceContext{
+				RPCDialer:   &wsRPCDialer{addrs: conf.PeerAddrs},
+				NodeContext: nodeCtx,
+				Config:      conf.Node,
+			}
+			if conf.Snapshots != nil {
+				ctx.Snapshot = conf.Snapshots[name]
+			}
+			service, err := serviceFunc(ctx)
+			if err != nil {
+				return nil, err
+			}
+			services[name] = service
+			return service, nil
+		}
+		if err := stack.Register(constructor); err != nil {
+			log.Crit("error starting service", "name", name, "err", err)
+		}
+	}
+
+	// register the snapshot service
+	if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+		return &snapshotService{services}, nil
+	}); err != nil {
+		log.Crit("error starting snapshot service", "err", err)
+	}
+
+	// start the stack
+	if err := stack.Start(); err != nil {
+		log.Crit("error stating node stack", "err", err)
+	}
+
+	// stop the stack if we get a SIGTERM signal
+	go func() {
+		sigc := make(chan os.Signal, 1)
+		signal.Notify(sigc, syscall.SIGTERM)
+		defer signal.Stop(sigc)
+		<-sigc
+		log.Info("Received SIGTERM, shutting down...")
+		stack.Stop()
+	}()
+
+	// wait for the stack to exit
+	stack.Wait()
+}
+
+// snapshotService is a node.Service which wraps a list of services and
+// exposes an API to generate a snapshot of those services
+type snapshotService struct {
+	services map[string]node.Service
+}
+
+func (s *snapshotService) APIs() []rpc.API {
+	return []rpc.API{{
+		Namespace: "simulation",
+		Version:   "1.0",
+		Service:   SnapshotAPI{s.services},
+	}}
+}
+
+func (s *snapshotService) Protocols() []p2p.Protocol {
+	return nil
+}
+
+func (s *snapshotService) Start(*p2p.Server) error {
+	return nil
+}
+
+func (s *snapshotService) Stop() error {
+	return nil
+}
+
+// SnapshotAPI provides an RPC method to create snapshots of services
+type SnapshotAPI struct {
+	services map[string]node.Service
+}
+
+func (api SnapshotAPI) Snapshot() (map[string][]byte, error) {
+	snapshots := make(map[string][]byte)
+	for name, service := range api.services {
+		if s, ok := service.(interface {
+			Snapshot() ([]byte, error)
+		}); ok {
+			snap, err := s.Snapshot()
+			if err != nil {
+				return nil, err
+			}
+			snapshots[name] = snap
+		}
+	}
+	return snapshots, nil
+}
+
+type wsRPCDialer struct {
+	addrs map[string]string
+}
+
+// DialRPC implements the RPCDialer interface by creating a WebSocket RPC
+// client of the given node
+func (w *wsRPCDialer) DialRPC(id discover.NodeID) (*rpc.Client, error) {
+	addr, ok := w.addrs[id.String()]
+	if !ok {
+		return nil, fmt.Errorf("unknown node: %s", id)
+	}
+	return rpc.DialWebsocket(context.Background(), addr, "http://localhost")
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/adapters/inproc.go

@@ -0,0 +1,314 @@
+// Copyright 2017 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 adapters
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"net"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/rpc"
+)
+
+// SimAdapter is a NodeAdapter which creates in-memory simulation nodes and
+// connects them using in-memory net.Pipe connections
+type SimAdapter struct {
+	mtx      sync.RWMutex
+	nodes    map[discover.NodeID]*SimNode
+	services map[string]ServiceFunc
+}
+
+// NewSimAdapter creates a SimAdapter which is capable of running in-memory
+// simulation nodes running any of the given services (the services to run on a
+// particular node are passed to the NewNode function in the NodeConfig)
+func NewSimAdapter(services map[string]ServiceFunc) *SimAdapter {
+	return &SimAdapter{
+		nodes:    make(map[discover.NodeID]*SimNode),
+		services: services,
+	}
+}
+
+// Name returns the name of the adapter for logging purposes
+func (s *SimAdapter) Name() string {
+	return "sim-adapter"
+}
+
+// NewNode returns a new SimNode using the given config
+func (s *SimAdapter) NewNode(config *NodeConfig) (Node, error) {
+	s.mtx.Lock()
+	defer s.mtx.Unlock()
+
+	// check a node with the ID doesn't already exist
+	id := config.ID
+	if _, exists := s.nodes[id]; exists {
+		return nil, fmt.Errorf("node already exists: %s", id)
+	}
+
+	// check the services are valid
+	if len(config.Services) == 0 {
+		return nil, errors.New("node must have at least one service")
+	}
+	for _, service := range config.Services {
+		if _, exists := s.services[service]; !exists {
+			return nil, fmt.Errorf("unknown node service %q", service)
+		}
+	}
+
+	n, err := node.New(&node.Config{
+		P2P: p2p.Config{
+			PrivateKey:      config.PrivateKey,
+			MaxPeers:        math.MaxInt32,
+			NoDiscovery:     true,
+			Dialer:          s,
+			EnableMsgEvents: true,
+		},
+		NoUSB: true,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	simNode := &SimNode{
+		ID:      id,
+		config:  config,
+		node:    n,
+		adapter: s,
+		running: make(map[string]node.Service),
+	}
+	s.nodes[id] = simNode
+	return simNode, nil
+}
+
+// Dial implements the p2p.NodeDialer interface by connecting to the node using
+// an in-memory net.Pipe connection
+func (s *SimAdapter) Dial(dest *discover.Node) (conn net.Conn, err error) {
+	node, ok := s.GetNode(dest.ID)
+	if !ok {
+		return nil, fmt.Errorf("unknown node: %s", dest.ID)
+	}
+	srv := node.Server()
+	if srv == nil {
+		return nil, fmt.Errorf("node not running: %s", dest.ID)
+	}
+	pipe1, pipe2 := net.Pipe()
+	go srv.SetupConn(pipe1, 0, nil)
+	return pipe2, nil
+}
+
+// DialRPC implements the RPCDialer interface by creating an in-memory RPC
+// client of the given node
+func (s *SimAdapter) DialRPC(id discover.NodeID) (*rpc.Client, error) {
+	node, ok := s.GetNode(id)
+	if !ok {
+		return nil, fmt.Errorf("unknown node: %s", id)
+	}
+	handler, err := node.node.RPCHandler()
+	if err != nil {
+		return nil, err
+	}
+	return rpc.DialInProc(handler), nil
+}
+
+// GetNode returns the node with the given ID if it exists
+func (s *SimAdapter) GetNode(id discover.NodeID) (*SimNode, bool) {
+	s.mtx.RLock()
+	defer s.mtx.RUnlock()
+	node, ok := s.nodes[id]
+	return node, ok
+}
+
+// SimNode is an in-memory simulation node which connects to other nodes using
+// an in-memory net.Pipe connection (see SimAdapter.Dial), running devp2p
+// protocols directly over that pipe
+type SimNode struct {
+	lock         sync.RWMutex
+	ID           discover.NodeID
+	config       *NodeConfig
+	adapter      *SimAdapter
+	node         *node.Node
+	running      map[string]node.Service
+	client       *rpc.Client
+	registerOnce sync.Once
+}
+
+// Addr returns the node's discovery address
+func (self *SimNode) Addr() []byte {
+	return []byte(self.Node().String())
+}
+
+// Node returns a discover.Node representing the SimNode
+func (self *SimNode) Node() *discover.Node {
+	return discover.NewNode(self.ID, net.IP{127, 0, 0, 1}, 30303, 30303)
+}
+
+// Client returns an rpc.Client which can be used to communicate with the
+// underlying services (it is set once the node has started)
+func (self *SimNode) Client() (*rpc.Client, error) {
+	self.lock.RLock()
+	defer self.lock.RUnlock()
+	if self.client == nil {
+		return nil, errors.New("node not started")
+	}
+	return self.client, nil
+}
+
+// ServeRPC serves RPC requests over the given connection by creating an
+// in-memory client to the node's RPC server
+func (self *SimNode) ServeRPC(conn net.Conn) error {
+	handler, err := self.node.RPCHandler()
+	if err != nil {
+		return err
+	}
+	handler.ServeCodec(rpc.NewJSONCodec(conn), rpc.OptionMethodInvocation|rpc.OptionSubscriptions)
+	return nil
+}
+
+// Snapshots creates snapshots of the services by calling the
+// simulation_snapshot RPC method
+func (self *SimNode) Snapshots() (map[string][]byte, error) {
+	self.lock.RLock()
+	services := make(map[string]node.Service, len(self.running))
+	for name, service := range self.running {
+		services[name] = service
+	}
+	self.lock.RUnlock()
+	if len(services) == 0 {
+		return nil, errors.New("no running services")
+	}
+	snapshots := make(map[string][]byte)
+	for name, service := range services {
+		if s, ok := service.(interface {
+			Snapshot() ([]byte, error)
+		}); ok {
+			snap, err := s.Snapshot()
+			if err != nil {
+				return nil, err
+			}
+			snapshots[name] = snap
+		}
+	}
+	return snapshots, nil
+}
+
+// Start registers the services and starts the underlying devp2p node
+func (self *SimNode) Start(snapshots map[string][]byte) error {
+	newService := func(name string) func(ctx *node.ServiceContext) (node.Service, error) {
+		return func(nodeCtx *node.ServiceContext) (node.Service, error) {
+			ctx := &ServiceContext{
+				RPCDialer:   self.adapter,
+				NodeContext: nodeCtx,
+				Config:      self.config,
+			}
+			if snapshots != nil {
+				ctx.Snapshot = snapshots[name]
+			}
+			serviceFunc := self.adapter.services[name]
+			service, err := serviceFunc(ctx)
+			if err != nil {
+				return nil, err
+			}
+			self.running[name] = service
+			return service, nil
+		}
+	}
+
+	// ensure we only register the services once in the case of the node
+	// being stopped and then started again
+	var regErr error
+	self.registerOnce.Do(func() {
+		for _, name := range self.config.Services {
+			if err := self.node.Register(newService(name)); err != nil {
+				regErr = err
+				return
+			}
+		}
+	})
+	if regErr != nil {
+		return regErr
+	}
+
+	if err := self.node.Start(); err != nil {
+		return err
+	}
+
+	// create an in-process RPC client
+	handler, err := self.node.RPCHandler()
+	if err != nil {
+		return err
+	}
+
+	self.lock.Lock()
+	self.client = rpc.DialInProc(handler)
+	self.lock.Unlock()
+
+	return nil
+}
+
+// Stop closes the RPC client and stops the underlying devp2p node
+func (self *SimNode) Stop() error {
+	self.lock.Lock()
+	if self.client != nil {
+		self.client.Close()
+		self.client = nil
+	}
+	self.lock.Unlock()
+	return self.node.Stop()
+}
+
+// Services returns a copy of the underlying services
+func (self *SimNode) Services() []node.Service {
+	self.lock.RLock()
+	defer self.lock.RUnlock()
+	services := make([]node.Service, 0, len(self.running))
+	for _, service := range self.running {
+		services = append(services, service)
+	}
+	return services
+}
+
+// Server returns the underlying p2p.Server
+func (self *SimNode) Server() *p2p.Server {
+	return self.node.Server()
+}
+
+// SubscribeEvents subscribes the given channel to peer events from the
+// underlying p2p.Server
+func (self *SimNode) SubscribeEvents(ch chan *p2p.PeerEvent) event.Subscription {
+	srv := self.Server()
+	if srv == nil {
+		panic("node not running")
+	}
+	return srv.SubscribeEvents(ch)
+}
+
+// NodeInfo returns information about the node
+func (self *SimNode) NodeInfo() *p2p.NodeInfo {
+	server := self.Server()
+	if server == nil {
+		return &p2p.NodeInfo{
+			ID:    self.ID.String(),
+			Enode: self.Node().String(),
+		}
+	}
+	return server.NodeInfo()
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/adapters/types.go

@@ -0,0 +1,215 @@
+// Copyright 2017 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 adapters
+
+import (
+	"crypto/ecdsa"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"net"
+	"os"
+
+	"github.com/docker/docker/pkg/reexec"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/rpc"
+)
+
+// Node represents a node in a simulation network which is created by a
+// NodeAdapter, for example:
+//
+// * SimNode    - An in-memory node
+// * ExecNode   - A child process node
+// * DockerNode - A Docker container node
+//
+type Node interface {
+	// Addr returns the node's address (e.g. an Enode URL)
+	Addr() []byte
+
+	// Client returns the RPC client which is created once the node is
+	// up and running
+	Client() (*rpc.Client, error)
+
+	// ServeRPC serves RPC requests over the given connection
+	ServeRPC(net.Conn) error
+
+	// Start starts the node with the given snapshots
+	Start(snapshots map[string][]byte) error
+
+	// Stop stops the node
+	Stop() error
+
+	// NodeInfo returns information about the node
+	NodeInfo() *p2p.NodeInfo
+
+	// Snapshots creates snapshots of the running services
+	Snapshots() (map[string][]byte, error)
+}
+
+// NodeAdapter is used to create Nodes in a simulation network
+type NodeAdapter interface {
+	// Name returns the name of the adapter for logging purposes
+	Name() string
+
+	// NewNode creates a new node with the given configuration
+	NewNode(config *NodeConfig) (Node, error)
+}
+
+// NodeConfig is the configuration used to start a node in a simulation
+// network
+type NodeConfig struct {
+	// ID is the node's ID which is used to identify the node in the
+	// simulation network
+	ID discover.NodeID
+
+	// PrivateKey is the node's private key which is used by the devp2p
+	// stack to encrypt communications
+	PrivateKey *ecdsa.PrivateKey
+
+	// Name is a human friendly name for the node like "node01"
+	Name string
+
+	// Services are the names of the services which should be run when
+	// starting the node (for SimNodes it should be the names of services
+	// contained in SimAdapter.services, for other nodes it should be
+	// services registered by calling the RegisterService function)
+	Services []string
+}
+
+// nodeConfigJSON is used to encode and decode NodeConfig as JSON by encoding
+// all fields as strings
+type nodeConfigJSON struct {
+	ID         string   `json:"id"`
+	PrivateKey string   `json:"private_key"`
+	Name       string   `json:"name"`
+	Services   []string `json:"services"`
+}
+
+// MarshalJSON implements the json.Marshaler interface by encoding the config
+// fields as strings
+func (n *NodeConfig) MarshalJSON() ([]byte, error) {
+	confJSON := nodeConfigJSON{
+		ID:       n.ID.String(),
+		Name:     n.Name,
+		Services: n.Services,
+	}
+	if n.PrivateKey != nil {
+		confJSON.PrivateKey = hex.EncodeToString(crypto.FromECDSA(n.PrivateKey))
+	}
+	return json.Marshal(confJSON)
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface by decoding the json
+// string values into the config fields
+func (n *NodeConfig) UnmarshalJSON(data []byte) error {
+	var confJSON nodeConfigJSON
+	if err := json.Unmarshal(data, &confJSON); err != nil {
+		return err
+	}
+
+	if confJSON.ID != "" {
+		nodeID, err := discover.HexID(confJSON.ID)
+		if err != nil {
+			return err
+		}
+		n.ID = nodeID
+	}
+
+	if confJSON.PrivateKey != "" {
+		key, err := hex.DecodeString(confJSON.PrivateKey)
+		if err != nil {
+			return err
+		}
+		privKey, err := crypto.ToECDSA(key)
+		if err != nil {
+			return err
+		}
+		n.PrivateKey = privKey
+	}
+
+	n.Name = confJSON.Name
+	n.Services = confJSON.Services
+
+	return nil
+}
+
+// RandomNodeConfig returns node configuration with a randomly generated ID and
+// PrivateKey
+func RandomNodeConfig() *NodeConfig {
+	key, err := crypto.GenerateKey()
+	if err != nil {
+		panic("unable to generate key")
+	}
+	var id discover.NodeID
+	pubkey := crypto.FromECDSAPub(&key.PublicKey)
+	copy(id[:], pubkey[1:])
+	return &NodeConfig{
+		ID:         id,
+		PrivateKey: key,
+	}
+}
+
+// ServiceContext is a collection of options and methods which can be utilised
+// when starting services
+type ServiceContext struct {
+	RPCDialer
+
+	NodeContext *node.ServiceContext
+	Config      *NodeConfig
+	Snapshot    []byte
+}
+
+// RPCDialer is used when initialising services which need to connect to
+// other nodes in the network (for example a simulated Swarm node which needs
+// to connect to a Geth node to resolve ENS names)
+type RPCDialer interface {
+	DialRPC(id discover.NodeID) (*rpc.Client, error)
+}
+
+// Services is a collection of services which can be run in a simulation
+type Services map[string]ServiceFunc
+
+// ServiceFunc returns a node.Service which can be used to boot a devp2p node
+type ServiceFunc func(ctx *ServiceContext) (node.Service, error)
+
+// serviceFuncs is a map of registered services which are used to boot devp2p
+// nodes
+var serviceFuncs = make(Services)
+
+// RegisterServices registers the given Services which can then be used to
+// start devp2p nodes using either the Exec or Docker adapters.
+//
+// It should be called in an init function so that it has the opportunity to
+// execute the services before main() is called.
+func RegisterServices(services Services) {
+	for name, f := range services {
+		if _, exists := serviceFuncs[name]; exists {
+			panic(fmt.Sprintf("node service already exists: %q", name))
+		}
+		serviceFuncs[name] = f
+	}
+
+	// now we have registered the services, run reexec.Init() which will
+	// potentially start one of the services if the current binary has
+	// been exec'd with argv[0] set to "p2p-node"
+	if reexec.Init() {
+		os.Exit(0)
+	}
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/events.go

@@ -0,0 +1,108 @@
+// Copyright 2017 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 simulations
+
+import (
+	"fmt"
+	"time"
+)
+
+// EventType is the type of event emitted by a simulation network
+type EventType string
+
+const (
+	// EventTypeNode is the type of event emitted when a node is either
+	// created, started or stopped
+	EventTypeNode EventType = "node"
+
+	// EventTypeConn is the type of event emitted when a connection is
+	// is either established or dropped between two nodes
+	EventTypeConn EventType = "conn"
+
+	// EventTypeMsg is the type of event emitted when a p2p message it
+	// sent between two nodes
+	EventTypeMsg EventType = "msg"
+)
+
+// Event is an event emitted by a simulation network
+type Event struct {
+	// Type is the type of the event
+	Type EventType `json:"type"`
+
+	// Time is the time the event happened
+	Time time.Time `json:"time"`
+
+	// Control indicates whether the event is the result of a controlled
+	// action in the network
+	Control bool `json:"control"`
+
+	// Node is set if the type is EventTypeNode
+	Node *Node `json:"node,omitempty"`
+
+	// Conn is set if the type is EventTypeConn
+	Conn *Conn `json:"conn,omitempty"`
+
+	// Msg is set if the type is EventTypeMsg
+	Msg *Msg `json:"msg,omitempty"`
+}
+
+// NewEvent creates a new event for the given object which should be either a
+// Node, Conn or Msg.
+//
+// The object is copied so that the event represents the state of the object
+// when NewEvent is called.
+func NewEvent(v interface{}) *Event {
+	event := &Event{Time: time.Now()}
+	switch v := v.(type) {
+	case *Node:
+		event.Type = EventTypeNode
+		node := *v
+		event.Node = &node
+	case *Conn:
+		event.Type = EventTypeConn
+		conn := *v
+		event.Conn = &conn
+	case *Msg:
+		event.Type = EventTypeMsg
+		msg := *v
+		event.Msg = &msg
+	default:
+		panic(fmt.Sprintf("invalid event type: %T", v))
+	}
+	return event
+}
+
+// ControlEvent creates a new control event
+func ControlEvent(v interface{}) *Event {
+	event := NewEvent(v)
+	event.Control = true
+	return event
+}
+
+// String returns the string representation of the event
+func (e *Event) String() string {
+	switch e.Type {
+	case EventTypeNode:
+		return fmt.Sprintf("<node-event> id: %s up: %t", e.Node.ID().TerminalString(), e.Node.Up)
+	case EventTypeConn:
+		return fmt.Sprintf("<conn-event> nodes: %s->%s up: %t", e.Conn.One.TerminalString(), e.Conn.Other.TerminalString(), e.Conn.Up)
+	case EventTypeMsg:
+		return fmt.Sprintf("<msg-event> nodes: %s->%s proto: %s, code: %d, received: %t", e.Msg.One.TerminalString(), e.Msg.Other.TerminalString(), e.Msg.Protocol, e.Msg.Code, e.Msg.Received)
+	default:
+		return ""
+	}
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/examples/README.md

@@ -0,0 +1,39 @@
+# devp2p simulation examples
+
+## ping-pong
+
+`ping-pong.go` implements a simulation network which contains nodes running a
+simple "ping-pong" protocol where nodes send a ping message to all their
+connected peers every 10s and receive pong messages in return.
+
+To run the simulation, run `go run ping-pong.go` in one terminal to start the
+simulation API and `./ping-pong.sh` in another to start and connect the nodes:
+
+```
+$ go run ping-pong.go
+INFO [08-15|13:53:49] using sim adapter
+INFO [08-15|13:53:49] starting simulation server on 0.0.0.0:8888...
+```
+
+```
+$ ./ping-pong.sh
+---> 13:58:12 creating 10 nodes
+Created node01
+Started node01
+...
+Created node10
+Started node10
+---> 13:58:13 connecting node01 to all other nodes
+Connected node01 to node02
+...
+Connected node01 to node10
+---> 13:58:14 done
+```
+
+Use the `--adapter` flag to choose the adapter type:
+
+```
+$ go run ping-pong.go --adapter exec
+INFO [08-15|14:01:14] using exec adapter                       tmpdir=/var/folders/k6/wpsgfg4n23ddbc6f5cnw5qg00000gn/T/p2p-example992833779
+INFO [08-15|14:01:14] starting simulation server on 0.0.0.0:8888...
+```

vendor/github.com/ethereum/go-ethereum/p2p/simulations/examples/ping-pong.go

@@ -0,0 +1,184 @@
+// Copyright 2017 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 main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"sync/atomic"
+	"time"
+
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/simulations"
+	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
+	"github.com/ethereum/go-ethereum/rpc"
+)
+
+var adapterType = flag.String("adapter", "sim", `node adapter to use (one of "sim", "exec" or "docker")`)
+
+// main() starts a simulation network which contains nodes running a simple
+// ping-pong protocol
+func main() {
+	flag.Parse()
+
+	// set the log level to Trace
+	log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(false))))
+
+	// register a single ping-pong service
+	services := map[string]adapters.ServiceFunc{
+		"ping-pong": func(ctx *adapters.ServiceContext) (node.Service, error) {
+			return newPingPongService(ctx.Config.ID), nil
+		},
+	}
+	adapters.RegisterServices(services)
+
+	// create the NodeAdapter
+	var adapter adapters.NodeAdapter
+
+	switch *adapterType {
+
+	case "sim":
+		log.Info("using sim adapter")
+		adapter = adapters.NewSimAdapter(services)
+
+	case "exec":
+		tmpdir, err := ioutil.TempDir("", "p2p-example")
+		if err != nil {
+			log.Crit("error creating temp dir", "err", err)
+		}
+		defer os.RemoveAll(tmpdir)
+		log.Info("using exec adapter", "tmpdir", tmpdir)
+		adapter = adapters.NewExecAdapter(tmpdir)
+
+	case "docker":
+		log.Info("using docker adapter")
+		var err error
+		adapter, err = adapters.NewDockerAdapter()
+		if err != nil {
+			log.Crit("error creating docker adapter", "err", err)
+		}
+
+	default:
+		log.Crit(fmt.Sprintf("unknown node adapter %q", *adapterType))
+	}
+
+	// start the HTTP API
+	log.Info("starting simulation server on 0.0.0.0:8888...")
+	network := simulations.NewNetwork(adapter, &simulations.NetworkConfig{
+		DefaultService: "ping-pong",
+	})
+	if err := http.ListenAndServe(":8888", simulations.NewServer(network)); err != nil {
+		log.Crit("error starting simulation server", "err", err)
+	}
+}
+
+// pingPongService runs a ping-pong protocol between nodes where each node
+// sends a ping to all its connected peers every 10s and receives a pong in
+// return
+type pingPongService struct {
+	id       discover.NodeID
+	log      log.Logger
+	received int64
+}
+
+func newPingPongService(id discover.NodeID) *pingPongService {
+	return &pingPongService{
+		id:  id,
+		log: log.New("node.id", id),
+	}
+}
+
+func (p *pingPongService) Protocols() []p2p.Protocol {
+	return []p2p.Protocol{{
+		Name:     "ping-pong",
+		Version:  1,
+		Length:   2,
+		Run:      p.Run,
+		NodeInfo: p.Info,
+	}}
+}
+
+func (p *pingPongService) APIs() []rpc.API {
+	return nil
+}
+
+func (p *pingPongService) Start(server *p2p.Server) error {
+	p.log.Info("ping-pong service starting")
+	return nil
+}
+
+func (p *pingPongService) Stop() error {
+	p.log.Info("ping-pong service stopping")
+	return nil
+}
+
+func (p *pingPongService) Info() interface{} {
+	return struct {
+		Received int64 `json:"received"`
+	}{
+		atomic.LoadInt64(&p.received),
+	}
+}
+
+const (
+	pingMsgCode = iota
+	pongMsgCode
+)
+
+// Run implements the ping-pong protocol which sends ping messages to the peer
+// at 10s intervals, and responds to pings with pong messages.
+func (p *pingPongService) Run(peer *p2p.Peer, rw p2p.MsgReadWriter) error {
+	log := p.log.New("peer.id", peer.ID())
+
+	errC := make(chan error)
+	go func() {
+		for range time.Tick(10 * time.Second) {
+			log.Info("sending ping")
+			if err := p2p.Send(rw, pingMsgCode, "PING"); err != nil {
+				errC <- err
+				return
+			}
+		}
+	}()
+	go func() {
+		for {
+			msg, err := rw.ReadMsg()
+			if err != nil {
+				errC <- err
+				return
+			}
+			payload, err := ioutil.ReadAll(msg.Payload)
+			if err != nil {
+				errC <- err
+				return
+			}
+			log.Info("received message", "msg.code", msg.Code, "msg.payload", string(payload))
+			atomic.AddInt64(&p.received, 1)
+			if msg.Code == pingMsgCode {
+				log.Info("sending pong")
+				go p2p.Send(rw, pongMsgCode, "PONG")
+			}
+		}
+	}()
+	return <-errC
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/examples/ping-pong.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+#
+# Boot a ping-pong network simulation using the HTTP API started by ping-pong.go
+
+set -e
+
+main() {
+  if ! which p2psim &>/dev/null; then
+    fail "missing p2psim binary (you need to build cmd/p2psim and put it in \$PATH)"
+  fi
+
+  info "creating 10 nodes"
+  for i in $(seq 1 10); do
+    p2psim node create --name "$(node_name $i)"
+    p2psim node start "$(node_name $i)"
+  done
+
+  info "connecting node01 to all other nodes"
+  for i in $(seq 2 10); do
+    p2psim node connect "node01" "$(node_name $i)"
+  done
+
+  info "done"
+}
+
+node_name() {
+  local num=$1
+  echo "node$(printf '%02d' $num)"
+}
+
+info() {
+  echo -e "\033[1;32m---> $(date +%H:%M:%S) ${@}\033[0m"
+}
+
+fail() {
+  echo -e "\033[1;31mERROR: ${@}\033[0m" >&2
+  exit 1
+}
+
+main "$@"

vendor/github.com/ethereum/go-ethereum/p2p/simulations/http.go

@@ -0,0 +1,680 @@
+// Copyright 2017 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 simulations
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/julienschmidt/httprouter"
+	"golang.org/x/net/websocket"
+)
+
+// DefaultClient is the default simulation API client which expects the API
+// to be running at http://localhost:8888
+var DefaultClient = NewClient("http://localhost:8888")
+
+// Client is a client for the simulation HTTP API which supports creating
+// and managing simulation networks
+type Client struct {
+	URL string
+
+	client *http.Client
+}
+
+// NewClient returns a new simulation API client
+func NewClient(url string) *Client {
+	return &Client{
+		URL:    url,
+		client: http.DefaultClient,
+	}
+}
+
+// GetNetwork returns details of the network
+func (c *Client) GetNetwork() (*Network, error) {
+	network := &Network{}
+	return network, c.Get("/", network)
+}
+
+// StartNetwork starts all existing nodes in the simulation network
+func (c *Client) StartNetwork() error {
+	return c.Post("/start", nil, nil)
+}
+
+// StopNetwork stops all existing nodes in a simulation network
+func (c *Client) StopNetwork() error {
+	return c.Post("/stop", nil, nil)
+}
+
+// CreateSnapshot creates a network snapshot
+func (c *Client) CreateSnapshot() (*Snapshot, error) {
+	snap := &Snapshot{}
+	return snap, c.Get("/snapshot", snap)
+}
+
+// LoadSnapshot loads a snapshot into the network
+func (c *Client) LoadSnapshot(snap *Snapshot) error {
+	return c.Post("/snapshot", snap, nil)
+}
+
+// SubscribeOpts is a collection of options to use when subscribing to network
+// events
+type SubscribeOpts struct {
+	// Current instructs the server to send events for existing nodes and
+	// connections first
+	Current bool
+
+	// Filter instructs the server to only send a subset of message events
+	Filter string
+}
+
+// SubscribeNetwork subscribes to network events which are sent from the server
+// as a server-sent-events stream, optionally receiving events for existing
+// nodes and connections and filtering message events
+func (c *Client) SubscribeNetwork(events chan *Event, opts SubscribeOpts) (event.Subscription, error) {
+	url := fmt.Sprintf("%s/events?current=%t&filter=%s", c.URL, opts.Current, opts.Filter)
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Accept", "text/event-stream")
+	res, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	if res.StatusCode != http.StatusOK {
+		response, _ := ioutil.ReadAll(res.Body)
+		res.Body.Close()
+		return nil, fmt.Errorf("unexpected HTTP status: %s: %s", res.Status, response)
+	}
+
+	// define a producer function to pass to event.Subscription
+	// which reads server-sent events from res.Body and sends
+	// them to the events channel
+	producer := func(stop <-chan struct{}) error {
+		defer res.Body.Close()
+
+		// read lines from res.Body in a goroutine so that we are
+		// always reading from the stop channel
+		lines := make(chan string)
+		errC := make(chan error, 1)
+		go func() {
+			s := bufio.NewScanner(res.Body)
+			for s.Scan() {
+				select {
+				case lines <- s.Text():
+				case <-stop:
+					return
+				}
+			}
+			errC <- s.Err()
+		}()
+
+		// detect any lines which start with "data:", decode the data
+		// into an event and send it to the events channel
+		for {
+			select {
+			case line := <-lines:
+				if !strings.HasPrefix(line, "data:") {
+					continue
+				}
+				data := strings.TrimSpace(strings.TrimPrefix(line, "data:"))
+				event := &Event{}
+				if err := json.Unmarshal([]byte(data), event); err != nil {
+					return fmt.Errorf("error decoding SSE event: %s", err)
+				}
+				select {
+				case events <- event:
+				case <-stop:
+					return nil
+				}
+			case err := <-errC:
+				return err
+			case <-stop:
+				return nil
+			}
+		}
+	}
+
+	return event.NewSubscription(producer), nil
+}
+
+// GetNodes returns all nodes which exist in the network
+func (c *Client) GetNodes() ([]*p2p.NodeInfo, error) {
+	var nodes []*p2p.NodeInfo
+	return nodes, c.Get("/nodes", &nodes)
+}
+
+// CreateNode creates a node in the network using the given configuration
+func (c *Client) CreateNode(config *adapters.NodeConfig) (*p2p.NodeInfo, error) {
+	node := &p2p.NodeInfo{}
+	return node, c.Post("/nodes", config, node)
+}
+
+// GetNode returns details of a node
+func (c *Client) GetNode(nodeID string) (*p2p.NodeInfo, error) {
+	node := &p2p.NodeInfo{}
+	return node, c.Get(fmt.Sprintf("/nodes/%s", nodeID), node)
+}
+
+// StartNode starts a node
+func (c *Client) StartNode(nodeID string) error {
+	return c.Post(fmt.Sprintf("/nodes/%s/start", nodeID), nil, nil)
+}
+
+// StopNode stops a node
+func (c *Client) StopNode(nodeID string) error {
+	return c.Post(fmt.Sprintf("/nodes/%s/stop", nodeID), nil, nil)
+}
+
+// ConnectNode connects a node to a peer node
+func (c *Client) ConnectNode(nodeID, peerID string) error {
+	return c.Post(fmt.Sprintf("/nodes/%s/conn/%s", nodeID, peerID), nil, nil)
+}
+
+// DisconnectNode disconnects a node from a peer node
+func (c *Client) DisconnectNode(nodeID, peerID string) error {
+	return c.Delete(fmt.Sprintf("/nodes/%s/conn/%s", nodeID, peerID))
+}
+
+// RPCClient returns an RPC client connected to a node
+func (c *Client) RPCClient(ctx context.Context, nodeID string) (*rpc.Client, error) {
+	baseURL := strings.Replace(c.URL, "http", "ws", 1)
+	return rpc.DialWebsocket(ctx, fmt.Sprintf("%s/nodes/%s/rpc", baseURL, nodeID), "")
+}
+
+// Get performs a HTTP GET request decoding the resulting JSON response
+// into "out"
+func (c *Client) Get(path string, out interface{}) error {
+	return c.Send("GET", path, nil, out)
+}
+
+// Post performs a HTTP POST request sending "in" as the JSON body and
+// decoding the resulting JSON response into "out"
+func (c *Client) Post(path string, in, out interface{}) error {
+	return c.Send("POST", path, in, out)
+}
+
+// Delete performs a HTTP DELETE request
+func (c *Client) Delete(path string) error {
+	return c.Send("DELETE", path, nil, nil)
+}
+
+// Send performs a HTTP request, sending "in" as the JSON request body and
+// decoding the JSON response into "out"
+func (c *Client) Send(method, path string, in, out interface{}) error {
+	var body []byte
+	if in != nil {
+		var err error
+		body, err = json.Marshal(in)
+		if err != nil {
+			return err
+		}
+	}
+	req, err := http.NewRequest(method, c.URL+path, bytes.NewReader(body))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Accept", "application/json")
+	res, err := c.client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer res.Body.Close()
+	if res.StatusCode != http.StatusOK && res.StatusCode != http.StatusCreated {
+		response, _ := ioutil.ReadAll(res.Body)
+		return fmt.Errorf("unexpected HTTP status: %s: %s", res.Status, response)
+	}
+	if out != nil {
+		if err := json.NewDecoder(res.Body).Decode(out); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Server is an HTTP server providing an API to manage a simulation network
+type Server struct {
+	router  *httprouter.Router
+	network *Network
+}
+
+// NewServer returns a new simulation API server
+func NewServer(network *Network) *Server {
+	s := &Server{
+		router:  httprouter.New(),
+		network: network,
+	}
+
+	s.OPTIONS("/", s.Options)
+	s.GET("/", s.GetNetwork)
+	s.POST("/start", s.StartNetwork)
+	s.POST("/stop", s.StopNetwork)
+	s.GET("/events", s.StreamNetworkEvents)
+	s.GET("/snapshot", s.CreateSnapshot)
+	s.POST("/snapshot", s.LoadSnapshot)
+	s.POST("/nodes", s.CreateNode)
+	s.GET("/nodes", s.GetNodes)
+	s.GET("/nodes/:nodeid", s.GetNode)
+	s.POST("/nodes/:nodeid/start", s.StartNode)
+	s.POST("/nodes/:nodeid/stop", s.StopNode)
+	s.POST("/nodes/:nodeid/conn/:peerid", s.ConnectNode)
+	s.DELETE("/nodes/:nodeid/conn/:peerid", s.DisconnectNode)
+	s.GET("/nodes/:nodeid/rpc", s.NodeRPC)
+
+	return s
+}
+
+// GetNetwork returns details of the network
+func (s *Server) GetNetwork(w http.ResponseWriter, req *http.Request) {
+	s.JSON(w, http.StatusOK, s.network)
+}
+
+// StartNetwork starts all nodes in the network
+func (s *Server) StartNetwork(w http.ResponseWriter, req *http.Request) {
+	if err := s.network.StartAll(); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+}
+
+// StopNetwork stops all nodes in the network
+func (s *Server) StopNetwork(w http.ResponseWriter, req *http.Request) {
+	if err := s.network.StopAll(); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+}
+
+// StreamNetworkEvents streams network events as a server-sent-events stream
+func (s *Server) StreamNetworkEvents(w http.ResponseWriter, req *http.Request) {
+	events := make(chan *Event)
+	sub := s.network.events.Subscribe(events)
+	defer sub.Unsubscribe()
+
+	// stop the stream if the client goes away
+	var clientGone <-chan bool
+	if cn, ok := w.(http.CloseNotifier); ok {
+		clientGone = cn.CloseNotify()
+	}
+
+	// write writes the given event and data to the stream like:
+	//
+	// event: <event>
+	// data: <data>
+	//
+	write := func(event, data string) {
+		fmt.Fprintf(w, "event: %s\n", event)
+		fmt.Fprintf(w, "data: %s\n\n", data)
+		if fw, ok := w.(http.Flusher); ok {
+			fw.Flush()
+		}
+	}
+	writeEvent := func(event *Event) error {
+		data, err := json.Marshal(event)
+		if err != nil {
+			return err
+		}
+		write("network", string(data))
+		return nil
+	}
+	writeErr := func(err error) {
+		write("error", err.Error())
+	}
+
+	// check if filtering has been requested
+	var filters MsgFilters
+	if filterParam := req.URL.Query().Get("filter"); filterParam != "" {
+		var err error
+		filters, err = NewMsgFilters(filterParam)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+			return
+		}
+	}
+
+	w.Header().Set("Content-Type", "text/event-stream; charset=utf-8")
+	w.WriteHeader(http.StatusOK)
+	fmt.Fprintf(w, "\n\n")
+	if fw, ok := w.(http.Flusher); ok {
+		fw.Flush()
+	}
+
+	// optionally send the existing nodes and connections
+	if req.URL.Query().Get("current") == "true" {
+		snap, err := s.network.Snapshot()
+		if err != nil {
+			writeErr(err)
+			return
+		}
+		for _, node := range snap.Nodes {
+			event := NewEvent(&node.Node)
+			if err := writeEvent(event); err != nil {
+				writeErr(err)
+				return
+			}
+		}
+		for _, conn := range snap.Conns {
+			event := NewEvent(&conn)
+			if err := writeEvent(event); err != nil {
+				writeErr(err)
+				return
+			}
+		}
+	}
+
+	for {
+		select {
+		case event := <-events:
+			// only send message events which match the filters
+			if event.Msg != nil && !filters.Match(event.Msg) {
+				continue
+			}
+			if err := writeEvent(event); err != nil {
+				writeErr(err)
+				return
+			}
+		case <-clientGone:
+			return
+		}
+	}
+}
+
+// NewMsgFilters constructs a collection of message filters from a URL query
+// parameter.
+//
+// The parameter is expected to be a dash-separated list of individual filters,
+// each having the format '<proto>:<codes>', where <proto> is the name of a
+// protocol and <codes> is a comma-separated list of message codes.
+//
+// A message code of '*' or '-1' is considered a wildcard and matches any code.
+func NewMsgFilters(filterParam string) (MsgFilters, error) {
+	filters := make(MsgFilters)
+	for _, filter := range strings.Split(filterParam, "-") {
+		protoCodes := strings.SplitN(filter, ":", 2)
+		if len(protoCodes) != 2 || protoCodes[0] == "" || protoCodes[1] == "" {
+			return nil, fmt.Errorf("invalid message filter: %s", filter)
+		}
+		proto := protoCodes[0]
+		for _, code := range strings.Split(protoCodes[1], ",") {
+			if code == "*" || code == "-1" {
+				filters[MsgFilter{Proto: proto, Code: -1}] = struct{}{}
+				continue
+			}
+			n, err := strconv.ParseUint(code, 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid message code: %s", code)
+			}
+			filters[MsgFilter{Proto: proto, Code: int64(n)}] = struct{}{}
+		}
+	}
+	return filters, nil
+}
+
+// MsgFilters is a collection of filters which are used to filter message
+// events
+type MsgFilters map[MsgFilter]struct{}
+
+// Match checks if the given message matches any of the filters
+func (m MsgFilters) Match(msg *Msg) bool {
+	// check if there is a wildcard filter for the message's protocol
+	if _, ok := m[MsgFilter{Proto: msg.Protocol, Code: -1}]; ok {
+		return true
+	}
+
+	// check if there is a filter for the message's protocol and code
+	if _, ok := m[MsgFilter{Proto: msg.Protocol, Code: int64(msg.Code)}]; ok {
+		return true
+	}
+
+	return false
+}
+
+// MsgFilter is used to filter message events based on protocol and message
+// code
+type MsgFilter struct {
+	// Proto is matched against a message's protocol
+	Proto string
+
+	// Code is matched against a message's code, with -1 matching all codes
+	Code int64
+}
+
+// CreateSnapshot creates a network snapshot
+func (s *Server) CreateSnapshot(w http.ResponseWriter, req *http.Request) {
+	snap, err := s.network.Snapshot()
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusOK, snap)
+}
+
+// LoadSnapshot loads a snapshot into the network
+func (s *Server) LoadSnapshot(w http.ResponseWriter, req *http.Request) {
+	snap := &Snapshot{}
+	if err := json.NewDecoder(req.Body).Decode(snap); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if err := s.network.Load(snap); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusOK, s.network)
+}
+
+// CreateNode creates a node in the network using the given configuration
+func (s *Server) CreateNode(w http.ResponseWriter, req *http.Request) {
+	config := adapters.RandomNodeConfig()
+	err := json.NewDecoder(req.Body).Decode(config)
+	if err != nil && err != io.EOF {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	node, err := s.network.NewNodeWithConfig(config)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusCreated, node.NodeInfo())
+}
+
+// GetNodes returns all nodes which exist in the network
+func (s *Server) GetNodes(w http.ResponseWriter, req *http.Request) {
+	nodes := s.network.GetNodes()
+
+	infos := make([]*p2p.NodeInfo, len(nodes))
+	for i, node := range nodes {
+		infos[i] = node.NodeInfo()
+	}
+
+	s.JSON(w, http.StatusOK, infos)
+}
+
+// GetNode returns details of a node
+func (s *Server) GetNode(w http.ResponseWriter, req *http.Request) {
+	node := req.Context().Value("node").(*Node)
+
+	s.JSON(w, http.StatusOK, node.NodeInfo())
+}
+
+// StartNode starts a node
+func (s *Server) StartNode(w http.ResponseWriter, req *http.Request) {
+	node := req.Context().Value("node").(*Node)
+
+	if err := s.network.Start(node.ID()); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusOK, node.NodeInfo())
+}
+
+// StopNode stops a node
+func (s *Server) StopNode(w http.ResponseWriter, req *http.Request) {
+	node := req.Context().Value("node").(*Node)
+
+	if err := s.network.Stop(node.ID()); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusOK, node.NodeInfo())
+}
+
+// ConnectNode connects a node to a peer node
+func (s *Server) ConnectNode(w http.ResponseWriter, req *http.Request) {
+	node := req.Context().Value("node").(*Node)
+	peer := req.Context().Value("peer").(*Node)
+
+	if err := s.network.Connect(node.ID(), peer.ID()); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusOK, node.NodeInfo())
+}
+
+// DisconnectNode disconnects a node from a peer node
+func (s *Server) DisconnectNode(w http.ResponseWriter, req *http.Request) {
+	node := req.Context().Value("node").(*Node)
+	peer := req.Context().Value("peer").(*Node)
+
+	if err := s.network.Disconnect(node.ID(), peer.ID()); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	s.JSON(w, http.StatusOK, node.NodeInfo())
+}
+
+// Options responds to the OPTIONS HTTP method by returning a 200 OK response
+// with the "Access-Control-Allow-Headers" header set to "Content-Type"
+func (s *Server) Options(w http.ResponseWriter, req *http.Request) {
+	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+	w.WriteHeader(http.StatusOK)
+}
+
+// NodeRPC forwards RPC requests to a node in the network via a WebSocket
+// connection
+func (s *Server) NodeRPC(w http.ResponseWriter, req *http.Request) {
+	node := req.Context().Value("node").(*Node)
+
+	handler := func(conn *websocket.Conn) {
+		node.ServeRPC(conn)
+	}
+
+	websocket.Server{Handler: handler}.ServeHTTP(w, req)
+}
+
+// ServeHTTP implements the http.Handler interface by delegating to the
+// underlying httprouter.Router
+func (s *Server) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	s.router.ServeHTTP(w, req)
+}
+
+// GET registers a handler for GET requests to a particular path
+func (s *Server) GET(path string, handle http.HandlerFunc) {
+	s.router.GET(path, s.wrapHandler(handle))
+}
+
+// POST registers a handler for POST requests to a particular path
+func (s *Server) POST(path string, handle http.HandlerFunc) {
+	s.router.POST(path, s.wrapHandler(handle))
+}
+
+// DELETE registers a handler for DELETE requests to a particular path
+func (s *Server) DELETE(path string, handle http.HandlerFunc) {
+	s.router.DELETE(path, s.wrapHandler(handle))
+}
+
+// OPTIONS registers a handler for OPTIONS requests to a particular path
+func (s *Server) OPTIONS(path string, handle http.HandlerFunc) {
+	s.router.OPTIONS("/*path", s.wrapHandler(handle))
+}
+
+// JSON sends "data" as a JSON HTTP response
+func (s *Server) JSON(w http.ResponseWriter, status int, data interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	json.NewEncoder(w).Encode(data)
+}
+
+// wrapHandler returns a httprouter.Handle which wraps a http.HandlerFunc by
+// populating request.Context with any objects from the URL params
+func (s *Server) wrapHandler(handler http.HandlerFunc) httprouter.Handle {
+	return func(w http.ResponseWriter, req *http.Request, params httprouter.Params) {
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+
+		ctx := context.Background()
+
+		if id := params.ByName("nodeid"); id != "" {
+			var node *Node
+			if nodeID, err := discover.HexID(id); err == nil {
+				node = s.network.GetNode(nodeID)
+			} else {
+				node = s.network.GetNodeByName(id)
+			}
+			if node == nil {
+				http.NotFound(w, req)
+				return
+			}
+			ctx = context.WithValue(ctx, "node", node)
+		}
+
+		if id := params.ByName("peerid"); id != "" {
+			var peer *Node
+			if peerID, err := discover.HexID(id); err == nil {
+				peer = s.network.GetNode(peerID)
+			} else {
+				peer = s.network.GetNodeByName(id)
+			}
+			if peer == nil {
+				http.NotFound(w, req)
+				return
+			}
+			ctx = context.WithValue(ctx, "peer", peer)
+		}
+
+		handler(w, req.WithContext(ctx))
+	}
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/network.go

@@ -0,0 +1,680 @@
+// Copyright 2017 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 simulations
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
+)
+
+// NetworkConfig defines configuration options for starting a Network
+type NetworkConfig struct {
+	ID             string `json:"id"`
+	DefaultService string `json:"default_service,omitempty"`
+}
+
+// Network models a p2p simulation network which consists of a collection of
+// simulated nodes and the connections which exist between them.
+//
+// The Network has a single NodeAdapter which is responsible for actually
+// starting nodes and connecting them together.
+//
+// The Network emits events when nodes are started and stopped, when they are
+// connected and disconnected, and also when messages are sent between nodes.
+type Network struct {
+	NetworkConfig
+
+	Nodes   []*Node `json:"nodes"`
+	nodeMap map[discover.NodeID]int
+
+	Conns   []*Conn `json:"conns"`
+	connMap map[string]int
+
+	nodeAdapter adapters.NodeAdapter
+	events      event.Feed
+	lock        sync.RWMutex
+	quitc       chan struct{}
+}
+
+// NewNetwork returns a Network which uses the given NodeAdapter and NetworkConfig
+func NewNetwork(nodeAdapter adapters.NodeAdapter, conf *NetworkConfig) *Network {
+	return &Network{
+		NetworkConfig: *conf,
+		nodeAdapter:   nodeAdapter,
+		nodeMap:       make(map[discover.NodeID]int),
+		connMap:       make(map[string]int),
+		quitc:         make(chan struct{}),
+	}
+}
+
+// Events returns the output event feed of the Network.
+func (self *Network) Events() *event.Feed {
+	return &self.events
+}
+
+// NewNode adds a new node to the network with a random ID
+func (self *Network) NewNode() (*Node, error) {
+	conf := adapters.RandomNodeConfig()
+	conf.Services = []string{self.DefaultService}
+	return self.NewNodeWithConfig(conf)
+}
+
+// NewNodeWithConfig adds a new node to the network with the given config,
+// returning an error if a node with the same ID or name already exists
+func (self *Network) NewNodeWithConfig(conf *adapters.NodeConfig) (*Node, error) {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+
+	// create a random ID and PrivateKey if not set
+	if conf.ID == (discover.NodeID{}) {
+		c := adapters.RandomNodeConfig()
+		conf.ID = c.ID
+		conf.PrivateKey = c.PrivateKey
+	}
+	id := conf.ID
+
+	// assign a name to the node if not set
+	if conf.Name == "" {
+		conf.Name = fmt.Sprintf("node%02d", len(self.Nodes)+1)
+	}
+
+	// check the node doesn't already exist
+	if node := self.getNode(id); node != nil {
+		return nil, fmt.Errorf("node with ID %q already exists", id)
+	}
+	if node := self.getNodeByName(conf.Name); node != nil {
+		return nil, fmt.Errorf("node with name %q already exists", conf.Name)
+	}
+
+	// if no services are configured, use the default service
+	if len(conf.Services) == 0 {
+		conf.Services = []string{self.DefaultService}
+	}
+
+	// use the NodeAdapter to create the node
+	adapterNode, err := self.nodeAdapter.NewNode(conf)
+	if err != nil {
+		return nil, err
+	}
+	node := &Node{
+		Node:   adapterNode,
+		Config: conf,
+	}
+	log.Trace(fmt.Sprintf("node %v created", id))
+	self.nodeMap[id] = len(self.Nodes)
+	self.Nodes = append(self.Nodes, node)
+
+	// emit a "control" event
+	self.events.Send(ControlEvent(node))
+
+	return node, nil
+}
+
+// Config returns the network configuration
+func (self *Network) Config() *NetworkConfig {
+	return &self.NetworkConfig
+}
+
+// StartAll starts all nodes in the network
+func (self *Network) StartAll() error {
+	for _, node := range self.Nodes {
+		if node.Up {
+			continue
+		}
+		if err := self.Start(node.ID()); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// StopAll stops all nodes in the network
+func (self *Network) StopAll() error {
+	for _, node := range self.Nodes {
+		if !node.Up {
+			continue
+		}
+		if err := self.Stop(node.ID()); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Start starts the node with the given ID
+func (self *Network) Start(id discover.NodeID) error {
+	return self.startWithSnapshots(id, nil)
+}
+
+// startWithSnapshots starts the node with the given ID using the give
+// snapshots
+func (self *Network) startWithSnapshots(id discover.NodeID, snapshots map[string][]byte) error {
+	node := self.GetNode(id)
+	if node == nil {
+		return fmt.Errorf("node %v does not exist", id)
+	}
+	if node.Up {
+		return fmt.Errorf("node %v already up", id)
+	}
+	log.Trace(fmt.Sprintf("starting node %v: %v using %v", id, node.Up, self.nodeAdapter.Name()))
+	if err := node.Start(snapshots); err != nil {
+		log.Warn(fmt.Sprintf("start up failed: %v", err))
+		return err
+	}
+	node.Up = true
+	log.Info(fmt.Sprintf("started node %v: %v", id, node.Up))
+
+	self.events.Send(NewEvent(node))
+
+	// subscribe to peer events
+	client, err := node.Client()
+	if err != nil {
+		return fmt.Errorf("error getting rpc client  for node %v: %s", id, err)
+	}
+	events := make(chan *p2p.PeerEvent)
+	sub, err := client.Subscribe(context.Background(), "admin", events, "peerEvents")
+	if err != nil {
+		return fmt.Errorf("error getting peer events for node %v: %s", id, err)
+	}
+	go self.watchPeerEvents(id, events, sub)
+	return nil
+}
+
+// watchPeerEvents reads peer events from the given channel and emits
+// corresponding network events
+func (self *Network) watchPeerEvents(id discover.NodeID, events chan *p2p.PeerEvent, sub event.Subscription) {
+	defer func() {
+		sub.Unsubscribe()
+
+		// assume the node is now down
+		self.lock.Lock()
+		node := self.getNode(id)
+		node.Up = false
+		self.lock.Unlock()
+		self.events.Send(NewEvent(node))
+	}()
+	for {
+		select {
+		case event, ok := <-events:
+			if !ok {
+				return
+			}
+			peer := event.Peer
+			switch event.Type {
+
+			case p2p.PeerEventTypeAdd:
+				self.DidConnect(id, peer)
+
+			case p2p.PeerEventTypeDrop:
+				self.DidDisconnect(id, peer)
+
+			case p2p.PeerEventTypeMsgSend:
+				self.DidSend(id, peer, event.Protocol, *event.MsgCode)
+
+			case p2p.PeerEventTypeMsgRecv:
+				self.DidReceive(peer, id, event.Protocol, *event.MsgCode)
+
+			}
+
+		case err := <-sub.Err():
+			if err != nil {
+				log.Error(fmt.Sprintf("error getting peer events for node %v", id), "err", err)
+			}
+			return
+		}
+	}
+}
+
+// Stop stops the node with the given ID
+func (self *Network) Stop(id discover.NodeID) error {
+	node := self.GetNode(id)
+	if node == nil {
+		return fmt.Errorf("node %v does not exist", id)
+	}
+	if !node.Up {
+		return fmt.Errorf("node %v already down", id)
+	}
+	if err := node.Stop(); err != nil {
+		return err
+	}
+	node.Up = false
+	log.Info(fmt.Sprintf("stop node %v: %v", id, node.Up))
+
+	self.events.Send(ControlEvent(node))
+	return nil
+}
+
+// Connect connects two nodes together by calling the "admin_addPeer" RPC
+// method on the "one" node so that it connects to the "other" node
+func (self *Network) Connect(oneID, otherID discover.NodeID) error {
+	log.Debug(fmt.Sprintf("connecting %s to %s", oneID, otherID))
+	conn, err := self.GetOrCreateConn(oneID, otherID)
+	if err != nil {
+		return err
+	}
+	if conn.Up {
+		return fmt.Errorf("%v and %v already connected", oneID, otherID)
+	}
+	if err := conn.nodesUp(); err != nil {
+		return err
+	}
+	client, err := conn.one.Client()
+	if err != nil {
+		return err
+	}
+	self.events.Send(ControlEvent(conn))
+	return client.Call(nil, "admin_addPeer", string(conn.other.Addr()))
+}
+
+// Disconnect disconnects two nodes by calling the "admin_removePeer" RPC
+// method on the "one" node so that it disconnects from the "other" node
+func (self *Network) Disconnect(oneID, otherID discover.NodeID) error {
+	conn := self.GetConn(oneID, otherID)
+	if conn == nil {
+		return fmt.Errorf("connection between %v and %v does not exist", oneID, otherID)
+	}
+	if !conn.Up {
+		return fmt.Errorf("%v and %v already disconnected", oneID, otherID)
+	}
+	client, err := conn.one.Client()
+	if err != nil {
+		return err
+	}
+	self.events.Send(ControlEvent(conn))
+	return client.Call(nil, "admin_removePeer", string(conn.other.Addr()))
+}
+
+// DidConnect tracks the fact that the "one" node connected to the "other" node
+func (self *Network) DidConnect(one, other discover.NodeID) error {
+	conn, err := self.GetOrCreateConn(one, other)
+	if err != nil {
+		return fmt.Errorf("connection between %v and %v does not exist", one, other)
+	}
+	if conn.Up {
+		return fmt.Errorf("%v and %v already connected", one, other)
+	}
+	conn.Up = true
+	self.events.Send(NewEvent(conn))
+	return nil
+}
+
+// DidDisconnect tracks the fact that the "one" node disconnected from the
+// "other" node
+func (self *Network) DidDisconnect(one, other discover.NodeID) error {
+	conn, err := self.GetOrCreateConn(one, other)
+	if err != nil {
+		return fmt.Errorf("connection between %v and %v does not exist", one, other)
+	}
+	if !conn.Up {
+		return fmt.Errorf("%v and %v already disconnected", one, other)
+	}
+	conn.Up = false
+	self.events.Send(NewEvent(conn))
+	return nil
+}
+
+// DidSend tracks the fact that "sender" sent a message to "receiver"
+func (self *Network) DidSend(sender, receiver discover.NodeID, proto string, code uint64) error {
+	msg := &Msg{
+		One:      sender,
+		Other:    receiver,
+		Protocol: proto,
+		Code:     code,
+		Received: false,
+	}
+	self.events.Send(NewEvent(msg))
+	return nil
+}
+
+// DidReceive tracks the fact that "receiver" received a message from "sender"
+func (self *Network) DidReceive(sender, receiver discover.NodeID, proto string, code uint64) error {
+	msg := &Msg{
+		One:      sender,
+		Other:    receiver,
+		Protocol: proto,
+		Code:     code,
+		Received: true,
+	}
+	self.events.Send(NewEvent(msg))
+	return nil
+}
+
+// GetNode gets the node with the given ID, returning nil if the node does not
+// exist
+func (self *Network) GetNode(id discover.NodeID) *Node {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+	return self.getNode(id)
+}
+
+// GetNode gets the node with the given name, returning nil if the node does
+// not exist
+func (self *Network) GetNodeByName(name string) *Node {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+	return self.getNodeByName(name)
+}
+
+func (self *Network) getNode(id discover.NodeID) *Node {
+	i, found := self.nodeMap[id]
+	if !found {
+		return nil
+	}
+	return self.Nodes[i]
+}
+
+func (self *Network) getNodeByName(name string) *Node {
+	for _, node := range self.Nodes {
+		if node.Config.Name == name {
+			return node
+		}
+	}
+	return nil
+}
+
+// GetNodes returns the existing nodes
+func (self *Network) GetNodes() []*Node {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+	return self.Nodes
+}
+
+// GetConn returns the connection which exists between "one" and "other"
+// regardless of which node initiated the connection
+func (self *Network) GetConn(oneID, otherID discover.NodeID) *Conn {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+	return self.getConn(oneID, otherID)
+}
+
+// GetOrCreateConn is like GetConn but creates the connection if it doesn't
+// already exist
+func (self *Network) GetOrCreateConn(oneID, otherID discover.NodeID) (*Conn, error) {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+	if conn := self.getConn(oneID, otherID); conn != nil {
+		return conn, nil
+	}
+
+	one := self.getNode(oneID)
+	if one == nil {
+		return nil, fmt.Errorf("node %v does not exist", oneID)
+	}
+	other := self.getNode(otherID)
+	if other == nil {
+		return nil, fmt.Errorf("node %v does not exist", otherID)
+	}
+	conn := &Conn{
+		One:   oneID,
+		Other: otherID,
+		one:   one,
+		other: other,
+	}
+	label := ConnLabel(oneID, otherID)
+	self.connMap[label] = len(self.Conns)
+	self.Conns = append(self.Conns, conn)
+	return conn, nil
+}
+
+func (self *Network) getConn(oneID, otherID discover.NodeID) *Conn {
+	label := ConnLabel(oneID, otherID)
+	i, found := self.connMap[label]
+	if !found {
+		return nil
+	}
+	return self.Conns[i]
+}
+
+// Shutdown stops all nodes in the network and closes the quit channel
+func (self *Network) Shutdown() {
+	for _, node := range self.Nodes {
+		log.Debug(fmt.Sprintf("stopping node %s", node.ID().TerminalString()))
+		if err := node.Stop(); err != nil {
+			log.Warn(fmt.Sprintf("error stopping node %s", node.ID().TerminalString()), "err", err)
+		}
+	}
+	close(self.quitc)
+}
+
+// Node is a wrapper around adapters.Node which is used to track the status
+// of a node in the network
+type Node struct {
+	adapters.Node `json:"-"`
+
+	// Config if the config used to created the node
+	Config *adapters.NodeConfig `json:"config"`
+
+	// Up tracks whether or not the node is running
+	Up bool `json:"up"`
+}
+
+// ID returns the ID of the node
+func (self *Node) ID() discover.NodeID {
+	return self.Config.ID
+}
+
+// String returns a log-friendly string
+func (self *Node) String() string {
+	return fmt.Sprintf("Node %v", self.ID().TerminalString())
+}
+
+// NodeInfo returns information about the node
+func (self *Node) NodeInfo() *p2p.NodeInfo {
+	// avoid a panic if the node is not started yet
+	if self.Node == nil {
+		return nil
+	}
+	info := self.Node.NodeInfo()
+	info.Name = self.Config.Name
+	return info
+}
+
+// MarshalJSON implements the json.Marshaler interface so that the encoded
+// JSON includes the NodeInfo
+func (self *Node) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Info   *p2p.NodeInfo        `json:"info,omitempty"`
+		Config *adapters.NodeConfig `json:"config,omitempty"`
+		Up     bool                 `json:"up"`
+	}{
+		Info:   self.NodeInfo(),
+		Config: self.Config,
+		Up:     self.Up,
+	})
+}
+
+// Conn represents a connection between two nodes in the network
+type Conn struct {
+	// One is the node which initiated the connection
+	One discover.NodeID `json:"one"`
+
+	// Other is the node which the connection was made to
+	Other discover.NodeID `json:"other"`
+
+	// Up tracks whether or not the connection is active
+	Up bool `json:"up"`
+
+	one   *Node
+	other *Node
+}
+
+// nodesUp returns whether both nodes are currently up
+func (self *Conn) nodesUp() error {
+	if !self.one.Up {
+		return fmt.Errorf("one %v is not up", self.One)
+	}
+	if !self.other.Up {
+		return fmt.Errorf("other %v is not up", self.Other)
+	}
+	return nil
+}
+
+// String returns a log-friendly string
+func (self *Conn) String() string {
+	return fmt.Sprintf("Conn %v->%v", self.One.TerminalString(), self.Other.TerminalString())
+}
+
+// Msg represents a p2p message sent between two nodes in the network
+type Msg struct {
+	One      discover.NodeID `json:"one"`
+	Other    discover.NodeID `json:"other"`
+	Protocol string          `json:"protocol"`
+	Code     uint64          `json:"code"`
+	Received bool            `json:"received"`
+}
+
+// String returns a log-friendly string
+func (self *Msg) String() string {
+	return fmt.Sprintf("Msg(%d) %v->%v", self.Code, self.One.TerminalString(), self.Other.TerminalString())
+}
+
+// ConnLabel generates a deterministic string which represents a connection
+// between two nodes, used to compare if two connections are between the same
+// nodes
+func ConnLabel(source, target discover.NodeID) string {
+	var first, second discover.NodeID
+	if bytes.Compare(source.Bytes(), target.Bytes()) > 0 {
+		first = target
+		second = source
+	} else {
+		first = source
+		second = target
+	}
+	return fmt.Sprintf("%v-%v", first, second)
+}
+
+// Snapshot represents the state of a network at a single point in time and can
+// be used to restore the state of a network
+type Snapshot struct {
+	Nodes []NodeSnapshot `json:"nodes,omitempty"`
+	Conns []Conn         `json:"conns,omitempty"`
+}
+
+// NodeSnapshot represents the state of a node in the network
+type NodeSnapshot struct {
+	Node Node `json:"node,omitempty"`
+
+	// Snapshots is arbitrary data gathered from calling node.Snapshots()
+	Snapshots map[string][]byte `json:"snapshots,omitempty"`
+}
+
+// Snapshot creates a network snapshot
+func (self *Network) Snapshot() (*Snapshot, error) {
+	self.lock.Lock()
+	defer self.lock.Unlock()
+	snap := &Snapshot{
+		Nodes: make([]NodeSnapshot, len(self.Nodes)),
+		Conns: make([]Conn, len(self.Conns)),
+	}
+	for i, node := range self.Nodes {
+		snap.Nodes[i] = NodeSnapshot{Node: *node}
+		if !node.Up {
+			continue
+		}
+		snapshots, err := node.Snapshots()
+		if err != nil {
+			return nil, err
+		}
+		snap.Nodes[i].Snapshots = snapshots
+	}
+	for i, conn := range self.Conns {
+		snap.Conns[i] = *conn
+	}
+	return snap, nil
+}
+
+// Load loads a network snapshot
+func (self *Network) Load(snap *Snapshot) error {
+	for _, n := range snap.Nodes {
+		if _, err := self.NewNodeWithConfig(n.Node.Config); err != nil {
+			return err
+		}
+		if !n.Node.Up {
+			continue
+		}
+		if err := self.startWithSnapshots(n.Node.Config.ID, n.Snapshots); err != nil {
+			return err
+		}
+	}
+	for _, conn := range snap.Conns {
+		if err := self.Connect(conn.One, conn.Other); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Subscribe reads control events from a channel and executes them
+func (self *Network) Subscribe(events chan *Event) {
+	for {
+		select {
+		case event, ok := <-events:
+			if !ok {
+				return
+			}
+			if event.Control {
+				self.executeControlEvent(event)
+			}
+		case <-self.quitc:
+			return
+		}
+	}
+}
+
+func (self *Network) executeControlEvent(event *Event) {
+	log.Trace("execute control event", "type", event.Type, "event", event)
+	switch event.Type {
+	case EventTypeNode:
+		if err := self.executeNodeEvent(event); err != nil {
+			log.Error("error executing node event", "event", event, "err", err)
+		}
+	case EventTypeConn:
+		if err := self.executeConnEvent(event); err != nil {
+			log.Error("error executing conn event", "event", event, "err", err)
+		}
+	case EventTypeMsg:
+		log.Warn("ignoring control msg event")
+	}
+}
+
+func (self *Network) executeNodeEvent(e *Event) error {
+	if !e.Node.Up {
+		return self.Stop(e.Node.ID())
+	}
+
+	if _, err := self.NewNodeWithConfig(e.Node.Config); err != nil {
+		return err
+	}
+	return self.Start(e.Node.ID())
+}
+
+func (self *Network) executeConnEvent(e *Event) error {
+	if e.Conn.Up {
+		return self.Connect(e.Conn.One, e.Conn.Other)
+	} else {
+		return self.Disconnect(e.Conn.One, e.Conn.Other)
+	}
+}

vendor/github.com/ethereum/go-ethereum/p2p/simulations/simulation.go

@@ -0,0 +1,157 @@
+// Copyright 2017 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 simulations
+
+import (
+	"context"
+	"time"
+
+	"github.com/ethereum/go-ethereum/p2p/discover"
+)
+
+// Simulation provides a framework for running actions in a simulated network
+// and then waiting for expectations to be met
+type Simulation struct {
+	network *Network
+}
+
+// NewSimulation returns a new simulation which runs in the given network
+func NewSimulation(network *Network) *Simulation {
+	return &Simulation{
+		network: network,
+	}
+}
+
+// Run performs a step of the simulation by performing the step's action and
+// then waiting for the step's expectation to be met
+func (s *Simulation) Run(ctx context.Context, step *Step) (result *StepResult) {
+	result = newStepResult()
+
+	result.StartedAt = time.Now()
+	defer func() { result.FinishedAt = time.Now() }()
+
+	// watch network events for the duration of the step
+	stop := s.watchNetwork(result)
+	defer stop()
+
+	// perform the action
+	if err := step.Action(ctx); err != nil {
+		result.Error = err
+		return
+	}
+
+	// wait for all node expectations to either pass, error or timeout
+	nodes := make(map[discover.NodeID]struct{}, len(step.Expect.Nodes))
+	for _, id := range step.Expect.Nodes {
+		nodes[id] = struct{}{}
+	}
+	for len(result.Passes) < len(nodes) {
+		select {
+		case id := <-step.Trigger:
+			// skip if we aren't checking the node
+			if _, ok := nodes[id]; !ok {
+				continue
+			}
+
+			// skip if the node has already passed
+			if _, ok := result.Passes[id]; ok {
+				continue
+			}
+
+			// run the node expectation check
+			pass, err := step.Expect.Check(ctx, id)
+			if err != nil {
+				result.Error = err
+				return
+			}
+			if pass {
+				result.Passes[id] = time.Now()
+			}
+		case <-ctx.Done():
+			result.Error = ctx.Err()
+			return
+		}
+	}
+
+	return
+}
+
+func (s *Simulation) watchNetwork(result *StepResult) func() {
+	stop := make(chan struct{})
+	done := make(chan struct{})
+	events := make(chan *Event)
+	sub := s.network.Events().Subscribe(events)
+	go func() {
+		defer close(done)
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case event := <-events:
+				result.NetworkEvents = append(result.NetworkEvents, event)
+			case <-stop:
+				return
+			}
+		}
+	}()
+	return func() {
+		close(stop)
+		<-done
+	}
+}
+
+type Step struct {
+	// Action is the action to perform for this step
+	Action func(context.Context) error
+
+	// Trigger is a channel which receives node ids and triggers an
+	// expectation check for that node
+	Trigger chan discover.NodeID
+
+	// Expect is the expectation to wait for when performing this step
+	Expect *Expectation
+}
+
+type Expectation struct {
+	// Nodes is a list of nodes to check
+	Nodes []discover.NodeID
+
+	// Check checks whether a given node meets the expectation
+	Check func(context.Context, discover.NodeID) (bool, error)
+}
+
+func newStepResult() *StepResult {
+	return &StepResult{
+		Passes: make(map[discover.NodeID]time.Time),
+	}
+}
+
+type StepResult struct {
+	// Error is the error encountered whilst running the step
+	Error error
+
+	// StartedAt is the time the step started
+	StartedAt time.Time
+
+	// FinishedAt is the time the step finished
+	FinishedAt time.Time
+
+	// Passes are the timestamps of the successful node expectations
+	Passes map[discover.NodeID]time.Time
+
+	// NetworkEvents are the network events which occurred during the step
+	NetworkEvents []*Event
+}

vendor/github.com/ethereum/go-ethereum/params/config.go

@@ -18,7 +18,6 @@ package params
 
 import (
 	"fmt"
-	"math"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -40,7 +39,7 @@ var (
 		EIP150Hash:     common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"),
 		EIP155Block:    big.NewInt(2675000),
 		EIP158Block:    big.NewInt(2675000),
-		ByzantiumBlock: big.NewInt(math.MaxInt64), // Don't enable yet
+		ByzantiumBlock: big.NewInt(4370000),
 
 		Ethash: new(EthashConfig),
 	}
@@ -70,7 +69,7 @@ var (
 		EIP150Hash:     common.HexToHash("0x9b095b36c15eaf13044373aef8ee0bd3a382a5abb92e402afa44b8249c3a90e9"),
 		EIP155Block:    big.NewInt(3),
 		EIP158Block:    big.NewInt(3),
-		ByzantiumBlock: big.NewInt(math.MaxInt64), // Don't enable yet
+		ByzantiumBlock: big.NewInt(1035301),
 
 		Clique: &CliqueConfig{
 			Period: 15,
@@ -100,17 +99,18 @@ type ChainConfig struct {
 	ChainId *big.Int `json:"chainId"` // Chain id identifies the current chain and is used for replay protection
 
 	HomesteadBlock *big.Int `json:"homesteadBlock,omitempty"` // Homestead switch block (nil = no fork, 0 = already homestead)
+
 	DAOForkBlock   *big.Int `json:"daoForkBlock,omitempty"`   // TheDAO hard-fork switch block (nil = no fork)
 	DAOForkSupport bool     `json:"daoForkSupport,omitempty"` // Whether the nodes supports or opposes the DAO hard-fork
 
 	// EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
 	EIP150Block *big.Int    `json:"eip150Block,omitempty"` // EIP150 HF block (nil = no fork)
-	EIP150Hash  common.Hash `json:"eip150Hash,omitempty"`  // EIP150 HF hash (fast sync aid)
+	EIP150Hash  common.Hash `json:"eip150Hash,omitempty"`  // EIP150 HF hash (needed for header only clients as only gas pricing changed)
 
 	EIP155Block *big.Int `json:"eip155Block,omitempty"` // EIP155 HF block
 	EIP158Block *big.Int `json:"eip158Block,omitempty"` // EIP158 HF block
 
-	ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = alraedy on homestead)
+	ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = already on byzantium)
 
 	// Various consensus engines
 	Ethash *EthashConfig `json:"ethash,omitempty"`
@@ -197,7 +197,7 @@ func (c *ChainConfig) GasTable(num *big.Int) GasTable {
 	case c.IsEIP158(num):
 		return GasTableEIP158
 	case c.IsEIP150(num):
-		return GasTableHomesteadGasRepriceFork
+		return GasTableEIP150
 	default:
 		return GasTableHomestead
 	}

vendor/github.com/ethereum/go-ethereum/params/gas_table.go

@@ -49,9 +49,7 @@ var (
 
 	// GasTableHomestead contain the gas re-prices for
 	// the homestead phase.
-	//
-	// TODO rename to GasTableEIP150
-	GasTableHomesteadGasRepriceFork = GasTable{
+	GasTableEIP150 = GasTable{
 		ExtcodeSize: 700,
 		ExtcodeCopy: 700,
 		Balance:     400,

vendor/github.com/ethereum/go-ethereum/params/version.go

@@ -23,7 +23,7 @@ import (
 const (
 	VersionMajor = 1        // Major version component of the current release
 	VersionMinor = 7        // Minor version component of the current release
-	VersionPatch = 0        // Patch version component of the current release
+	VersionPatch = 2        // Patch version component of the current release
 	VersionMeta  = "stable" // Version metadata to append to the version string
 )
 

vendor/github.com/ethereum/go-ethereum/rpc/client.go

@@ -349,85 +349,49 @@ func (c *Client) BatchCallContext(ctx context.Context, b []BatchElem) error {
 	return err
 }
 
-// ShhSubscribe calls the "shh_subscribe" method with the given arguments,
-// registering a subscription. Server notifications for the subscription are
-// sent to the given channel. The element type of the channel must match the
-// expected type of content returned by the subscription.
-//
-// The context argument cancels the RPC request that sets up the subscription but has no
-// effect on the subscription after ShhSubscribe has returned.
-//
-// Slow subscribers will be dropped eventually. Client buffers up to 8000 notifications
-// before considering the subscriber dead. The subscription Err channel will receive
-// ErrSubscriptionQueueOverflow. Use a sufficiently large buffer on the channel or ensure
-// that the channel usually has at least one reader to prevent this issue.
-func (c *Client) ShhSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) {
-	// Check type of channel first.
-	chanVal := reflect.ValueOf(channel)
-	if chanVal.Kind() != reflect.Chan || chanVal.Type().ChanDir()&reflect.SendDir == 0 {
-		panic("first argument to ShhSubscribe must be a writable channel")
-	}
-	if chanVal.IsNil() {
-		panic("channel given to ShhSubscribe must not be nil")
-	}
-	if c.isHTTP {
-		return nil, ErrNotificationsUnsupported
-	}
-
-	msg, err := c.newMessage("shh"+subscribeMethodSuffix, args...)
-	if err != nil {
-		return nil, err
-	}
-	op := &requestOp{
-		ids:  []json.RawMessage{msg.ID},
-		resp: make(chan *jsonrpcMessage),
-		sub:  newClientSubscription(c, "shh", chanVal),
-	}
-
-	// Send the subscription request.
-	// The arrival and validity of the response is signaled on sub.quit.
-	if err := c.send(ctx, op, msg); err != nil {
-		return nil, err
-	}
-	if _, err := op.wait(ctx); err != nil {
-		return nil, err
-	}
-	return op.sub, nil
+// EthSubscribe registers a subscripion under the "eth" namespace.
+func (c *Client) EthSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) {
+	return c.Subscribe(ctx, "eth", channel, args...)
 }
 
-// EthSubscribe calls the "eth_subscribe" method with the given arguments,
+// ShhSubscribe registers a subscripion under the "shh" namespace.
+func (c *Client) ShhSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) {
+	return c.Subscribe(ctx, "shh", channel, args...)
+}
+
+// Subscribe calls the "<namespace>_subscribe" method with the given arguments,
 // registering a subscription. Server notifications for the subscription are
 // sent to the given channel. The element type of the channel must match the
 // expected type of content returned by the subscription.
 //
 // The context argument cancels the RPC request that sets up the subscription but has no
-// effect on the subscription after EthSubscribe has returned.
+// effect on the subscription after Subscribe has returned.
 //
 // Slow subscribers will be dropped eventually. Client buffers up to 8000 notifications
 // before considering the subscriber dead. The subscription Err channel will receive
 // ErrSubscriptionQueueOverflow. Use a sufficiently large buffer on the channel or ensure
 // that the channel usually has at least one reader to prevent this issue.
-func (c *Client) EthSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) {
+func (c *Client) Subscribe(ctx context.Context, namespace string, channel interface{}, args ...interface{}) (*ClientSubscription, error) {
 	// Check type of channel first.
 	chanVal := reflect.ValueOf(channel)
 	if chanVal.Kind() != reflect.Chan || chanVal.Type().ChanDir()&reflect.SendDir == 0 {
-		panic("first argument to EthSubscribe must be a writable channel")
+		panic("first argument to Subscribe must be a writable channel")
 	}
 	if chanVal.IsNil() {
-		panic("channel given to EthSubscribe must not be nil")
+		panic("channel given to Subscribe must not be nil")
 	}
 	if c.isHTTP {
 		return nil, ErrNotificationsUnsupported
 	}
 
-	msg, err := c.newMessage("eth"+subscribeMethodSuffix, args...)
+	msg, err := c.newMessage(namespace+subscribeMethodSuffix, args...)
 	if err != nil {
 		return nil, err
 	}
 	op := &requestOp{
 		ids:  []json.RawMessage{msg.ID},
 		resp: make(chan *jsonrpcMessage),
-		sub:  newClientSubscription(c, "eth", chanVal),
+		sub:  newClientSubscription(c, namespace, chanVal),
 	}
 
 	// Send the subscription request.