Merge branch 'master' into master

.github/CONTRIBUTING.md

@@ -1,16 +1,40 @@
+# Contributing
+
+Thank you for considering to help out with the source code! We welcome 
+contributions from anyone on the internet, and are grateful for even the 
+smallest of fixes!
+
+If you'd like to contribute to go-ethereum, please fork, fix, commit and send a 
+pull request for the maintainers to review and merge into the main code base. If
+you wish to submit more complex changes though, please check up with the core 
+devs first on [our gitter channel](https://gitter.im/ethereum/go-ethereum) to 
+ensure those changes are in line with the general philosophy of the project 
+and/or get some early feedback which can make both your efforts much lighter as
+well as our review and merge procedures quick and simple.
+
+## Coding guidelines
+
+Please make sure your contributions adhere to our coding guidelines:
+
+ * Code must adhere to the official Go 
+[formatting](https://golang.org/doc/effective_go.html#formatting) guidelines 
+(i.e. uses [gofmt](https://golang.org/cmd/gofmt/)).
+ * Code must be documented adhering to the official Go 
+[commentary](https://golang.org/doc/effective_go.html#commentary) guidelines.
+ * Pull requests need to be based on and opened against the `master` branch.
+ * Commit messages should be prefixed with the package(s) they modify.
+   * E.g. "eth, rpc: make trace configs optional"
+
 ## Can I have feature X
 
-Before you do a feature request please check and make sure that it isn't possible
+Before you submit a feature request, please check and make sure that it isn't 
-through some other means. The JavaScript enabled console is a powerful feature
+possible through some other means. The JavaScript-enabled console is a powerful 
-in the right hands. Please check our [Wiki page](https://github.com/ethereum/go-ethereum/wiki) for more info
+feature in the right hands. Please check our 
+[Wiki page](https://github.com/ethereum/go-ethereum/wiki) for more info
 and help.
 
-## Contributing
+## Configuration, dependencies, and tests
 
-If you'd like to contribute to go-ethereum please fork, fix, commit and
+Please see the [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide)
-send a pull request. Commits which do not comply with the coding standards
+for more details on configuring your environment, managing project dependencies
-are ignored (use gofmt!).
+and testing procedures.
-
-See [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide)
-for more details on configuring your environment, testing, and
-dependency management.

.github/no-response.yml

@@ -7,5 +7,5 @@ closeComment: >
   This issue has been automatically closed because there has been no response
   to our request for more information from the original author. With only the
   information that is currently in the issue, we don't have enough information
-  to take action. Please reach out if you have or find the answers we need so
+  to take action. Please reach out if you have more relevant information or
-  that we can investigate further.
+  answers to our questions so that we can investigate further.

.travis.yml

@@ -14,7 +14,6 @@ matrix:
         - go run build/ci.go install
         - go run build/ci.go test -coverage $TEST_PACKAGES
 
-    # These are the latest Go versions.
     - os: linux
       dist: trusty
       sudo: required
@@ -26,8 +25,20 @@ matrix:
       - go run build/ci.go install
       - go run build/ci.go test -coverage $TEST_PACKAGES
 
+    # These are the latest Go versions.
+    - os: linux
+      dist: trusty
+      sudo: required
+      go: 1.11.x
+      script:
+        - sudo modprobe fuse
+        - sudo chmod 666 /dev/fuse
+        - sudo chown root:$USER /etc/fuse.conf
+        - go run build/ci.go install
+        - go run build/ci.go test -coverage $TEST_PACKAGES
+
     - os: osx
-      go: 1.10.x
+      go: 1.11.x
       script:
         - unset -f cd # workaround for https://github.com/travis-ci/travis-ci/issues/8703
         - go run build/ci.go install
@@ -36,7 +47,7 @@ matrix:
     # This builder only tests code linters on latest version of Go
     - os: linux
       dist: trusty
-      go: 1.10.x
+      go: 1.11.x
       env:
         - lint
       git:
@@ -47,7 +58,7 @@ matrix:
     # This builder does the Ubuntu PPA upload
     - os: linux
       dist: trusty
-      go: 1.10.x
+      go: 1.11.x
       env:
         - ubuntu-ppa
       git:
@@ -66,7 +77,7 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.10.x
+      go: 1.11.x
       env:
         - azure-linux
       git:
@@ -100,7 +111,7 @@ matrix:
       dist: trusty
       services:
         - docker
-      go: 1.10.x
+      go: 1.11.x
       env:
         - azure-linux-mips
       git:
@@ -144,7 +155,7 @@ matrix:
       git:
         submodules: false # avoid cloning ethereum/tests
       before_install:
-        - curl https://storage.googleapis.com/golang/go1.10.3.linux-amd64.tar.gz | tar -xz
+        - curl https://storage.googleapis.com/golang/go1.11.linux-amd64.tar.gz | tar -xz
         - export PATH=`pwd`/go/bin:$PATH
         - export GOROOT=`pwd`/go
         - export GOPATH=$HOME/go
@@ -161,7 +172,7 @@ matrix:
 
     # This builder does the OSX Azure, iOS CocoaPods and iOS Azure uploads
     - os: osx
-      go: 1.10.x
+      go: 1.11.x
       env:
         - azure-osx
         - azure-ios
@@ -190,7 +201,7 @@ matrix:
     # This builder does the Azure archive purges to avoid accumulating junk
     - os: linux
       dist: trusty
-      go: 1.10.x
+      go: 1.11.x
       env:
         - azure-purge
       git:

Dockerfile

@@ -1,5 +1,5 @@
 # Build Geth in a stock Go builder container
-FROM golang:1.10-alpine as builder
+FROM golang:1.11-alpine as builder
 
 RUN apk add --no-cache make gcc musl-dev linux-headers
 

Dockerfile.alltools

@@ -1,5 +1,5 @@
 # Build Geth in a stock Go builder container
-FROM golang:1.10-alpine as builder
+FROM golang:1.11-alpine as builder
 
 RUN apk add --no-cache make gcc musl-dev linux-headers
 

README.md

@@ -7,7 +7,7 @@ https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/6874
 )](https://godoc.org/github.com/ethereum/go-ethereum)
 [![Go Report Card](https://goreportcard.com/badge/github.com/ethereum/go-ethereum)](https://goreportcard.com/report/github.com/ethereum/go-ethereum)
 [![Travis](https://travis-ci.org/ethereum/go-ethereum.svg?branch=master)](https://travis-ci.org/ethereum/go-ethereum)
-[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ethereum/go-ethereum?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![Discord](https://img.shields.io/badge/discord-join%20chat-blue.svg)](https://discord.gg/nthXNEv)
 
 Automated builds are available for stable releases and the unstable master branch.
 Binary archives are published at https://geth.ethereum.org/downloads/.

accounts/abi/bind/backends/simulated.go

@@ -69,7 +69,7 @@ func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBac
 	database := ethdb.NewMemDatabase()
 	genesis := core.Genesis{Config: params.AllEthashProtocolChanges, GasLimit: gasLimit, Alloc: alloc}
 	genesis.MustCommit(database)
-	blockchain, _ := core.NewBlockChain(database, nil, genesis.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := core.NewBlockChain(database, nil, genesis.Config, ethash.NewFaker(), vm.Config{}, nil)
 
 	backend := &SimulatedBackend{
 		database:   database,

accounts/abi/type.go

@@ -103,7 +103,12 @@ func NewType(t string) (typ Type, err error) {
 		return typ, err
 	}
 	// parse the type and size of the abi-type.
-	parsedType := typeRegex.FindAllStringSubmatch(t, -1)[0]
+	matches := typeRegex.FindAllStringSubmatch(t, -1)
+	if len(matches) == 0 {
+		return Type{}, fmt.Errorf("invalid type '%v'", t)
+	}
+	parsedType := matches[0]
+
 	// varSize is the size of the variable
 	var varSize int
 	if len(parsedType[3]) > 0 {

accounts/abi/unpack.go

@@ -25,8 +25,17 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 )
 
+var (
+	maxUint256 = big.NewInt(0).Add(
+		big.NewInt(0).Exp(big.NewInt(2), big.NewInt(256), nil),
+		big.NewInt(-1))
+	maxInt256 = big.NewInt(0).Add(
+		big.NewInt(0).Exp(big.NewInt(2), big.NewInt(255), nil),
+		big.NewInt(-1))
+)
+
 // reads the integer based on its kind
-func readInteger(kind reflect.Kind, b []byte) interface{} {
+func readInteger(typ byte, kind reflect.Kind, b []byte) interface{} {
 	switch kind {
 	case reflect.Uint8:
 		return b[len(b)-1]
@@ -45,7 +54,20 @@ func readInteger(kind reflect.Kind, b []byte) interface{} {
 	case reflect.Int64:
 		return int64(binary.BigEndian.Uint64(b[len(b)-8:]))
 	default:
-		return new(big.Int).SetBytes(b)
+		// the only case lefts for integer is int256/uint256.
+		// big.SetBytes can't tell if a number is negative, positive on itself.
+		// On EVM, if the returned number > max int256, it is negative.
+		ret := new(big.Int).SetBytes(b)
+		if typ == UintTy {
+			return ret
+		}
+
+		if ret.Cmp(maxInt256) > 0 {
+			ret.Add(maxUint256, big.NewInt(0).Neg(ret))
+			ret.Add(ret, big.NewInt(1))
+			ret.Neg(ret)
+		}
+		return ret
 	}
 }
 
@@ -179,7 +201,7 @@ func toGoType(index int, t Type, output []byte) (interface{}, error) {
 	case StringTy: // variable arrays are written at the end of the return bytes
 		return string(output[begin : begin+end]), nil
 	case IntTy, UintTy:
-		return readInteger(t.Kind, returnOutput), nil
+		return readInteger(t.T, t.Kind, returnOutput), nil
 	case BoolTy:
 		return readBool(returnOutput)
 	case AddressTy:

accounts/abi/unpack_test.go

@@ -117,6 +117,11 @@ var unpackTests = []unpackTest{
 		enc:  "0000000000000000000000000000000000000000000000000000000000000001",
 		want: big.NewInt(1),
 	},
+	{
+		def:  `[{"type": "int256"}]`,
+		enc:  "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+		want: big.NewInt(-1),
+	},
 	{
 		def:  `[{"type": "address"}]`,
 		enc:  "0000000000000000000000000100000000000000000000000000000000000000",

accounts/keystore/key.go

@@ -179,26 +179,34 @@ func storeNewKey(ks keyStore, rand io.Reader, auth string) (*Key, accounts.Accou
 	return key, a, err
 }
 
-func writeKeyFile(file string, content []byte) error {
+func writeTemporaryKeyFile(file string, content []byte) (string, error) {
 	// Create the keystore directory with appropriate permissions
 	// in case it is not present yet.
 	const dirPerm = 0700
 	if err := os.MkdirAll(filepath.Dir(file), dirPerm); err != nil {
-		return err
+		return "", err
 	}
 	// Atomic write: create a temporary hidden file first
 	// then move it into place. TempFile assigns mode 0600.
 	f, err := ioutil.TempFile(filepath.Dir(file), "."+filepath.Base(file)+".tmp")
 	if err != nil {
-		return err
+		return "", err
 	}
 	if _, err := f.Write(content); err != nil {
 		f.Close()
 		os.Remove(f.Name())
-		return err
+		return "", err
 	}
 	f.Close()
-	return os.Rename(f.Name(), file)
+	return f.Name(), nil
+}
+
+func writeKeyFile(file string, content []byte) error {
+	name, err := writeTemporaryKeyFile(file, content)
+	if err != nil {
+		return err
+	}
+	return os.Rename(name, file)
 }
 
 // keyFileName implements the naming convention for keyfiles:

accounts/keystore/keystore.go

@@ -78,7 +78,7 @@ type unlocked struct {
 // NewKeyStore creates a keystore for the given directory.
 func NewKeyStore(keydir string, scryptN, scryptP int) *KeyStore {
 	keydir, _ = filepath.Abs(keydir)
-	ks := &KeyStore{storage: &keyStorePassphrase{keydir, scryptN, scryptP}}
+	ks := &KeyStore{storage: &keyStorePassphrase{keydir, scryptN, scryptP, false}}
 	ks.init(keydir)
 	return ks
 }

accounts/keystore/keystore_passphrase.go

@@ -35,6 +35,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -72,6 +73,10 @@ type keyStorePassphrase struct {
 	keysDirPath string
 	scryptN     int
 	scryptP     int
+	// skipKeyFileVerification disables the security-feature which does
+	// reads and decrypts any newly created keyfiles. This should be 'false' in all
+	// cases except tests -- setting this to 'true' is not recommended.
+	skipKeyFileVerification bool
 }
 
 func (ks keyStorePassphrase) GetKey(addr common.Address, filename, auth string) (*Key, error) {
@@ -93,7 +98,7 @@ func (ks keyStorePassphrase) GetKey(addr common.Address, filename, auth string)
 
 // StoreKey generates a key, encrypts with 'auth' and stores in the given directory
 func StoreKey(dir, auth string, scryptN, scryptP int) (common.Address, error) {
-	_, a, err := storeNewKey(&keyStorePassphrase{dir, scryptN, scryptP}, rand.Reader, auth)
+	_, a, err := storeNewKey(&keyStorePassphrase{dir, scryptN, scryptP, false}, rand.Reader, auth)
 	return a.Address, err
 }
 
@@ -102,7 +107,25 @@ func (ks keyStorePassphrase) StoreKey(filename string, key *Key, auth string) er
 	if err != nil {
 		return err
 	}
-	return writeKeyFile(filename, keyjson)
+	// Write into temporary file
+	tmpName, err := writeTemporaryKeyFile(filename, keyjson)
+	if err != nil {
+		return err
+	}
+	if !ks.skipKeyFileVerification {
+		// Verify that we can decrypt the file with the given password.
+		_, err = ks.GetKey(key.Address, tmpName, auth)
+		if err != nil {
+			msg := "An error was encountered when saving and verifying the keystore file. \n" +
+				"This indicates that the keystore is corrupted. \n" +
+				"The corrupted file is stored at \n%v\n" +
+				"Please file a ticket at:\n\n" +
+				"https://github.com/ethereum/go-ethereum/issues." +
+				"The error was : %s"
+			return fmt.Errorf(msg, tmpName, err)
+		}
+	}
+	return os.Rename(tmpName, filename)
 }
 
 func (ks keyStorePassphrase) JoinPath(filename string) string {

accounts/keystore/keystore_plain_test.go

@@ -37,7 +37,7 @@ func tmpKeyStoreIface(t *testing.T, encrypted bool) (dir string, ks keyStore) {
 		t.Fatal(err)
 	}
 	if encrypted {
-		ks = &keyStorePassphrase{d, veryLightScryptN, veryLightScryptP}
+		ks = &keyStorePassphrase{d, veryLightScryptN, veryLightScryptP, true}
 	} else {
 		ks = &keyStorePlain{d}
 	}
@@ -191,7 +191,7 @@ func TestV1_1(t *testing.T) {
 
 func TestV1_2(t *testing.T) {
 	t.Parallel()
-	ks := &keyStorePassphrase{"testdata/v1", LightScryptN, LightScryptP}
+	ks := &keyStorePassphrase{"testdata/v1", LightScryptN, LightScryptP, true}
 	addr := common.HexToAddress("cb61d5a9c4896fb9658090b597ef0e7be6f7b67e")
 	file := "testdata/v1/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e"
 	k, err := ks.GetKey(addr, file, "g")

appveyor.yml

@@ -23,8 +23,8 @@ environment:
 install:
   - git submodule update --init
   - rmdir C:\go /s /q
-  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.10.3.windows-%GETH_ARCH%.zip
+  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.11.windows-%GETH_ARCH%.zip
-  - 7z x go1.10.3.windows-%GETH_ARCH%.zip -y -oC:\ > NUL
+  - 7z x go1.11.windows-%GETH_ARCH%.zip -y -oC:\ > NUL
   - go version
   - gcc --version
 

cmd/bootnode/main.go

@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p/discover"
 	"github.com/ethereum/go-ethereum/p2p/discv5"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/nat"
 	"github.com/ethereum/go-ethereum/p2p/netutil"
 )
@@ -85,7 +86,7 @@ func main() {
 	}
 
 	if *writeAddr {
-		fmt.Printf("%v\n", discover.PubkeyID(&nodeKey.PublicKey))
+		fmt.Printf("%v\n", enode.PubkeyToIDV4(&nodeKey.PublicKey))
 		os.Exit(0)
 	}
 

cmd/clef/extapi_changelog.md

@@ -1,6 +1,13 @@
 ### Changelog for external API
 
+#### 4.0.0
 
+* The external `account_Ecrecover`-method was removed. 
+* The external `account_Import`-method was removed.
+
+#### 3.0.0
+
+* The external `account_List`-method was changed to not expose `url`, which contained info about the local filesystem. It now returns only a list of addresses. 
 
 #### 2.0.0
 

cmd/clef/main.go

@@ -48,7 +48,7 @@ import (
 )
 
 // ExternalAPIVersion -- see extapi_changelog.md
-const ExternalAPIVersion = "2.0.0"
+const ExternalAPIVersion = "3.0.0"
 
 // InternalAPIVersion -- see intapi_changelog.md
 const InternalAPIVersion = "2.0.0"
@@ -70,6 +70,10 @@ var (
 		Value: 4,
 		Usage: "log level to emit to the screen",
 	}
+	advancedMode = cli.BoolFlag{
+		Name:  "advanced",
+		Usage: "If enabled, issues warnings instead of rejections for suspicious requests. Default off",
+	}
 	keystoreFlag = cli.StringFlag{
 		Name:  "keystore",
 		Value: filepath.Join(node.DefaultDataDir(), "keystore"),
@@ -191,6 +195,7 @@ func init() {
 		ruleFlag,
 		stdiouiFlag,
 		testFlag,
+		advancedMode,
 	}
 	app.Action = signer
 	app.Commands = []cli.Command{initCommand, attestCommand, addCredentialCommand}
@@ -225,7 +230,7 @@ func initializeSecrets(c *cli.Context) error {
 	if _, err := os.Stat(location); err == nil {
 		return fmt.Errorf("file %v already exists, will not overwrite", location)
 	}
-	err = ioutil.WriteFile(location, masterSeed, 0700)
+	err = ioutil.WriteFile(location, masterSeed, 0400)
 	if err != nil {
 		return err
 	}
@@ -384,7 +389,8 @@ func signer(c *cli.Context) error {
 		c.String(keystoreFlag.Name),
 		c.Bool(utils.NoUSBFlag.Name),
 		ui, db,
-		c.Bool(utils.LightKDFFlag.Name))
+		c.Bool(utils.LightKDFFlag.Name),
+		c.Bool(advancedMode.Name))
 
 	api = apiImpl
 
@@ -540,14 +546,14 @@ func readMasterKey(ctx *cli.Context) ([]byte, error) {
 
 // checkFile is a convenience function to check if a file
 // * exists
-// * is mode 0600
+// * is mode 0400
 func checkFile(filename string) error {
 	info, err := os.Stat(filename)
 	if err != nil {
 		return fmt.Errorf("failed stat on %s: %v", filename, err)
 	}
 	// Check the unix permission bits
-	if info.Mode().Perm()&077 != 0 {
+	if info.Mode().Perm()&0377 != 0 {
 		return fmt.Errorf("file (%v) has insecure file permissions (%v)", filename, info.Mode().String())
 	}
 	return nil

cmd/clef/tutorial.md

@@ -52,7 +52,7 @@ INFO [02-21|12:14:38] Ruleset attestation updated              sha256=6c21d17374
 At this point, we then start the signer with the rule-file:
 
 ```text
-#./signer --rules rules.json
+#./signer --rules rules.js
 
 INFO [02-21|12:15:18] Using CLI as UI-channel
 INFO [02-21|12:15:18] Loaded 4byte db                          signatures=5509 file=./4byte.json
@@ -153,7 +153,7 @@ INFO [02-21|14:36:30] Ruleset attestation updated              sha256=2a0cb661da
 And start the signer:
 
 ```
-#./signer --rules rules.js
+#./signer --rules rules.js --rpc
 
 INFO [02-21|14:41:56] Using CLI as UI-channel
 INFO [02-21|14:41:56] Loaded 4byte db                          signatures=5509 file=./4byte.json
@@ -190,7 +190,7 @@ INFO [02-21|14:42:56] Op rejected
 The signer also stores all traffic over the external API in a log file. The last 4 lines shows the two requests and their responses:
 
 ```text
-#tail audit.log -n 4
+#tail -n 4 audit.log
 t=2018-02-21T14:42:41+0100 lvl=info msg=Sign       api=signer type=request  metadata="{\"remote\":\"127.0.0.1:49706\",\"local\":\"localhost:8550\",\"scheme\":\"HTTP/1.1\"}" addr="0x694267f14675d7e1b9494fd8d72fefe1755710fa [chksum INVALID]" data=202062617a6f6e6b2062617a2067617a0a
 t=2018-02-21T14:42:42+0100 lvl=info msg=Sign       api=signer type=response data=93e6161840c3ae1efc26dc68dedab6e8fc233bb3fefa1b4645dbf6609b93dace160572ea4ab33240256bb6d3dadb60dcd9c515d6374d3cf614ee897408d41d541c error=nil
 t=2018-02-21T14:42:56+0100 lvl=info msg=Sign       api=signer type=request  metadata="{\"remote\":\"127.0.0.1:49708\",\"local\":\"localhost:8550\",\"scheme\":\"HTTP/1.1\"}" addr="0x694267f14675d7e1b9494fd8d72fefe1755710fa [chksum INVALID]" data=2020626f6e6b2062617a2067617a0a

cmd/ethkey/README.md

@@ -21,21 +21,33 @@ Private key information can be printed by using the `--private` flag;
 make sure to use this feature with great caution!
 
 
-### `ethkey sign <keyfile> <message/file>`
+### `ethkey signmessage <keyfile> <message/file>`
 
 Sign the message with a keyfile.
 It is possible to refer to a file containing the message.
+To sign a message contained in a file, use the `--msgfile` flag.
 
 
-### `ethkey verify <address> <signature> <message/file>`
+### `ethkey verifymessage <address> <signature> <message/file>`
 
 Verify the signature of the message.
 It is possible to refer to a file containing the message.
+To sign a message contained in a file, use the --msgfile flag.
+
+
+### `ethkey changepassphrase <keyfile>`
+
+Change the passphrase of a keyfile.
+use the `--newpasswordfile` to point to the new password file.
 
 
 ## Passphrases
 
 For every command that uses a keyfile, you will be prompted to provide the 
 passphrase for decrypting the keyfile.  To avoid this message, it is possible
-to pass the passphrase by using the `--passphrase` flag pointing to a file that
+to pass the passphrase by using the `--passwordfile` flag pointing to a file that
 contains the passphrase.
+
+## JSON
+
+In case you need to output the result in a JSON format, you shall by using the `--json` flag.

cmd/evm/disasm.go

@@ -44,7 +44,7 @@ func disasmCmd(ctx *cli.Context) error {
 		return err
 	}
 
-	code := strings.TrimSpace(string(in[:]))
+	code := strings.TrimSpace(string(in))
 	fmt.Printf("%v\n", code)
 	return asm.PrintDisassembled(code)
 }

cmd/evm/runner.go

@@ -86,7 +86,7 @@ func runCmd(ctx *cli.Context) error {
 		chainConfig   *params.ChainConfig
 		sender        = common.BytesToAddress([]byte("sender"))
 		receiver      = common.BytesToAddress([]byte("receiver"))
-		blockNumber uint64
+		genesisConfig *core.Genesis
 	)
 	if ctx.GlobalBool(MachineFlag.Name) {
 		tracer = NewJSONLogger(logconfig, os.Stdout)
@@ -98,13 +98,14 @@ func runCmd(ctx *cli.Context) error {
 	}
 	if ctx.GlobalString(GenesisFlag.Name) != "" {
 		gen := readGenesis(ctx.GlobalString(GenesisFlag.Name))
+		genesisConfig = gen
 		db := ethdb.NewMemDatabase()
 		genesis := gen.ToBlock(db)
 		statedb, _ = state.New(genesis.Root(), state.NewDatabase(db))
 		chainConfig = gen.Config
-		blockNumber = gen.Number
 	} else {
 		statedb, _ = state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
+		genesisConfig = new(core.Genesis)
 	}
 	if ctx.GlobalString(SenderFlag.Name) != "" {
 		sender = common.HexToAddress(ctx.GlobalString(SenderFlag.Name))
@@ -156,13 +157,19 @@ func runCmd(ctx *cli.Context) error {
 	}
 
 	initialGas := ctx.GlobalUint64(GasFlag.Name)
+	if genesisConfig.GasLimit != 0 {
+		initialGas = genesisConfig.GasLimit
+	}
 	runtimeConfig := runtime.Config{
 		Origin:      sender,
 		State:       statedb,
 		GasLimit:    initialGas,
 		GasPrice:    utils.GlobalBig(ctx, PriceFlag.Name),
 		Value:       utils.GlobalBig(ctx, ValueFlag.Name),
-		BlockNumber: new(big.Int).SetUint64(blockNumber),
+		Difficulty:  genesisConfig.Difficulty,
+		Time:        new(big.Int).SetUint64(genesisConfig.Timestamp),
+		Coinbase:    genesisConfig.Coinbase,
+		BlockNumber: new(big.Int).SetUint64(genesisConfig.Number),
 		EVMConfig: vm.Config{
 			Tracer: tracer,
 			Debug:  ctx.GlobalBool(DebugFlag.Name) || ctx.GlobalBool(MachineFlag.Name),

cmd/faucet/faucet.go

@@ -54,8 +54,8 @@ import (
 	"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/discv5"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/nat"
 	"github.com/ethereum/go-ethereum/params"
 	"golang.org/x/net/websocket"
@@ -157,7 +157,8 @@ func main() {
 	if blob, err = ioutil.ReadFile(*accPassFlag); err != nil {
 		log.Crit("Failed to read account password contents", "file", *accPassFlag, "err", err)
 	}
-	pass := string(blob)
+	// Delete trailing newline in password
+	pass := strings.TrimSuffix(string(blob), "\n")
 
 	ks := keystore.NewKeyStore(filepath.Join(os.Getenv("HOME"), ".faucet", "keys"), keystore.StandardScryptN, keystore.StandardScryptP)
 	if blob, err = ioutil.ReadFile(*accJSONFlag); err != nil {
@@ -198,6 +199,8 @@ type faucet struct {
 
 	keystore *keystore.KeyStore // Keystore containing the single signer
 	account  accounts.Account   // Account funding user faucet requests
+	head     *types.Header      // Current head header of the faucet
+	balance  *big.Int           // Current balance of the faucet
 	nonce    uint64             // Current pending nonce of the faucet
 	price    *big.Int           // Current gas price to issue funds with
 
@@ -252,9 +255,11 @@ func newFaucet(genesis *core.Genesis, port int, enodes []*discv5.Node, network u
 		return nil, err
 	}
 	for _, boot := range enodes {
-		old, _ := discover.ParseNode(boot.String())
+		old, err := enode.ParseV4(boot.String())
+		if err != nil {
 			stack.Server().AddPeer(old)
 		}
+	}
 	// Attach to the client and retrieve and interesting metadatas
 	api, err := stack.Attach()
 	if err != nil {
@@ -323,33 +328,30 @@ func (f *faucet) apiHandler(conn *websocket.Conn) {
 		nonce   uint64
 		err     error
 	)
-	for {
+	for head == nil || balance == nil {
-		// Attempt to retrieve the stats, may error on no faucet connectivity
+		// Retrieve the current stats cached by the faucet
-		ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+		f.lock.RLock()
-		head, err = f.client.HeaderByNumber(ctx, nil)
+		if f.head != nil {
-		if err == nil {
+			head = types.CopyHeader(f.head)
-			balance, err = f.client.BalanceAt(ctx, f.account.Address, head.Number)
-			if err == nil {
-				nonce, err = f.client.NonceAt(ctx, f.account.Address, nil)
 		}
+		if f.balance != nil {
+			balance = new(big.Int).Set(f.balance)
 		}
-		cancel()
+		nonce = f.nonce
+		f.lock.RUnlock()
 
-		// If stats retrieval failed, wait a bit and retry
+		if head == nil || balance == nil {
-		if err != nil {
+			// Report the faucet offline until initial stats are ready
-			if err = sendError(conn, errors.New("Faucet offline: "+err.Error())); err != nil {
+			if err = sendError(conn, errors.New("Faucet offline")); err != nil {
 				log.Warn("Failed to send faucet error to client", "err", err)
 				return
 			}
 			time.Sleep(3 * time.Second)
-			continue
 		}
-		// Initial stats reported successfully, proceed with user interaction
-		break
 	}
 	// Send over the initial stats and the latest header
 	if err = send(conn, map[string]interface{}{
-		"funds":    balance.Div(balance, ether),
+		"funds":    new(big.Int).Div(balance, ether),
 		"funded":   nonce,
 		"peers":    f.stack.Server().PeerCount(),
 		"requests": f.reqs,
@@ -519,6 +521,47 @@ func (f *faucet) apiHandler(conn *websocket.Conn) {
 	}
 }
 
+// refresh attempts to retrieve the latest header from the chain and extract the
+// associated faucet balance and nonce for connectivity caching.
+func (f *faucet) refresh(head *types.Header) error {
+	// Ensure a state update does not run for too long
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// If no header was specified, use the current chain head
+	var err error
+	if head == nil {
+		if head, err = f.client.HeaderByNumber(ctx, nil); err != nil {
+			return err
+		}
+	}
+	// Retrieve the balance, nonce and gas price from the current head
+	var (
+		balance *big.Int
+		nonce   uint64
+		price   *big.Int
+	)
+	if balance, err = f.client.BalanceAt(ctx, f.account.Address, head.Number); err != nil {
+		return err
+	}
+	if nonce, err = f.client.NonceAt(ctx, f.account.Address, head.Number); err != nil {
+		return err
+	}
+	if price, err = f.client.SuggestGasPrice(ctx); err != nil {
+		return err
+	}
+	// Everything succeeded, update the cached stats and eject old requests
+	f.lock.Lock()
+	f.head, f.balance = head, balance
+	f.price, f.nonce = price, nonce
+	for len(f.reqs) > 0 && f.reqs[0].Tx.Nonce() < f.nonce {
+		f.reqs = f.reqs[1:]
+	}
+	f.lock.Unlock()
+
+	return nil
+}
+
 // loop keeps waiting for interesting events and pushes them out to connected
 // websockets.
 func (f *faucet) loop() {
@@ -536,45 +579,27 @@ func (f *faucet) loop() {
 	go func() {
 		for head := range update {
 			// New chain head arrived, query the current stats and stream to clients
-			var (
+			timestamp := time.Unix(head.Time.Int64(), 0)
-				balance *big.Int
+			if time.Since(timestamp) > time.Hour {
-				nonce   uint64
+				log.Warn("Skipping faucet refresh, head too old", "number", head.Number, "hash", head.Hash(), "age", common.PrettyAge(timestamp))
-				price   *big.Int
+				continue
-				err     error
-			)
-			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-			balance, err = f.client.BalanceAt(ctx, f.account.Address, head.Number)
-			if err == nil {
-				nonce, err = f.client.NonceAt(ctx, f.account.Address, nil)
-				if err == nil {
-					price, err = f.client.SuggestGasPrice(ctx)
 			}
-			}
+			if err := f.refresh(head); err != nil {
-			cancel()
-
-			// If querying the data failed, try for the next block
-			if err != nil {
 				log.Warn("Failed to update faucet state", "block", head.Number, "hash", head.Hash(), "err", err)
 				continue
-			} else {
-				log.Info("Updated faucet state", "block", head.Number, "hash", head.Hash(), "balance", balance, "nonce", nonce, "price", price)
 			}
 			// Faucet state retrieved, update locally and send to clients
-			balance = new(big.Int).Div(balance, ether)
-
-			f.lock.Lock()
-			f.price, f.nonce = price, nonce
-			for len(f.reqs) > 0 && f.reqs[0].Tx.Nonce() < f.nonce {
-				f.reqs = f.reqs[1:]
-			}
-			f.lock.Unlock()
-
 			f.lock.RLock()
+			log.Info("Updated faucet state", "number", head.Number, "hash", head.Hash(), "age", common.PrettyAge(timestamp), "balance", f.balance, "nonce", f.nonce, "price", f.price)
+
+			balance := new(big.Int).Div(f.balance, ether)
+			peers := f.stack.Server().PeerCount()
+
 			for _, conn := range f.conns {
 				if err := send(conn, map[string]interface{}{
 					"funds":    balance,
 					"funded":   f.nonce,
-					"peers":    f.stack.Server().PeerCount(),
+					"peers":    peers,
 					"requests": f.reqs,
 				}, time.Second); err != nil {
 					log.Warn("Failed to send stats to client", "err", err)

cmd/geth/chaincmd.go

@@ -340,9 +340,9 @@ func importPreimages(ctx *cli.Context) error {
 
 	start := time.Now()
 	if err := utils.ImportPreimages(diskdb, ctx.Args().First()); err != nil {
-		utils.Fatalf("Export error: %v\n", err)
+		utils.Fatalf("Import error: %v\n", err)
 	}
-	fmt.Printf("Export done in %v\n", time.Since(start))
+	fmt.Printf("Import done in %v\n", time.Since(start))
 	return nil
 }
 

cmd/geth/config.go

@@ -168,6 +168,9 @@ func makeFullNode(ctx *cli.Context) *node.Node {
 		if ctx.GlobalIsSet(utils.WhisperMinPOWFlag.Name) {
 			cfg.Shh.MinimumAcceptedPOW = ctx.Float64(utils.WhisperMinPOWFlag.Name)
 		}
+		if ctx.GlobalIsSet(utils.WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
+			cfg.Shh.RestrictConnectionBetweenLightClients = true
+		}
 		utils.RegisterShhService(stack, &cfg.Shh)
 	}
 

cmd/geth/main.go

@@ -132,6 +132,8 @@ var (
 		utils.NoCompactionFlag,
 		utils.GpoBlocksFlag,
 		utils.GpoPercentileFlag,
+		utils.EWASMInterpreterFlag,
+		utils.EVMInterpreterFlag,
 		configFileFlag,
 	}
 
@@ -153,6 +155,7 @@ var (
 		utils.WhisperEnabledFlag,
 		utils.WhisperMaxMessageSizeFlag,
 		utils.WhisperMinPOWFlag,
+		utils.WhisperRestrictConnectionBetweenLightClientsFlag,
 	}
 
 	metricsFlags = []cli.Flag{

cmd/geth/usage.go

@@ -208,6 +208,8 @@ var AppHelpFlagGroups = []flagGroup{
 		Name: "VIRTUAL MACHINE",
 		Flags: []cli.Flag{
 			utils.VMEnableDebugFlag,
+			utils.EVMInterpreterFlag,
+			utils.EWASMInterpreterFlag,
 		},
 	},
 	{

cmd/p2psim/main.go

@@ -47,7 +47,7 @@ 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/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/simulations"
 	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
 	"github.com/ethereum/go-ethereum/rpc"
@@ -285,7 +285,7 @@ func createNode(ctx *cli.Context) error {
 		if err != nil {
 			return err
 		}
-		config.ID = discover.PubkeyID(&privKey.PublicKey)
+		config.ID = enode.PubkeyToIDV4(&privKey.PublicKey)
 		config.PrivateKey = privKey
 	}
 	if services := ctx.String("services"); services != "" {

cmd/puppeth/wizard_dashboard.go

@@ -92,7 +92,7 @@ func (w *wizard) deployDashboard() {
 				pages = append(pages, page)
 			}
 		}
-		// Promt the user to chose one, enter manually or simply not list this service
+		// Prompt the user to chose one, enter manually or simply not list this service
 		defLabel, defChoice := "don't list", len(pages)+2
 		if len(pages) > 0 {
 			defLabel, defChoice = pages[0], 1

cmd/puppeth/wizard_network.go

@@ -87,7 +87,7 @@ func (w *wizard) makeServer() string {
 	return input
 }
 
-// selectServer lists the user all the currnetly known servers to choose from,
+// selectServer lists the user all the currently known servers to choose from,
 // also granting the option to add a new one.
 func (w *wizard) selectServer() string {
 	// List the available server to the user and wait for a choice
@@ -115,7 +115,7 @@ func (w *wizard) selectServer() string {
 // manageComponents displays a list of network components the user can tear down
 // and an option
 func (w *wizard) manageComponents() {
-	// List all the componens we can tear down, along with an entry to deploy a new one
+	// List all the components we can tear down, along with an entry to deploy a new one
 	fmt.Println()
 
 	var serviceHosts, serviceNames []string

cmd/swarm/access.go

@@ -51,7 +51,7 @@ func accessNewPass(ctx *cli.Context) {
 		password  = getPassPhrase("", 0, makePasswordList(ctx))
 		dryRun    = ctx.Bool(SwarmDryRunFlag.Name)
 	)
-	accessKey, ae, err = api.DoPasswordNew(ctx, password, salt)
+	accessKey, ae, err = api.DoPassword(ctx, password, salt)
 	if err != nil {
 		utils.Fatalf("error getting session key: %v", err)
 	}
@@ -62,7 +62,6 @@ func accessNewPass(ctx *cli.Context) {
 			utils.Fatalf("had an error printing the manifests: %v", err)
 		}
 	} else {
-		utils.Fatalf("uploading manifests")
 		err = uploadManifests(ctx, m, nil)
 		if err != nil {
 			utils.Fatalf("had an error uploading the manifests: %v", err)
@@ -85,7 +84,7 @@ func accessNewPK(ctx *cli.Context) {
 		granteePublicKey = ctx.String(SwarmAccessGrantKeyFlag.Name)
 		dryRun           = ctx.Bool(SwarmDryRunFlag.Name)
 	)
-	sessionKey, ae, err = api.DoPKNew(ctx, privateKey, granteePublicKey, salt)
+	sessionKey, ae, err = api.DoPK(ctx, privateKey, granteePublicKey, salt)
 	if err != nil {
 		utils.Fatalf("error getting session key: %v", err)
 	}
@@ -115,18 +114,33 @@ func accessNewACT(ctx *cli.Context) {
 		accessKey            []byte
 		err                  error
 		ref                  = args[0]
-		grantees    = []string{}
+		pkGrantees           = []string{}
-		actFilename = ctx.String(SwarmAccessGrantKeysFlag.Name)
+		passGrantees         = []string{}
+		pkGranteesFilename   = ctx.String(SwarmAccessGrantKeysFlag.Name)
+		passGranteesFilename = ctx.String(utils.PasswordFileFlag.Name)
 		privateKey           = getPrivKey(ctx)
 		dryRun               = ctx.Bool(SwarmDryRunFlag.Name)
 	)
+	if pkGranteesFilename == "" && passGranteesFilename == "" {
+		utils.Fatalf("you have to provide either a grantee public-keys file or an encryption passwords file (or both)")
+	}
 
-	bytes, err := ioutil.ReadFile(actFilename)
+	if pkGranteesFilename != "" {
+		bytes, err := ioutil.ReadFile(pkGranteesFilename)
 		if err != nil {
 			utils.Fatalf("had an error reading the grantee public key list")
 		}
-	grantees = strings.Split(string(bytes), "\n")
+		pkGrantees = strings.Split(string(bytes), "\n")
-	accessKey, ae, actManifest, err = api.DoACTNew(ctx, privateKey, salt, grantees)
+	}
+
+	if passGranteesFilename != "" {
+		bytes, err := ioutil.ReadFile(passGranteesFilename)
+		if err != nil {
+			utils.Fatalf("could not read password filename: %v", err)
+		}
+		passGrantees = strings.Split(string(bytes), "\n")
+	}
+	accessKey, ae, actManifest, err = api.DoACT(ctx, privateKey, salt, pkGrantees, passGrantees)
 	if err != nil {
 		utils.Fatalf("error generating ACT manifest: %v", err)
 	}

cmd/swarm/access_test.go

@@ -28,18 +28,26 @@ import (
 	gorand "math/rand"
 	"net/http"
 	"os"
-	"path/filepath"
 	"strings"
 	"testing"
 	"time"
 
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/crypto/ecies"
 	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/swarm/api"
 	swarm "github.com/ethereum/go-ethereum/swarm/api/client"
+	"github.com/ethereum/go-ethereum/swarm/testutil"
 )
 
+const (
+	hashRegexp = `[a-f\d]{128}`
+	data       = "notsorandomdata"
+)
+
+var DefaultCurve = crypto.S256()
+
 // TestAccessPassword tests for the correct creation of an ACT manifest protected by a password.
 // The test creates bogus content, uploads it encrypted, then creates the wrapping manifest with the Access entry
 // The parties participating - node (publisher), uploads to second node then disappears. Content which was uploaded
@@ -50,23 +58,8 @@ func TestAccessPassword(t *testing.T) {
 	defer cluster.Shutdown()
 	proxyNode := cluster.Nodes[0]
 
-	// create a tmp file
+	dataFilename := testutil.TempFileWithContent(t, data)
-	tmp, err := ioutil.TempDir("", "swarm-test")
+	defer os.RemoveAll(dataFilename)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(tmp)
-
-	// write data to file
-	data := "notsorandomdata"
-	dataFilename := filepath.Join(tmp, "data.txt")
-
-	err = ioutil.WriteFile(dataFilename, []byte(data), 0666)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	hashRegexp := `[a-f\d]{128}`
 
 	// upload the file with 'swarm up' and expect a hash
 	up := runSwarm(t,
@@ -83,14 +76,14 @@ func TestAccessPassword(t *testing.T) {
 	}
 
 	ref := matches[0]
-
+	tmp, err := ioutil.TempDir("", "swarm-test")
-	password := "smth"
-	passwordFilename := filepath.Join(tmp, "password.txt")
-
-	err = ioutil.WriteFile(passwordFilename, []byte(password), 0666)
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer os.RemoveAll(tmp)
+	password := "smth"
+	passwordFilename := testutil.TempFileWithContent(t, "smth")
+	defer os.RemoveAll(passwordFilename)
 
 	up = runSwarm(t,
 		"access",
@@ -142,7 +135,9 @@ func TestAccessPassword(t *testing.T) {
 	if a.KdfParams == nil {
 		t.Fatal("manifest access kdf params is nil")
 	}
-
+	if a.Publisher != "" {
+		t.Fatal("should be empty")
+	}
 	client := swarm.NewClient(cluster.Nodes[0].URL)
 
 	hash, err := client.UploadManifest(&m, false)
@@ -188,12 +183,8 @@ func TestAccessPassword(t *testing.T) {
 		t.Errorf("expected decrypted data %q, got %q", data, string(d))
 	}
 
-	wrongPasswordFilename := filepath.Join(tmp, "password-wrong.txt")
+	wrongPasswordFilename := testutil.TempFileWithContent(t, "just wr0ng")
-
+	defer os.RemoveAll(wrongPasswordFilename)
-	err = ioutil.WriteFile(wrongPasswordFilename, []byte("just wr0ng"), 0666)
-	if err != nil {
-		t.Fatal(err)
-	}
 
 	//download file with 'swarm down' with wrong password
 	up = runSwarm(t,
@@ -219,25 +210,11 @@ func TestAccessPassword(t *testing.T) {
 // the test will fail if the proxy's given private key is not granted on the ACT.
 func TestAccessPK(t *testing.T) {
 	// Setup Swarm and upload a test file to it
-	cluster := newTestCluster(t, 1)
+	cluster := newTestCluster(t, 2)
 	defer cluster.Shutdown()
 
-	// create a tmp file
+	dataFilename := testutil.TempFileWithContent(t, data)
-	tmp, err := ioutil.TempFile("", "swarm-test")
+	defer os.RemoveAll(dataFilename)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer tmp.Close()
-	defer os.Remove(tmp.Name())
-
-	// write data to file
-	data := "notsorandomdata"
-	_, err = io.WriteString(tmp, data)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	hashRegexp := `[a-f\d]{128}`
 
 	// upload the file with 'swarm up' and expect a hash
 	up := runSwarm(t,
@@ -245,7 +222,7 @@ func TestAccessPK(t *testing.T) {
 		cluster.Nodes[0].URL,
 		"up",
 		"--encrypt",
-		tmp.Name())
+		dataFilename)
 	_, matches := up.ExpectRegexp(hashRegexp)
 	up.ExpectExit()
 
@@ -254,7 +231,6 @@ func TestAccessPK(t *testing.T) {
 	}
 
 	ref := matches[0]
-
 	pk := cluster.Nodes[0].PrivateKey
 	granteePubKey := crypto.CompressPubkey(&pk.PublicKey)
 
@@ -263,22 +239,15 @@ func TestAccessPK(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	passFile, err := ioutil.TempFile("", "swarm-test")
+	passwordFilename := testutil.TempFileWithContent(t, testPassphrase)
-	if err != nil {
+	defer os.RemoveAll(passwordFilename)
-		t.Fatal(err)
+
-	}
-	defer passFile.Close()
-	defer os.Remove(passFile.Name())
-	_, err = io.WriteString(passFile, testPassphrase)
-	if err != nil {
-		t.Fatal(err)
-	}
 	_, publisherAccount := getTestAccount(t, publisherDir)
 	up = runSwarm(t,
 		"--bzzaccount",
 		publisherAccount.Address.String(),
 		"--password",
-		passFile.Name(),
+		passwordFilename,
 		"--datadir",
 		publisherDir,
 		"--bzzapi",
@@ -299,6 +268,20 @@ func TestAccessPK(t *testing.T) {
 		t.Fatalf("stdout not matched")
 	}
 
+	//get the public key from the publisher directory
+	publicKeyFromDataDir := runSwarm(t,
+		"--bzzaccount",
+		publisherAccount.Address.String(),
+		"--password",
+		passwordFilename,
+		"--datadir",
+		publisherDir,
+		"print-keys",
+		"--compressed",
+	)
+	_, publicKeyString := publicKeyFromDataDir.ExpectRegexp(".+")
+	publicKeyFromDataDir.ExpectExit()
+	pkComp := strings.Split(publicKeyString[0], "=")[1]
 	var m api.Manifest
 
 	err = json.Unmarshal([]byte(matches[0]), &m)
@@ -332,7 +315,9 @@ func TestAccessPK(t *testing.T) {
 	if a.KdfParams != nil {
 		t.Fatal("manifest access kdf params should be nil")
 	}
-
+	if a.Publisher != pkComp {
+		t.Fatal("publisher key did not match")
+	}
 	client := swarm.NewClient(cluster.Nodes[0].URL)
 
 	hash, err := client.UploadManifest(&m, false)
@@ -359,36 +344,34 @@ func TestAccessPK(t *testing.T) {
 	}
 }
 
-// TestAccessACT tests the e2e creation, uploading and downloading of an ACT type access control
+// TestAccessACT tests the creation of the ACT manifest end-to-end, without any bogus entries (i.e. default scenario = 3 nodes 1 unauthorized)
-// the test fires up a 3 node cluster, then randomly picks 2 nodes which will be acting as grantees to the data
-// set. the third node should fail decoding the reference as it will not be granted access. the publisher uploads through
-// one of the nodes then disappears.
 func TestAccessACT(t *testing.T) {
+	testAccessACT(t, 0)
+}
+
+// TestAccessACTScale tests the creation of the ACT manifest end-to-end, with 1000 bogus entries (i.e. 1000 EC keys + default scenario = 3 nodes 1 unauthorized = 1003 keys in the ACT manifest)
+func TestAccessACTScale(t *testing.T) {
+	testAccessACT(t, 1000)
+}
+
+// TestAccessACT tests the e2e creation, uploading and downloading of an ACT access control with both EC keys AND password protection
+// the test fires up a 3 node cluster, then randomly picks 2 nodes which will be acting as grantees to the data
+// set and also protects the ACT with a password. the third node should fail decoding the reference as it will not be granted access.
+// the third node then then tries to download using a correct password (and succeeds) then uses a wrong password and fails.
+// the publisher uploads through one of the nodes then disappears.
+func testAccessACT(t *testing.T, bogusEntries int) {
 	// Setup Swarm and upload a test file to it
-	cluster := newTestCluster(t, 3)
+	const clusterSize = 3
+	cluster := newTestCluster(t, clusterSize)
 	defer cluster.Shutdown()
 
 	var uploadThroughNode = cluster.Nodes[0]
 	client := swarm.NewClient(uploadThroughNode.URL)
 
 	r1 := gorand.New(gorand.NewSource(time.Now().UnixNano()))
-	nodeToSkip := r1.Intn(3) // a number between 0 and 2 (node indices in `cluster`)
+	nodeToSkip := r1.Intn(clusterSize) // a number between 0 and 2 (node indices in `cluster`)
-	// create a tmp file
+	dataFilename := testutil.TempFileWithContent(t, data)
-	tmp, err := ioutil.TempFile("", "swarm-test")
+	defer os.RemoveAll(dataFilename)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer tmp.Close()
-	defer os.Remove(tmp.Name())
-
-	// write data to file
-	data := "notsorandomdata"
-	_, err = io.WriteString(tmp, data)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	hashRegexp := `[a-f\d]{128}`
 
 	// upload the file with 'swarm up' and expect a hash
 	up := runSwarm(t,
@@ -396,7 +379,7 @@ func TestAccessACT(t *testing.T) {
 		cluster.Nodes[0].URL,
 		"up",
 		"--encrypt",
-		tmp.Name())
+		dataFilename)
 	_, matches := up.ExpectRegexp(hashRegexp)
 	up.ExpectExit()
 
@@ -415,41 +398,42 @@ func TestAccessACT(t *testing.T) {
 		grantees = append(grantees, hex.EncodeToString(granteePubKey))
 	}
 
-	granteesPubkeyListFile, err := ioutil.TempFile("", "grantees-pubkey-list.csv")
+	if bogusEntries > 0 {
+		bogusGrantees := []string{}
+
+		for i := 0; i < bogusEntries; i++ {
+			prv, err := ecies.GenerateKey(rand.Reader, DefaultCurve, nil)
 			if err != nil {
 				t.Fatal(err)
 			}
-
+			bogusGrantees = append(bogusGrantees, hex.EncodeToString(crypto.CompressPubkey(&prv.ExportECDSA().PublicKey)))
-	_, err = granteesPubkeyListFile.WriteString(strings.Join(grantees, "\n"))
-	if err != nil {
-		t.Fatal(err)
 		}
-
+		r2 := gorand.New(gorand.NewSource(time.Now().UnixNano()))
-	defer granteesPubkeyListFile.Close()
+		for i := 0; i < len(grantees); i++ {
-	defer os.Remove(granteesPubkeyListFile.Name())
+			insertAtIdx := r2.Intn(len(bogusGrantees))
+			bogusGrantees = append(bogusGrantees[:insertAtIdx], append([]string{grantees[i]}, bogusGrantees[insertAtIdx:]...)...)
+		}
+		grantees = bogusGrantees
+	}
+	granteesPubkeyListFile := testutil.TempFileWithContent(t, strings.Join(grantees, "\n"))
+	defer os.RemoveAll(granteesPubkeyListFile)
 
 	publisherDir, err := ioutil.TempDir("", "swarm-account-dir-temp")
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer os.RemoveAll(publisherDir)
 
-	passFile, err := ioutil.TempFile("", "swarm-test")
+	passwordFilename := testutil.TempFileWithContent(t, testPassphrase)
-	if err != nil {
+	defer os.RemoveAll(passwordFilename)
-		t.Fatal(err)
+	actPasswordFilename := testutil.TempFileWithContent(t, "smth")
-	}
+	defer os.RemoveAll(actPasswordFilename)
-	defer passFile.Close()
-	defer os.Remove(passFile.Name())
-	_, err = io.WriteString(passFile, testPassphrase)
-	if err != nil {
-		t.Fatal(err)
-	}
-
 	_, publisherAccount := getTestAccount(t, publisherDir)
 	up = runSwarm(t,
 		"--bzzaccount",
 		publisherAccount.Address.String(),
 		"--password",
-		passFile.Name(),
+		passwordFilename,
 		"--datadir",
 		publisherDir,
 		"--bzzapi",
@@ -458,7 +442,9 @@ func TestAccessACT(t *testing.T) {
 		"new",
 		"act",
 		"--grant-keys",
-		granteesPubkeyListFile.Name(),
+		granteesPubkeyListFile,
+		"--password",
+		actPasswordFilename,
 		ref,
 	)
 
@@ -468,6 +454,22 @@ func TestAccessACT(t *testing.T) {
 	if len(matches) == 0 {
 		t.Fatalf("stdout not matched")
 	}
+
+	//get the public key from the publisher directory
+	publicKeyFromDataDir := runSwarm(t,
+		"--bzzaccount",
+		publisherAccount.Address.String(),
+		"--password",
+		passwordFilename,
+		"--datadir",
+		publisherDir,
+		"print-keys",
+		"--compressed",
+	)
+	_, publicKeyString := publicKeyFromDataDir.ExpectRegexp(".+")
+	publicKeyFromDataDir.ExpectExit()
+	pkComp := strings.Split(publicKeyString[0], "=")[1]
+
 	hash := matches[0]
 	m, _, err := client.DownloadManifest(hash)
 	if err != nil {
@@ -497,10 +499,10 @@ func TestAccessACT(t *testing.T) {
 	if len(a.Salt) < 32 {
 		t.Fatalf(`got salt with length %v, expected not less the 32 bytes`, len(a.Salt))
 	}
-	if a.KdfParams != nil {
-		t.Fatal("manifest access kdf params should be nil")
-	}
 
+	if a.Publisher != pkComp {
+		t.Fatal("publisher key did not match")
+	}
 	httpClient := &http.Client{}
 
 	// all nodes except the skipped node should be able to decrypt the content
@@ -521,6 +523,25 @@ func TestAccessACT(t *testing.T) {
 				t.Fatalf("should be a 401")
 			}
 
+			// try downloading using a password instead, using the unauthorized node
+			passwordUrl := strings.Replace(url, "http://", "http://:smth@", -1)
+			response, err = httpClient.Get(passwordUrl)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if response.StatusCode != http.StatusOK {
+				t.Fatal("should be a 200")
+			}
+
+			// now try with the wrong password, expect 401
+			passwordUrl = strings.Replace(url, "http://", "http://:smthWrong@", -1)
+			response, err = httpClient.Get(passwordUrl)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if response.StatusCode != http.StatusUnauthorized {
+				t.Fatal("should be a 401")
+			}
 			continue
 		}
 

cmd/swarm/hash.go

@@ -39,7 +39,7 @@ func hash(ctx *cli.Context) {
 	defer f.Close()
 
 	stat, _ := f.Stat()
-	fileStore := storage.NewFileStore(storage.NewMapChunkStore(), storage.NewFileStoreParams())
+	fileStore := storage.NewFileStore(&storage.FakeChunkStore{}, storage.NewFileStoreParams())
 	addr, _, err := fileStore.Store(context.TODO(), f, stat.Size(), false)
 	if err != nil {
 		utils.Fatalf("%v\n", err)

cmd/swarm/main.go

@@ -18,6 +18,7 @@ package main
 
 import (
 	"crypto/ecdsa"
+	"encoding/hex"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -37,7 +38,7 @@ import (
 	"github.com/ethereum/go-ethereum/internal/debug"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/node"
-	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/swarm"
 	bzzapi "github.com/ethereum/go-ethereum/swarm/api"
 	swarmmetrics "github.com/ethereum/go-ethereum/swarm/metrics"
@@ -208,6 +209,10 @@ var (
 		Name:  "data",
 		Usage: "Initializes the resource with the given hex-encoded data. Data must be prefixed by 0x",
 	}
+	SwarmCompressedFlag = cli.BoolFlag{
+		Name:  "compressed",
+		Usage: "Prints encryption keys in compressed form",
+	}
 )
 
 //declare a few constant error messages, useful for later error check comparisons in test
@@ -252,6 +257,14 @@ func init() {
 			Usage:              "Print version numbers",
 			Description:        "The output of this command is supposed to be machine-readable",
 		},
+		{
+			Action:             keys,
+			CustomHelpTemplate: helpTemplate,
+			Name:               "print-keys",
+			Flags:              []cli.Flag{SwarmCompressedFlag},
+			Usage:              "Print public key information",
+			Description:        "The output of this command is supposed to be machine-readable",
+		},
 		{
 			Action:             upload,
 			CustomHelpTemplate: helpTemplate,
@@ -306,6 +319,7 @@ func init() {
 							Flags: []cli.Flag{
 								SwarmAccessGrantKeysFlag,
 								SwarmDryRunFlag,
+								utils.PasswordFileFlag,
 							},
 							Name:        "act",
 							Usage:       "encrypts a reference with the node's private key and a given grantee's public key and embeds it into a root manifest",
@@ -580,6 +594,17 @@ func main() {
 	}
 }
 
+func keys(ctx *cli.Context) error {
+	privateKey := getPrivKey(ctx)
+	pub := hex.EncodeToString(crypto.FromECDSAPub(&privateKey.PublicKey))
+	pubCompressed := hex.EncodeToString(crypto.CompressPubkey(&privateKey.PublicKey))
+	if !ctx.Bool(SwarmCompressedFlag.Name) {
+		fmt.Println(fmt.Sprintf("publicKey=%s", pub))
+	}
+	fmt.Println(fmt.Sprintf("publicKeyCompressed=%s", pubCompressed))
+	return nil
+}
+
 func version(ctx *cli.Context) error {
 	fmt.Println(strings.Title(clientIdentifier))
 	fmt.Println("Version:", sv.VersionWithMeta)
@@ -763,10 +788,10 @@ func setSwarmBootstrapNodes(ctx *cli.Context, cfg *node.Config) {
 		return
 	}
 
-	cfg.P2P.BootstrapNodes = []*discover.Node{}
+	cfg.P2P.BootstrapNodes = []*enode.Node{}
 
 	for _, url := range SwarmBootnodes {
-		node, err := discover.ParseNode(url)
+		node, err := enode.ParseV4(url)
 		if err != nil {
 			log.Error("Bootstrap URL invalid", "enode", url, "err", err)
 		}

cmd/swarm/run_test.go

@@ -234,6 +234,7 @@ func existingTestNode(t *testing.T, dir string, bzzaccount string) *testNode {
 	// start the node
 	node.Cmd = runSwarm(t,
 		"--port", p2pPort,
+		"--nat", "extip:127.0.0.1",
 		"--nodiscover",
 		"--datadir", dir,
 		"--ipcpath", conf.IPCPath,
@@ -241,7 +242,7 @@ func existingTestNode(t *testing.T, dir string, bzzaccount string) *testNode {
 		"--bzzaccount", bzzaccount,
 		"--bzznetworkid", "321",
 		"--bzzport", httpPort,
-		"--verbosity", "6",
+		"--verbosity", "3",
 	)
 	node.Cmd.InputLine(testPassphrase)
 	defer func() {
@@ -284,8 +285,8 @@ func existingTestNode(t *testing.T, dir string, bzzaccount string) *testNode {
 	if err := node.Client.Call(&nodeInfo, "admin_nodeInfo"); err != nil {
 		t.Fatal(err)
 	}
-	node.Enode = fmt.Sprintf("enode://%s@127.0.0.1:%s", nodeInfo.ID, p2pPort)
+	node.Enode = nodeInfo.Enode
-
+	node.IpcPath = conf.IPCPath
 	return node
 }
 
@@ -309,6 +310,7 @@ func newTestNode(t *testing.T, dir string) *testNode {
 	// start the node
 	node.Cmd = runSwarm(t,
 		"--port", p2pPort,
+		"--nat", "extip:127.0.0.1",
 		"--nodiscover",
 		"--datadir", dir,
 		"--ipcpath", conf.IPCPath,
@@ -316,7 +318,7 @@ func newTestNode(t *testing.T, dir string) *testNode {
 		"--bzzaccount", account.Address.String(),
 		"--bzznetworkid", "321",
 		"--bzzport", httpPort,
-		"--verbosity", "6",
+		"--verbosity", "3",
 	)
 	node.Cmd.InputLine(testPassphrase)
 	defer func() {
@@ -359,9 +361,8 @@ func newTestNode(t *testing.T, dir string) *testNode {
 	if err := node.Client.Call(&nodeInfo, "admin_nodeInfo"); err != nil {
 		t.Fatal(err)
 	}
-	node.Enode = fmt.Sprintf("enode://%s@127.0.0.1:%s", nodeInfo.ID, p2pPort)
+	node.Enode = nodeInfo.Enode
 	node.IpcPath = conf.IPCPath
-
 	return node
 }
 

cmd/swarm/swarm-smoke/main.go

@@ -48,7 +48,7 @@ func main() {
 		cli.StringFlag{
 			Name:        "cluster-endpoint",
 			Value:       "testing",
-			Usage:       "cluster to point to (open, or testing)",
+			Usage:       "cluster to point to (local, open or testing)",
 			Destination: &cluster,
 		},
 		cli.IntFlag{
@@ -76,8 +76,8 @@ func main() {
 		},
 		cli.IntFlag{
 			Name:        "filesize",
-			Value:       1,
+			Value:       1024,
-			Usage:       "file size for generated random file in MB",
+			Usage:       "file size for generated random file in KB",
 			Destination: &filesize,
 		},
 	}

cmd/swarm/swarm-smoke/upload_and_sync.go

@@ -39,6 +39,11 @@ import (
 func generateEndpoints(scheme string, cluster string, from int, to int) {
 	if cluster == "prod" {
 		cluster = ""
+	} else if cluster == "local" {
+		for port := from; port <= to; port++ {
+			endpoints = append(endpoints, fmt.Sprintf("%s://localhost:%v", scheme, port))
+		}
+		return
 	} else {
 		cluster = cluster + "."
 	}
@@ -53,13 +58,13 @@ func generateEndpoints(scheme string, cluster string, from int, to int) {
 }
 
 func cliUploadAndSync(c *cli.Context) error {
-	defer func(now time.Time) { log.Info("total time", "time", time.Since(now), "size", filesize) }(time.Now())
+	defer func(now time.Time) { log.Info("total time", "time", time.Since(now), "size (kb)", filesize) }(time.Now())
 
 	generateEndpoints(scheme, cluster, from, to)
 
 	log.Info("uploading to " + endpoints[0] + " and syncing")
 
-	f, cleanup := generateRandomFile(filesize * 1000000)
+	f, cleanup := generateRandomFile(filesize * 1000)
 	defer cleanup()
 
 	hash, err := upload(f, endpoints[0])
@@ -76,12 +81,7 @@ func cliUploadAndSync(c *cli.Context) error {
 
 	log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fhash))
 
-	if filesize < 10 {
+	time.Sleep(3 * time.Second)
-		time.Sleep(35 * time.Second)
-	} else {
-		time.Sleep(15 * time.Second)
-		time.Sleep(2 * time.Duration(filesize) * time.Second)
-	}
 
 	wg := sync.WaitGroup{}
 	for _, endpoint := range endpoints {
@@ -109,7 +109,7 @@ func cliUploadAndSync(c *cli.Context) error {
 // fetch is getting the requested `hash` from the `endpoint` and compares it with the `original` file
 func fetch(hash string, endpoint string, original []byte, ruid string) error {
 	log.Trace("sleeping", "ruid", ruid)
-	time.Sleep(5 * time.Second)
+	time.Sleep(3 * time.Second)
 
 	log.Trace("http get request", "ruid", ruid, "api", endpoint, "hash", hash)
 	res, err := http.Get(endpoint + "/bzz:/" + hash + "/")

cmd/utils/flags.go

@@ -51,8 +51,8 @@ import (
 	"github.com/ethereum/go-ethereum/metrics/influxdb"
 	"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/discv5"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/nat"
 	"github.com/ethereum/go-ethereum/p2p/netutil"
 	"github.com/ethereum/go-ethereum/params"
@@ -348,12 +348,12 @@ var (
 	}
 	MinerGasPriceFlag = BigFlag{
 		Name:  "miner.gasprice",
-		Usage: "Minimal gas price for mining a transactions",
+		Usage: "Minimum gas price for mining a transaction",
 		Value: eth.DefaultConfig.MinerGasPrice,
 	}
 	MinerLegacyGasPriceFlag = BigFlag{
 		Name:  "gasprice",
-		Usage: "Minimal gas price for mining a transactions (deprecated, use --miner.gasprice)",
+		Usage: "Minimum gas price for mining a transaction (deprecated, use --miner.gasprice)",
 		Value: eth.DefaultConfig.MinerGasPrice,
 	}
 	MinerEtherbaseFlag = cli.StringFlag{
@@ -572,6 +572,10 @@ var (
 		Usage: "Minimum POW accepted",
 		Value: whisper.DefaultMinimumPoW,
 	}
+	WhisperRestrictConnectionBetweenLightClientsFlag = cli.BoolFlag{
+		Name:  "shh.restrict-light",
+		Usage: "Restrict connection between two whisper light clients",
+	}
 
 	// Metrics flags
 	MetricsEnabledFlag = cli.BoolFlag{
@@ -611,6 +615,17 @@ var (
 		Usage: "InfluxDB `host` tag attached to all measurements",
 		Value: "localhost",
 	}
+
+	EWASMInterpreterFlag = cli.StringFlag{
+		Name:  "vm.ewasm",
+		Usage: "External ewasm configuration (default = built-in interpreter)",
+		Value: "",
+	}
+	EVMInterpreterFlag = cli.StringFlag{
+		Name:  "vm.evm",
+		Usage: "External EVM configuration (default = built-in interpreter)",
+		Value: "",
+	}
 )
 
 // MakeDataDir retrieves the currently requested data directory, terminating
@@ -682,9 +697,9 @@ func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {
 		return // already set, don't apply defaults.
 	}
 
-	cfg.BootstrapNodes = make([]*discover.Node, 0, len(urls))
+	cfg.BootstrapNodes = make([]*enode.Node, 0, len(urls))
 	for _, url := range urls {
-		node, err := discover.ParseNode(url)
+		node, err := enode.ParseV4(url)
 		if err != nil {
 			log.Crit("Bootstrap URL invalid", "enode", url, "err", err)
 		}
@@ -1104,6 +1119,9 @@ func SetShhConfig(ctx *cli.Context, stack *node.Node, cfg *whisper.Config) {
 	if ctx.GlobalIsSet(WhisperMinPOWFlag.Name) {
 		cfg.MinimumAcceptedPOW = ctx.GlobalFloat64(WhisperMinPOWFlag.Name)
 	}
+	if ctx.GlobalIsSet(WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
+		cfg.RestrictConnectionBetweenLightClients = true
+	}
 }
 
 // SetEthConfig applies eth-related command line flags to the config.
@@ -1182,6 +1200,14 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 		cfg.EnablePreimageRecording = ctx.GlobalBool(VMEnableDebugFlag.Name)
 	}
 
+	if ctx.GlobalIsSet(EWASMInterpreterFlag.Name) {
+		cfg.EWASMInterpreter = ctx.GlobalString(EWASMInterpreterFlag.Name)
+	}
+
+	if ctx.GlobalIsSet(EVMInterpreterFlag.Name) {
+		cfg.EVMInterpreter = ctx.GlobalString(EVMInterpreterFlag.Name)
+	}
+
 	// Override any default configs for hard coded networks.
 	switch {
 	case ctx.GlobalBool(TestnetFlag.Name):
@@ -1377,7 +1403,7 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai
 		cache.TrieNodeLimit = ctx.GlobalInt(CacheFlag.Name) * ctx.GlobalInt(CacheGCFlag.Name) / 100
 	}
 	vmcfg := vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}
-	chain, err = core.NewBlockChain(chainDb, cache, config, engine, vmcfg)
+	chain, err = core.NewBlockChain(chainDb, cache, config, engine, vmcfg, nil)
 	if err != nil {
 		Fatalf("Can't create BlockChain: %v", err)
 	}

cmd/wnode/main.go

@@ -41,7 +41,7 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 	"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/enode"
 	"github.com/ethereum/go-ethereum/p2p/nat"
 	"github.com/ethereum/go-ethereum/whisper/mailserver"
 	whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
@@ -175,7 +175,7 @@ func initialize() {
 	log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*argVerbosity), log.StreamHandler(os.Stderr, log.TerminalFormat(false))))
 
 	done = make(chan struct{})
-	var peers []*discover.Node
+	var peers []*enode.Node
 	var err error
 
 	if *generateKey {
@@ -203,7 +203,7 @@ func initialize() {
 		if len(*argEnode) == 0 {
 			argEnode = scanLineA("Please enter the peer's enode: ")
 		}
-		peer := discover.MustParseNode(*argEnode)
+		peer := enode.MustParseV4(*argEnode)
 		peers = append(peers, peer)
 	}
 
@@ -747,11 +747,11 @@ func requestExpiredMessagesLoop() {
 }
 
 func extractIDFromEnode(s string) []byte {
-	n, err := discover.ParseNode(s)
+	n, err := enode.ParseV4(s)
 	if err != nil {
 		utils.Fatalf("Failed to parse enode: %s", err)
 	}
-	return n.ID[:]
+	return n.ID().Bytes()
 }
 
 // obfuscateBloom adds 16 random bits to the bloom

common/bytes.go

@@ -100,7 +100,7 @@ func Hex2BytesFixed(str string, flen int) []byte {
 		return h[len(h)-flen:]
 	}
 	hh := make([]byte, flen)
-	copy(hh[flen-len(h):flen], h[:])
+	copy(hh[flen-len(h):flen], h)
 	return hh
 }
 

common/format.go

@@ -38,3 +38,45 @@ func (d PrettyDuration) String() string {
 	}
 	return label
 }
+
+// PrettyAge is a pretty printed version of a time.Duration value that rounds
+// the values up to a single most significant unit, days/weeks/years included.
+type PrettyAge time.Time
+
+// ageUnits is a list of units the age pretty printing uses.
+var ageUnits = []struct {
+	Size   time.Duration
+	Symbol string
+}{
+	{12 * 30 * 24 * time.Hour, "y"},
+	{30 * 24 * time.Hour, "mo"},
+	{7 * 24 * time.Hour, "w"},
+	{24 * time.Hour, "d"},
+	{time.Hour, "h"},
+	{time.Minute, "m"},
+	{time.Second, "s"},
+}
+
+// String implements the Stringer interface, allowing pretty printing of duration
+// values rounded to the most significant time unit.
+func (t PrettyAge) String() string {
+	// Calculate the time difference and handle the 0 cornercase
+	diff := time.Since(time.Time(t))
+	if diff < time.Second {
+		return "0"
+	}
+	// Accumulate a precision of 3 components before returning
+	result, prec := "", 0
+
+	for _, unit := range ageUnits {
+		if diff > unit.Size {
+			result = fmt.Sprintf("%s%d%s", result, diff/unit.Size, unit.Symbol)
+			diff %= unit.Size
+
+			if prec += 1; prec >= 3 {
+				break
+			}
+		}
+	}
+	return result
+}

common/types.go

@@ -34,7 +34,7 @@ import (
 const (
 	// HashLength is the expected length of the hash
 	HashLength = 32
-	// AddressLength is the expected length of the adddress
+	// AddressLength is the expected length of the address
 	AddressLength = 20
 )
 

consensus/clique/clique.go

@@ -93,27 +93,33 @@ var (
 
 	// errMissingSignature is returned if a block's extra-data section doesn't seem
 	// to contain a 65 byte secp256k1 signature.
-	errMissingSignature = errors.New("extra-data 65 byte suffix signature missing")
+	errMissingSignature = errors.New("extra-data 65 byte signature suffix missing")
 
 	// errExtraSigners is returned if non-checkpoint block contain signer data in
 	// their extra-data fields.
 	errExtraSigners = errors.New("non-checkpoint block contains extra signer list")
 
 	// errInvalidCheckpointSigners is returned if a checkpoint block contains an
-	// invalid list of signers (i.e. non divisible by 20 bytes, or not the correct
+	// invalid list of signers (i.e. non divisible by 20 bytes).
-	// ones).
 	errInvalidCheckpointSigners = errors.New("invalid signer list on checkpoint block")
 
+	// errMismatchingCheckpointSigners is returned if a checkpoint block contains a
+	// list of signers different than the one the local node calculated.
+	errMismatchingCheckpointSigners = errors.New("mismatching signer list on checkpoint block")
+
 	// errInvalidMixDigest is returned if a block's mix digest is non-zero.
 	errInvalidMixDigest = errors.New("non-zero mix digest")
 
 	// errInvalidUncleHash is returned if a block contains an non-empty uncle list.
 	errInvalidUncleHash = errors.New("non empty uncle hash")
 
-	// errInvalidDifficulty is returned if the difficulty of a block is not either
+	// errInvalidDifficulty is returned if the difficulty of a block neither 1 or 2.
-	// of 1 or 2, or if the value does not match the turn of the signer.
 	errInvalidDifficulty = errors.New("invalid difficulty")
 
+	// errWrongDifficulty is returned if the difficulty of a block doesn't match the
+	// turn of the signer.
+	errWrongDifficulty = errors.New("wrong difficulty")
+
 	// ErrInvalidTimestamp is returned if the timestamp of a block is lower than
 	// the previous block's timestamp + the minimum block period.
 	ErrInvalidTimestamp = errors.New("invalid timestamp")
@@ -122,13 +128,12 @@ var (
 	// be modified via out-of-range or non-contiguous headers.
 	errInvalidVotingChain = errors.New("invalid voting chain")
 
-	// errUnauthorized is returned if a header is signed by a non-authorized entity.
+	// errUnauthorizedSigner is returned if a header is signed by a non-authorized entity.
-	errUnauthorized = errors.New("unauthorized")
+	errUnauthorizedSigner = errors.New("unauthorized signer")
 
-	// errWaitTransactions is returned if an empty block is attempted to be sealed
+	// errRecentlySigned is returned if a header is signed by an authorized entity
-	// on an instant chain (0 second period). It's important to refuse these as the
+	// that already signed a header recently, thus is temporarily not allowed to.
-	// block reward is zero, so an empty block just bloats the chain... fast.
+	errRecentlySigned = errors.New("recently signed")
-	errWaitTransactions = errors.New("waiting for transactions")
 )
 
 // SignerFn is a signer callback function to request a hash to be signed by a
@@ -205,6 +210,9 @@ type Clique struct {
 	signer common.Address // Ethereum address of the signing key
 	signFn SignerFn       // Signer function to authorize hashes with
 	lock   sync.RWMutex   // Protects the signer fields
+
+	// The fields below are for testing only
+	fakeDiff bool // Skip difficulty verifications
 }
 
 // New creates a Clique proof-of-authority consensus engine with the initial
@@ -359,7 +367,7 @@ func (c *Clique) verifyCascadingFields(chain consensus.ChainReader, header *type
 		}
 		extraSuffix := len(header.Extra) - extraSeal
 		if !bytes.Equal(header.Extra[extraVanity:extraSuffix], signers) {
-			return errInvalidCheckpointSigners
+			return errMismatchingCheckpointSigners
 		}
 	}
 	// All basic checks passed, verify the seal and return
@@ -388,7 +396,7 @@ func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash commo
 			}
 		}
 		// If we're at an checkpoint block, make a snapshot if it's known
-		if number%c.config.Epoch == 0 {
+		if number == 0 || (number%c.config.Epoch == 0 && chain.GetHeaderByNumber(number-1) == nil) {
 			checkpoint := chain.GetHeaderByNumber(number)
 			if checkpoint != nil {
 				hash := checkpoint.Hash()
@@ -481,23 +489,25 @@ func (c *Clique) verifySeal(chain consensus.ChainReader, header *types.Header, p
 		return err
 	}
 	if _, ok := snap.Signers[signer]; !ok {
-		return errUnauthorized
+		return errUnauthorizedSigner
 	}
 	for seen, recent := range snap.Recents {
 		if recent == signer {
 			// Signer is among recents, only fail if the current block doesn't shift it out
 			if limit := uint64(len(snap.Signers)/2 + 1); seen > number-limit {
-				return errUnauthorized
+				return errRecentlySigned
 			}
 		}
 	}
 	// Ensure that the difficulty corresponds to the turn-ness of the signer
+	if !c.fakeDiff {
 		inturn := snap.inturn(header.Number.Uint64(), signer)
 		if inturn && header.Difficulty.Cmp(diffInTurn) != 0 {
-		return errInvalidDifficulty
+			return errWrongDifficulty
 		}
 		if !inturn && header.Difficulty.Cmp(diffNoTurn) != 0 {
-		return errInvalidDifficulty
+			return errWrongDifficulty
+		}
 	}
 	return nil
 }
@@ -600,7 +610,8 @@ func (c *Clique) Seal(chain consensus.ChainReader, block *types.Block, results c
 	}
 	// For 0-period chains, refuse to seal empty blocks (no reward but would spin sealing)
 	if c.config.Period == 0 && len(block.Transactions()) == 0 {
-		return errWaitTransactions
+		log.Info("Sealing paused, waiting for transactions")
+		return nil
 	}
 	// Don't hold the signer fields for the entire sealing procedure
 	c.lock.RLock()
@@ -613,7 +624,7 @@ func (c *Clique) Seal(chain consensus.ChainReader, block *types.Block, results c
 		return err
 	}
 	if _, authorized := snap.Signers[signer]; !authorized {
-		return errUnauthorized
+		return errUnauthorizedSigner
 	}
 	// If we're amongst the recent signers, wait for the next block
 	for seen, recent := range snap.Recents {

consensus/clique/snapshot.go

@@ -57,12 +57,12 @@ type Snapshot struct {
 	Tally   map[common.Address]Tally    `json:"tally"`   // Current vote tally to avoid recalculating
 }
 
-// signers implements the sort interface to allow sorting a list of addresses
+// signersAscending implements the sort interface to allow sorting a list of addresses
-type signers []common.Address
+type signersAscending []common.Address
 
-func (s signers) Len() int           { return len(s) }
+func (s signersAscending) Len() int           { return len(s) }
-func (s signers) Less(i, j int) bool { return bytes.Compare(s[i][:], s[j][:]) < 0 }
+func (s signersAscending) Less(i, j int) bool { return bytes.Compare(s[i][:], s[j][:]) < 0 }
-func (s signers) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+func (s signersAscending) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
 
 // newSnapshot creates a new snapshot with the specified startup parameters. This
 // method does not initialize the set of recent signers, so only ever use if for
@@ -214,11 +214,11 @@ func (s *Snapshot) apply(headers []*types.Header) (*Snapshot, error) {
 			return nil, err
 		}
 		if _, ok := snap.Signers[signer]; !ok {
-			return nil, errUnauthorized
+			return nil, errUnauthorizedSigner
 		}
 		for _, recent := range snap.Recents {
 			if recent == signer {
-				return nil, errUnauthorized
+				return nil, errRecentlySigned
 			}
 		}
 		snap.Recents[number] = signer
@@ -298,7 +298,7 @@ func (s *Snapshot) signers() []common.Address {
 	for sig := range s.Signers {
 		sigs = append(sigs, sig)
 	}
-	sort.Sort(signers(sigs))
+	sort.Sort(signersAscending(sigs))
 	return sigs
 }
 

consensus/clique/snapshot_test.go

@@ -19,24 +19,18 @@ package clique
 import (
 	"bytes"
 	"crypto/ecdsa"
-	"math/big"
+	"sort"
 	"testing"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
-	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/params"
 )
 
-type testerVote struct {
-	signer string
-	voted  string
-	auth   bool
-}
-
 // testerAccountPool is a pool to maintain currently active tester accounts,
 // mapped from textual names used in the tests below to actual Ethereum private
 // keys capable of signing transactions.
@@ -50,17 +44,26 @@ func newTesterAccountPool() *testerAccountPool {
 	}
 }
 
-func (ap *testerAccountPool) sign(header *types.Header, signer string) {
+// checkpoint creates a Clique checkpoint signer section from the provided list
-	// Ensure we have a persistent key for the signer
+// of authorized signers and embeds it into the provided header.
-	if ap.accounts[signer] == nil {
+func (ap *testerAccountPool) checkpoint(header *types.Header, signers []string) {
-		ap.accounts[signer], _ = crypto.GenerateKey()
+	auths := make([]common.Address, len(signers))
+	for i, signer := range signers {
+		auths[i] = ap.address(signer)
+	}
+	sort.Sort(signersAscending(auths))
+	for i, auth := range auths {
+		copy(header.Extra[extraVanity+i*common.AddressLength:], auth.Bytes())
 	}
-	// Sign the header and embed the signature in extra data
-	sig, _ := crypto.Sign(sigHash(header).Bytes(), ap.accounts[signer])
-	copy(header.Extra[len(header.Extra)-65:], sig)
 }
 
+// address retrieves the Ethereum address of a tester account by label, creating
+// a new account if no previous one exists yet.
 func (ap *testerAccountPool) address(account string) common.Address {
+	// Return the zero account for non-addresses
+	if account == "" {
+		return common.Address{}
+	}
 	// Ensure we have a persistent key for the account
 	if ap.accounts[account] == nil {
 		ap.accounts[account], _ = crypto.GenerateKey()
@@ -69,32 +72,38 @@ func (ap *testerAccountPool) address(account string) common.Address {
 	return crypto.PubkeyToAddress(ap.accounts[account].PublicKey)
 }
 
-// testerChainReader implements consensus.ChainReader to access the genesis
+// sign calculates a Clique digital signature for the given block and embeds it
-// block. All other methods and requests will panic.
+// back into the header.
-type testerChainReader struct {
+func (ap *testerAccountPool) sign(header *types.Header, signer string) {
-	db ethdb.Database
+	// Ensure we have a persistent key for the signer
-}
+	if ap.accounts[signer] == nil {
-
+		ap.accounts[signer], _ = crypto.GenerateKey()
-func (r *testerChainReader) Config() *params.ChainConfig                 { return params.AllCliqueProtocolChanges }
-func (r *testerChainReader) CurrentHeader() *types.Header                { panic("not supported") }
-func (r *testerChainReader) GetHeader(common.Hash, uint64) *types.Header { panic("not supported") }
-func (r *testerChainReader) GetBlock(common.Hash, uint64) *types.Block   { panic("not supported") }
-func (r *testerChainReader) GetHeaderByHash(common.Hash) *types.Header   { panic("not supported") }
-func (r *testerChainReader) GetHeaderByNumber(number uint64) *types.Header {
-	if number == 0 {
-		return rawdb.ReadHeader(r.db, rawdb.ReadCanonicalHash(r.db, 0), 0)
 	}
-	return nil
+	// Sign the header and embed the signature in extra data
+	sig, _ := crypto.Sign(sigHash(header).Bytes(), ap.accounts[signer])
+	copy(header.Extra[len(header.Extra)-extraSeal:], sig)
 }
 
-// Tests that voting is evaluated correctly for various simple and complex scenarios.
+// testerVote represents a single block signed by a parcitular account, where
-func TestVoting(t *testing.T) {
+// the account may or may not have cast a Clique vote.
+type testerVote struct {
+	signer     string
+	voted      string
+	auth       bool
+	checkpoint []string
+	newbatch   bool
+}
+
+// Tests that Clique signer voting is evaluated correctly for various simple and
+// complex scenarios, as well as that a few special corner cases fail correctly.
+func TestClique(t *testing.T) {
 	// Define the various voting scenarios to test
 	tests := []struct {
 		epoch   uint64
 		signers []string
 		votes   []testerVote
 		results []string
+		failure error
 	}{
 		{
 			// Single signer, no votes cast
@@ -322,10 +331,49 @@ func TestVoting(t *testing.T) {
 			votes: []testerVote{
 				{signer: "A", voted: "C", auth: true},
 				{signer: "B"},
-				{signer: "A"}, // Checkpoint block, (don't vote here, it's validated outside of snapshots)
+				{signer: "A", checkpoint: []string{"A", "B"}},
 				{signer: "B", voted: "C", auth: true},
 			},
 			results: []string{"A", "B"},
+		}, {
+			// An unauthorized signer should not be able to sign blocks
+			signers: []string{"A"},
+			votes: []testerVote{
+				{signer: "B"},
+			},
+			failure: errUnauthorizedSigner,
+		}, {
+			// An authorized signer that signed recenty should not be able to sign again
+			signers: []string{"A", "B"},
+			votes: []testerVote{
+				{signer: "A"},
+				{signer: "A"},
+			},
+			failure: errRecentlySigned,
+		}, {
+			// Recent signatures should not reset on checkpoint blocks imported in a batch
+			epoch:   3,
+			signers: []string{"A", "B", "C"},
+			votes: []testerVote{
+				{signer: "A"},
+				{signer: "B"},
+				{signer: "A", checkpoint: []string{"A", "B", "C"}},
+				{signer: "A"},
+			},
+			failure: errRecentlySigned,
+		}, {
+			// Recent signatures should not reset on checkpoint blocks imported in a new
+			// batch (https://github.com/ethereum/go-ethereum/issues/17593). Whilst this
+			// seems overly specific and weird, it was a Rinkeby consensus split.
+			epoch:   3,
+			signers: []string{"A", "B", "C"},
+			votes: []testerVote{
+				{signer: "A"},
+				{signer: "B"},
+				{signer: "A", checkpoint: []string{"A", "B", "C"}},
+				{signer: "A", newbatch: true},
+			},
+			failure: errRecentlySigned,
 		},
 	}
 	// Run through the scenarios and test them
@@ -356,28 +404,78 @@ func TestVoting(t *testing.T) {
 		genesis.Commit(db)
 
 		// Assemble a chain of headers from the cast votes
-		headers := make([]*types.Header, len(tt.votes))
+		config := *params.TestChainConfig
-		for j, vote := range tt.votes {
+		config.Clique = &params.CliqueConfig{
-			headers[j] = &types.Header{
+			Period: 1,
-				Number:   big.NewInt(int64(j) + 1),
+			Epoch:  tt.epoch,
-				Time:     big.NewInt(int64(j) * 15),
-				Coinbase: accounts.address(vote.voted),
-				Extra:    make([]byte, extraVanity+extraSeal),
 		}
+		engine := New(config.Clique, db)
+		engine.fakeDiff = true
+
+		blocks, _ := core.GenerateChain(&config, genesis.ToBlock(db), engine, db, len(tt.votes), func(j int, gen *core.BlockGen) {
+			// Cast the vote contained in this block
+			gen.SetCoinbase(accounts.address(tt.votes[j].voted))
+			if tt.votes[j].auth {
+				var nonce types.BlockNonce
+				copy(nonce[:], nonceAuthVote)
+				gen.SetNonce(nonce)
+			}
+		})
+		// Iterate through the blocks and seal them individually
+		for j, block := range blocks {
+			// Geth the header and prepare it for signing
+			header := block.Header()
 			if j > 0 {
-				headers[j].ParentHash = headers[j-1].Hash()
+				header.ParentHash = blocks[j-1].Hash()
 			}
-			if vote.auth {
+			header.Extra = make([]byte, extraVanity+extraSeal)
-				copy(headers[j].Nonce[:], nonceAuthVote)
+			if auths := tt.votes[j].checkpoint; auths != nil {
+				header.Extra = make([]byte, extraVanity+len(auths)*common.AddressLength+extraSeal)
+				accounts.checkpoint(header, auths)
 			}
-			accounts.sign(headers[j], vote.signer)
+			header.Difficulty = diffInTurn // Ignored, we just need a valid number
+
+			// Generate the signature, embed it into the header and the block
+			accounts.sign(header, tt.votes[j].signer)
+			blocks[j] = block.WithSeal(header)
+		}
+		// Split the blocks up into individual import batches (cornercase testing)
+		batches := [][]*types.Block{nil}
+		for j, block := range blocks {
+			if tt.votes[j].newbatch {
+				batches = append(batches, nil)
+			}
+			batches[len(batches)-1] = append(batches[len(batches)-1], block)
 		}
 		// Pass all the headers through clique and ensure tallying succeeds
-		head := headers[len(headers)-1]
+		chain, err := core.NewBlockChain(db, nil, &config, engine, vm.Config{}, nil)
-
-		snap, err := New(&params.CliqueConfig{Epoch: tt.epoch}, db).snapshot(&testerChainReader{db: db}, head.Number.Uint64(), head.Hash(), headers)
 		if err != nil {
-			t.Errorf("test %d: failed to create voting snapshot: %v", i, err)
+			t.Errorf("test %d: failed to create test chain: %v", i, err)
+			continue
+		}
+		failed := false
+		for j := 0; j < len(batches)-1; j++ {
+			if k, err := chain.InsertChain(batches[j]); err != nil {
+				t.Errorf("test %d: failed to import batch %d, block %d: %v", i, j, k, err)
+				failed = true
+				break
+			}
+		}
+		if failed {
+			continue
+		}
+		if _, err = chain.InsertChain(batches[len(batches)-1]); err != tt.failure {
+			t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure)
+		}
+		if tt.failure != nil {
+			continue
+		}
+		// No failure was produced or requested, generate the final voting snapshot
+		head := blocks[len(blocks)-1]
+
+		snap, err := engine.snapshot(chain, head.NumberU64(), head.Hash(), nil)
+		if err != nil {
+			t.Errorf("test %d: failed to retrieve voting snapshot: %v", i, err)
 			continue
 		}
 		// Verify the final list of signers against the expected ones

consensus/consensus.go

@@ -90,7 +90,7 @@ type Engine interface {
 	// the result into the given channel.
 	//
 	// Note, the method returns immediately and will send the result async. More
-	// than one result may also be returned depending on the consensus algorothm.
+	// than one result may also be returned depending on the consensus algorithm.
 	Seal(chain ChainReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error
 
 	// SealHash returns the hash of a block prior to it being sealed.

consensus/ethash/consensus.go

@@ -40,8 +40,22 @@ import (
 var (
 	FrontierBlockReward       = big.NewInt(5e+18) // Block reward in wei for successfully mining a block
 	ByzantiumBlockReward      = big.NewInt(3e+18) // Block reward in wei for successfully mining a block upward from Byzantium
+	ConstantinopleBlockReward = big.NewInt(2e+18) // Block reward in wei for successfully mining a block upward from Constantinople
 	maxUncles                 = 2                 // Maximum number of uncles allowed in a single block
 	allowedFutureBlockTime    = 15 * time.Second  // Max time from current time allowed for blocks, before they're considered future blocks
+
+	// calcDifficultyConstantinople is the difficulty adjustment algorithm for Constantinople.
+	// It returns the difficulty that a new block should have when created at time given the
+	// parent block's time and difficulty. The calculation uses the Byzantium rules, but with
+	// bomb offset 5M.
+	// Specification EIP-1234: https://eips.ethereum.org/EIPS/eip-1234
+	calcDifficultyConstantinople = makeDifficultyCalculator(big.NewInt(5000000))
+
+	// calcDifficultyByzantium is the difficulty adjustment algorithm. It returns
+	// the difficulty that a new block should have when created at time given the
+	// parent block's time and difficulty. The calculation uses the Byzantium rules.
+	// Specification EIP-649: https://eips.ethereum.org/EIPS/eip-649
+	calcDifficultyByzantium = makeDifficultyCalculator(big.NewInt(3000000))
 )
 
 // Various error messages to mark blocks invalid. These should be private to
@@ -299,6 +313,8 @@ func (ethash *Ethash) CalcDifficulty(chain consensus.ChainReader, time uint64, p
 func CalcDifficulty(config *params.ChainConfig, time uint64, parent *types.Header) *big.Int {
 	next := new(big.Int).Add(parent.Number, big1)
 	switch {
+	case config.IsConstantinople(next):
+		return calcDifficultyConstantinople(time, parent)
 	case config.IsByzantium(next):
 		return calcDifficultyByzantium(time, parent)
 	case config.IsHomestead(next):
@@ -316,13 +332,16 @@ var (
 	big9          = big.NewInt(9)
 	big10         = big.NewInt(10)
 	bigMinus99    = big.NewInt(-99)
-	big2999999    = big.NewInt(2999999)
 )
 
-// calcDifficultyByzantium is the difficulty adjustment algorithm. It returns
+// makeDifficultyCalculator creates a difficultyCalculator with the given bomb-delay.
-// the difficulty that a new block should have when created at time given the
+// the difficulty is calculated with Byzantium rules, which differs from Homestead in
-// parent block's time and difficulty. The calculation uses the Byzantium rules.
+// how uncles affect the calculation
-func calcDifficultyByzantium(time uint64, parent *types.Header) *big.Int {
+func makeDifficultyCalculator(bombDelay *big.Int) func(time uint64, parent *types.Header) *big.Int {
+	// Note, the calculations below looks at the parent number, which is 1 below
+	// the block number. Thus we remove one from the delay given
+	bombDelayFromParent := new(big.Int).Sub(bombDelay, big1)
+	return func(time uint64, parent *types.Header) *big.Int {
 		// https://github.com/ethereum/EIPs/issues/100.
 		// algorithm:
 		// diff = (parent_diff +
@@ -357,12 +376,11 @@ func calcDifficultyByzantium(time uint64, parent *types.Header) *big.Int {
 		if x.Cmp(params.MinimumDifficulty) < 0 {
 			x.Set(params.MinimumDifficulty)
 		}
-	// calculate a fake block number for the ice-age delay:
+		// calculate a fake block number for the ice-age delay
-	// https://github.com/ethereum/EIPs/pull/669
+		// Specification: https://eips.ethereum.org/EIPS/eip-1234
-	// fake_block_number = max(0, block.number - 3_000_000)
 		fakeBlockNumber := new(big.Int)
-	if parent.Number.Cmp(big2999999) >= 0 {
+		if parent.Number.Cmp(bombDelayFromParent) >= 0 {
-		fakeBlockNumber = fakeBlockNumber.Sub(parent.Number, big2999999) // Note, parent is 1 less than the actual block number
+			fakeBlockNumber = fakeBlockNumber.Sub(parent.Number, bombDelayFromParent)
 		}
 		// for the exponential factor
 		periodCount := fakeBlockNumber
@@ -376,6 +394,7 @@ func calcDifficultyByzantium(time uint64, parent *types.Header) *big.Int {
 			x.Add(x, y)
 		}
 		return x
+	}
 }
 
 // calcDifficultyHomestead is the difficulty adjustment algorithm. It returns
@@ -592,6 +611,9 @@ func accumulateRewards(config *params.ChainConfig, state *state.StateDB, header
 	if config.IsByzantium(header.Number) {
 		blockReward = ByzantiumBlockReward
 	}
+	if config.IsConstantinople(header.Number) {
+		blockReward = ConstantinopleBlockReward
+	}
 	// Accumulate the rewards for the miner and any included uncles
 	reward := new(big.Int).Set(blockReward)
 	r := new(big.Int)

consensus/ethash/ethash.go

@@ -485,7 +485,7 @@ func New(config Config, notify []string, noverify bool) *Ethash {
 		caches:       newlru("cache", config.CachesInMem, newCache),
 		datasets:     newlru("dataset", config.DatasetsInMem, newDataset),
 		update:       make(chan struct{}),
-		hashrate:     metrics.NewMeter(),
+		hashrate:     metrics.NewMeterForced(),
 		workCh:       make(chan *sealTask),
 		fetchWorkCh:  make(chan *sealWork),
 		submitWorkCh: make(chan *mineResult),
@@ -505,7 +505,7 @@ func NewTester(notify []string, noverify bool) *Ethash {
 		caches:       newlru("cache", 1, newCache),
 		datasets:     newlru("dataset", 1, newDataset),
 		update:       make(chan struct{}),
-		hashrate:     metrics.NewMeter(),
+		hashrate:     metrics.NewMeterForced(),
 		workCh:       make(chan *sealTask),
 		fetchWorkCh:  make(chan *sealWork),
 		submitWorkCh: make(chan *mineResult),

consensus/ethash/sealer_test.go

@@ -40,6 +40,18 @@ func TestRemoteNotify(t *testing.T) {
 
 	go server.Serve(listener)
 
+	// Wait for server to start listening
+	var tries int
+	for tries = 0; tries < 10; tries++ {
+		conn, _ := net.DialTimeout("tcp", listener.Addr().String(), 1*time.Second)
+		if conn != nil {
+			break
+		}
+	}
+	if tries == 10 {
+		t.Fatal("tcp listener not ready for more than 10 seconds")
+	}
+
 	// Create the custom ethash engine
 	ethash := NewTester([]string{"http://" + listener.Addr().String()}, false)
 	defer ethash.Close()
@@ -61,7 +73,7 @@ func TestRemoteNotify(t *testing.T) {
 		if want := common.BytesToHash(target.Bytes()).Hex(); work[2] != want {
 			t.Errorf("work packet target mismatch: have %s, want %s", work[2], want)
 		}
-	case <-time.After(time.Second):
+	case <-time.After(3 * time.Second):
 		t.Fatalf("notification timed out")
 	}
 }
@@ -108,7 +120,7 @@ func TestRemoteMultiNotify(t *testing.T) {
 	for i := 0; i < cap(sink); i++ {
 		select {
 		case <-sink:
-		case <-time.After(250 * time.Millisecond):
+		case <-time.After(3 * time.Second):
 			t.Fatalf("notification %d timed out", i)
 		}
 	}

core/bench_test.go

@@ -175,7 +175,7 @@ func benchInsertChain(b *testing.B, disk bool, gen func(int, *BlockGen)) {
 
 	// Time the insertion of the new chain.
 	// State and blocks are stored in the same DB.
-	chainman, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	chainman, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer chainman.Stop()
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -287,7 +287,7 @@ func benchReadChain(b *testing.B, full bool, count uint64) {
 		if err != nil {
 			b.Fatalf("error opening database at %v: %v", dir, err)
 		}
-		chain, err := NewBlockChain(db, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{})
+		chain, err := NewBlockChain(db, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{}, nil)
 		if err != nil {
 			b.Fatalf("error creating chain: %v", err)
 		}

core/block_validator_test.go

@@ -42,7 +42,7 @@ func TestHeaderVerification(t *testing.T) {
 		headers[i] = block.Header()
 	}
 	// Run the header checker for blocks one-by-one, checking for both valid and invalid nonces
-	chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{})
+	chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{}, nil)
 	defer chain.Stop()
 
 	for i := 0; i < len(blocks); i++ {
@@ -106,11 +106,11 @@ func testHeaderConcurrentVerification(t *testing.T, threads int) {
 		var results <-chan error
 
 		if valid {
-			chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{})
+			chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{}, nil)
 			_, results = chain.engine.VerifyHeaders(chain, headers, seals)
 			chain.Stop()
 		} else {
-			chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeFailer(uint64(len(headers)-1)), vm.Config{})
+			chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeFailer(uint64(len(headers)-1)), vm.Config{}, nil)
 			_, results = chain.engine.VerifyHeaders(chain, headers, seals)
 			chain.Stop()
 		}
@@ -173,7 +173,7 @@ func testHeaderConcurrentAbortion(t *testing.T, threads int) {
 	defer runtime.GOMAXPROCS(old)
 
 	// Start the verifications and immediately abort
-	chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeDelayer(time.Millisecond), vm.Config{})
+	chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeDelayer(time.Millisecond), vm.Config{}, nil)
 	defer chain.Stop()
 
 	abort, results := chain.engine.VerifyHeaders(chain, headers, seals)

core/blockchain.go

@@ -29,6 +29,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/mclock"
+	"github.com/ethereum/go-ethereum/common/prque"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/state"
@@ -43,7 +44,6 @@ import (
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/trie"
 	"github.com/hashicorp/golang-lru"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 var (
@@ -129,12 +129,13 @@ type BlockChain struct {
 	vmConfig  vm.Config
 
 	badBlocks      *lru.Cache              // Bad block cache
+	shouldPreserve func(*types.Block) bool // Function used to determine whether should preserve the given block.
 }
 
 // NewBlockChain returns a fully initialised block chain using information
 // available in the database. It initialises the default Ethereum Validator and
 // Processor.
-func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config) (*BlockChain, error) {
+func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(block *types.Block) bool) (*BlockChain, error) {
 	if cacheConfig == nil {
 		cacheConfig = &CacheConfig{
 			TrieNodeLimit: 256 * 1024 * 1024,
@@ -151,9 +152,10 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *par
 		chainConfig:    chainConfig,
 		cacheConfig:    cacheConfig,
 		db:             db,
-		triegc:       prque.New(),
+		triegc:         prque.New(nil),
 		stateCache:     state.NewDatabase(db),
 		quit:           make(chan struct{}),
+		shouldPreserve: shouldPreserve,
 		bodyCache:      bodyCache,
 		bodyRLPCache:   bodyRLPCache,
 		blockCache:     blockCache,
@@ -251,9 +253,9 @@ func (bc *BlockChain) loadLastState() error {
 	blockTd := bc.GetTd(currentBlock.Hash(), currentBlock.NumberU64())
 	fastTd := bc.GetTd(currentFastBlock.Hash(), currentFastBlock.NumberU64())
 
-	log.Info("Loaded most recent local header", "number", currentHeader.Number, "hash", currentHeader.Hash(), "td", headerTd)
+	log.Info("Loaded most recent local header", "number", currentHeader.Number, "hash", currentHeader.Hash(), "td", headerTd, "age", common.PrettyAge(time.Unix(currentHeader.Time.Int64(), 0)))
-	log.Info("Loaded most recent local full block", "number", currentBlock.Number(), "hash", currentBlock.Hash(), "td", blockTd)
+	log.Info("Loaded most recent local full block", "number", currentBlock.Number(), "hash", currentBlock.Hash(), "td", blockTd, "age", common.PrettyAge(time.Unix(currentBlock.Time().Int64(), 0)))
-	log.Info("Loaded most recent local fast block", "number", currentFastBlock.Number(), "hash", currentFastBlock.Hash(), "td", fastTd)
+	log.Info("Loaded most recent local fast block", "number", currentFastBlock.Number(), "hash", currentFastBlock.Hash(), "td", fastTd, "age", common.PrettyAge(time.Unix(currentFastBlock.Time().Int64(), 0)))
 
 	return nil
 }
@@ -850,13 +852,16 @@ func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain [
 	}
 	bc.mu.Unlock()
 
-	log.Info("Imported new block receipts",
+	context := []interface{}{
-		"count", stats.processed,
+		"count", stats.processed, "elapsed", common.PrettyDuration(time.Since(start)),
-		"elapsed", common.PrettyDuration(time.Since(start)),
+		"number", head.Number(), "hash", head.Hash(), "age", common.PrettyAge(time.Unix(head.Time().Int64(), 0)),
-		"number", head.Number(),
-		"hash", head.Hash(),
 		"size", common.StorageSize(bytes),
-		"ignored", stats.ignored)
+	}
+	if stats.ignored > 0 {
+		context = append(context, []interface{}{"ignored", stats.ignored}...)
+	}
+	log.Info("Imported new block receipts", context...)
+
 	return 0, nil
 }
 
@@ -915,7 +920,7 @@ func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.
 	} else {
 		// Full but not archive node, do proper garbage collection
 		triedb.Reference(root, common.Hash{}) // metadata reference to keep trie alive
-		bc.triegc.Push(root, -float32(block.NumberU64()))
+		bc.triegc.Push(root, -int64(block.NumberU64()))
 
 		if current := block.NumberU64(); current > triesInMemory {
 			// If we exceeded our memory allowance, flush matured singleton nodes to disk
@@ -964,8 +969,17 @@ func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.
 	reorg := externTd.Cmp(localTd) > 0
 	currentBlock = bc.CurrentBlock()
 	if !reorg && externTd.Cmp(localTd) == 0 {
-		// Split same-difficulty blocks by number, then at random
+		// Split same-difficulty blocks by number, then preferentially select
-		reorg = block.NumberU64() < currentBlock.NumberU64() || (block.NumberU64() == currentBlock.NumberU64() && mrand.Float64() < 0.5)
+		// the block generated by the local miner as the canonical block.
+		if block.NumberU64() < currentBlock.NumberU64() {
+			reorg = true
+		} else if block.NumberU64() == currentBlock.NumberU64() {
+			var currentPreserve, blockPreserve bool
+			if bc.shouldPreserve != nil {
+				currentPreserve, blockPreserve = bc.shouldPreserve(currentBlock), bc.shouldPreserve(block)
+			}
+			reorg = !currentPreserve && (blockPreserve || mrand.Float64() < 0.5)
+		}
 	}
 	if reorg {
 		// Reorganise the chain if the parent is not the head block
@@ -1229,8 +1243,13 @@ func (st *insertStats) report(chain []*types.Block, index int, cache common.Stor
 		context := []interface{}{
 			"blocks", st.processed, "txs", txs, "mgas", float64(st.usedGas) / 1000000,
 			"elapsed", common.PrettyDuration(elapsed), "mgasps", float64(st.usedGas) * 1000 / float64(elapsed),
-			"number", end.Number(), "hash", end.Hash(), "cache", cache,
+			"number", end.Number(), "hash", end.Hash(),
 		}
+		if timestamp := time.Unix(end.Time().Int64(), 0); time.Since(timestamp) > time.Minute {
+			context = append(context, []interface{}{"age", common.PrettyAge(timestamp)}...)
+		}
+		context = append(context, []interface{}{"cache", cache}...)
+
 		if st.queued > 0 {
 			context = append(context, []interface{}{"queued", st.queued}...)
 		}

core/blockchain_test.go

@@ -52,7 +52,7 @@ func newCanonical(engine consensus.Engine, n int, full bool) (ethdb.Database, *B
 	)
 
 	// Initialize a fresh chain with only a genesis block
-	blockchain, _ := NewBlockChain(db, nil, params.AllEthashProtocolChanges, engine, vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, params.AllEthashProtocolChanges, engine, vm.Config{}, nil)
 	// Create and inject the requested chain
 	if n == 0 {
 		return db, blockchain, nil
@@ -523,7 +523,7 @@ func testReorgBadHashes(t *testing.T, full bool) {
 	blockchain.Stop()
 
 	// Create a new BlockChain and check that it rolled back the state.
-	ncm, err := NewBlockChain(blockchain.db, nil, blockchain.chainConfig, ethash.NewFaker(), vm.Config{})
+	ncm, err := NewBlockChain(blockchain.db, nil, blockchain.chainConfig, ethash.NewFaker(), vm.Config{}, nil)
 	if err != nil {
 		t.Fatalf("failed to create new chain manager: %v", err)
 	}
@@ -635,7 +635,7 @@ func TestFastVsFullChains(t *testing.T) {
 	// Import the chain as an archive node for the comparison baseline
 	archiveDb := ethdb.NewMemDatabase()
 	gspec.MustCommit(archiveDb)
-	archive, _ := NewBlockChain(archiveDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	archive, _ := NewBlockChain(archiveDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer archive.Stop()
 
 	if n, err := archive.InsertChain(blocks); err != nil {
@@ -644,7 +644,7 @@ func TestFastVsFullChains(t *testing.T) {
 	// Fast import the chain as a non-archive node to test
 	fastDb := ethdb.NewMemDatabase()
 	gspec.MustCommit(fastDb)
-	fast, _ := NewBlockChain(fastDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	fast, _ := NewBlockChain(fastDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer fast.Stop()
 
 	headers := make([]*types.Header, len(blocks))
@@ -722,7 +722,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
 	archiveDb := ethdb.NewMemDatabase()
 	gspec.MustCommit(archiveDb)
 
-	archive, _ := NewBlockChain(archiveDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	archive, _ := NewBlockChain(archiveDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	if n, err := archive.InsertChain(blocks); err != nil {
 		t.Fatalf("failed to process block %d: %v", n, err)
 	}
@@ -735,7 +735,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
 	// Import the chain as a non-archive node and ensure all pointers are updated
 	fastDb := ethdb.NewMemDatabase()
 	gspec.MustCommit(fastDb)
-	fast, _ := NewBlockChain(fastDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	fast, _ := NewBlockChain(fastDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer fast.Stop()
 
 	headers := make([]*types.Header, len(blocks))
@@ -756,7 +756,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
 	lightDb := ethdb.NewMemDatabase()
 	gspec.MustCommit(lightDb)
 
-	light, _ := NewBlockChain(lightDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	light, _ := NewBlockChain(lightDb, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	if n, err := light.InsertHeaderChain(headers, 1); err != nil {
 		t.Fatalf("failed to insert header %d: %v", n, err)
 	}
@@ -825,7 +825,7 @@ func TestChainTxReorgs(t *testing.T) {
 		}
 	})
 	// Import the chain. This runs all block validation rules.
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	if i, err := blockchain.InsertChain(chain); err != nil {
 		t.Fatalf("failed to insert original chain[%d]: %v", i, err)
 	}
@@ -896,7 +896,7 @@ func TestLogReorgs(t *testing.T) {
 		signer  = types.NewEIP155Signer(gspec.Config.ChainID)
 	)
 
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
 	rmLogsCh := make(chan RemovedLogsEvent)
@@ -943,7 +943,7 @@ func TestReorgSideEvent(t *testing.T) {
 		signer  = types.NewEIP155Signer(gspec.Config.ChainID)
 	)
 
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
 	chain, _ := GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, 3, func(i int, gen *BlockGen) {})
@@ -1072,7 +1072,7 @@ func TestEIP155Transition(t *testing.T) {
 		genesis = gspec.MustCommit(db)
 	)
 
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
 	blocks, _ := GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, 4, func(i int, block *BlockGen) {
@@ -1179,7 +1179,7 @@ func TestEIP161AccountRemoval(t *testing.T) {
 		}
 		genesis = gspec.MustCommit(db)
 	)
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
 	blocks, _ := GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, 3, func(i int, block *BlockGen) {
@@ -1254,7 +1254,7 @@ func TestBlockchainHeaderchainReorgConsistency(t *testing.T) {
 	diskdb := ethdb.NewMemDatabase()
 	new(Genesis).MustCommit(diskdb)
 
-	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{})
+	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 	if err != nil {
 		t.Fatalf("failed to create tester chain: %v", err)
 	}
@@ -1298,7 +1298,7 @@ func TestTrieForkGC(t *testing.T) {
 	diskdb := ethdb.NewMemDatabase()
 	new(Genesis).MustCommit(diskdb)
 
-	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{})
+	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 	if err != nil {
 		t.Fatalf("failed to create tester chain: %v", err)
 	}
@@ -1337,7 +1337,7 @@ func TestLargeReorgTrieGC(t *testing.T) {
 	diskdb := ethdb.NewMemDatabase()
 	new(Genesis).MustCommit(diskdb)
 
-	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{})
+	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 	if err != nil {
 		t.Fatalf("failed to create tester chain: %v", err)
 	}
@@ -1419,7 +1419,7 @@ func benchmarkLargeNumberOfValueToNonexisting(b *testing.B, numTxs, numBlocks in
 		diskdb := ethdb.NewMemDatabase()
 		gspec.MustCommit(diskdb)
 
-		chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{})
+		chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 		if err != nil {
 			b.Fatalf("failed to create tester chain: %v", err)
 		}

core/chain_indexer.go

@@ -445,7 +445,7 @@ func (c *ChainIndexer) AddChildIndexer(indexer *ChainIndexer) {
 func (c *ChainIndexer) loadValidSections() {
 	data, _ := c.indexDb.Get([]byte("count"))
 	if len(data) == 8 {
-		c.storedSections = binary.BigEndian.Uint64(data[:])
+		c.storedSections = binary.BigEndian.Uint64(data)
 	}
 }
 

core/chain_makers.go

@@ -67,6 +67,11 @@ func (b *BlockGen) SetExtra(data []byte) {
 	b.header.Extra = data
 }
 
+// SetNonce sets the nonce field of the generated block.
+func (b *BlockGen) SetNonce(nonce types.BlockNonce) {
+	b.header.Nonce = nonce
+}
+
 // AddTx adds a transaction to the generated block. If no coinbase has
 // been set, the block's coinbase is set to the zero address.
 //
@@ -172,7 +177,7 @@ func GenerateChain(config *params.ChainConfig, parent *types.Block, engine conse
 	genblock := func(i int, parent *types.Block, statedb *state.StateDB) (*types.Block, types.Receipts) {
 		// TODO(karalabe): This is needed for clique, which depends on multiple blocks.
 		// It's nonetheless ugly to spin up a blockchain here. Get rid of this somehow.
-		blockchain, _ := NewBlockChain(db, nil, config, engine, vm.Config{})
+		blockchain, _ := NewBlockChain(db, nil, config, engine, vm.Config{}, nil)
 		defer blockchain.Stop()
 
 		b := &BlockGen{i: i, parent: parent, chain: blocks, chainReader: blockchain, statedb: statedb, config: config, engine: engine}
@@ -190,13 +195,14 @@ func GenerateChain(config *params.ChainConfig, parent *types.Block, engine conse
 		if config.DAOForkSupport && config.DAOForkBlock != nil && config.DAOForkBlock.Cmp(b.header.Number) == 0 {
 			misc.ApplyDAOHardFork(statedb)
 		}
-		// Execute any user modifications to the block and finalize it
+		// Execute any user modifications to the block
 		if gen != nil {
 			gen(i, b)
 		}
-
 		if b.engine != nil {
+			// Finalize and seal the block
 			block, _ := b.engine.Finalize(b.chainReader, b.header, statedb, b.txs, b.uncles, b.receipts)
+
 			// Write state changes to db
 			root, err := statedb.Commit(config.IsEIP158(b.header.Number))
 			if err != nil {

core/chain_makers_test.go

@@ -79,7 +79,7 @@ func ExampleGenerateChain() {
 	})
 
 	// Import the chain. This runs all block validation rules.
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
 	if i, err := blockchain.InsertChain(chain); err != nil {

core/dao_test.go

@@ -45,7 +45,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	proConf.DAOForkBlock = forkBlock
 	proConf.DAOForkSupport = true
 
-	proBc, _ := NewBlockChain(proDb, nil, &proConf, ethash.NewFaker(), vm.Config{})
+	proBc, _ := NewBlockChain(proDb, nil, &proConf, ethash.NewFaker(), vm.Config{}, nil)
 	defer proBc.Stop()
 
 	conDb := ethdb.NewMemDatabase()
@@ -55,7 +55,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	conConf.DAOForkBlock = forkBlock
 	conConf.DAOForkSupport = false
 
-	conBc, _ := NewBlockChain(conDb, nil, &conConf, ethash.NewFaker(), vm.Config{})
+	conBc, _ := NewBlockChain(conDb, nil, &conConf, ethash.NewFaker(), vm.Config{}, nil)
 	defer conBc.Stop()
 
 	if _, err := proBc.InsertChain(prefix); err != nil {
@@ -69,7 +69,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 		// Create a pro-fork block, and try to feed into the no-fork chain
 		db = ethdb.NewMemDatabase()
 		gspec.MustCommit(db)
-		bc, _ := NewBlockChain(db, nil, &conConf, ethash.NewFaker(), vm.Config{})
+		bc, _ := NewBlockChain(db, nil, &conConf, ethash.NewFaker(), vm.Config{}, nil)
 		defer bc.Stop()
 
 		blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
@@ -94,7 +94,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 		// Create a no-fork block, and try to feed into the pro-fork chain
 		db = ethdb.NewMemDatabase()
 		gspec.MustCommit(db)
-		bc, _ = NewBlockChain(db, nil, &proConf, ethash.NewFaker(), vm.Config{})
+		bc, _ = NewBlockChain(db, nil, &proConf, ethash.NewFaker(), vm.Config{}, nil)
 		defer bc.Stop()
 
 		blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
@@ -120,7 +120,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	// Verify that contra-forkers accept pro-fork extra-datas after forking finishes
 	db = ethdb.NewMemDatabase()
 	gspec.MustCommit(db)
-	bc, _ := NewBlockChain(db, nil, &conConf, ethash.NewFaker(), vm.Config{})
+	bc, _ := NewBlockChain(db, nil, &conConf, ethash.NewFaker(), vm.Config{}, nil)
 	defer bc.Stop()
 
 	blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
@@ -140,7 +140,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	// Verify that pro-forkers accept contra-fork extra-datas after forking finishes
 	db = ethdb.NewMemDatabase()
 	gspec.MustCommit(db)
-	bc, _ = NewBlockChain(db, nil, &proConf, ethash.NewFaker(), vm.Config{})
+	bc, _ = NewBlockChain(db, nil, &proConf, ethash.NewFaker(), vm.Config{}, nil)
 	defer bc.Stop()
 
 	blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))

core/genesis_test.go

@@ -120,7 +120,7 @@ func TestSetupGenesis(t *testing.T) {
 				// Advance to block #4, past the homestead transition block of customg.
 				genesis := oldcustomg.MustCommit(db)
 
-				bc, _ := NewBlockChain(db, nil, oldcustomg.Config, ethash.NewFullFaker(), vm.Config{})
+				bc, _ := NewBlockChain(db, nil, oldcustomg.Config, ethash.NewFullFaker(), vm.Config{}, nil)
 				defer bc.Stop()
 
 				blocks, _ := GenerateChain(oldcustomg.Config, genesis, ethash.NewFaker(), db, 4, nil)

core/headerchain.go

@@ -281,8 +281,18 @@ func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, writeHeader WhCa
 	}
 	// Report some public statistics so the user has a clue what's going on
 	last := chain[len(chain)-1]
-	log.Info("Imported new block headers", "count", stats.processed, "elapsed", common.PrettyDuration(time.Since(start)),
+
-		"number", last.Number, "hash", last.Hash(), "ignored", stats.ignored)
+	context := []interface{}{
+		"count", stats.processed, "elapsed", common.PrettyDuration(time.Since(start)),
+		"number", last.Number, "hash", last.Hash(),
+	}
+	if timestamp := time.Unix(last.Time.Int64(), 0); time.Since(timestamp) > time.Minute {
+		context = append(context, []interface{}{"age", common.PrettyAge(timestamp)}...)
+	}
+	if stats.ignored > 0 {
+		context = append(context, []interface{}{"ignored", stats.ignored}...)
+	}
+	log.Info("Imported new block headers", context...)
 
 	return 0, nil
 }

core/state/state_object.go

@@ -77,7 +77,7 @@ type stateObject struct {
 	trie Trie // storage trie, which becomes non-nil on first access
 	code Code // contract bytecode, which gets set when code is loaded
 
-	cachedStorage Storage // Storage entry cache to avoid duplicate reads
+	originStorage Storage // Storage cache of original entries to dedup rewrites
 	dirtyStorage  Storage // Storage entries that need to be flushed to disk
 
 	// Cache flags.
@@ -115,7 +115,7 @@ func newObject(db *StateDB, address common.Address, data Account) *stateObject {
 		address:       address,
 		addrHash:      crypto.Keccak256Hash(address[:]),
 		data:          data,
-		cachedStorage: make(Storage),
+		originStorage: make(Storage),
 		dirtyStorage:  make(Storage),
 	}
 }
@@ -159,13 +159,25 @@ func (c *stateObject) getTrie(db Database) Trie {
 	return c.trie
 }
 
-// GetState returns a value in account storage.
+// GetState retrieves a value from the account storage trie.
 func (self *stateObject) GetState(db Database, key common.Hash) common.Hash {
-	value, exists := self.cachedStorage[key]
+	// If we have a dirty value for this state entry, return it
-	if exists {
+	value, dirty := self.dirtyStorage[key]
+	if dirty {
 		return value
 	}
-	// Load from DB in case it is missing.
+	// Otherwise return the entry's original value
+	return self.GetCommittedState(db, key)
+}
+
+// GetCommittedState retrieves a value from the committed account storage trie.
+func (self *stateObject) GetCommittedState(db Database, key common.Hash) common.Hash {
+	// If we have the original value cached, return that
+	value, cached := self.originStorage[key]
+	if cached {
+		return value
+	}
+	// Otherwise load the value from the database
 	enc, err := self.getTrie(db).TryGet(key[:])
 	if err != nil {
 		self.setError(err)
@@ -178,22 +190,27 @@ func (self *stateObject) GetState(db Database, key common.Hash) common.Hash {
 		}
 		value.SetBytes(content)
 	}
-	self.cachedStorage[key] = value
+	self.originStorage[key] = value
 	return value
 }
 
 // SetState updates a value in account storage.
 func (self *stateObject) SetState(db Database, key, value common.Hash) {
+	// If the new value is the same as old, don't set
+	prev := self.GetState(db, key)
+	if prev == value {
+		return
+	}
+	// New value is different, update and journal the change
 	self.db.journal.append(storageChange{
 		account:  &self.address,
 		key:      key,
-		prevalue: self.GetState(db, key),
+		prevalue: prev,
 	})
 	self.setState(key, value)
 }
 
 func (self *stateObject) setState(key, value common.Hash) {
-	self.cachedStorage[key] = value
 	self.dirtyStorage[key] = value
 }
 
@@ -202,6 +219,13 @@ func (self *stateObject) updateTrie(db Database) Trie {
 	tr := self.getTrie(db)
 	for key, value := range self.dirtyStorage {
 		delete(self.dirtyStorage, key)
+
+		// Skip noop changes, persist actual changes
+		if value == self.originStorage[key] {
+			continue
+		}
+		self.originStorage[key] = value
+
 		if (value == common.Hash{}) {
 			self.setError(tr.TryDelete(key[:]))
 			continue
@@ -279,7 +303,7 @@ func (self *stateObject) deepCopy(db *StateDB) *stateObject {
 	}
 	stateObject.code = self.code
 	stateObject.dirtyStorage = self.dirtyStorage.Copy()
-	stateObject.cachedStorage = self.dirtyStorage.Copy()
+	stateObject.originStorage = self.originStorage.Copy()
 	stateObject.suicided = self.suicided
 	stateObject.dirtyCode = self.dirtyCode
 	stateObject.deleted = self.deleted

core/state/state_test.go

@@ -96,11 +96,15 @@ func (s *StateSuite) TestNull(c *checker.C) {
 	s.state.CreateAccount(address)
 	//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
 	var value common.Hash
+
 	s.state.SetState(address, common.Hash{}, value)
 	s.state.Commit(false)
-	value = s.state.GetState(address, common.Hash{})
+
-	if value != (common.Hash{}) {
+	if value := s.state.GetState(address, common.Hash{}); value != (common.Hash{}) {
-		c.Errorf("expected empty hash. got %x", value)
+		c.Errorf("expected empty current value, got %x", value)
+	}
+	if value := s.state.GetCommittedState(address, common.Hash{}); value != (common.Hash{}) {
+		c.Errorf("expected empty committed value, got %x", value)
 	}
 }
 
@@ -110,20 +114,24 @@ func (s *StateSuite) TestSnapshot(c *checker.C) {
 	data1 := common.BytesToHash([]byte{42})
 	data2 := common.BytesToHash([]byte{43})
 
+	// snapshot the genesis state
+	genesis := s.state.Snapshot()
+
 	// set initial state object value
 	s.state.SetState(stateobjaddr, storageaddr, data1)
-	// get snapshot of current state
 	snapshot := s.state.Snapshot()
 
-	// set new state object value
+	// set a new state object value, revert it and ensure correct content
 	s.state.SetState(stateobjaddr, storageaddr, data2)
-	// restore snapshot
 	s.state.RevertToSnapshot(snapshot)
 
-	// get state storage value
+	c.Assert(s.state.GetState(stateobjaddr, storageaddr), checker.DeepEquals, data1)
-	res := s.state.GetState(stateobjaddr, storageaddr)
+	c.Assert(s.state.GetCommittedState(stateobjaddr, storageaddr), checker.DeepEquals, common.Hash{})
 
-	c.Assert(data1, checker.DeepEquals, res)
+	// revert up to the genesis state and ensure correct content
+	s.state.RevertToSnapshot(genesis)
+	c.Assert(s.state.GetState(stateobjaddr, storageaddr), checker.DeepEquals, common.Hash{})
+	c.Assert(s.state.GetCommittedState(stateobjaddr, storageaddr), checker.DeepEquals, common.Hash{})
 }
 
 func (s *StateSuite) TestSnapshotEmpty(c *checker.C) {
@@ -208,24 +216,30 @@ func compareStateObjects(so0, so1 *stateObject, t *testing.T) {
 		t.Fatalf("Code mismatch: have %v, want %v", so0.code, so1.code)
 	}
 
-	if len(so1.cachedStorage) != len(so0.cachedStorage) {
+	if len(so1.dirtyStorage) != len(so0.dirtyStorage) {
-		t.Errorf("Storage size mismatch: have %d, want %d", len(so1.cachedStorage), len(so0.cachedStorage))
+		t.Errorf("Dirty storage size mismatch: have %d, want %d", len(so1.dirtyStorage), len(so0.dirtyStorage))
 	}
-	for k, v := range so1.cachedStorage {
+	for k, v := range so1.dirtyStorage {
-		if so0.cachedStorage[k] != v {
+		if so0.dirtyStorage[k] != v {
-			t.Errorf("Storage key %x mismatch: have %v, want %v", k, so0.cachedStorage[k], v)
+			t.Errorf("Dirty storage key %x mismatch: have %v, want %v", k, so0.dirtyStorage[k], v)
 		}
 	}
-	for k, v := range so0.cachedStorage {
+	for k, v := range so0.dirtyStorage {
-		if so1.cachedStorage[k] != v {
+		if so1.dirtyStorage[k] != v {
-			t.Errorf("Storage key %x mismatch: have %v, want none.", k, v)
+			t.Errorf("Dirty storage key %x mismatch: have %v, want none.", k, v)
 		}
 	}
-
+	if len(so1.originStorage) != len(so0.originStorage) {
-	if so0.suicided != so1.suicided {
+		t.Errorf("Origin storage size mismatch: have %d, want %d", len(so1.originStorage), len(so0.originStorage))
-		t.Fatalf("suicided mismatch: have %v, want %v", so0.suicided, so1.suicided)
+	}
+	for k, v := range so1.originStorage {
+		if so0.originStorage[k] != v {
+			t.Errorf("Origin storage key %x mismatch: have %v, want %v", k, so0.originStorage[k], v)
+		}
+	}
+	for k, v := range so0.originStorage {
+		if so1.originStorage[k] != v {
+			t.Errorf("Origin storage key %x mismatch: have %v, want none.", k, v)
 		}
-	if so0.deleted != so1.deleted {
-		t.Fatalf("Deleted mismatch: have %v, want %v", so0.deleted, so1.deleted)
 	}
 }

core/state/statedb.go

@@ -169,11 +169,22 @@ func (self *StateDB) Preimages() map[common.Hash][]byte {
 	return self.preimages
 }
 
+// AddRefund adds gas to the refund counter
 func (self *StateDB) AddRefund(gas uint64) {
 	self.journal.append(refundChange{prev: self.refund})
 	self.refund += gas
 }
 
+// SubRefund removes gas from the refund counter.
+// This method will panic if the refund counter goes below zero
+func (self *StateDB) SubRefund(gas uint64) {
+	self.journal.append(refundChange{prev: self.refund})
+	if gas > self.refund {
+		panic("Refund counter below zero")
+	}
+	self.refund -= gas
+}
+
 // Exist reports whether the given account address exists in the state.
 // Notably this also returns true for suicided accounts.
 func (self *StateDB) Exist(addr common.Address) bool {
@@ -236,10 +247,20 @@ func (self *StateDB) GetCodeHash(addr common.Address) common.Hash {
 	return common.BytesToHash(stateObject.CodeHash())
 }
 
-func (self *StateDB) GetState(addr common.Address, bhash common.Hash) common.Hash {
+// GetState retrieves a value from the given account's storage trie.
+func (self *StateDB) GetState(addr common.Address, hash common.Hash) common.Hash {
 	stateObject := self.getStateObject(addr)
 	if stateObject != nil {
-		return stateObject.GetState(self.db, bhash)
+		return stateObject.GetState(self.db, hash)
+	}
+	return common.Hash{}
+}
+
+// GetCommittedState retrieves a value from the given account's committed storage trie.
+func (self *StateDB) GetCommittedState(addr common.Address, hash common.Hash) common.Hash {
+	stateObject := self.getStateObject(addr)
+	if stateObject != nil {
+		return stateObject.GetCommittedState(self.db, hash)
 	}
 	return common.Hash{}
 }
@@ -435,19 +456,14 @@ func (db *StateDB) ForEachStorage(addr common.Address, cb func(key, value common
 	if so == nil {
 		return
 	}
-
-	// When iterating over the storage check the cache first
-	for h, value := range so.cachedStorage {
-		cb(h, value)
-	}
-
 	it := trie.NewIterator(so.getTrie(db.db).NodeIterator(nil))
 	for it.Next() {
-		// ignore cached values
 		key := common.BytesToHash(db.trie.GetKey(it.Key))
-		if _, ok := so.cachedStorage[key]; !ok {
+		if value, dirty := so.dirtyStorage[key]; dirty {
-			cb(key, common.BytesToHash(it.Value))
+			cb(key, value)
+			continue
 		}
+		cb(key, common.BytesToHash(it.Value))
 	}
 }
 

core/state/statedb_test.go

@@ -381,11 +381,11 @@ func (test *snapshotTest) checkEqual(state, checkstate *StateDB) error {
 		checkeq("GetCodeSize", state.GetCodeSize(addr), checkstate.GetCodeSize(addr))
 		// Check storage.
 		if obj := state.getStateObject(addr); obj != nil {
-			state.ForEachStorage(addr, func(key, val common.Hash) bool {
+			state.ForEachStorage(addr, func(key, value common.Hash) bool {
-				return checkeq("GetState("+key.Hex()+")", val, checkstate.GetState(addr, key))
+				return checkeq("GetState("+key.Hex()+")", checkstate.GetState(addr, key), value)
 			})
-			checkstate.ForEachStorage(addr, func(key, checkval common.Hash) bool {
+			checkstate.ForEachStorage(addr, func(key, value common.Hash) bool {
-				return checkeq("GetState("+key.Hex()+")", state.GetState(addr, key), checkval)
+				return checkeq("GetState("+key.Hex()+")", checkstate.GetState(addr, key), value)
 			})
 		}
 		if err != nil {

core/state_processor.go

@@ -110,7 +110,7 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
 	*usedGas += gas
 
 	// Create a new receipt for the transaction, storing the intermediate root and gas used by the tx
-	// based on the eip phase, we're passing wether the root touch-delete accounts.
+	// based on the eip phase, we're passing whether the root touch-delete accounts.
 	receipt := types.NewReceipt(root, failed, *usedGas)
 	receipt.TxHash = tx.Hash()
 	receipt.GasUsed = gas

core/tx_pool.go

@@ -26,13 +26,13 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/prque"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/params"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 const (
@@ -525,7 +525,7 @@ func (pool *TxPool) Content() (map[common.Address]types.Transactions, map[common
 	return pending, queued
 }
 
-// Pending retrieves all currently processable transactions, groupped by origin
+// Pending retrieves all currently processable transactions, grouped by origin
 // account and sorted by nonce. The returned transaction set is a copy and can be
 // freely modified by calling code.
 func (pool *TxPool) Pending() (map[common.Address]types.Transactions, error) {
@@ -547,7 +547,7 @@ func (pool *TxPool) Locals() []common.Address {
 	return pool.locals.flatten()
 }
 
-// local retrieves all currently known local transactions, groupped by origin
+// local retrieves all currently known local transactions, grouped by origin
 // account and sorted by nonce. The returned transaction set is a copy and can be
 // freely modified by calling code.
 func (pool *TxPool) local() map[common.Address]types.Transactions {
@@ -987,11 +987,11 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 	if pending > pool.config.GlobalSlots {
 		pendingBeforeCap := pending
 		// Assemble a spam order to penalize large transactors first
-		spammers := prque.New()
+		spammers := prque.New(nil)
 		for addr, list := range pool.pending {
 			// Only evict transactions from high rollers
 			if !pool.locals.contains(addr) && uint64(list.Len()) > pool.config.AccountSlots {
-				spammers.Push(addr, float32(list.Len()))
+				spammers.Push(addr, int64(list.Len()))
 			}
 		}
 		// Gradually drop transactions from offenders

core/types/bloom9.go

@@ -113,7 +113,7 @@ func LogsBloom(logs []*Log) *big.Int {
 }
 
 func bloom9(b []byte) *big.Int {
-	b = crypto.Keccak256(b[:])
+	b = crypto.Keccak256(b)
 
 	r := new(big.Int)
 
@@ -130,7 +130,7 @@ var Bloom9 = bloom9
 
 func BloomLookup(bin Bloom, topic bytesBacked) bool {
 	bloom := bin.Big()
-	cmp := bloom9(topic.Bytes()[:])
+	cmp := bloom9(topic.Bytes())
 
 	return bloom.And(bloom, cmp).Cmp(cmp) == 0
 }

core/vm/evm.go

@@ -41,7 +41,7 @@ type (
 )
 
 // run runs the given contract and takes care of running precompiles with a fallback to the byte code interpreter.
-func run(evm *EVM, contract *Contract, input []byte) ([]byte, error) {
+func run(evm *EVM, contract *Contract, input []byte, readOnly bool) ([]byte, error) {
 	if contract.CodeAddr != nil {
 		precompiles := PrecompiledContractsHomestead
 		if evm.ChainConfig().IsByzantium(evm.BlockNumber) {
@@ -61,7 +61,7 @@ func run(evm *EVM, contract *Contract, input []byte) ([]byte, error) {
 				}(evm.interpreter)
 				evm.interpreter = interpreter
 			}
-			return interpreter.Run(contract, input)
+			return interpreter.Run(contract, input, readOnly)
 		}
 	}
 	return nil, ErrNoCompatibleInterpreter
@@ -136,10 +136,28 @@ func NewEVM(ctx Context, statedb StateDB, chainConfig *params.ChainConfig, vmCon
 		vmConfig:     vmConfig,
 		chainConfig:  chainConfig,
 		chainRules:   chainConfig.Rules(ctx.BlockNumber),
-		interpreters: make([]Interpreter, 1),
+		interpreters: make([]Interpreter, 0, 1),
 	}
 
-	evm.interpreters[0] = NewEVMInterpreter(evm, vmConfig)
+	if chainConfig.IsEWASM(ctx.BlockNumber) {
+		// to be implemented by EVM-C and Wagon PRs.
+		// if vmConfig.EWASMInterpreter != "" {
+		//  extIntOpts := strings.Split(vmConfig.EWASMInterpreter, ":")
+		//  path := extIntOpts[0]
+		//  options := []string{}
+		//  if len(extIntOpts) > 1 {
+		//    options = extIntOpts[1..]
+		//  }
+		//  evm.interpreters = append(evm.interpreters, NewEVMVCInterpreter(evm, vmConfig, options))
+		// } else {
+		// 	evm.interpreters = append(evm.interpreters, NewEWASMInterpreter(evm, vmConfig))
+		// }
+		panic("No supported ewasm interpreter yet.")
+	}
+
+	// vmConfig.EVMInterpreter will be used by EVM-C, it won't be checked here
+	// as we always want to have the built-in EVM as the failover option.
+	evm.interpreters = append(evm.interpreters, NewEVMInterpreter(evm, vmConfig))
 	evm.interpreter = evm.interpreters[0]
 
 	return evm
@@ -210,7 +228,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 			evm.vmConfig.Tracer.CaptureEnd(ret, gas-contract.Gas, time.Since(start), err)
 		}()
 	}
-	ret, err = run(evm, contract, input)
+	ret, err = run(evm, contract, input, false)
 
 	// When an error was returned by the EVM or when setting the creation code
 	// above we revert to the snapshot and consume any gas remaining. Additionally
@@ -255,7 +273,7 @@ func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte,
 	contract := NewContract(caller, to, value, gas)
 	contract.SetCallCode(&addr, evm.StateDB.GetCodeHash(addr), evm.StateDB.GetCode(addr))
 
-	ret, err = run(evm, contract, input)
+	ret, err = run(evm, contract, input, false)
 	if err != nil {
 		evm.StateDB.RevertToSnapshot(snapshot)
 		if err != errExecutionReverted {
@@ -288,7 +306,7 @@ func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []by
 	contract := NewContract(caller, to, nil, gas).AsDelegate()
 	contract.SetCallCode(&addr, evm.StateDB.GetCodeHash(addr), evm.StateDB.GetCode(addr))
 
-	ret, err = run(evm, contract, input)
+	ret, err = run(evm, contract, input, false)
 	if err != nil {
 		evm.StateDB.RevertToSnapshot(snapshot)
 		if err != errExecutionReverted {
@@ -310,13 +328,6 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte
 	if evm.depth > int(params.CallCreateDepth) {
 		return nil, gas, ErrDepth
 	}
-	// Make sure the readonly is only set if we aren't in readonly yet
-	// this makes also sure that the readonly flag isn't removed for
-	// child calls.
-	if !evm.interpreter.IsReadOnly() {
-		evm.interpreter.SetReadOnly(true)
-		defer func() { evm.interpreter.SetReadOnly(false) }()
-	}
 
 	var (
 		to       = AccountRef(addr)
@@ -331,7 +342,7 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte
 	// When an error was returned by the EVM or when setting the creation code
 	// above we revert to the snapshot and consume any gas remaining. Additionally
 	// when we're in Homestead this also counts for code storage gas errors.
-	ret, err = run(evm, contract, input)
+	ret, err = run(evm, contract, input, true)
 	if err != nil {
 		evm.StateDB.RevertToSnapshot(snapshot)
 		if err != errExecutionReverted {
@@ -382,7 +393,7 @@ func (evm *EVM) create(caller ContractRef, code []byte, gas uint64, value *big.I
 	}
 	start := time.Now()
 
-	ret, err := run(evm, contract, nil)
+	ret, err := run(evm, contract, nil, false)
 
 	// check whether the max code size has been exceeded
 	maxCodeSizeExceeded := evm.ChainConfig().IsEIP158(evm.BlockNumber) && len(ret) > params.MaxCodeSize

core/vm/gas_table.go

@@ -118,23 +118,68 @@ func gasReturnDataCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *
 func gasSStore(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
 	var (
 		y, x    = stack.Back(1), stack.Back(0)
-		val  = evm.StateDB.GetState(contract.Address(), common.BigToHash(x))
+		current = evm.StateDB.GetState(contract.Address(), common.BigToHash(x))
 	)
-	// This checks for 3 scenario's and calculates gas accordingly
+	// The legacy gas metering only takes into consideration the current state
+	if !evm.chainRules.IsConstantinople {
+		// This checks for 3 scenario's and calculates gas accordingly:
+		//
 		// 1. From a zero-value address to a non-zero value         (NEW VALUE)
 		// 2. From a non-zero value address to a zero-value address (DELETE)
 		// 3. From a non-zero to a non-zero                         (CHANGE)
-	if val == (common.Hash{}) && y.Sign() != 0 {
+		switch {
-		// 0 => non 0
+		case current == (common.Hash{}) && y.Sign() != 0: // 0 => non 0
 			return params.SstoreSetGas, nil
-	} else if val != (common.Hash{}) && y.Sign() == 0 {
+		case current != (common.Hash{}) && y.Sign() == 0: // non 0 => 0
-		// non 0 => 0
 			evm.StateDB.AddRefund(params.SstoreRefundGas)
 			return params.SstoreClearGas, nil
-	} else {
+		default: // non 0 => non 0 (or 0 => 0)
-		// non 0 => non 0 (or 0 => 0)
 			return params.SstoreResetGas, nil
 		}
+	}
+	// The new gas metering is based on net gas costs (EIP-1283):
+	//
+	// 1. If current value equals new value (this is a no-op), 200 gas is deducted.
+	// 2. If current value does not equal new value
+	//   2.1. If original value equals current value (this storage slot has not been changed by the current execution context)
+	//     2.1.1. If original value is 0, 20000 gas is deducted.
+	// 	   2.1.2. Otherwise, 5000 gas is deducted. If new value is 0, add 15000 gas to refund counter.
+	// 	2.2. If original value does not equal current value (this storage slot is dirty), 200 gas is deducted. Apply both of the following clauses.
+	// 	  2.2.1. If original value is not 0
+	//       2.2.1.1. If current value is 0 (also means that new value is not 0), remove 15000 gas from refund counter. We can prove that refund counter will never go below 0.
+	//       2.2.1.2. If new value is 0 (also means that current value is not 0), add 15000 gas to refund counter.
+	// 	  2.2.2. If original value equals new value (this storage slot is reset)
+	//       2.2.2.1. If original value is 0, add 19800 gas to refund counter.
+	// 	     2.2.2.2. Otherwise, add 4800 gas to refund counter.
+	value := common.BigToHash(y)
+	if current == value { // noop (1)
+		return params.NetSstoreNoopGas, nil
+	}
+	original := evm.StateDB.GetCommittedState(contract.Address(), common.BigToHash(x))
+	if original == current {
+		if original == (common.Hash{}) { // create slot (2.1.1)
+			return params.NetSstoreInitGas, nil
+		}
+		if value == (common.Hash{}) { // delete slot (2.1.2b)
+			evm.StateDB.AddRefund(params.NetSstoreClearRefund)
+		}
+		return params.NetSstoreCleanGas, nil // write existing slot (2.1.2)
+	}
+	if original != (common.Hash{}) {
+		if current == (common.Hash{}) { // recreate slot (2.2.1.1)
+			evm.StateDB.SubRefund(params.NetSstoreClearRefund)
+		} else if value == (common.Hash{}) { // delete slot (2.2.1.2)
+			evm.StateDB.AddRefund(params.NetSstoreClearRefund)
+		}
+	}
+	if original == value {
+		if original == (common.Hash{}) { // reset to original inexistent slot (2.2.2.1)
+			evm.StateDB.AddRefund(params.NetSstoreResetClearRefund)
+		} else { // reset to original existing slot (2.2.2.2)
+			evm.StateDB.AddRefund(params.NetSstoreResetRefund)
+		}
+	}
+	return params.NetSstoreDirtyGas, nil
 }
 
 func makeGasLog(n uint64) gasFunc {

core/vm/instructions.go

@@ -355,7 +355,7 @@ func opSAR(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *
 	defer interpreter.intPool.put(shift) // First operand back into the pool
 
 	if shift.Cmp(common.Big256) >= 0 {
-		if value.Sign() > 0 {
+		if value.Sign() >= 0 {
 			value.SetUint64(0)
 		} else {
 			value.SetInt64(-1)
@@ -727,7 +727,7 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memo
 }
 
 func opCall(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
-	// Pop gas. The actual gas in in interpreter.evm.callGasTemp.
+	// Pop gas. The actual gas in interpreter.evm.callGasTemp.
 	interpreter.intPool.put(stack.pop())
 	gas := interpreter.evm.callGasTemp
 	// Pop other call parameters.

core/vm/interface.go

@@ -40,8 +40,10 @@ type StateDB interface {
 	GetCodeSize(common.Address) int
 
 	AddRefund(uint64)
+	SubRefund(uint64)
 	GetRefund() uint64
 
+	GetCommittedState(common.Address, common.Hash) common.Hash
 	GetState(common.Address, common.Hash) common.Hash
 	SetState(common.Address, common.Hash, common.Hash)
 
@@ -64,7 +66,7 @@ type StateDB interface {
 	ForEachStorage(common.Address, func(common.Hash, common.Hash) bool)
 }
 
-// CallContext provides a basic interface for the EVM calling conventions. The EVM EVM
+// CallContext provides a basic interface for the EVM calling conventions. The EVM
 // depends on this context being implemented for doing subcalls and initialising new EVM contracts.
 type CallContext interface {
 	// Call another contract

core/vm/interpreter.go

@@ -39,6 +39,11 @@ type Config struct {
 	// may be left uninitialised and will be set to the default
 	// table.
 	JumpTable [256]operation
+
+	// Type of the EWASM interpreter
+	EWASMInterpreter string
+	// Type of the EVM interpreter
+	EVMInterpreter string
 }
 
 // Interpreter is used to run Ethereum based contracts and will utilise the
@@ -48,7 +53,7 @@ type Config struct {
 type Interpreter interface {
 	// Run loops and evaluates the contract's code with the given input data and returns
 	// the return byte-slice and an error if one occurred.
-	Run(contract *Contract, input []byte) ([]byte, error)
+	Run(contract *Contract, input []byte, static bool) ([]byte, error)
 	// CanRun tells if the contract, passed as an argument, can be
 	// run by the current interpreter. This is meant so that the
 	// caller can do something like:
@@ -61,10 +66,6 @@ type Interpreter interface {
 	// }
 	// ```
 	CanRun([]byte) bool
-	// IsReadOnly reports if the interpreter is in read only mode.
-	IsReadOnly() bool
-	// SetReadOnly sets (or unsets) read only mode in the interpreter.
-	SetReadOnly(bool)
 }
 
 // EVMInterpreter represents an EVM interpreter
@@ -125,7 +126,7 @@ func (in *EVMInterpreter) enforceRestrictions(op OpCode, operation operation, st
 // It's important to note that any errors returned by the interpreter should be
 // considered a revert-and-consume-all-gas operation except for
 // errExecutionReverted which means revert-and-keep-gas-left.
-func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err error) {
+func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (ret []byte, err error) {
 	if in.intPool == nil {
 		in.intPool = poolOfIntPools.get()
 		defer func() {
@@ -138,6 +139,13 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err
 	in.evm.depth++
 	defer func() { in.evm.depth-- }()
 
+	// Make sure the readOnly is only set if we aren't in readOnly yet.
+	// This makes also sure that the readOnly flag isn't removed for child calls.
+	if readOnly && !in.readOnly {
+		in.readOnly = true
+		defer func() { in.readOnly = false }()
+	}
+
 	// Reset the previous call's return data. It's unimportant to preserve the old buffer
 	// as every returning call will return new data anyway.
 	in.returnData = nil
@@ -263,13 +271,3 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err
 func (in *EVMInterpreter) CanRun(code []byte) bool {
 	return true
 }
-
-// IsReadOnly reports if the interpreter is in read only mode.
-func (in *EVMInterpreter) IsReadOnly() bool {
-	return in.readOnly
-}
-
-// SetReadOnly sets (or unsets) read only mode in the interpreter.
-func (in *EVMInterpreter) SetReadOnly(ro bool) {
-	in.readOnly = ro
-}

core/vm/logger_test.go

@@ -41,11 +41,6 @@ func (d *dummyContractRef) SetBalance(*big.Int)        {}
 func (d *dummyContractRef) SetNonce(uint64)            {}
 func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
 
-type dummyStateDB struct {
-	NoopStateDB
-	ref *dummyContractRef
-}
-
 func TestStoreCapture(t *testing.T) {
 	var (
 		env      = NewEVM(Context{}, nil, params.TestChainConfig, Config{})

core/vm/memory.go

@@ -29,7 +29,7 @@ type Memory struct {
 	lastGasCost uint64
 }
 
-// NewMemory returns a new memory memory model.
+// NewMemory returns a new memory model.
 func NewMemory() *Memory {
 	return &Memory{}
 }

core/vm/noop.go

@@ -1,70 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package vm
-
-import (
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/types"
-)
-
-func NoopCanTransfer(db StateDB, from common.Address, balance *big.Int) bool {
-	return true
-}
-func NoopTransfer(db StateDB, from, to common.Address, amount *big.Int) {}
-
-type NoopEVMCallContext struct{}
-
-func (NoopEVMCallContext) Call(caller ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
-	return nil, nil
-}
-func (NoopEVMCallContext) CallCode(caller ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
-	return nil, nil
-}
-func (NoopEVMCallContext) Create(caller ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error) {
-	return nil, common.Address{}, nil
-}
-func (NoopEVMCallContext) DelegateCall(me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error) {
-	return nil, nil
-}
-
-type NoopStateDB struct{}
-
-func (NoopStateDB) CreateAccount(common.Address)                                       {}
-func (NoopStateDB) SubBalance(common.Address, *big.Int)                                {}
-func (NoopStateDB) AddBalance(common.Address, *big.Int)                                {}
-func (NoopStateDB) GetBalance(common.Address) *big.Int                                 { return nil }
-func (NoopStateDB) GetNonce(common.Address) uint64                                     { return 0 }
-func (NoopStateDB) SetNonce(common.Address, uint64)                                    {}
-func (NoopStateDB) GetCodeHash(common.Address) common.Hash                             { return common.Hash{} }
-func (NoopStateDB) GetCode(common.Address) []byte                                      { return nil }
-func (NoopStateDB) SetCode(common.Address, []byte)                                     {}
-func (NoopStateDB) GetCodeSize(common.Address) int                                     { return 0 }
-func (NoopStateDB) AddRefund(uint64)                                                   {}
-func (NoopStateDB) GetRefund() uint64                                                  { return 0 }
-func (NoopStateDB) GetState(common.Address, common.Hash) common.Hash                   { return common.Hash{} }
-func (NoopStateDB) SetState(common.Address, common.Hash, common.Hash)                  {}
-func (NoopStateDB) Suicide(common.Address) bool                                        { return false }
-func (NoopStateDB) HasSuicided(common.Address) bool                                    { return false }
-func (NoopStateDB) Exist(common.Address) bool                                          { return false }
-func (NoopStateDB) Empty(common.Address) bool                                          { return false }
-func (NoopStateDB) RevertToSnapshot(int)                                               {}
-func (NoopStateDB) Snapshot() int                                                      { return 0 }
-func (NoopStateDB) AddLog(*types.Log)                                                  {}
-func (NoopStateDB) AddPreimage(common.Hash, []byte)                                    {}
-func (NoopStateDB) ForEachStorage(common.Address, func(common.Hash, common.Hash) bool) {}

crypto/secp256k1/libsecp256k1/src/num.h

@@ -54,7 +54,7 @@ static void secp256k1_num_mul(secp256k1_num *r, const secp256k1_num *a, const se
     even if r was negative. */
 static void secp256k1_num_mod(secp256k1_num *r, const secp256k1_num *m);
 
-/** Right-shift the passed number by bits bits. */
+/** Right-shift the passed number by bits. */
 static void secp256k1_num_shift(secp256k1_num *r, int bits);
 
 /** Check whether a number is zero. */

crypto/secp256k1/libsecp256k1/src/secp256k1.c

@@ -26,7 +26,6 @@
 } while(0)
 
 static void default_illegal_callback_fn(const char* str, void* data) {
-    (void)data;
     fprintf(stderr, "[libsecp256k1] illegal argument: %s\n", str);
     abort();
 }
@@ -37,7 +36,6 @@ static const secp256k1_callback default_illegal_callback = {
 };
 
 static void default_error_callback_fn(const char* str, void* data) {
-    (void)data;
     fprintf(stderr, "[libsecp256k1] internal consistency check failed: %s\n", str);
     abort();
 }

eth/api_tracer.go

@@ -127,7 +127,7 @@ func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end rpc.Block
 
 // traceChain configures a new tracer according to the provided configuration, and
 // executes all the transactions contained within. The return value will be one item
-// per transaction, dependent on the requestd tracer.
+// per transaction, dependent on the requested tracer.
 func (api *PrivateDebugAPI) traceChain(ctx context.Context, start, end *types.Block, config *TraceConfig) (*rpc.Subscription, error) {
 	// Tracing a chain is a **long** operation, only do with subscriptions
 	notifier, supported := rpc.NotifierFromContext(ctx)

eth/backend.go

@@ -149,10 +149,14 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 		rawdb.WriteDatabaseVersion(chainDb, core.BlockChainVersion)
 	}
 	var (
-		vmConfig    = vm.Config{EnablePreimageRecording: config.EnablePreimageRecording}
+		vmConfig = vm.Config{
+			EnablePreimageRecording: config.EnablePreimageRecording,
+			EWASMInterpreter:        config.EWASMInterpreter,
+			EVMInterpreter:          config.EVMInterpreter,
+		}
 		cacheConfig = &core.CacheConfig{Disabled: config.NoPruning, TrieNodeLimit: config.TrieCache, TrieTimeLimit: config.TrieTimeout}
 	)
-	eth.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, eth.chainConfig, eth.engine, vmConfig)
+	eth.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, eth.chainConfig, eth.engine, vmConfig, eth.shouldPreserve)
 	if err != nil {
 		return nil, err
 	}
@@ -173,7 +177,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 		return nil, err
 	}
 
-	eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.engine, config.MinerRecommit, config.MinerGasFloor, config.MinerGasCeil)
+	eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.engine, config.MinerRecommit, config.MinerGasFloor, config.MinerGasCeil, eth.isLocalBlock)
 	eth.miner.SetExtra(makeExtraData(config.MinerExtraData))
 
 	eth.APIBackend = &EthAPIBackend{eth, nil}
@@ -330,6 +334,60 @@ func (s *Ethereum) Etherbase() (eb common.Address, err error) {
 	return common.Address{}, fmt.Errorf("etherbase must be explicitly specified")
 }
 
+// isLocalBlock checks whether the specified block is mined
+// by local miner accounts.
+//
+// We regard two types of accounts as local miner account: etherbase
+// and accounts specified via `txpool.locals` flag.
+func (s *Ethereum) isLocalBlock(block *types.Block) bool {
+	author, err := s.engine.Author(block.Header())
+	if err != nil {
+		log.Warn("Failed to retrieve block author", "number", block.NumberU64(), "hash", block.Hash(), "err", err)
+		return false
+	}
+	// Check whether the given address is etherbase.
+	s.lock.RLock()
+	etherbase := s.etherbase
+	s.lock.RUnlock()
+	if author == etherbase {
+		return true
+	}
+	// Check whether the given address is specified by `txpool.local`
+	// CLI flag.
+	for _, account := range s.config.TxPool.Locals {
+		if account == author {
+			return true
+		}
+	}
+	return false
+}
+
+// shouldPreserve checks whether we should preserve the given block
+// during the chain reorg depending on whether the author of block
+// is a local account.
+func (s *Ethereum) shouldPreserve(block *types.Block) bool {
+	// The reason we need to disable the self-reorg preserving for clique
+	// is it can be probable to introduce a deadlock.
+	//
+	// e.g. If there are 7 available signers
+	//
+	// r1   A
+	// r2     B
+	// r3       C
+	// r4         D
+	// r5   A      [X] F G
+	// r6    [X]
+	//
+	// In the round5, the inturn signer E is offline, so the worst case
+	// is A, F and G sign the block of round5 and reject the block of opponents
+	// and in the round6, the last available signer B is offline, the whole
+	// network is stuck.
+	if _, ok := s.engine.(*clique.Clique); ok {
+		return false
+	}
+	return s.isLocalBlock(block)
+}
+
 // SetEtherbase sets the mining reward address.
 func (s *Ethereum) SetEtherbase(etherbase common.Address) {
 	s.lock.Lock()
@@ -362,7 +420,7 @@ func (s *Ethereum) StartMining(threads int) error {
 		s.lock.RUnlock()
 		s.txPool.SetGasPrice(price)
 
-		// Configure the local mining addess
+		// Configure the local mining address
 		eb, err := s.Etherbase()
 		if err != nil {
 			log.Error("Cannot start mining without etherbase", "err", err)

eth/config.go

@@ -124,6 +124,11 @@ type Config struct {
 
 	// specify time to exit after syncing
 	ExitWhenSynced time.Duration
+  
+	// Type of the EWASM interpreter ("" for detault)
+	EWASMInterpreter string
+	// Type of the EVM interpreter ("" for default)
+	EVMInterpreter string
 }
 
 type configMarshaling struct {

eth/downloader/queue.go

@@ -26,10 +26,10 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/prque"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/metrics"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 var (
@@ -105,11 +105,11 @@ func newQueue() *queue {
 		headerPendPool:   make(map[string]*fetchRequest),
 		headerContCh:     make(chan bool),
 		blockTaskPool:    make(map[common.Hash]*types.Header),
-		blockTaskQueue:   prque.New(),
+		blockTaskQueue:   prque.New(nil),
 		blockPendPool:    make(map[string]*fetchRequest),
 		blockDonePool:    make(map[common.Hash]struct{}),
 		receiptTaskPool:  make(map[common.Hash]*types.Header),
-		receiptTaskQueue: prque.New(),
+		receiptTaskQueue: prque.New(nil),
 		receiptPendPool:  make(map[string]*fetchRequest),
 		receiptDonePool:  make(map[common.Hash]struct{}),
 		resultCache:      make([]*fetchResult, blockCacheItems),
@@ -277,7 +277,7 @@ func (q *queue) ScheduleSkeleton(from uint64, skeleton []*types.Header) {
 	}
 	// Schedule all the header retrieval tasks for the skeleton assembly
 	q.headerTaskPool = make(map[uint64]*types.Header)
-	q.headerTaskQueue = prque.New()
+	q.headerTaskQueue = prque.New(nil)
 	q.headerPeerMiss = make(map[string]map[uint64]struct{}) // Reset availability to correct invalid chains
 	q.headerResults = make([]*types.Header, len(skeleton)*MaxHeaderFetch)
 	q.headerProced = 0
@@ -288,7 +288,7 @@ func (q *queue) ScheduleSkeleton(from uint64, skeleton []*types.Header) {
 		index := from + uint64(i*MaxHeaderFetch)
 
 		q.headerTaskPool[index] = header
-		q.headerTaskQueue.Push(index, -float32(index))
+		q.headerTaskQueue.Push(index, -int64(index))
 	}
 }
 
@@ -334,11 +334,11 @@ func (q *queue) Schedule(headers []*types.Header, from uint64) []*types.Header {
 		}
 		// Queue the header for content retrieval
 		q.blockTaskPool[hash] = header
-		q.blockTaskQueue.Push(header, -float32(header.Number.Uint64()))
+		q.blockTaskQueue.Push(header, -int64(header.Number.Uint64()))
 
 		if q.mode == FastSync {
 			q.receiptTaskPool[hash] = header
-			q.receiptTaskQueue.Push(header, -float32(header.Number.Uint64()))
+			q.receiptTaskQueue.Push(header, -int64(header.Number.Uint64()))
 		}
 		inserts = append(inserts, header)
 		q.headerHead = hash
@@ -436,7 +436,7 @@ func (q *queue) ReserveHeaders(p *peerConnection, count int) *fetchRequest {
 	}
 	// Merge all the skipped batches back
 	for _, from := range skip {
-		q.headerTaskQueue.Push(from, -float32(from))
+		q.headerTaskQueue.Push(from, -int64(from))
 	}
 	// Assemble and return the block download request
 	if send == 0 {
@@ -542,7 +542,7 @@ func (q *queue) reserveHeaders(p *peerConnection, count int, taskPool map[common
 	}
 	// Merge all the skipped headers back
 	for _, header := range skip {
-		taskQueue.Push(header, -float32(header.Number.Uint64()))
+		taskQueue.Push(header, -int64(header.Number.Uint64()))
 	}
 	if progress {
 		// Wake WaitResults, resultCache was modified
@@ -585,10 +585,10 @@ func (q *queue) cancel(request *fetchRequest, taskQueue *prque.Prque, pendPool m
 	defer q.lock.Unlock()
 
 	if request.From > 0 {
-		taskQueue.Push(request.From, -float32(request.From))
+		taskQueue.Push(request.From, -int64(request.From))
 	}
 	for _, header := range request.Headers {
-		taskQueue.Push(header, -float32(header.Number.Uint64()))
+		taskQueue.Push(header, -int64(header.Number.Uint64()))
 	}
 	delete(pendPool, request.Peer.id)
 }
@@ -602,13 +602,13 @@ func (q *queue) Revoke(peerID string) {
 
 	if request, ok := q.blockPendPool[peerID]; ok {
 		for _, header := range request.Headers {
-			q.blockTaskQueue.Push(header, -float32(header.Number.Uint64()))
+			q.blockTaskQueue.Push(header, -int64(header.Number.Uint64()))
 		}
 		delete(q.blockPendPool, peerID)
 	}
 	if request, ok := q.receiptPendPool[peerID]; ok {
 		for _, header := range request.Headers {
-			q.receiptTaskQueue.Push(header, -float32(header.Number.Uint64()))
+			q.receiptTaskQueue.Push(header, -int64(header.Number.Uint64()))
 		}
 		delete(q.receiptPendPool, peerID)
 	}
@@ -657,10 +657,10 @@ func (q *queue) expire(timeout time.Duration, pendPool map[string]*fetchRequest,
 
 			// Return any non satisfied requests to the pool
 			if request.From > 0 {
-				taskQueue.Push(request.From, -float32(request.From))
+				taskQueue.Push(request.From, -int64(request.From))
 			}
 			for _, header := range request.Headers {
-				taskQueue.Push(header, -float32(header.Number.Uint64()))
+				taskQueue.Push(header, -int64(header.Number.Uint64()))
 			}
 			// Add the peer to the expiry report along the number of failed requests
 			expiries[id] = len(request.Headers)
@@ -731,7 +731,7 @@ func (q *queue) DeliverHeaders(id string, headers []*types.Header, headerProcCh
 		}
 		miss[request.From] = struct{}{}
 
-		q.headerTaskQueue.Push(request.From, -float32(request.From))
+		q.headerTaskQueue.Push(request.From, -int64(request.From))
 		return 0, errors.New("delivery not accepted")
 	}
 	// Clean up a successful fetch and try to deliver any sub-results
@@ -854,7 +854,7 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header, taskQ
 	// Return all failed or missing fetches to the queue
 	for _, header := range request.Headers {
 		if header != nil {
-			taskQueue.Push(header, -float32(header.Number.Uint64()))
+			taskQueue.Push(header, -int64(header.Number.Uint64()))
 		}
 	}
 	// Wake up WaitResults

eth/fetcher/fetcher.go

@@ -23,10 +23,10 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/prque"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 const (
@@ -160,7 +160,7 @@ func New(getBlock blockRetrievalFn, verifyHeader headerVerifierFn, broadcastBloc
 		fetching:       make(map[common.Hash]*announce),
 		fetched:        make(map[common.Hash][]*announce),
 		completing:     make(map[common.Hash]*announce),
-		queue:          prque.New(),
+		queue:          prque.New(nil),
 		queues:         make(map[string]int),
 		queued:         make(map[common.Hash]*inject),
 		getBlock:       getBlock,
@@ -299,7 +299,7 @@ func (f *Fetcher) loop() {
 			// If too high up the chain or phase, continue later
 			number := op.block.NumberU64()
 			if number > height+1 {
-				f.queue.Push(op, -float32(number))
+				f.queue.Push(op, -int64(number))
 				if f.queueChangeHook != nil {
 					f.queueChangeHook(hash, true)
 				}
@@ -624,7 +624,7 @@ func (f *Fetcher) enqueue(peer string, block *types.Block) {
 		}
 		f.queues[peer] = count
 		f.queued[hash] = op
-		f.queue.Push(op, -float32(block.NumberU64()))
+		f.queue.Push(op, -int64(block.NumberU64()))
 		if f.queueChangeHook != nil {
 			f.queueChangeHook(op.block.Hash(), true)
 		}

eth/handler.go

@@ -37,7 +37,7 @@ import (
 	"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/enode"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 )
@@ -147,7 +147,7 @@ func NewProtocolManager(config *params.ChainConfig, mode downloader.SyncMode, ne
 			NodeInfo: func() interface{} {
 				return manager.NodeInfo()
 			},
-			PeerInfo: func(id discover.NodeID) interface{} {
+			PeerInfo: func(id enode.ID) interface{} {
 				if p := manager.peers.Peer(fmt.Sprintf("%x", id[:8])); p != nil {
 					return p.Info()
 				}

eth/handler_test.go

@@ -472,7 +472,7 @@ func testDAOChallenge(t *testing.T, localForked, remoteForked bool, timeout bool
 		config        = &params.ChainConfig{DAOForkBlock: big.NewInt(1), DAOForkSupport: localForked}
 		gspec         = &core.Genesis{Config: config}
 		genesis       = gspec.MustCommit(db)
-		blockchain, _ = core.NewBlockChain(db, nil, config, pow, vm.Config{})
+		blockchain, _ = core.NewBlockChain(db, nil, config, pow, vm.Config{}, nil)
 	)
 	pm, err := NewProtocolManager(config, downloader.FullSync, DefaultConfig.NetworkId, evmux, new(testTxPool), pow, blockchain, db)
 	if err != nil {

eth/helper_test.go

@@ -37,7 +37,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"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/enode"
 	"github.com/ethereum/go-ethereum/params"
 )
 
@@ -59,7 +59,7 @@ func newTestProtocolManager(mode downloader.SyncMode, blocks int, generator func
 			Alloc:  core.GenesisAlloc{testBank: {Balance: big.NewInt(1000000)}},
 		}
 		genesis       = gspec.MustCommit(db)
-		blockchain, _ = core.NewBlockChain(db, nil, gspec.Config, engine, vm.Config{})
+		blockchain, _ = core.NewBlockChain(db, nil, gspec.Config, engine, vm.Config{}, nil)
 	)
 	chain, _ := core.GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, blocks, generator)
 	if _, err := blockchain.InsertChain(chain); err != nil {
@@ -148,7 +148,7 @@ func newTestPeer(name string, version int, pm *ProtocolManager, shake bool) (*te
 	app, net := p2p.MsgPipe()
 
 	// Generate a random id and create the peer
-	var id discover.NodeID
+	var id enode.ID
 	rand.Read(id[:])
 
 	peer := pm.newPeer(version, p2p.NewPeer(id, name, nil), net)

eth/sync.go

@@ -25,7 +25,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 )
 
 const (
@@ -64,7 +64,7 @@ func (pm *ProtocolManager) syncTransactions(p *peer) {
 // the transactions in small packs to one peer at a time.
 func (pm *ProtocolManager) txsyncLoop() {
 	var (
-		pending = make(map[discover.NodeID]*txsync)
+		pending = make(map[enode.ID]*txsync)
 		sending = false               // whether a send is active
 		pack    = new(txsync)         // the pack that is being sent
 		done    = make(chan error, 1) // result of the send

eth/sync_test.go

@@ -23,7 +23,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/p2p"
-	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 )
 
 // Tests that fast sync gets disabled as soon as a real block is successfully
@@ -42,8 +42,8 @@ func TestFastSyncDisabling(t *testing.T) {
 	// Sync up the two peers
 	io1, io2 := p2p.MsgPipe()
 
-	go pmFull.handle(pmFull.newPeer(63, p2p.NewPeer(discover.NodeID{}, "empty", nil), io2))
+	go pmFull.handle(pmFull.newPeer(63, p2p.NewPeer(enode.ID{}, "empty", nil), io2))
-	go pmEmpty.handle(pmEmpty.newPeer(63, p2p.NewPeer(discover.NodeID{}, "full", nil), io1))
+	go pmEmpty.handle(pmEmpty.newPeer(63, p2p.NewPeer(enode.ID{}, "full", nil), io1))
 
 	time.Sleep(250 * time.Millisecond)
 	pmEmpty.synchronise(pmEmpty.peers.BestPeer())

eth/tracers/tracer.go

@@ -124,7 +124,7 @@ func (mw *memoryWrapper) pushObject(vm *duktape.Context) {
 		ctx.Pop2()
 
 		ptr := ctx.PushFixedBuffer(len(blob))
-		copy(makeSlice(ptr, uint(len(blob))), blob[:])
+		copy(makeSlice(ptr, uint(len(blob))), blob)
 		return 1
 	})
 	vm.PutPropString(obj, "slice")
@@ -204,7 +204,7 @@ func (dw *dbWrapper) pushObject(vm *duktape.Context) {
 		code := dw.db.GetCode(common.BytesToAddress(popSlice(ctx)))
 
 		ptr := ctx.PushFixedBuffer(len(code))
-		copy(makeSlice(ptr, uint(len(code))), code[:])
+		copy(makeSlice(ptr, uint(len(code))), code)
 		return 1
 	})
 	vm.PutPropString(obj, "getCode")
@@ -268,7 +268,7 @@ func (cw *contractWrapper) pushObject(vm *duktape.Context) {
 		blob := cw.contract.Input
 
 		ptr := ctx.PushFixedBuffer(len(blob))
-		copy(makeSlice(ptr, uint(len(blob))), blob[:])
+		copy(makeSlice(ptr, uint(len(blob))), blob)
 		return 1
 	})
 	vm.PutPropString(obj, "getInput")
@@ -584,7 +584,7 @@ func (jst *Tracer) GetResult() (json.RawMessage, error) {
 
 		case []byte:
 			ptr := jst.vm.PushFixedBuffer(len(val))
-			copy(makeSlice(ptr, uint(len(val))), val[:])
+			copy(makeSlice(ptr, uint(len(val))), val)
 
 		case common.Address:
 			ptr := jst.vm.PushFixedBuffer(20)

eth/tracers/tracer_test.go

@@ -49,7 +49,7 @@ func runTrace(tracer *Tracer) (json.RawMessage, error) {
 	contract := vm.NewContract(account{}, account{}, big.NewInt(0), 10000)
 	contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x1, 0x0}
 
-	_, err := env.Interpreter().Run(contract, []byte{})
+	_, err := env.Interpreter().Run(contract, []byte{}, false)
 	if err != nil {
 		return nil, err
 	}

ethdb/database.go

@@ -155,15 +155,12 @@ func (db *LDBDatabase) LDB() *leveldb.DB {
 
 // Meter configures the database metrics collectors and
 func (db *LDBDatabase) Meter(prefix string) {
-	if metrics.Enabled {
 	// Initialize all the metrics collector at the requested prefix
 	db.compTimeMeter = metrics.NewRegisteredMeter(prefix+"compact/time", nil)
 	db.compReadMeter = metrics.NewRegisteredMeter(prefix+"compact/input", nil)
 	db.compWriteMeter = metrics.NewRegisteredMeter(prefix+"compact/output", nil)
 	db.diskReadMeter = metrics.NewRegisteredMeter(prefix+"disk/read", nil)
 	db.diskWriteMeter = metrics.NewRegisteredMeter(prefix+"disk/write", nil)
-	}
-	// Initialize write delay metrics no matter we are in metric mode or not.
 	db.writeDelayMeter = metrics.NewRegisteredMeter(prefix+"compact/writedelay/duration", nil)
 	db.writeDelayNMeter = metrics.NewRegisteredMeter(prefix+"compact/writedelay/counter", nil)
 

internal/build/util.go

@@ -143,9 +143,9 @@ func CopyFile(dst, src string, mode os.FileMode) {
 // so that go commands executed by build use the same version of Go as the 'host' that runs
 // build code. e.g.
 //
-//     /usr/lib/go-1.8/bin/go run build/ci.go ...
+//     /usr/lib/go-1.11/bin/go run build/ci.go ...
 //
-// runs using go 1.8 and invokes go 1.8 tools from the same GOROOT. This is also important
+// runs using go 1.11 and invokes go 1.11 tools from the same GOROOT. This is also important
 // because runtime.Version checks on the host should match the tools that are run.
 func GoTool(tool string, args ...string) *exec.Cmd {
 	args = append([]string{tool}, args...)

internal/ethapi/api.go

@@ -449,7 +449,7 @@ func (s *PrivateAccountAPI) Sign(ctx context.Context, data hexutil.Bytes, addr c
 // addr = ecrecover(hash, signature)
 //
 // Note, the signature must conform to the secp256k1 curve R, S and V values, where
-// the V value must be be 27 or 28 for legacy reasons.
+// the V value must be 27 or 28 for legacy reasons.
 //
 // https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_ecRecover
 func (s *PrivateAccountAPI) EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) {

internal/jsre/deps/web3.js

@@ -1021,7 +1021,7 @@ var formatOutputInt = function (param) {
     var value = param.staticPart() || "0";
 
     // check if it's negative number
-    // it it is, return two's complement
+    // it is, return two's complement
     if (signedIsNegative(value)) {
         return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1);
     }
@@ -2250,7 +2250,7 @@ var isAddress = function (address) {
         // check if it has the basic requirements of an address
         return false;
     } else if (/^(0x)?[0-9a-f]{40}$/.test(address) || /^(0x)?[0-9A-F]{40}$/.test(address)) {
-        // If it's all small caps or all all caps, return true
+        // If it's all small caps or all caps, return true
         return true;
     } else {
         // Otherwise check each case

les/commons.go

@@ -26,7 +26,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/light"
 	"github.com/ethereum/go-ethereum/p2p"
-	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/params"
 )
 
@@ -47,7 +47,7 @@ type NodeInfo struct {
 	Genesis    common.Hash              `json:"genesis"`    // SHA3 hash of the host's genesis block
 	Config     *params.ChainConfig      `json:"config"`     // Chain configuration for the fork rules
 	Head       common.Hash              `json:"head"`       // SHA3 hash of the host's best owned block
-	CHT        light.TrustedCheckpoint `json:"cht"`        // Trused CHT checkpoint for fast catchup
+	CHT        params.TrustedCheckpoint `json:"cht"`        // Trused CHT checkpoint for fast catchup
 }
 
 // makeProtocols creates protocol descriptors for the given LES versions.
@@ -63,7 +63,7 @@ func (c *lesCommons) makeProtocols(versions []uint) []p2p.Protocol {
 			Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
 				return c.protocolManager.runPeer(version, p, rw)
 			},
-			PeerInfo: func(id discover.NodeID) interface{} {
+			PeerInfo: func(id enode.ID) interface{} {
 				if p := c.protocolManager.peers.Peer(fmt.Sprintf("%x", id[:8])); p != nil {
 					return p.Info()
 				}
@@ -76,7 +76,7 @@ func (c *lesCommons) makeProtocols(versions []uint) []p2p.Protocol {
 
 // nodeInfo retrieves some protocol metadata about the running host node.
 func (c *lesCommons) nodeInfo() interface{} {
-	var cht light.TrustedCheckpoint
+	var cht params.TrustedCheckpoint
 	sections, _, _ := c.chtIndexer.Sections()
 	sections2, _, _ := c.bloomTrieIndexer.Sections()
 
@@ -98,8 +98,8 @@ func (c *lesCommons) nodeInfo() interface{} {
 			idxV2 := (sectionIndex+1)*c.iConfig.PairChtSize/c.iConfig.ChtSize - 1
 			chtRoot = light.GetChtRoot(c.chainDb, idxV2, sectionHead)
 		}
-		cht = light.TrustedCheckpoint{
+		cht = params.TrustedCheckpoint{
-			SectionIdx:  sectionIndex,
+			SectionIndex: sectionIndex,
 			SectionHead:  sectionHead,
 			CHTRoot:      chtRoot,
 			BloomRoot:    light.GetBloomTrieRoot(c.chainDb, sectionIndex, sectionHead),

les/distributor.go

@@ -114,7 +114,9 @@ func (d *requestDistributor) loop() {
 			d.lock.Lock()
 			elem := d.reqQueue.Front()
 			for elem != nil {
-				close(elem.Value.(*distReq).sentChn)
+				req := elem.Value.(*distReq)
+				close(req.sentChn)
+				req.sentChn = nil
 				elem = elem.Next()
 			}
 			d.lock.Unlock()

les/handler.go

@@ -213,8 +213,7 @@ func (pm *ProtocolManager) runPeer(version uint, p *p2p.Peer, rw p2p.MsgReadWrit
 	var entry *poolEntry
 	peer := pm.newPeer(int(version), pm.networkId, p, rw)
 	if pm.serverPool != nil {
-		addr := p.RemoteAddr().(*net.TCPAddr)
+		entry = pm.serverPool.connect(peer, peer.Node())
-		entry = pm.serverPool.connect(peer, addr.IP, uint16(addr.Port))
 	}
 	peer.poolEntry = entry
 	select {
@@ -382,7 +381,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 		}
 
 		if p.requestAnnounceType == announceTypeSigned {
-			if err := req.checkSignature(p.pubKey); err != nil {
+			if err := req.checkSignature(p.ID()); err != nil {
 				p.Log().Trace("Invalid announcement signature", "err", err)
 				return err
 			}

les/helper_test.go

@@ -38,7 +38,7 @@ import (
 	"github.com/ethereum/go-ethereum/les/flowcontrol"
 	"github.com/ethereum/go-ethereum/light"
 	"github.com/ethereum/go-ethereum/p2p"
-	"github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/params"
 )
 
@@ -164,7 +164,7 @@ func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *cor
 	if lightSync {
 		chain, _ = light.NewLightChain(odr, gspec.Config, engine)
 	} else {
-		blockchain, _ := core.NewBlockChain(db, nil, gspec.Config, engine, vm.Config{})
+		blockchain, _ := core.NewBlockChain(db, nil, gspec.Config, engine, vm.Config{}, nil)
 		gchain, _ := core.GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, blocks, generator)
 		if _, err := blockchain.InsertChain(gchain); err != nil {
 			panic(err)
@@ -221,7 +221,7 @@ func newTestPeer(t *testing.T, name string, version int, pm *ProtocolManager, sh
 	app, net := p2p.MsgPipe()
 
 	// Generate a random id and create the peer
-	var id discover.NodeID
+	var id enode.ID
 	rand.Read(id[:])
 
 	peer := pm.newPeer(version, NetworkId, p2p.NewPeer(id, name, nil), net)
@@ -258,7 +258,7 @@ func newTestPeerPair(name string, version int, pm, pm2 *ProtocolManager) (*peer,
 	app, net := p2p.MsgPipe()
 
 	// Generate a random id and create the peer
-	var id discover.NodeID
+	var id enode.ID
 	rand.Read(id[:])
 
 	peer := pm.newPeer(version, NetworkId, p2p.NewPeer(id, name, nil), net)

les/odr_requests.go

@@ -478,7 +478,7 @@ func (r *ChtRequest) Validate(db ethdb.Database, msg *Msg) error {
 }
 
 type BloomReq struct {
-	BloomTrieNum, BitIdx, SectionIdx, FromLevel uint64
+	BloomTrieNum, BitIdx, SectionIndex, FromLevel uint64
 }
 
 // ODR request type for requesting headers by Canonical Hash Trie, see LesOdrRequest interface
@@ -487,7 +487,7 @@ type BloomRequest light.BloomRequest
 // GetCost returns the cost of the given ODR request according to the serving
 // peer's cost table (implementation of LesOdrRequest)
 func (r *BloomRequest) GetCost(peer *peer) uint64 {
-	return peer.GetRequestCost(GetHelperTrieProofsMsg, len(r.SectionIdxList))
+	return peer.GetRequestCost(GetHelperTrieProofsMsg, len(r.SectionIndexList))
 }
 
 // CanSend tells if a certain peer is suitable for serving the given request
@@ -503,13 +503,13 @@ func (r *BloomRequest) CanSend(peer *peer) bool {
 
 // Request sends an ODR request to the LES network (implementation of LesOdrRequest)
 func (r *BloomRequest) Request(reqID uint64, peer *peer) error {
-	peer.Log().Debug("Requesting BloomBits", "bloomTrie", r.BloomTrieNum, "bitIdx", r.BitIdx, "sections", r.SectionIdxList)
+	peer.Log().Debug("Requesting BloomBits", "bloomTrie", r.BloomTrieNum, "bitIdx", r.BitIdx, "sections", r.SectionIndexList)
-	reqs := make([]HelperTrieReq, len(r.SectionIdxList))
+	reqs := make([]HelperTrieReq, len(r.SectionIndexList))
 
 	var encNumber [10]byte
 	binary.BigEndian.PutUint16(encNumber[:2], uint16(r.BitIdx))
 
-	for i, sectionIdx := range r.SectionIdxList {
+	for i, sectionIdx := range r.SectionIndexList {
 		binary.BigEndian.PutUint64(encNumber[2:], sectionIdx)
 		reqs[i] = HelperTrieReq{
 			Type:    htBloomBits,
@@ -524,7 +524,7 @@ func (r *BloomRequest) Request(reqID uint64, peer *peer) error {
 // returns true and stores results in memory if the message was a valid reply
 // to the request (implementation of LesOdrRequest)
 func (r *BloomRequest) Validate(db ethdb.Database, msg *Msg) error {
-	log.Debug("Validating BloomBits", "bloomTrie", r.BloomTrieNum, "bitIdx", r.BitIdx, "sections", r.SectionIdxList)
+	log.Debug("Validating BloomBits", "bloomTrie", r.BloomTrieNum, "bitIdx", r.BitIdx, "sections", r.SectionIndexList)
 
 	// Ensure we have a correct message with a single proof element
 	if msg.MsgType != MsgHelperTrieProofs {
@@ -535,13 +535,13 @@ func (r *BloomRequest) Validate(db ethdb.Database, msg *Msg) error {
 	nodeSet := proofs.NodeSet()
 	reads := &readTraceDB{db: nodeSet}
 
-	r.BloomBits = make([][]byte, len(r.SectionIdxList))
+	r.BloomBits = make([][]byte, len(r.SectionIndexList))
 
 	// Verify the proofs
 	var encNumber [10]byte
 	binary.BigEndian.PutUint16(encNumber[:2], uint16(r.BitIdx))
 
-	for i, idx := range r.SectionIdxList {
+	for i, idx := range r.SectionIndexList {
 		binary.BigEndian.PutUint64(encNumber[2:], idx)
 		value, _, err := trie.VerifyProof(r.BloomTrieRoot, encNumber[:], reads)
 		if err != nil {

les/peer.go

@@ -18,7 +18,6 @@
 package les
 
 import (
-	"crypto/ecdsa"
 	"errors"
 	"fmt"
 	"math/big"
@@ -51,7 +50,6 @@ const (
 
 type peer struct {
 	*p2p.Peer
-	pubKey *ecdsa.PublicKey
 
 	rw p2p.MsgReadWriter
 
@@ -80,11 +78,9 @@ type peer struct {
 
 func newPeer(version int, network uint64, p *p2p.Peer, rw p2p.MsgReadWriter) *peer {
 	id := p.ID()
-	pubKey, _ := id.Pubkey()
 
 	return &peer{
 		Peer:        p,
-		pubKey:      pubKey,
 		rw:          rw,
 		version:     version,
 		network:     network,

les/protocol.go

@@ -18,9 +18,7 @@
 package les
 
 import (
-	"bytes"
 	"crypto/ecdsa"
-	"crypto/elliptic"
 	"errors"
 	"fmt"
 	"io"
@@ -30,7 +28,7 @@ import (
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/secp256k1"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
@@ -148,21 +146,20 @@ func (a *announceData) sign(privKey *ecdsa.PrivateKey) {
 }
 
 // checkSignature verifies if the block announcement has a valid signature by the given pubKey
-func (a *announceData) checkSignature(pubKey *ecdsa.PublicKey) error {
+func (a *announceData) checkSignature(id enode.ID) error {
 	var sig []byte
 	if err := a.Update.decode().get("sign", &sig); err != nil {
 		return err
 	}
 	rlp, _ := rlp.EncodeToBytes(announceBlock{a.Hash, a.Number, a.Td})
-	recPubkey, err := secp256k1.RecoverPubkey(crypto.Keccak256(rlp), sig)
+	recPubkey, err := crypto.SigToPub(crypto.Keccak256(rlp), sig)
 	if err != nil {
 		return err
 	}
-	pbytes := elliptic.Marshal(pubKey.Curve, pubKey.X, pubKey.Y)
+	if id == enode.PubkeyToIDV4(recPubkey) {
-	if bytes.Equal(pbytes, recPubkey) {
 		return nil
 	}
-	return errors.New("Wrong signature")
+	return errors.New("wrong signature")
 }
 
 type blockInfo struct {

les/retrieve.go

@@ -217,6 +217,13 @@ func (r *sentReq) stateRequesting() reqStateFn {
 			go r.tryRequest()
 			r.lastReqQueued = true
 			return r.stateRequesting
+		case rpDeliveredInvalid:
+			// if it was the last sent request (set to nil by update) then start a new one
+			if !r.lastReqQueued && r.lastReqSentTo == nil {
+				go r.tryRequest()
+				r.lastReqQueued = true
+			}
+			return r.stateRequesting
 		case rpDeliveredValid:
 			r.stop(nil)
 			return r.stateStopped
@@ -242,7 +249,11 @@ func (r *sentReq) stateNoMorePeers() reqStateFn {
 			r.stop(nil)
 			return r.stateStopped
 		}
+		if r.waiting() {
 			return r.stateNoMorePeers
+		}
+		r.stop(light.ErrNoPeers)
+		return nil
 	case <-r.stopCh:
 		return r.stateStopped
 	}