consensus/clique: Proof of Authority (#3753)

This PR is a prototype implementation of plugable consensus engines and the
Clique PoA protocol ethereum/EIPs#225

2 files changed, 9 insertions, 80 deletions

diff --git a/mobile/geth.go b/mobile/geth.go
index 402f0b680..86034df98 100644
--- a/mobile/geth.go
+++ b/mobile/geth.go
@@ -55,10 +55,6 @@ type NodeConfig struct {
 	// decide if remote peers should be accepted or not.
 	EthereumNetworkID int
 
-	// EthereumChainConfig is the default parameters of the blockchain to use. If no
-	// configuration is specified, it defaults to the main network.
-	EthereumChainConfig *ChainConfig
-
 	// EthereumGenesis is the genesis JSON to use to seed the blockchain with. An
 	// empty genesis state is equivalent to using the mainnet's state.
 	EthereumGenesis string
@@ -84,7 +80,6 @@ var defaultNodeConfig = &NodeConfig{
 	MaxPeers:              25,
 	EthereumEnabled:       true,
 	EthereumNetworkID:     1,
-	EthereumChainConfig:   MainnetChainConfig(),
 	EthereumDatabaseCache: 16,
 }
 
@@ -94,18 +89,6 @@ func NewNodeConfig() *NodeConfig {
 	return &config
 }
 
-// SetMainnet sets up the node for use on the Ethereum mainnet.
-func (cfg *NodeConfig) SetMainnet() {
-	cfg.EthereumGenesis = ""
-	cfg.EthereumChainConfig = MainnetChainConfig()
-}
-
-// SetTestnet sets up the node for use on the Ethereum testnet.
-func (cfg *NodeConfig) SetTestnet() {
-	cfg.EthereumGenesis = TestnetGenesis()
-	cfg.EthereumChainConfig = TestnetChainConfig()
-}
-
 // Node represents a Geth Ethereum node instance.
 type Node struct {
 	node *node.Node
@@ -144,27 +127,19 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) {
 
 	var genesis *core.Genesis
 	if config.EthereumGenesis != "" {
+		// Parse the user supplied genesis spec if not mainnet
 		genesis = new(core.Genesis)
 		if err := json.Unmarshal([]byte(config.EthereumGenesis), genesis); err != nil {
-			return nil, fmt.Errorf("invalid EthereumGenesis: %v", err)
+			return nil, fmt.Errorf("invalid genesis spec: %v", err)
 		}
-	}
-	if config.EthereumChainConfig != nil {
-		if genesis == nil {
-			genesis = core.DefaultGenesisBlock()
-		}
-		genesis.Config = &params.ChainConfig{
-			ChainId:        big.NewInt(config.EthereumChainConfig.ChainID),
-			HomesteadBlock: big.NewInt(config.EthereumChainConfig.HomesteadBlock),
-			DAOForkBlock:   big.NewInt(config.EthereumChainConfig.DAOForkBlock),
-			DAOForkSupport: config.EthereumChainConfig.DAOForkSupport,
-			EIP150Block:    big.NewInt(config.EthereumChainConfig.EIP150Block),
-			EIP150Hash:     config.EthereumChainConfig.EIP150Hash.hash,
-			EIP155Block:    big.NewInt(config.EthereumChainConfig.EIP155Block),
-			EIP158Block:    big.NewInt(config.EthereumChainConfig.EIP158Block),
+		// If we have the testnet, hard code the chain configs too
+		if config.EthereumGenesis == TestnetGenesis() {
+			genesis.Config = params.TestnetChainConfig
+			if config.EthereumNetworkID == 1 {
+				config.EthereumNetworkID = 3
+			}
 		}
 	}
-
 	// Register the Ethereum protocol if requested
 	if config.EthereumEnabled {
 		ethConf := &eth.Config{
@@ -173,7 +148,7 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) {
 			DatabaseCache:      config.EthereumDatabaseCache,
 			NetworkId:          config.EthereumNetworkID,
 			GasPrice:           new(big.Int).SetUint64(20 * params.Shannon),
-			GpoBlocks:          5,
+			GpoBlocks:          10,
 			GpoPercentile:      50,
 			EthashCacheDir:     "ethash",
 			EthashCachesInMem:  2,
diff --git a/mobile/params.go b/mobile/params.go
index 6ca0c1b3a..9c58a90ab 100644
--- a/mobile/params.go
+++ b/mobile/params.go
@@ -26,40 +26,12 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 )
 
-// MainnetChainConfig returns the chain configurations for the main Ethereum network.
-func MainnetChainConfig() *ChainConfig {
-	return &ChainConfig{
-		ChainID:        params.MainNetChainID.Int64(),
-		HomesteadBlock: params.MainNetHomesteadBlock.Int64(),
-		DAOForkBlock:   params.MainNetDAOForkBlock.Int64(),
-		DAOForkSupport: true,
-		EIP150Block:    params.MainNetHomesteadGasRepriceBlock.Int64(),
-		EIP150Hash:     Hash{params.MainNetHomesteadGasRepriceHash},
-		EIP155Block:    params.MainNetSpuriousDragon.Int64(),
-		EIP158Block:    params.MainNetSpuriousDragon.Int64(),
-	}
-}
-
 // MainnetGenesis returns the JSON spec to use for the main Ethereum network. It
 // is actually empty since that defaults to the hard coded binary genesis block.
 func MainnetGenesis() string {
 	return ""
 }
 
-// TestnetChainConfig returns the chain configurations for the Ethereum test network.
-func TestnetChainConfig() *ChainConfig {
-	return &ChainConfig{
-		ChainID:        params.TestNetChainID.Int64(),
-		HomesteadBlock: params.TestNetHomesteadBlock.Int64(),
-		DAOForkBlock:   0,
-		DAOForkSupport: false,
-		EIP150Block:    params.TestNetHomesteadGasRepriceBlock.Int64(),
-		EIP150Hash:     Hash{params.TestNetHomesteadGasRepriceHash},
-		EIP155Block:    params.TestNetSpuriousDragon.Int64(),
-		EIP158Block:    params.TestNetSpuriousDragon.Int64(),
-	}
-}
-
 // TestnetGenesis returns the JSON spec to use for the Ethereum test network.
 func TestnetGenesis() string {
 	enc, err := json.Marshal(core.DefaultTestnetGenesisBlock())
@@ -69,24 +41,6 @@ func TestnetGenesis() string {
 	return string(enc)
 }
 
-// ChainConfig is the core config which determines the blockchain settings.
-type ChainConfig struct {
-	ChainID        int64 // Chain ID for replay protection
-	HomesteadBlock int64 // Homestead switch block
-	DAOForkBlock   int64 // TheDAO hard-fork switch block
-	DAOForkSupport bool  // Whether the nodes supports or opposes the DAO hard-fork
-	EIP150Block    int64 // Homestead gas reprice switch block
-	EIP150Hash     Hash  // Homestead gas reprice switch block hash
-	EIP155Block    int64 // Replay protection switch block
-	EIP158Block    int64 // Empty account pruning switch block
-}
-
-// NewChainConfig creates a new chain configuration that transitions immediately
-// to homestead and has no notion of the DAO fork (ideal for a private network).
-func NewChainConfig() *ChainConfig {
-	return new(ChainConfig)
-}
-
 // FoundationBootnodes returns the enode URLs of the P2P bootstrap nodes operated
 // by the foundation running the V5 discovery protocol.
 func FoundationBootnodes() *Enodes {