params

Documentation

Index

• Constants
• Variables
• func DAODrainList() []common.Address
• func VersionWithCommit(gitCommit string) string
• type ChainConfig
  • func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError
  • func (c *ChainConfig) GasTable(num *big.Int) GasTable
  • func (c *ChainConfig) Rules(num *big.Int) Rules
  • func (c *ChainConfig) String() string
• type CliqueConfig
  • func (c *CliqueConfig) String() string
• type ConfigCompatError
  • func (err *ConfigCompatError) Error() string
• type DposConfig
  • func (c *DposConfig) String() string
• type EthashConfig
  • func (c *EthashConfig) String() string
• type GasTable
• type Rules

Constants

const (
	// These are the multipliers for won denominations.
	// Example: To get the wei value of an amount in 'douglas', use
	//
	//    new(big.Int).Mul(value, big.NewInt(params.Douglas))
	//
	Wei      = 1
	Ada      = 1e3
	Babbage  = 1e6
	Shannon  = 1e9
	Szabo    = 1e12
	Finney   = 1e15
	WON      = 1e18
	Einstein = 1e21
	Douglas  = 1e42
)

const (
	GasLimitBoundDivisor uint64 = 1024    // The bound divisor of the gas limit, used in update calculations.
	MinGasLimit          uint64 = 20      // Minimum the gas limit may ever be.
	GenesisGasLimit      uint64 = 4712388 // Gas limit of the Genesis block.

	MaximumExtraDataSize  uint64 = 32  // Maximum size extra data may be after Genesis.
	ExpByteGas            uint64 = 2   // Times ceil(log256(exponent)) for the EXP instruction.
	SloadGas              uint64 = 5   // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
	CallValueTransferGas  uint64 = 5   // Paid for CALL when the value transfer is non-zero.
	CallNewAccountGas     uint64 = 5   // Paid for CALL when the destination address didn't exist prior.
	TxGas                 uint64 = 210 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
	TxGasContractCreation uint64 = 5   // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
	TxDataZeroGas         uint64 = 2   // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
	QuadCoeffDiv          uint64 = 512 // Divisor for the quadratic particle of the memory cost equation.
	SstoreSetGas          uint64 = 2   // Once per SLOAD operation.
	LogDataGas            uint64 = 2   // Per byte in a LOG* operation's data.
	CallStipend           uint64 = 2   // Free gas given at beginning of call.

	Sha3Gas          uint64 = 3     // Once per SHA3 operation.
	Sha3WordGas      uint64 = 2     // Once per word of the SHA3 operation's data.
	SstoreResetGas   uint64 = 5     // Once per SSTORE operation if the zeroness changes from zero.
	SstoreClearGas   uint64 = 5     // Once per SSTORE operation if the zeroness doesn't change.
	SstoreRefundGas  uint64 = 5     // Once per SSTORE operation if the zeroness changes to zero.
	JumpdestGas      uint64 = 1     // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
	EpochDuration    uint64 = 30000 // Duration between proof-of-work epochs.
	CallGas          uint64 = 2     // Once per CALL operation & message call transaction.
	CreateDataGas    uint64 = 2     //
	CallCreateDepth  uint64 = 1024  // Maximum depth of call/create stack.
	ExpGas           uint64 = 2     // Once per EXP instruction
	LogGas           uint64 = 3     // Per LOG* operation.
	CopyGas          uint64 = 3     //
	StackLimit       uint64 = 1024  // Maximum size of VM stack allowed.
	TierStepGas      uint64 = 0     // Once per operation, for a selection of them.
	LogTopicGas      uint64 = 3     // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
	CreateGas        uint64 = 2     // Once per CREATE operation & contract-creation transaction.
	SuicideRefundGas uint64 = 2     // Refunded following a suicide operation.
	MemoryGas        uint64 = 3     // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL.
	TxDataNonZeroGas uint64 = 6     // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions.

	MaxCodeSize = 24576 // Maximum bytecode to permit for a contract

	EcrecoverGas            uint64 = 3  // Elliptic curve sender recovery gas price
	Sha256BaseGas           uint64 = 3  // Base price for a SHA256 operation
	Sha256PerWordGas        uint64 = 2  // Per-word price for a SHA256 operation
	Ripemd160BaseGas        uint64 = 6  // Base price for a RIPEMD160 operation
	Ripemd160PerWordGas     uint64 = 2  // Per-word price for a RIPEMD160 operation
	IdentityBaseGas         uint64 = 2  // Base price for a data copy operation
	IdentityPerWordGas      uint64 = 3  // Per-work price for a data copy operation
	ModExpQuadCoeffDiv      uint64 = 20 // Divisor for the quadratic particle of the big int modular exponentiation
	Bn256AddGas             uint64 = 1  // Gas needed for an elliptic curve addition
	Bn256ScalarMulGas       uint64 = 1  // Gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGas     uint64 = 1  // Base price for an elliptic curve pairing check
	Bn256PairingPerPointGas uint64 = 2  // Per-point price for an elliptic curve pairing check
)

const (
	VersionMajor = 1          // Major version component of the current release
	VersionMinor = 8          // Minor version component of the current release
	VersionPatch = 6          // Patch version component of the current release
	VersionMeta  = "unstable" // Version metadata to append to the version string
)

const (
	// BloomBitsBlocks is the number of blocks a single bloom bit section vector
	// contains.
	BloomBitsBlocks uint64 = 4096
)

Variables

var (
	MainnetGenesisHash = common.HexToHash("0x7a027e2464b52d43bb8bc0145484cf866bdab41dfdd86f69bde335211ff80601") // Mainnet genesis hash to enforce below configs on
	TestnetGenesisHash = common.HexToHash("0x038876a973c23f5987028029fc0906a970b785b8879723e9b36170654d55fa7d") // Testnet genesis hash to enforce below configs on
	BetanetGenesisHash = common.HexToHash("0xe10b936cc354fc014aba0bc576a8eb407fabbeebf25df53f1b61a1b6d8f18138") // Betanet genesis hash to enforce below configs on TODO FIX
)

var (
	// MainnetChainConfig is the chain parameters to run a node on the main network.
	MainnetChainConfig = &ChainConfig{
		ChainId:               big.NewInt(1),
		CheckForTokenKycBlock: big.NewInt(233000),

		Clique: &CliqueConfig{Period: 3, Epoch: 30000},
	}

	// TestnetChainConfig contains the chain parameters to run a node on the Ropsten test network.
	TestnetChainConfig = &ChainConfig{

		ChainId: big.NewInt(2),

		Clique: &CliqueConfig{Period: 3, Epoch: 30000},
	}

	DevChainConfig = &ChainConfig{
		ChainId: big.NewInt(3),

		Clique: &CliqueConfig{Period: 0, Epoch: 30000},
	}

	TestChainConfig = &ChainConfig{
		ChainId: big.NewInt(3),

		Clique: &CliqueConfig{Period: 0, Epoch: 30000},
	}

	// BetanetChainConfig contains the chain parameters to run a node on the Betanet test network.
	BetanetChainConfig = &ChainConfig{
		ChainId: big.NewInt(20180902),

		Dpos: &DposConfig{Period: 1, Epoch: 30000,
			MaxDposConfirm: 1024, ProducerRepetions: 12},
	}
)

var (
	// GasTableHomestead contain the gas prices for
	// the homestead phase.
	GasTableHomestead = GasTable{
		ExtcodeSize: 2,
		ExtcodeCopy: 2,
		Balance:     2,
		SLoad:       5,
		Calls:       2,
		Suicide:     0,
		ExpByte:     2,
	}

	// GasTableHomestead contain the gas re-prices for
	// the homestead phase.
	GasTableEIP150 = GasTable{
		ExtcodeSize: 2,
		ExtcodeCopy: 2,
		Balance:     2,
		SLoad:       5,
		Calls:       2,
		Suicide:     0,
		ExpByte:     2,

		CreateBySuicide: 5,
	}

	GasTableEIP158 = GasTable{
		ExtcodeSize: 2,
		ExtcodeCopy: 2,
		Balance:     2,
		SLoad:       5,
		Calls:       2,
		Suicide:     0,
		ExpByte:     2,

		CreateBySuicide: 5,
	}

	GasPrice = 10 * Wei
)

var (
	DifficultyBoundDivisor = big.NewInt(2048)   // The bound divisor of the difficulty, used in the update calculations.
	GenesisDifficulty      = big.NewInt(131072) // Difficulty of the Genesis block.
	MinimumDifficulty      = big.NewInt(131072) // The minimum that the difficulty may ever be.
	DurationLimit          = big.NewInt(13)     // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
)

var BetanetBootnodes = []string{
	"enode://3434564bbc92c6cbd376788b8050c8c6cf656b9dc211c0594189fbb9975125732e06dc66b2a6da131ea8e6f1bc5e7a17eef22d899f6586d81d18b74a868c1dea@192.168.1.41:30304",
}

BetanetBootnodes are the enode URLs of the P2P bootstrap nodes running on the Betanet test network.

var DAOForkBlockExtra = common.FromHex("0x64616f2d686172642d666f726b")

DAOForkBlockExtra is the block header extra-data field to set for the DAO fork point and a number of consecutive blocks to allow fast/light syncers to correctly pick the side they want ("dao-hard-fork").

var DAOForkExtraRange = big.NewInt(10)

DAOForkExtraRange is the number of consecutive blocks from the DAO fork point to override the extra-data in to prevent no-fork attacks.

var DAORefundContract = common.HexToAddress("0xbf4ed7b27f1d666546e30d74d50d173d20bca754")

DAORefundContract is the address of the refund contract to send DAO balances to.

var DiscoveryV5Bootnodes = []string{
	"enode://19b78a841f81bbd2e928827b9efb68288db9374ca83ba2d978b1d95cf5b4624b2627034598f7ec67fc1306cbd34fd7fae443005b0fc83ac8f3f891d998471aa5@35.203.113.254:30331",
}

DiscoveryV5Bootnodes are the enode URLs of the P2P bootstrap nodes for the experimental RLPx v5 topic-discovery network.

var MainnetBootnodes = []string{

	"enode://ad336b0e0878c66a368beea8361ca74b5382548c10d1e205e278f72d7cdd5005963f8eb9d7ef234f7bd636516523e6031ab478fa9287926720a84f7b3f13f6c3@104.196.238.56:30331",

	"enode://19b78a841f81bbd2e928827b9efb68288db9374ca83ba2d978b1d95cf5b4624b2627034598f7ec67fc1306cbd34fd7fae443005b0fc83ac8f3f891d998471aa5@35.203.113.254:30331",
}

MainnetBootnodes are the enode URLs of the P2P bootstrap nodes running on the main WorldOpenNetwork network.

var (
	TargetGasLimit uint64 = GenesisGasLimit // The artificial target
)

var TestnetBootnodes = []string{
	"enode://2f2a4f853b9799b6faed8653a586c7b6bc4f1906e54462d076acc9825ae2c0f383ad3d867f7af4eb53a5ec4f582b5836882b1af81e66ecf7b69a2187362232ee@35.236.95.86:30331",
}

TestnetBootnodes are the enode URLs of the P2P bootstrap nodes running on the won alpha test network.

var Version = func() string {
	v := fmt.Sprintf("%d.%d.%d", VersionMajor, VersionMinor, VersionPatch)
	if VersionMeta != "" {
		v += "-" + VersionMeta
	}
	return v
}()

Version holds the textual version string.

Functions

func DAODrainList

func DAODrainList() []common.Address

DAODrainList is the list of accounts whose full balances will be moved into a refund contract at the beginning of the dao-fork block.

func VersionWithCommit

func VersionWithCommit(gitCommit string) string

Types

type ChainConfig

type ChainConfig struct {
	ChainId *big.Int `json:"chainId"` // Chain id identifies the current chain and is used for replay protection

	CheckForTokenKycBlock *big.Int `json:"checkforTokonKycBlock,omitempty"`
	// Various consensus engines
	Ethash *EthashConfig `json:"ethash,omitempty"`
	Clique *CliqueConfig `json:"clique,omitempty"`
	Dpos   *DposConfig   `json:"dpos,omitempty"`
}

ChainConfig is the core config which determines the blockchain settings.

ChainConfig is stored in the database on a per block basis. This means that any network, identified by its genesis block, can have its own set of configuration options.

func (*ChainConfig) CheckCompatible

func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError

CheckCompatible checks whether scheduled fork transitions have been imported with a mismatching chain configuration.

func (*ChainConfig) GasTable

func (c *ChainConfig) GasTable(num *big.Int) GasTable

GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).

The returned GasTable's fields shouldn't, under any circumstances, be changed.

func (*ChainConfig) Rules

func (c *ChainConfig) Rules(num *big.Int) Rules

func (*ChainConfig) String

func (c *ChainConfig) String() string

String implements the fmt.Stringer interface.

type CliqueConfig

type CliqueConfig struct {
	Period uint64 `json:"period"` // Number of seconds between blocks to enforce
	Epoch  uint64 `json:"epoch"`  // Epoch length to reset votes and checkpoint
}

CliqueConfig is the consensus engine configs for proof-of-authority based sealing.

func (*CliqueConfig) String

func (c *CliqueConfig) String() string

String implements the stringer interface, returning the consensus engine details.

type ConfigCompatError

type ConfigCompatError struct {
	What string
	// block numbers of the stored and new configurations
	StoredConfig, NewConfig *big.Int
	// the block number to which the local chain must be rewound to correct the error
	RewindTo uint64
}

ConfigCompatError is raised if the locally-stored blockchain is initialised with a ChainConfig that would alter the past.

func (*ConfigCompatError) Error

func (err *ConfigCompatError) Error() string

type DposConfig

type DposConfig struct {
	Period            uint64 `json:"period"` // Number of seconds between blocks to enforce
	Epoch             uint64 `json:"epoch"`  // Epoch length to reset votes and checkpoint
	MaxDposConfirm    uint64 `json:"maxDposConfirm"`
	ProducerRepetions uint64 `json:"producerRepetions"`
}

func (*DposConfig) String

func (c *DposConfig) String() string

String implements the stringer interface, returning the consensus engine details.

type EthashConfig

type EthashConfig struct{}

EthashConfig is the consensus engine configs for proof-of-work based sealing.

func (*EthashConfig) String

func (c *EthashConfig) String() string

String implements the stringer interface, returning the consensus engine details.

type GasTable

type GasTable struct {
	ExtcodeSize uint64
	ExtcodeCopy uint64
	Balance     uint64
	SLoad       uint64
	Calls       uint64
	Suicide     uint64

	ExpByte uint64

	// CreateBySuicide occurs when the
	// refunded account is one that does
	// not exist. This logic is similar
	// to call. May be left nil. Nil means
	// not charged.
	CreateBySuicide uint64
}

type Rules

type Rules struct {
	ChainId *big.Int
}

Rules wraps ChainConfig and is merely syntatic sugar or can be used for functions that do not have or require information about the block.

Rules is a one time interface meaning that it shouldn't be used in between transition phases.