params

Documentation

Index

• Constants
• Variables
• func VersionWithCommit(gitCommit string) string
• type ChainConfig
  • func (c *ChainConfig) Rules(num *big.Int) Rules
  • func (c *ChainConfig) String() string
• type ConfigCompatError
  • func (err *ConfigCompatError) Error() string
• type DpovpConfig
• type GasTable
• type Rules

Constants

const (
	// These are the multipliers for network 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
	Love     = 1e18
	Einstein = 1e21
	Douglas  = 1e42
)

const (
	GasLimitBoundDivisor uint64 = 1024    // The bound divisor of the gas limit, used in update calculations.
	MinGasLimit          uint64 = 5000    // 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 = 10    // Times ceil(log256(exponent)) for the EXP instruction.
	SloadGas              uint64 = 50    // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
	CallValueTransferGas  uint64 = 9000  // Paid for CALL when the value transfer is non-zero.
	CallNewAccountGas     uint64 = 25000 // Paid for CALL when the destination address didn't exist prior.
	TxGas                 uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
	TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
	TxDataZeroGas         uint64 = 4     // 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 = 20000 // Once per SLOAD operation.
	LogDataGas            uint64 = 8     // Per byte in a LOG* operation's data.
	CallStipend           uint64 = 2300  // Free gas given at beginning of call.

	Sha3Gas          uint64 = 30    // Once per SHA3 operation.
	Sha3WordGas      uint64 = 6     // Once per word of the SHA3 operation's data.
	SstoreResetGas   uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.
	SstoreClearGas   uint64 = 5000  // Once per SSTORE operation if the zeroness doesn't change.
	SstoreRefundGas  uint64 = 15000 // 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 = 40    // Once per CALL operation & message call transaction.
	CreateDataGas    uint64 = 200   //
	CallCreateDepth  uint64 = 1024  // Maximum depth of call/create stack.
	ExpGas           uint64 = 10    // Once per EXP instruction
	LogGas           uint64 = 375   // 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 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
	CreateGas        uint64 = 32000 // Once per CREATE operation & contract-creation transaction.
	SuicideRefundGas uint64 = 24000 // 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 = 68    // 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 = 3000   // Elliptic curve sender recovery gas price
	Sha256BaseGas           uint64 = 60     // Base price for a SHA256 operation
	Sha256PerWordGas        uint64 = 12     // Per-word price for a SHA256 operation
	Ripemd160BaseGas        uint64 = 600    // Base price for a RIPEMD160 operation
	Ripemd160PerWordGas     uint64 = 120    // Per-word price for a RIPEMD160 operation
	IdentityBaseGas         uint64 = 15     // 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 = 500    // Gas needed for an elliptic curve addition
	Bn256ScalarMulGas       uint64 = 40000  // Gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGas     uint64 = 100000 // Base price for an elliptic curve pairing check
	Bn256PairingPerPointGas uint64 = 80000  // Per-point price for an elliptic curve pairing check
)

const (
	VersionMajor = 0      // Major version component of the current release
	VersionMinor = 0      // Minor version component of the current release
	VersionPatch = 9      // Patch version component of the current release
	VersionMeta  = "beta" // 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 (
	// TODO
	MainnetGenesisHash = common.HexToHash("0xff4a7c7beda3c3eb3fb6eb2fd90f75db88f1ad0894ec773db43028787121691e") // Mainnet genesis hash to enforce below configs on
	TestnetGenesisHash = common.HexToHash("0x682c33863395ea58a7e08c63b0a655ffcdc707d1c03c8dda791f3642ba441a96") // Testnet genesis hash to enforce below configs on
)

var (
	// MainnetChainConfig is the chain parameters to run a node on the main network.
	MainnetChainConfig = &ChainConfig{
		ChainId: big.NewInt(20180627),
		Dpovp:   &DpovpConfig{Timeout: 10 * 1000, Sleeptime: 3 * 1000},
	}

	// TestnetChainConfig contains the chain parameters to run a node on the Test network.
	TestnetChainConfig = &ChainConfig{
		ChainId: big.NewInt(100),
		Dpovp:   &DpovpConfig{Timeout: 10 * 1000, Sleeptime: 3 * 1000},
	}

	// AllLovehashProtocolChanges contains every protocol change (EIPs) introduced
	// and accepted by the LoveBlock core developers into the Lovehash consensus.
	//
	// This configuration is intentionally not using keyed fields to force anyone
	// adding flags to the config to also have to set these fields.
	// AllLovehashProtocolChanges = &ChainConfig{big.NewInt(1337), &DpovpConfig{Timeout: 10 * 1000, Sleeptime: 3 * 1000}}
	AllLovehashProtocolChanges = &ChainConfig{big.NewInt(20180627), &DpovpConfig{Timeout: 10 * 1000, Sleeptime: 3 * 1000}}

	TestChainConfig = &ChainConfig{big.NewInt(1), new(DpovpConfig)}
)

var (
	DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations.
	GenesisDifficulty      = big.NewInt(0)    // Difficulty of the Genesis block.
	MinimumDifficulty      = big.NewInt(0)    // 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 (
	DefaultGasTable = GasTable{
		ExtcodeSize: 700,
		ExtcodeCopy: 700,
		Balance:     400,
		SLoad:       200,
		Calls:       700,
		Suicide:     5000,
		ExpByte:     50,

		CreateBySuicide: 25000,
	}
)

var DiscoveryV5Bootnodes = []string{
	"enode://7b1cb5d049aa08ac6e7be442d44fe0c9d3e2404b3a6d71d3ebe14d5aa961bf0d232571c8d64dd0ceeff37208312f1591ff9b2bab8030b2dbb03b588e41f36ba9@149.28.68.93:50301",
}

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

var MainnetBootnodes = []string{

	"enode://948cee7ebfbb76f425344e77314dabd7146e6f14d1b81b7d10485cb120f8d7cc04687a193a4500a014fbd26ed9c6cb8c52b1d08b13c1c27d0574cb73c22517c6@149.28.68.93:60603",

	"enode://46880c2bc68d7fcf6819d04bcbc626caa170fad970a3a2158dc5b6c92244ea786c8c41e9fa206194a9c96b579f28e903d13e0f057cf642dfc3f49028a0bfe419@149.28.68.93:60000",
}

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

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

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 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

	// Various consensus engines
	Dpovp *DpovpConfig `json:"dpovp,omitempty"` // sman for dpovp
}

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) Rules

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

func (*ChainConfig) String

func (c *ChainConfig) String() string

String implements the fmt.Stringer interface.

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 DpovpConfig

type DpovpConfig struct {
	Timeout   int64 `json:"Timeout"`   // Number of timeout between blocks to produce millsecond
	Sleeptime int64 `json:"Sleeptime"` // Time of one block is produced and before ohter node begin produce another block millsecond
}

sman DpovpConfig is the consensus engine configs for dpos

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.