Documentation
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Overview ¶
Package forkid implements EIP-2124 (https://eips.ethereum.org/EIPS/eip-2124).
Index ¶
Constants ¶
This section is empty.
Variables ¶
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var ( // ErrRemoteStale is returned by the validator if a remote fork checksum is a // subset of our already applied forks, but the announced next fork block is // not on our already passed chain. ErrRemoteStale = errors.New("remote needs update") // ErrLocalIncompatibleOrStale is returned by the validator if a remote fork // checksum does not match any local checksum variation, signalling that the // two chains have diverged in the past at some point (possibly at genesis). ErrLocalIncompatibleOrStale = errors.New("local incompatible or needs update") )
Functions ¶
This section is empty.
Types ¶
type Blockchain ¶ added in v1.9.15
type Blockchain interface {
// Config retrieves the chain's fork configuration.
Config() *params.ChainConfig
// Genesis retrieves the chain's genesis block.
Genesis() *types.Block
// CurrentHeader retrieves the current head header of the canonical chain.
CurrentHeader() *types.Header
}
Blockchain defines all necessary method to build a forkID.
type Filter ¶ added in v1.9.7
Filter is a fork id filter to validate a remotely advertised ID.
func NewFilter ¶
func NewFilter(chain Blockchain) Filter
NewFilter creates a filter that returns if a fork ID should be rejected or not based on the local chain's status.
func NewStaticFilter ¶ added in v1.9.7
func NewStaticFilter(config *params.ChainConfig, genesis *types.Block) Filter
NewStaticFilter creates a filter at block zero.
type ID ¶
type ID struct {
Hash [4]byte // CRC32 checksum of the genesis block and passed fork block numbers
Next uint64 // Block number of the next upcoming fork, or 0 if no forks are known
}
ID is a fork identifier as defined by EIP-2124.
func NewID ¶
NewID calculates the Ethereum fork ID from the chain config, genesis hash, head and time.
func NewIDWithChain ¶ added in v1.10.0
func NewIDWithChain(chain Blockchain) ID
NewIDWithChain calculates the Ethereum fork ID from an existing chain instance.
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