les

package
Version: v1.10.6 Latest Latest
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Published: Jul 22, 2021 License: GPL-3.0 Imports: 66 Imported by: 267

Documentation

Overview

Package les implements the Light Ethereum Subprotocol.

Index

Constants

View Source
const (
	MsgBlockHeaders = iota
	MsgBlockBodies
	MsgCode
	MsgReceipts
	MsgProofsV2
	MsgHelperTrieProofs
	MsgTxStatus
)
View Source
const (
	NetworkId          = 1
	ProtocolMaxMsgSize = 10 * 1024 * 1024 // Maximum cap on the size of a protocol message

)
View Source
const (
	// Protocol messages inherited from LPV1
	StatusMsg          = 0x00
	AnnounceMsg        = 0x01
	GetBlockHeadersMsg = 0x02
	BlockHeadersMsg    = 0x03
	GetBlockBodiesMsg  = 0x04
	BlockBodiesMsg     = 0x05
	GetReceiptsMsg     = 0x06
	ReceiptsMsg        = 0x07
	GetCodeMsg         = 0x0a
	CodeMsg            = 0x0b
	// Protocol messages introduced in LPV2
	GetProofsV2Msg         = 0x0f
	ProofsV2Msg            = 0x10
	GetHelperTrieProofsMsg = 0x11
	HelperTrieProofsMsg    = 0x12
	SendTxV2Msg            = 0x13
	GetTxStatusMsg         = 0x14
	TxStatusMsg            = 0x15
	// Protocol messages introduced in LPV3
	StopMsg   = 0x16
	ResumeMsg = 0x17
)

les protocol message codes

View Source
const (
	ErrMsgTooLarge = iota
	ErrDecode
	ErrInvalidMsgCode
	ErrProtocolVersionMismatch
	ErrNetworkIdMismatch
	ErrGenesisBlockMismatch
	ErrNoStatusMsg
	ErrExtraStatusMsg
	ErrSuspendedPeer
	ErrUselessPeer
	ErrRequestRejected
	ErrUnexpectedResponse
	ErrInvalidResponse
	ErrTooManyTimeouts
	ErrMissingKey
	ErrForkIDRejected
)
View Source
const (
	MaxHeaderFetch           = 192 // Amount of block headers to be fetched per retrieval request
	MaxBodyFetch             = 32  // Amount of block bodies to be fetched per retrieval request
	MaxReceiptFetch          = 128 // Amount of transaction receipts to allow fetching per request
	MaxCodeFetch             = 64  // Amount of contract codes to allow fetching per request
	MaxProofsFetch           = 64  // Amount of merkle proofs to be fetched per retrieval request
	MaxHelperTrieProofsFetch = 64  // Amount of helper tries to be fetched per retrieval request
	MaxTxSend                = 64  // Amount of transactions to be send per request
	MaxTxStatus              = 256 // Amount of transactions to queried per request
)

Variables

View Source
var (
	ClientProtocolVersions    = []uint{lpv2, lpv3, lpv4}
	ServerProtocolVersions    = []uint{lpv2, lpv3, lpv4}
	AdvertiseProtocolVersions = []uint{lpv2} // clients are searching for the first advertised protocol in the list
)

Supported versions of the les protocol (first is primary)

View Source
var Les3 = map[uint64]RequestType{
	GetBlockHeadersMsg: {
		Name:             "block header request",
		MaxCount:         MaxHeaderFetch,
		InPacketsMeter:   miscInHeaderPacketsMeter,
		InTrafficMeter:   miscInHeaderTrafficMeter,
		OutPacketsMeter:  miscOutHeaderPacketsMeter,
		OutTrafficMeter:  miscOutHeaderTrafficMeter,
		ServingTimeMeter: miscServingTimeHeaderTimer,
		Handle:           handleGetBlockHeaders,
	},
	GetBlockBodiesMsg: {
		Name:             "block bodies request",
		MaxCount:         MaxBodyFetch,
		InPacketsMeter:   miscInBodyPacketsMeter,
		InTrafficMeter:   miscInBodyTrafficMeter,
		OutPacketsMeter:  miscOutBodyPacketsMeter,
		OutTrafficMeter:  miscOutBodyTrafficMeter,
		ServingTimeMeter: miscServingTimeBodyTimer,
		Handle:           handleGetBlockBodies,
	},
	GetCodeMsg: {
		Name:             "code request",
		MaxCount:         MaxCodeFetch,
		InPacketsMeter:   miscInCodePacketsMeter,
		InTrafficMeter:   miscInCodeTrafficMeter,
		OutPacketsMeter:  miscOutCodePacketsMeter,
		OutTrafficMeter:  miscOutCodeTrafficMeter,
		ServingTimeMeter: miscServingTimeCodeTimer,
		Handle:           handleGetCode,
	},
	GetReceiptsMsg: {
		Name:             "receipts request",
		MaxCount:         MaxReceiptFetch,
		InPacketsMeter:   miscInReceiptPacketsMeter,
		InTrafficMeter:   miscInReceiptTrafficMeter,
		OutPacketsMeter:  miscOutReceiptPacketsMeter,
		OutTrafficMeter:  miscOutReceiptTrafficMeter,
		ServingTimeMeter: miscServingTimeReceiptTimer,
		Handle:           handleGetReceipts,
	},
	GetProofsV2Msg: {
		Name:             "les/2 proofs request",
		MaxCount:         MaxProofsFetch,
		InPacketsMeter:   miscInTrieProofPacketsMeter,
		InTrafficMeter:   miscInTrieProofTrafficMeter,
		OutPacketsMeter:  miscOutTrieProofPacketsMeter,
		OutTrafficMeter:  miscOutTrieProofTrafficMeter,
		ServingTimeMeter: miscServingTimeTrieProofTimer,
		Handle:           handleGetProofs,
	},
	GetHelperTrieProofsMsg: {
		Name:             "helper trie proof request",
		MaxCount:         MaxHelperTrieProofsFetch,
		InPacketsMeter:   miscInHelperTriePacketsMeter,
		InTrafficMeter:   miscInHelperTrieTrafficMeter,
		OutPacketsMeter:  miscOutHelperTriePacketsMeter,
		OutTrafficMeter:  miscOutHelperTrieTrafficMeter,
		ServingTimeMeter: miscServingTimeHelperTrieTimer,
		Handle:           handleGetHelperTrieProofs,
	},
	SendTxV2Msg: {
		Name:             "new transactions",
		MaxCount:         MaxTxSend,
		InPacketsMeter:   miscInTxsPacketsMeter,
		InTrafficMeter:   miscInTxsTrafficMeter,
		OutPacketsMeter:  miscOutTxsPacketsMeter,
		OutTrafficMeter:  miscOutTxsTrafficMeter,
		ServingTimeMeter: miscServingTimeTxTimer,
		Handle:           handleSendTx,
	},
	GetTxStatusMsg: {
		Name:             "transaction status query request",
		MaxCount:         MaxTxStatus,
		InPacketsMeter:   miscInTxStatusPacketsMeter,
		InTrafficMeter:   miscInTxStatusTrafficMeter,
		OutPacketsMeter:  miscOutTxStatusPacketsMeter,
		OutTrafficMeter:  miscOutTxStatusTrafficMeter,
		ServingTimeMeter: miscServingTimeTxStatusTimer,
		Handle:           handleGetTxStatus,
	},
}

Les3 contains the request types supported by les/2 and les/3

View Source
var ProtocolLengths = map[uint]uint64{/* contains filtered or unexported fields */}

Number of implemented message corresponding to different protocol versions.

Functions

func NewFuzzerPeer

func NewFuzzerPeer(version int) (p *clientPeer, closer func())

NewFuzzerPeer creates a client peer for test purposes, and also returns a function to close the peer: this is needed to avoid goroutine leaks in the exec queue.

Types

type BlockRequest

type BlockRequest light.BlockRequest

BlockRequest is the ODR request type for block bodies

func (*BlockRequest) CanSend

func (r *BlockRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*BlockRequest) GetCost

func (r *BlockRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*BlockRequest) Request

func (r *BlockRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*BlockRequest) Validate

func (r *BlockRequest) Validate(db ethdb.Database, msg *Msg) error

Valid processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

type BloomReq

type BloomReq struct {
	BloomTrieNum, BitIdx, SectionIndex, FromLevel uint64
}

type BloomRequest

type BloomRequest light.BloomRequest

ODR request type for requesting headers by Canonical Hash Trie, see LesOdrRequest interface

func (*BloomRequest) CanSend

func (r *BloomRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*BloomRequest) GetCost

func (r *BloomRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*BloomRequest) Request

func (r *BloomRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*BloomRequest) Validate

func (r *BloomRequest) Validate(db ethdb.Database, msg *Msg) error

Valid processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

type ChtRequest

type ChtRequest light.ChtRequest

ODR request type for requesting headers by Canonical Hash Trie, see LesOdrRequest interface

func (*ChtRequest) CanSend

func (r *ChtRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*ChtRequest) GetCost

func (r *ChtRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*ChtRequest) Request

func (r *ChtRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*ChtRequest) Validate

func (r *ChtRequest) Validate(db ethdb.Database, msg *Msg) error

Valid processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

type CodeData

type CodeData []struct {
	Value []byte
}

CodeData is the network response packet for a node data retrieval.

type CodeReq

type CodeReq struct {
	BHash  common.Hash
	AccKey []byte
}

type CodeRequest

type CodeRequest light.CodeRequest

ODR request type for node data (used for retrieving contract code), see LesOdrRequest interface

func (*CodeRequest) CanSend

func (r *CodeRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*CodeRequest) GetCost

func (r *CodeRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*CodeRequest) Request

func (r *CodeRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*CodeRequest) Validate

func (r *CodeRequest) Validate(db ethdb.Database, msg *Msg) error

Valid processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

type Decoder

type Decoder interface {
	Decode(val interface{}) error
}

Decoder is implemented by the messages passed to the handler functions

type GetBlockBodiesPacket

type GetBlockBodiesPacket struct {
	ReqID  uint64
	Hashes []common.Hash
}

GetBlockBodiesPacket represents a block body request

type GetBlockHeadersData

type GetBlockHeadersData struct {
	Origin  hashOrNumber // Block from which to retrieve headers
	Amount  uint64       // Maximum number of headers to retrieve
	Skip    uint64       // Blocks to skip between consecutive headers
	Reverse bool         // Query direction (false = rising towards latest, true = falling towards genesis)
}

GetBlockHeadersData represents a block header query (the request ID is not included)

type GetBlockHeadersPacket

type GetBlockHeadersPacket struct {
	ReqID uint64
	Query GetBlockHeadersData
}

GetBlockHeadersPacket represents a block header request

type GetCodePacket

type GetCodePacket struct {
	ReqID uint64
	Reqs  []CodeReq
}

GetCodePacket represents a contract code request

type GetHelperTrieProofsPacket

type GetHelperTrieProofsPacket struct {
	ReqID uint64
	Reqs  []HelperTrieReq
}

GetHelperTrieProofsPacket represents a helper trie proof request

type GetProofsPacket

type GetProofsPacket struct {
	ReqID uint64
	Reqs  []ProofReq
}

GetProofsPacket represents a proof request

type GetReceiptsPacket

type GetReceiptsPacket struct {
	ReqID  uint64
	Hashes []common.Hash
}

GetReceiptsPacket represents a block receipts request

type GetTxStatusPacket

type GetTxStatusPacket struct {
	ReqID  uint64
	Hashes []common.Hash
}

GetTxStatusPacket represents a transaction status query

type HelperTrieReq

type HelperTrieReq struct {
	Type              uint
	TrieIdx           uint64
	Key               []byte
	FromLevel, AuxReq uint
}

type HelperTrieResps

type HelperTrieResps struct {
	Proofs  light.NodeList
	AuxData [][]byte
}

type LesApiBackend

type LesApiBackend struct {
	// contains filtered or unexported fields
}

func (*LesApiBackend) AccountManager

func (b *LesApiBackend) AccountManager() *accounts.Manager

func (*LesApiBackend) BlockByHash

func (b *LesApiBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)

func (*LesApiBackend) BlockByNumber

func (b *LesApiBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error)

func (*LesApiBackend) BlockByNumberOrHash

func (b *LesApiBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error)

func (*LesApiBackend) BloomStatus

func (b *LesApiBackend) BloomStatus() (uint64, uint64)

func (*LesApiBackend) ChainConfig

func (b *LesApiBackend) ChainConfig() *params.ChainConfig

func (*LesApiBackend) ChainDb

func (b *LesApiBackend) ChainDb() ethdb.Database

func (*LesApiBackend) CurrentBlock

func (b *LesApiBackend) CurrentBlock() *types.Block

func (*LesApiBackend) CurrentHeader

func (b *LesApiBackend) CurrentHeader() *types.Header

func (*LesApiBackend) Downloader

func (b *LesApiBackend) Downloader() *downloader.Downloader

func (*LesApiBackend) Engine

func (b *LesApiBackend) Engine() consensus.Engine

func (*LesApiBackend) ExtRPCEnabled

func (b *LesApiBackend) ExtRPCEnabled() bool

func (*LesApiBackend) FeeHistory

func (b *LesApiBackend) FeeHistory(ctx context.Context, blockCount int, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (firstBlock rpc.BlockNumber, reward [][]*big.Int, baseFee []*big.Int, gasUsedRatio []float64, err error)

func (*LesApiBackend) GetEVM

func (b *LesApiBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header, vmConfig *vm.Config) (*vm.EVM, func() error, error)

func (*LesApiBackend) GetLogs

func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error)

func (*LesApiBackend) GetPoolNonce

func (b *LesApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error)

func (*LesApiBackend) GetPoolTransaction

func (b *LesApiBackend) GetPoolTransaction(txHash common.Hash) *types.Transaction

func (*LesApiBackend) GetPoolTransactions

func (b *LesApiBackend) GetPoolTransactions() (types.Transactions, error)

func (*LesApiBackend) GetReceipts

func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error)

func (*LesApiBackend) GetTd

func (b *LesApiBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int

func (*LesApiBackend) GetTransaction

func (b *LesApiBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error)

func (*LesApiBackend) HeaderByHash

func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error)

func (*LesApiBackend) HeaderByNumber

func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error)

func (*LesApiBackend) HeaderByNumberOrHash

func (b *LesApiBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error)

func (*LesApiBackend) PendingBlockAndReceipts

func (b *LesApiBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts)

func (*LesApiBackend) ProtocolVersion

func (b *LesApiBackend) ProtocolVersion() int

func (*LesApiBackend) RPCGasCap

func (b *LesApiBackend) RPCGasCap() uint64

func (*LesApiBackend) RPCTxFeeCap

func (b *LesApiBackend) RPCTxFeeCap() float64

func (*LesApiBackend) RemoveTx

func (b *LesApiBackend) RemoveTx(txHash common.Hash)

func (*LesApiBackend) SendTx

func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error

func (*LesApiBackend) ServiceFilter

func (b *LesApiBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession)

func (*LesApiBackend) SetHead

func (b *LesApiBackend) SetHead(number uint64)

func (*LesApiBackend) StateAndHeaderByNumber

func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error)

func (*LesApiBackend) StateAndHeaderByNumberOrHash

func (b *LesApiBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error)

func (*LesApiBackend) StateAtBlock

func (b *LesApiBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (*state.StateDB, error)

func (*LesApiBackend) StateAtTransaction

func (b *LesApiBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error)

func (*LesApiBackend) Stats

func (b *LesApiBackend) Stats() (pending int, queued int)

func (*LesApiBackend) SubscribeChainEvent

func (b *LesApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription

func (*LesApiBackend) SubscribeChainHeadEvent

func (b *LesApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription

func (*LesApiBackend) SubscribeChainSideEvent

func (b *LesApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription

func (*LesApiBackend) SubscribeLogsEvent

func (b *LesApiBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription

func (*LesApiBackend) SubscribeNewTxsEvent

func (b *LesApiBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription

func (*LesApiBackend) SubscribePendingLogsEvent

func (b *LesApiBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription

func (*LesApiBackend) SubscribeRemovedLogsEvent

func (b *LesApiBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription

func (*LesApiBackend) SuggestGasTipCap

func (b *LesApiBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error)

func (*LesApiBackend) TxPoolContent

func (*LesApiBackend) TxPoolContentFrom

func (b *LesApiBackend) TxPoolContentFrom(addr common.Address) (types.Transactions, types.Transactions)

func (*LesApiBackend) UnprotectedAllowed

func (b *LesApiBackend) UnprotectedAllowed() bool

type LesOdr

type LesOdr struct {
	// contains filtered or unexported fields
}

LesOdr implements light.OdrBackend

func NewLesOdr

func NewLesOdr(db ethdb.Database, config *light.IndexerConfig, peers *serverPeerSet, retriever *retrieveManager) *LesOdr

func (*LesOdr) BloomIndexer

func (odr *LesOdr) BloomIndexer() *core.ChainIndexer

BloomIndexer returns the bloombits chain indexer

func (*LesOdr) BloomTrieIndexer

func (odr *LesOdr) BloomTrieIndexer() *core.ChainIndexer

BloomTrieIndexer returns the bloom trie chain indexer

func (*LesOdr) ChtIndexer

func (odr *LesOdr) ChtIndexer() *core.ChainIndexer

ChtIndexer returns the CHT chain indexer

func (*LesOdr) Database

func (odr *LesOdr) Database() ethdb.Database

Database returns the backing database

func (*LesOdr) IndexerConfig

func (odr *LesOdr) IndexerConfig() *light.IndexerConfig

IndexerConfig returns the indexer config.

func (*LesOdr) Retrieve

func (odr *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err error)

Retrieve tries to fetch an object from the LES network. It's a common API for most of the LES requests except for the TxStatusRequest which needs the additional retry mechanism. If the network retrieval was successful, it stores the object in local db.

func (*LesOdr) RetrieveTxStatus

func (odr *LesOdr) RetrieveTxStatus(ctx context.Context, req *light.TxStatusRequest) error

RetrieveTxStatus retrieves the transaction status from the LES network. There is no guarantee in the LES protocol that the mined transaction will be retrieved back for sure because of different reasons(the transaction is unindexed, the malicous server doesn't reply it deliberately, etc). Therefore, unretrieved transactions(UNKNOWN) will receive a certain number of retries, thus giving a weak guarantee.

func (*LesOdr) SetIndexers

func (odr *LesOdr) SetIndexers(chtIndexer, bloomTrieIndexer, bloomIndexer *core.ChainIndexer)

SetIndexers adds the necessary chain indexers to the ODR backend

func (*LesOdr) Stop

func (odr *LesOdr) Stop()

Stop cancels all pending retrievals

type LesOdrRequest

type LesOdrRequest interface {
	GetCost(*serverPeer) uint64
	CanSend(*serverPeer) bool
	Request(uint64, *serverPeer) error
	Validate(ethdb.Database, *Msg) error
}

func LesRequest

func LesRequest(req light.OdrRequest) LesOdrRequest

type LesServer

type LesServer struct {
	// contains filtered or unexported fields
}

func NewLesServer

func NewLesServer(node *node.Node, e ethBackend, config *ethconfig.Config) (*LesServer, error)

func (*LesServer) APIs

func (s *LesServer) APIs() []rpc.API

func (*LesServer) Protocols

func (s *LesServer) Protocols() []p2p.Protocol

func (*LesServer) Start

func (s *LesServer) Start() error

Start starts the LES server

func (*LesServer) Stop

func (s *LesServer) Stop() error

Stop stops the LES service

type LightDummyAPI

type LightDummyAPI struct{}

func (*LightDummyAPI) Coinbase

func (s *LightDummyAPI) Coinbase() (common.Address, error)

Coinbase is the address that mining rewards will be send to (alias for Etherbase)

func (*LightDummyAPI) Etherbase

func (s *LightDummyAPI) Etherbase() (common.Address, error)

Etherbase is the address that mining rewards will be send to

func (*LightDummyAPI) Hashrate

func (s *LightDummyAPI) Hashrate() hexutil.Uint

Hashrate returns the POW hashrate

func (*LightDummyAPI) Mining

func (s *LightDummyAPI) Mining() bool

Mining returns an indication if this node is currently mining.

type LightEthereum

type LightEthereum struct {
	ApiBackend *LesApiBackend
	// contains filtered or unexported fields
}

func New

func New(stack *node.Node, config *ethconfig.Config) (*LightEthereum, error)

New creates an instance of the light client.

func (*LightEthereum) APIs

func (s *LightEthereum) APIs() []rpc.API

APIs returns the collection of RPC services the ethereum package offers. NOTE, some of these services probably need to be moved to somewhere else.

func (*LightEthereum) BlockChain

func (s *LightEthereum) BlockChain() *light.LightChain

func (*LightEthereum) Downloader

func (s *LightEthereum) Downloader() *downloader.Downloader

func (*LightEthereum) Engine

func (s *LightEthereum) Engine() consensus.Engine

func (*LightEthereum) EventMux

func (s *LightEthereum) EventMux() *event.TypeMux

func (*LightEthereum) LesVersion

func (s *LightEthereum) LesVersion() int

func (*LightEthereum) Protocols

func (s *LightEthereum) Protocols() []p2p.Protocol

Protocols returns all the currently configured network protocols to start.

func (*LightEthereum) ResetWithGenesisBlock

func (s *LightEthereum) ResetWithGenesisBlock(gb *types.Block)

func (*LightEthereum) Start

func (s *LightEthereum) Start() error

Start implements node.Lifecycle, starting all internal goroutines needed by the light ethereum protocol implementation.

func (*LightEthereum) Stop

func (s *LightEthereum) Stop() error

Stop implements node.Lifecycle, terminating all internal goroutines used by the Ethereum protocol.

func (*LightEthereum) TxPool

func (s *LightEthereum) TxPool() *light.TxPool

func (*LightEthereum) VfluxRequest

func (s *LightEthereum) VfluxRequest(n *enode.Node, reqs vflux.Requests) vflux.Replies

VfluxRequest sends a batch of requests to the given node through discv5 UDP TalkRequest and returns the responses

type Msg

type Msg struct {
	MsgType int
	ReqID   uint64
	Obj     interface{}
}

Msg encodes a LES message that delivers reply data for a request

type NodeInfo

type NodeInfo struct {
	Network    uint64                   `json:"network"`    // Ethereum network ID (1=Frontier, 2=Morden, Ropsten=3, Rinkeby=4)
	Difficulty *big.Int                 `json:"difficulty"` // Total difficulty of the host's blockchain
	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        params.TrustedCheckpoint `json:"cht"`        // Trused CHT checkpoint for fast catchup
}

NodeInfo represents a short summary of the Ethereum sub-protocol metadata known about the host peer.

type PeerInfo

type PeerInfo struct {
	Version    int      `json:"version"`    // Ethereum protocol version negotiated
	Difficulty *big.Int `json:"difficulty"` // Total difficulty of the peer's blockchain
	Head       string   `json:"head"`       // SHA3 hash of the peer's best owned block
}

PeerInfo represents a short summary of the `eth` sub-protocol metadata known about a connected peer.

type PrivateDebugAPI

type PrivateDebugAPI struct {
	// contains filtered or unexported fields
}

PrivateDebugAPI provides an API to debug LES light server functionality.

func NewPrivateDebugAPI

func NewPrivateDebugAPI(server *LesServer) *PrivateDebugAPI

NewPrivateDebugAPI creates a new LES light server debug API.

func (*PrivateDebugAPI) FreezeClient

func (api *PrivateDebugAPI) FreezeClient(node string) error

FreezeClient forces a temporary client freeze which normally happens when the server is overloaded

type PrivateLightAPI

type PrivateLightAPI struct {
	// contains filtered or unexported fields
}

PrivateLightAPI provides an API to access the LES light server or light client.

func NewPrivateLightAPI

func NewPrivateLightAPI(backend *lesCommons) *PrivateLightAPI

NewPrivateLightAPI creates a new LES service API.

func (*PrivateLightAPI) GetCheckpoint

func (api *PrivateLightAPI) GetCheckpoint(index uint64) ([3]string, error)

GetLocalCheckpoint returns the specific local checkpoint package.

The checkpoint package consists of 3 strings:

result[0], 32 bytes hex encoded latest section head hash
result[1], 32 bytes hex encoded latest section canonical hash trie root hash
result[2], 32 bytes hex encoded latest section bloom trie root hash

func (*PrivateLightAPI) GetCheckpointContractAddress

func (api *PrivateLightAPI) GetCheckpointContractAddress() (string, error)

GetCheckpointContractAddress returns the contract contract address in hex format.

func (*PrivateLightAPI) LatestCheckpoint

func (api *PrivateLightAPI) LatestCheckpoint() ([4]string, error)

LatestCheckpoint returns the latest local checkpoint package.

The checkpoint package consists of 4 strings:

result[0], hex encoded latest section index
result[1], 32 bytes hex encoded latest section head hash
result[2], 32 bytes hex encoded latest section canonical hash trie root hash
result[3], 32 bytes hex encoded latest section bloom trie root hash

type PrivateLightServerAPI

type PrivateLightServerAPI struct {
	// contains filtered or unexported fields
}

PrivateLightServerAPI provides an API to access the LES light server.

func NewPrivateLightServerAPI

func NewPrivateLightServerAPI(server *LesServer) *PrivateLightServerAPI

NewPrivateLightServerAPI creates a new LES light server API.

func (*PrivateLightServerAPI) AddBalance

func (api *PrivateLightServerAPI) AddBalance(node string, amount int64) (balance [2]uint64, err error)

AddBalance adds the given amount to the balance of a client if possible and returns the balance before and after the operation

func (*PrivateLightServerAPI) Benchmark

func (api *PrivateLightServerAPI) Benchmark(setups []map[string]interface{}, passCount, length int) ([]map[string]interface{}, error)

Benchmark runs a request performance benchmark with a given set of measurement setups in multiple passes specified by passCount. The measurement time for each setup in each pass is specified in milliseconds by length.

Note: measurement time is adjusted for each pass depending on the previous ones. Therefore a controlled total measurement time is achievable in multiple passes.

func (*PrivateLightServerAPI) ClientInfo

func (api *PrivateLightServerAPI) ClientInfo(nodes []string) map[enode.ID]map[string]interface{}

ClientInfo returns information about clients listed in the ids list or matching the given tags

func (*PrivateLightServerAPI) PriorityClientInfo

func (api *PrivateLightServerAPI) PriorityClientInfo(start, stop enode.ID, maxCount int) map[enode.ID]map[string]interface{}

PriorityClientInfo returns information about clients with a positive balance in the given ID range (stop excluded). If stop is null then the iterator stops only at the end of the ID space. MaxCount limits the number of results returned. If maxCount limit is applied but there are more potential results then the ID of the next potential result is included in the map with an empty structure assigned to it.

func (*PrivateLightServerAPI) ServerInfo

func (api *PrivateLightServerAPI) ServerInfo() map[string]interface{}

ServerInfo returns global server parameters

func (*PrivateLightServerAPI) SetClientParams

func (api *PrivateLightServerAPI) SetClientParams(nodes []string, params map[string]interface{}) error

SetClientParams sets client parameters for all clients listed in the ids list or all connected clients if the list is empty

func (*PrivateLightServerAPI) SetConnectedBias

func (api *PrivateLightServerAPI) SetConnectedBias(bias time.Duration) error

SetConnectedBias set the connection bias, which is applied to already connected clients So that already connected client won't be kicked out very soon and we can ensure all connected clients can have enough time to request or sync some data. When the input parameter `bias` < 0 (illegal), return error.

func (*PrivateLightServerAPI) SetDefaultParams

func (api *PrivateLightServerAPI) SetDefaultParams(params map[string]interface{}) error

SetDefaultParams sets the default parameters applicable to clients connected in the future

type ProofReq

type ProofReq struct {
	BHash       common.Hash
	AccKey, Key []byte
	FromLevel   uint
}

type ReceiptsRequest

type ReceiptsRequest light.ReceiptsRequest

ReceiptsRequest is the ODR request type for block receipts by block hash

func (*ReceiptsRequest) CanSend

func (r *ReceiptsRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*ReceiptsRequest) GetCost

func (r *ReceiptsRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*ReceiptsRequest) Request

func (r *ReceiptsRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*ReceiptsRequest) Validate

func (r *ReceiptsRequest) Validate(db ethdb.Database, msg *Msg) error

Valid processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

type RequestCostList

type RequestCostList []requestCostListItem

RequestCostList is a list representation of request costs which is used for database storage and communication through the network

type RequestType

type RequestType struct {
	Name                                                             string
	MaxCount                                                         uint64
	InPacketsMeter, InTrafficMeter, OutPacketsMeter, OutTrafficMeter metrics.Meter
	ServingTimeMeter                                                 metrics.Timer
	Handle                                                           func(msg Decoder) (serve serveRequestFn, reqID, amount uint64, err error)
}

RequestType is a static struct that describes an LES request type and references its handler function.

type SendTxPacket

type SendTxPacket struct {
	ReqID uint64
	Txs   []*types.Transaction
}

SendTxPacket represents a transaction propagation request

type TrieRequest

type TrieRequest light.TrieRequest

ODR request type for state/storage trie entries, see LesOdrRequest interface

func (*TrieRequest) CanSend

func (r *TrieRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*TrieRequest) GetCost

func (r *TrieRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*TrieRequest) Request

func (r *TrieRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*TrieRequest) Validate

func (r *TrieRequest) Validate(db ethdb.Database, msg *Msg) error

Valid processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

type TxStatusRequest

type TxStatusRequest light.TxStatusRequest

TxStatusRequest is the ODR request type for transaction status

func (*TxStatusRequest) CanSend

func (r *TxStatusRequest) CanSend(peer *serverPeer) bool

CanSend tells if a certain peer is suitable for serving the given request

func (*TxStatusRequest) GetCost

func (r *TxStatusRequest) GetCost(peer *serverPeer) uint64

GetCost returns the cost of the given ODR request according to the serving peer's cost table (implementation of LesOdrRequest)

func (*TxStatusRequest) Request

func (r *TxStatusRequest) Request(reqID uint64, peer *serverPeer) error

Request sends an ODR request to the LES network (implementation of LesOdrRequest)

func (*TxStatusRequest) Validate

func (r *TxStatusRequest) Validate(db ethdb.Database, msg *Msg) error

Validate processes an ODR request reply message from the LES network returns true and stores results in memory if the message was a valid reply to the request (implementation of LesOdrRequest)

Directories

Path Synopsis
Package checkpointoracle is a wrapper of checkpoint oracle contract with additional rules defined.
Package checkpointoracle is a wrapper of checkpoint oracle contract with additional rules defined.
Package flowcontrol implements a client side flow control mechanism
Package flowcontrol implements a client side flow control mechanism

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