les

package
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 Go to latest Published: Jan 16, 2024 License: GPL-3.0 Imports: 65 Imported by: 0

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}
)

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 */}

ProtocolLengths is the 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

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)

type BloomReq 

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

type BloomRequest 

type BloomRequest light.BloomRequest

BloomRequest is the 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

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)

type ChtRequest 

type ChtRequest light.ChtRequest

ChtRequest is the 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

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)

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
	AccountAddress []byte
}

type CodeRequest 

type CodeRequest light.CodeRequest

CodeRequest is the 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

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)

type DebugAPI 

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

DebugAPI provides an API to debug LES light server functionality.

func NewDebugAPI 

func NewDebugAPI(server *LesServer) *DebugAPI

NewDebugAPI creates a new LES light server debug API.

func (*DebugAPI) FreezeClient 

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

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

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  trienode.ProofList
	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.Header

func (*LesApiBackend) CurrentHeader 

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

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 uint64, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (firstBlock *big.Int, reward [][]*big.Int, baseFee []*big.Int, gasUsedRatio []float64, err error)

func (*LesApiBackend) Genesis 

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

func (*LesApiBackend) GetBody 

func (b *LesApiBackend) GetBody(ctx context.Context, hash common.Hash, number rpc.BlockNumber) (*types.Body, error)

func (*LesApiBackend) GetEVM 

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

func (*LesApiBackend) GetLogs 

func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash, number uint64) ([][]*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) HistoricalRPCService 

func (b *LesApiBackend) HistoricalRPCService() *rpc.Client

func (*LesApiBackend) PendingBlockAndReceipts 

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

func (*LesApiBackend) ProtocolVersion 

func (b *LesApiBackend) ProtocolVersion() int

func (*LesApiBackend) RPCEVMTimeout 

func (b *LesApiBackend) RPCEVMTimeout() time.Duration

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, readOnly bool, preferDisk bool) (*state.StateDB, tracers.StateReleaseFunc, error)

func (*LesApiBackend) StateAtTransaction 

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

func (b *LesApiBackend) SyncProgress() ethereum.SyncProgress

func (*LesApiBackend) TxPoolContent 

func (b *LesApiBackend) TxPoolContent() (map[common.Address][]*types.Transaction, map[common.Address][]*types.Transaction)

func (*LesApiBackend) TxPoolContentFrom 

func (b *LesApiBackend) TxPoolContentFrom(addr common.Address) ([]*types.Transaction, []*types.Transaction)

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 malicious 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 sent to (alias for Etherbase)

func (*LightDummyAPI) Etherbase 

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

Etherbase is the address that mining rewards will be sent 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) 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) Merger 

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

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 LightServerAPI 

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

LightServerAPI provides an API to access the LES light server.

func NewLightServerAPI 

func NewLightServerAPI(server *LesServer) *LightServerAPI

NewLightServerAPI creates a new LES light server API.

func (*LightServerAPI) AddBalance 

func (api *LightServerAPI) 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 (*LightServerAPI) Benchmark 

func (api *LightServerAPI) 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 (*LightServerAPI) ClientInfo 

func (api *LightServerAPI) 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 (*LightServerAPI) PriorityClientInfo 

func (api *LightServerAPI) 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 (*LightServerAPI) ServerInfo 

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

ServerInfo returns global server parameters

func (*LightServerAPI) SetClientParams 

func (api *LightServerAPI) 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 (*LightServerAPI) SetConnectedBias 

func (api *LightServerAPI) 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 (*LightServerAPI) SetDefaultParams 

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

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

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=Mainnet, Goerli=5)
	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
}

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 ProofReq 

type ProofReq struct {
	BHash               common.Hash
	AccountAddress, 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

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)

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

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)

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)

Source Files

View all Source files

Directories

Path Synopsis
Package flowcontrol implements a client side flow control mechanism
 Package flowcontrol implements a client side flow control mechanism
client
server

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