les

package
v1.4.2 Latest Latest
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 Go to latest Published: Oct 4, 2021 License: GPL-3.0 Imports: 69 Imported by: 0

Documentation

Overview

Package les implements the Light Ethereum Subprotocol.

Index

Constants

View Source 
const (
	MsgBlockBodies = iota
	MsgCode
	MsgReceipts
	MsgProofsV2
	MsgHelperTrieProofs
	MsgTxStatus
	MsgBlockHeaders
)
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
	// Introduced in Celo v1.0
	GetEtherbaseMsg = 0x16
	EtherbaseMsg    = 0x17
	// Protocol messages introduced in LPV3
	StopMsg   = 0x18
	ResumeMsg = 0x19
	// Protocol messages to be introduced in LPV4
	GetGatewayFeeMsg = 0x1A
	GatewayFeeMsg    = 0x1B
)

les protocol message codes

View Source 
const (
	ErrMsgTooLarge = iota
	ErrDecode
	ErrInvalidMsgCode
	ErrProtocolVersionMismatch
	ErrNetworkIdMismatch
	ErrGenesisBlockMismatch
	ErrNoStatusMsg
	ErrExtraStatusMsg
	ErrSuspendedPeer
	ErrUselessPeer
	ErrRequestRejected
	ErrUnexpectedResponse
	ErrInvalidResponse
	ErrTooManyTimeouts
	ErrMissingKey
)
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
	MaxEtherbase             = 1
	MaxGatewayFee            = 1
)

Variables

View Source 
var (
	ClientProtocolVersions    = []uint{lpv2, lpv3}
	ServerProtocolVersions    = []uint{lpv2, lpv3}
	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 ProtocolLengths = map[uint]uint64{/* contains filtered or unexported fields */}

Number of implemented message corresponding to different protocol versions.

Functions

This section is empty.

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 GatewayFeeInformation 

type GatewayFeeInformation struct {
	GatewayFee *big.Int
	Etherbase  common.Address
}

type HeaderRequest 

type HeaderRequest light.HeaderRequest

BlockRequest is the ODR request type for block headers

func (*HeaderRequest) CanSend 

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

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

func (*HeaderRequest) GetCost 

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

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

func (*HeaderRequest) Request 

func (r *HeaderRequest) Request(reqId uint64, peer *serverPeer) error

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

func (*HeaderRequest) Validate 

func (r *HeaderRequest) 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 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) GatewayFee 

func (b *LesApiBackend) GatewayFee() *big.Int

func (*LesApiBackend) GatewayFeeRecipient 

func (b *LesApiBackend) GatewayFeeRecipient() common.Address

func (*LesApiBackend) GetBlockGasLimit 

func (b *LesApiBackend) GetBlockGasLimit(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) uint64

func (*LesApiBackend) GetEVM 

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

func (*LesApiBackend) GetIntrinsicGasForAlternativeFeeCurrency 

func (b *LesApiBackend) GetIntrinsicGasForAlternativeFeeCurrency(ctx context.Context) uint64

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) NewEVMRunner 

func (b *LesApiBackend) NewEVMRunner(header *types.Header, state vm.StateDB) vm.EVMRunner

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) 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) SuggestPrice 

func (b *LesApiBackend) SuggestPrice(ctx context.Context, currencyAddress *common.Address) (*big.Int, error)

func (*LesApiBackend) TxPoolContent 

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

type LesOdr 

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

LesOdr implements light.OdrBackend

func NewLesOdr 

func NewLesOdr(db ethdb.Database, config *light.IndexerConfig, 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. If the network retrieval was successful, it stores the object in local db.

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 *eth.Ethereum, config *eth.Config) (*LesServer, error)

func (*LesServer) APIs 

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

func (*LesServer) BroadcastGatewayFeeInfo 

func (s *LesServer) BroadcastGatewayFeeInfo() error

This sends messages to light client peers whenever this light server updates gateway fee.

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 LightChainReader 

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

func (*LightChainReader) Config 

func (lcr *LightChainReader) Config() *params.ChainConfig

Config returns the chain configuration.

func (*LightChainReader) CurrentHeader 

func (lcr *LightChainReader) CurrentHeader() *types.Header

func (*LightChainReader) GetBlock 

func (lcr *LightChainReader) GetBlock(hash common.Hash, number uint64) *types.Block

func (*LightChainReader) GetHeader 

func (lcr *LightChainReader) GetHeader(hash common.Hash, number uint64) *types.Header

func (*LightChainReader) GetHeaderByHash 

func (lcr *LightChainReader) GetHeaderByHash(hash common.Hash) *types.Header

func (*LightChainReader) GetHeaderByNumber 

func (lcr *LightChainReader) GetHeaderByNumber(number uint64) *types.Header

func (*LightChainReader) NewEVMRunner 

func (lcr *LightChainReader) NewEVMRunner(header *types.Header, state vm.StateDB) vm.EVMRunner

NewEVMRunner creates the System's EVMRunner for given header & sttate

func (*LightChainReader) NewEVMRunnerForCurrentBlock 

func (lcr *LightChainReader) NewEVMRunnerForCurrentBlock() (vm.EVMRunner, error)

NewEVMRunnerForCurrentBlock creates the System's EVMRunner for current block & state

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 *eth.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) GetRandomPeerEtherbase 

func (s *LightEthereum) GetRandomPeerEtherbase() common.Address

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) ServerPool 

func (s *LightEthereum) ServerPool() *serverPool

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

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)
	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 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(id enode.ID) 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 PrivateLightClientAPI 

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

API should be for light clients of les protocol

func NewPrivateLightClientAPI 

func NewPrivateLightClientAPI(le *LightEthereum) *PrivateLightClientAPI

func (*PrivateLightClientAPI) GatewayFeeCache 

func (api *PrivateLightClientAPI) GatewayFeeCache() map[string]*GatewayFeeInformation

func (*PrivateLightClientAPI) RequestPeerGatewayFees 

func (api *PrivateLightClientAPI) RequestPeerGatewayFees() error

RequestPeerGatewayFees updates cache by pulling gateway fee peer nodes

func (*PrivateLightClientAPI) SuggestGatewayFee 

func (api *PrivateLightClientAPI) SuggestGatewayFee() (*GatewayFeeInformation, error)

SuggestGatewayFee suggests the best light server to choose based on different factors. Currently only minPeerGatewayFee.

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(id enode.ID, value int64, meta string) ([2]uint64, error)

AddBalance updates the balance of a client (either overwrites it or adds to it). It also updates the balance meta info string.

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(ids []enode.ID) map[enode.ID]map[string]interface{}

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

func (*PrivateLightServerAPI) GatewayFee 

func (api *PrivateLightServerAPI) GatewayFee() (gf *big.Int, err error)

GatewayFee returns the current gateway fee of this light server

func (*PrivateLightServerAPI) GatewayFeeRecipient 

func (api *PrivateLightServerAPI) GatewayFeeRecipient() (eb common.Address, err error)

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(ids []enode.ID, 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

func (*PrivateLightServerAPI) SetGatewayFee 

func (api *PrivateLightServerAPI) SetGatewayFee(gf *big.Int) error

SetGatewayFee allows this light server node to set a gateway fee

func (*PrivateLightServerAPI) SetGatewayFeeRecipient 

func (api *PrivateLightServerAPI) SetGatewayFeeRecipient(etherbase common.Address) error

SetGatewayFeeRecipient sets the etherbase of the gateway fee recipient

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 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

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)

Source Files

View all Source files

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
lespay
client

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