neorpc

package
v0.103.0 Latest Latest
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 Go to latest Published: Oct 20, 2023 License: MIT Imports: 8 Imported by: 7

Documentation

Overview

Package neorpc contains a set of types used for JSON-RPC communication with Neo servers. It defines basic request/response types as well as a set of errors and additional parameters used for specific requests/responses.

Index

Constants

View Source 
const (
	// InternalServerErrorCode is returned for internal RPC server error.
	InternalServerErrorCode = -32603
	// BadRequestCode is returned on parse error.
	BadRequestCode = -32700
	// InvalidRequestCode is returned on invalid request.
	InvalidRequestCode = -32600
	// MethodNotFoundCode is returned on unknown method calling.
	MethodNotFoundCode = -32601
	// InvalidParamsCode is returned on request with invalid params.
	InvalidParamsCode = -32602
)

Standard RPC error codes defined by the JSON-RPC 2.0 specification.

View Source 
const (
	// ErrUnknownBlockCode is returned from a call that accepts as a parameter or searches for a header or a block
	// as a part of its job can't find it.
	ErrUnknownBlockCode = -101
	// ErrUnknownContractCode is returned from a call that accepts as a parameter or searches for a contract
	// as a part of its job can't find it.
	ErrUnknownContractCode = -102
	// ErrUnknownTransactionCode is returned from a call that accepts as a parameter or searches for a transaction
	// as a part of its job can't find it.
	ErrUnknownTransactionCode = -103
	// ErrUnknownStorageItemCode is returned from a call that looks for an item in the contract storage
	// as part of its job can't find it.
	ErrUnknownStorageItemCode = -104
	// ErrUnknownScriptContainerCode is returned from a call that accepts as a parameter or searches for a script
	// container (a block or transaction) as a part of its job can't find it
	// (this error generalizes -101 and -103 in cases where it's needed).
	ErrUnknownScriptContainerCode = -105
	// ErrUnknownStateRootCode is returned from a call that accepts as a parameter or searches for a state root
	// as a part of its job can't find it.
	ErrUnknownStateRootCode = -106
	// ErrUnknownSessionCode is returned from a call that accepts as a parameter or searches for an iterator session
	// as a part of its job can't find it.
	ErrUnknownSessionCode = -107
	// ErrUnknownIteratorCode is returned from a call that accepts as a parameter or searches for a session iterator
	// as a part of its job can't find it.
	ErrUnknownIteratorCode = -108
	// ErrUnknownHeightCode is returned if block or header height passed as parameter or calculated during call
	// execution is not correct (out of the range known to the node).
	ErrUnknownHeightCode = -109
)

RPC error codes defined by the Neo JSON-RPC specification extension. Codes for missing items.

View Source 
const (
	// ErrInsufficientFundsWalletCode is returned if transaction that sends some assets can't be created
	// because it fails. Can be returned only by the C# RPC server.
	ErrInsufficientFundsWalletCode = -300
	// ErrWalletFeeLimitCode is returned if transaction requires more network fee to be paid
	// than is allowed by settings. Can be returned only by the C# RPC server.
	ErrWalletFeeLimitCode = -301
	// ErrNoOpenedWalletCode is returned if server doesn't have any opened wallet to operate with.
	// Can be returned only by the C# RPC server.
	ErrNoOpenedWalletCode = -302
	// ErrWalletNotFoundCode is returned if specified (or configured) wallet file path is invalid.
	// Can be returned only by the C# RPC server.
	ErrWalletNotFoundCode = -303
	// ErrWalletNotSupportedCode is returned if specified (or configured) file can't be opened as a wallet.
	// Can be returned only by the C# RPC server.
	ErrWalletNotSupportedCode = -304
)

Codes for calls that use a wallet (-300...-304) can be returned by the C# RPC server only, see the https://github.com/nspcc-dev/neo-go/blob/master/docs/rpc.md#unsupported-methods.

View Source 
const (
	// ErrVerificationFailedCode is returned on anything that can't be expressed by other codes.
	// It is an unclassified inventory verification error.
	ErrVerificationFailedCode = -500
	// ErrAlreadyExistsCode is returned if block or transaction is already accepted and processed on chain.
	ErrAlreadyExistsCode = -501
	// ErrMempoolCapReachedCode is returned if no more transactions can be accepted into the memory pool
	// (unless they have a priority) as its full capacity is reached.
	ErrMempoolCapReachedCode = -502
	// ErrAlreadyInPoolCode is returned if transaction is already pooled, but not yet accepted into a block.
	ErrAlreadyInPoolCode = -503
	// ErrInsufficientNetworkFeeCode is returned if transaction has incorrect (too small per Policy setting)
	// network fee value.
	ErrInsufficientNetworkFeeCode = -504
	// ErrPolicyFailedCode is returned from a call denied by the Policy contract (one of signers is blocked) or
	// if one of the Policy filters failed.
	ErrPolicyFailedCode = -505
	// ErrInvalidScriptCode is returned if transaction contains incorrect executable script.
	ErrInvalidScriptCode = -506
	// ErrInvalidAttributeCode is returned if transaction contains an invalid attribute.
	ErrInvalidAttributeCode = -507
	// ErrInvalidSignatureCode is returned if one of the verification scripts failed.
	ErrInvalidSignatureCode = -508
	// ErrInvalidSizeCode is returned if transaction or its script is too big.
	ErrInvalidSizeCode = -509
	// ErrExpiredTransactionCode is returned if transaction's ValidUntilBlock value is already in the past.
	ErrExpiredTransactionCode = -510
	// ErrInsufficientFundsCode is returned if sender doesn't have enough GAS to pay for all currently pooled transactions.
	ErrInsufficientFundsCode = -511
	// ErrInvalidVerificationFunctionCode is returned if contract doesn't have a verify method or
	// this method doesn't return proper value.
	ErrInvalidVerificationFunctionCode = -512
)

Inventory verification or verification script errors.

View Source 
const (
	// ErrSessionsDisabledCode is returned if iterator session support is not enabled on the server.
	ErrSessionsDisabledCode = -601
	// ErrOracleDisabledCode is returned if Oracle service is not enabled in the configuration (service is not running).
	ErrOracleDisabledCode = -602
	// ErrOracleRequestFinishedCode is returned if Oracle request submitted is already completely processed.
	// Can be returned only by the C# RPC server.
	ErrOracleRequestFinishedCode = -603
	// ErrOracleRequestNotFoundCode is returned if Oracle request submitted is not known to this node.
	// Can be returned only by the C# RPC server.
	ErrOracleRequestNotFoundCode = -604
	// ErrOracleNotDesignatedNodeCode is returned if Oracle service is enabled, but this node is not designated
	// to provide this functionality. Can be returned only by the C# RPC server.
	ErrOracleNotDesignatedNodeCode = -605
	// ErrUnsupportedStateCode is returned if this node can't answer requests for old state because it's configured
	// to keep only the latest one.
	ErrUnsupportedStateCode = -606
	// ErrInvalidProofCode is returned if state proof verification failed.
	ErrInvalidProofCode = -607
	// ErrExecutionFailedCode is returned from a call made a VM execution, but it has failed.
	ErrExecutionFailedCode = -608
)

Errors related to node configuration and various services.

View Source 
const (
	// JSONRPCVersion is the only JSON-RPC protocol version supported.
	JSONRPCVersion = "2.0"
)

Variables

View Source 
var (
	// ErrCompatGeneric is an error returned by nodes not compliant with the neo-project/proposals#156
	// (NeoGo pre-0.102.0 and all known C# versions).
	// It can be returned for any call and doesn't have any specific meaning.
	//
	// Deprecated: to be removed after all nodes adopt new error standard.
	ErrCompatGeneric = NewErrorWithCode(-100, "RPC error")

	// ErrCompatNoOpenedWallet is an error code returned by nodes not compliant with the neo-project/proposals#156
	// (all known C# versions, NeoGo never used this code). It can be returned for wallet-related operations.
	//
	// Deprecated: to be removed after all nodes adopt new error standard.
	ErrCompatNoOpenedWallet = NewErrorWithCode(-400, "No opened wallet")
)
View Source 
var (
	// ErrInvalidParams represents a generic "Invalid params" error.
	ErrInvalidParams = NewInvalidParamsError("Invalid params")

	// ErrUnknownBlock represents an error with code [ErrUnknownBlockCode].
	// Call that accepts as a parameter or searches for a header or a block as a part of its job can't find it.
	ErrUnknownBlock = NewErrorWithCode(ErrUnknownBlockCode, "Unknown block")
	// ErrUnknownContract represents an error with code [ErrUnknownContractCode].
	// Call that accepts as a parameter or searches for a contract as a part of its job can't find it.
	ErrUnknownContract = NewErrorWithCode(ErrUnknownContractCode, "Unknown contract")
	// ErrUnknownTransaction represents an error with code [ErrUnknownTransactionCode].
	// Call that accepts as a parameter or searches for a transaction as a part of its job can't find it.
	ErrUnknownTransaction = NewErrorWithCode(ErrUnknownTransactionCode, "Unknown transaction")
	// ErrUnknownStorageItem represents an error with code [ErrUnknownStorageItemCode].
	// Call that looks for an item in the contract storage as part of its job can't find it.
	ErrUnknownStorageItem = NewErrorWithCode(ErrUnknownStorageItemCode, "Unknown storage item")
	// ErrUnknownScriptContainer represents an error with code [ErrUnknownScriptContainerCode].
	// Call that accepts as a parameter or searches for a script container (a block or transaction)
	// as a part of its job can't find it (this error generalizes [ErrUnknownBlockCode] and [ErrUnknownTransactionCode]
	// in cases where it's needed).
	ErrUnknownScriptContainer = NewErrorWithCode(ErrUnknownScriptContainerCode, "Unknown script container")
	// ErrUnknownStateRoot represents an error with code [ErrUnknownStateRootCode].
	// Call that accepts as a parameter or searches for a state root as a part of its job can't find it.
	ErrUnknownStateRoot = NewErrorWithCode(ErrUnknownStateRootCode, "Unknown state root")
	// ErrUnknownSession represents an error with code [ErrUnknownSessionCode].
	// Call that accepts as a parameter or searches for an iterator session as a part of its job can't find it.
	ErrUnknownSession = NewErrorWithCode(ErrUnknownSessionCode, "Unknown session")
	// ErrUnknownIterator represents an error with code [ErrUnknownIteratorCode].
	// Call that accepts as a parameter or searches for a session iterator as a part of its job can't find it.
	ErrUnknownIterator = NewErrorWithCode(ErrUnknownIteratorCode, "Unknown iterator")
	// ErrUnknownHeight represents an error with code [ErrUnknownHeightCode].
	// Block or header height passed as parameter or calculated during call execution is not correct
	// (out of the range known to the node).
	ErrUnknownHeight = NewErrorWithCode(ErrUnknownHeightCode, "Unknown height")

	// ErrInsufficientFundsWallet represents an error with code [ErrInsufficientFundsWalletCode]. Can be returned only by the C# RPC server.
	// Transaction that sends some assets can't be created because it fails.
	ErrInsufficientFundsWallet = NewErrorWithCode(ErrInsufficientFundsWalletCode, "Insufficient funds")
	// ErrWalletFeeLimit represents an error with code [ErrWalletFeeLimitCode]. Can be returned only by the C# RPC server.
	// Transaction requires more network fee to be paid than is allowed by settings.
	ErrWalletFeeLimit = NewErrorWithCode(ErrWalletFeeLimitCode, "Fee limit exceeded")
	// ErrNoOpenedWallet represents an error with code [ErrNoOpenedWalletCode]. Can be returned only by the C# RPC server.
	// Server doesn't have any opened wallet to operate with.
	ErrNoOpenedWallet = NewErrorWithCode(ErrNoOpenedWalletCode, "No opened wallet")
	// ErrWalletNotFound represents an error with code [ErrWalletNotFoundCode]. Can be returned only by the C# RPC server.
	// Specified (or configured) wallet file path is invalid.
	ErrWalletNotFound = NewErrorWithCode(ErrWalletNotFoundCode, "Wallet not found")
	// ErrWalletNotSupported represents an error with code [ErrWalletNotSupportedCode]. Can be returned only by the C# RPC server.
	// Specified (or configured) file can't be opened as a wallet.
	ErrWalletNotSupported = NewErrorWithCode(ErrWalletNotSupportedCode, "Wallet not supported")

	// ErrVerificationFailed represents an error with code [ErrVerificationFailedCode].
	// Any verification error that can't be expressed by other codes.
	ErrVerificationFailed = NewErrorWithCode(ErrVerificationFailedCode, "Unclassified inventory verification error")
	// ErrAlreadyExists represents an error with code [ErrAlreadyExistsCode].
	// Block or transaction is already accepted and processed on chain.
	ErrAlreadyExists = NewErrorWithCode(ErrAlreadyExistsCode, "Inventory already exists on chain")
	// ErrMempoolCapReached represents an error with code [ErrMempoolCapReachedCode].
	// No more transactions can be accepted into the memory pool (unless they have a priority) as its full capacity is reached.
	ErrMempoolCapReached = NewErrorWithCode(ErrMempoolCapReachedCode, "The memory pool is full and no more transactions can be sent")
	// ErrAlreadyInPool represents an error with code [ErrAlreadyInPoolCode].
	// Transaction is already pooled, but not yet accepted into a block.
	ErrAlreadyInPool = NewErrorWithCode(ErrAlreadyInPoolCode, "Transaction already exists in the memory pool")
	// ErrInsufficientNetworkFee represents an error with code [ErrInsufficientNetworkFeeCode].
	// Transaction has incorrect (too small per Policy setting) network fee value.
	ErrInsufficientNetworkFee = NewErrorWithCode(ErrInsufficientNetworkFeeCode, "Insufficient network fee")
	// ErrPolicyFailed represents an error with code [ErrPolicyFailedCode].
	// Denied by the Policy contract (one of signers is blocked).
	ErrPolicyFailed = NewErrorWithCode(ErrPolicyFailedCode, "One of the Policy filters failed")
	// ErrInvalidScript represents an error with code [ErrInvalidScriptCode].
	// Transaction contains incorrect executable script.
	ErrInvalidScript = NewErrorWithCode(ErrInvalidScriptCode, "Invalid script")
	// ErrInvalidAttribute represents an error with code [ErrInvalidAttributeCode].
	// Transaction contains an invalid attribute.
	ErrInvalidAttribute = NewErrorWithCode(ErrInvalidAttributeCode, "Invalid transaction attribute")
	// ErrInvalidSignature represents an error with code [ErrInvalidSignatureCode].
	// One of the verification scripts failed.
	ErrInvalidSignature = NewErrorWithCode(ErrInvalidSignatureCode, "Invalid signature")
	// ErrInvalidSize represents an error with code [ErrInvalidSizeCode].
	// Transaction or its script is too big.
	ErrInvalidSize = NewErrorWithCode(ErrInvalidSizeCode, "Invalid inventory size")
	// ErrExpiredTransaction represents an error with code [ErrExpiredTransactionCode].
	// Transaction's ValidUntilBlock value is already in the past.
	ErrExpiredTransaction = NewErrorWithCode(ErrExpiredTransactionCode, "Expired transaction")
	// ErrInsufficientFunds represents an error with code [ErrInsufficientFundsCode].
	// Sender doesn't have enough GAS to pay for all currently pooled transactions.
	ErrInsufficientFunds = NewErrorWithCode(ErrInsufficientFundsCode, "Insufficient funds")
	// ErrInvalidVerificationFunction represents an error with code [ErrInvalidVerificationFunctionCode].
	// Contract doesn't have a verify method or this method doesn't return proper value.
	ErrInvalidVerificationFunction = NewErrorWithCode(ErrInvalidVerificationFunctionCode, "Invalid verification function")

	// ErrSessionsDisabled represents an error with code [ErrSessionsDisabledCode].
	// Iterator session support is not enabled on the server.
	ErrSessionsDisabled = NewErrorWithCode(ErrSessionsDisabledCode, "Sessions disabled")
	// ErrOracleDisabled represents an error with code [ErrOracleDisabledCode].
	// Service is not enabled in the configuration.
	ErrOracleDisabled = NewErrorWithCode(ErrOracleDisabledCode, "Oracle service is not running")
	// ErrOracleRequestFinished represents an error with code [ErrOracleRequestFinishedCode]. Can be returned only by the C# RPC server.
	// The oracle request submitted is already completely processed.
	ErrOracleRequestFinished = NewErrorWithCode(ErrOracleRequestFinishedCode, "Oracle request has already been finished")
	// ErrOracleRequestNotFound represents an error with code [ErrOracleRequestNotFoundCode]. Can be returned only by the C# RPC server.
	// The oracle request submitted is not known to this node.
	ErrOracleRequestNotFound = NewErrorWithCode(ErrOracleRequestNotFoundCode, "Oracle request is not found")
	// ErrOracleNotDesignatedNode represents an error with code [ErrOracleNotDesignatedNodeCode]. Can be returned only by the C# RPC server.
	// Oracle service is enabled, but this node is not designated to provide this functionality.
	ErrOracleNotDesignatedNode = NewErrorWithCode(ErrOracleNotDesignatedNodeCode, "Not a designated oracle node")
	// ErrUnsupportedState represents an error with code [ErrUnsupportedStateCode].
	// This node can't answer requests for old state because it's configured to keep only the latest one.
	ErrUnsupportedState = NewErrorWithCode(ErrUnsupportedStateCode, "Old state requests are not supported")
	// ErrInvalidProof represents an error with code [ErrInvalidProofCode].
	// State proof verification failed.
	ErrInvalidProof = NewErrorWithCode(ErrInvalidProofCode, "Invalid proof")
	// ErrExecutionFailed represents an error with code [ErrExecutionFailedCode].
	// Call made a VM execution, but it has failed.
	ErrExecutionFailed = NewErrorWithCode(ErrExecutionFailedCode, "Execution failed")
)

Functions

This section is empty.

Types

type BlockFilter 

type BlockFilter struct {
	Primary *int    `json:"primary,omitempty"`
	Since   *uint32 `json:"since,omitempty"`
	Till    *uint32 `json:"till,omitempty"`
}

BlockFilter is a wrapper structure for the block event filter. It allows to filter blocks by primary index and/or by block index (allowing blocks since/till the specified index inclusively). nil value treated as missing filter.

func (*BlockFilter) Copy added in v0.101.1 

func (f *BlockFilter) Copy() *BlockFilter

Copy creates a deep copy of the BlockFilter. It handles nil BlockFilter correctly.

type Error 

type Error struct {
	Code    int64  `json:"code"`
	Message string `json:"message"`
	Data    string `json:"data,omitempty"`
}

Error represents JSON-RPC 2.0 error type.

func NewError 

func NewError(code int64, message string, data string) *Error

NewError is an Error constructor that takes Error contents from its parameters.

func NewErrorWithCode added in v0.102.0 

func NewErrorWithCode(code int64, message string) *Error

NewErrorWithCode creates a new error with specified error code and error message.

func NewInternalServerError 

func NewInternalServerError(data string) *Error

NewInternalServerError creates a new error with code -32603.

func NewInvalidParamsError 

func NewInvalidParamsError(data string) *Error

NewInvalidParamsError creates a new error with code -32602.

func NewInvalidRequestError 

func NewInvalidRequestError(data string) *Error

NewInvalidRequestError creates a new error with code -32600.

func NewMethodNotFoundError 

func NewMethodNotFoundError(data string) *Error

NewMethodNotFoundError creates a new error with code -32601.

func NewParseError 

func NewParseError(data string) *Error

NewParseError creates a new error with code -32700.

func WrapErrorWithData 

func WrapErrorWithData(e *Error, data string) *Error

WrapErrorWithData returns copy of the given error with the specified data and cause. It does not modify the source error.

func (*Error) Error 

func (e *Error) Error() string

Error implements the error interface.

func (*Error) Is 

func (e *Error) Is(target error) bool

Is denotes whether the error matches the target one.

type EventID 

type EventID byte

EventID represents an event type happening on the chain. 

const (
	// InvalidEventID is an invalid event id that is the default value of
	// EventID. It's only used as an initial value similar to nil.
	InvalidEventID EventID = iota
	// BlockEventID is a `block_added` event.
	BlockEventID
	// TransactionEventID corresponds to the `transaction_added` event.
	TransactionEventID
	// NotificationEventID represents `notification_from_execution` events.
	NotificationEventID
	// ExecutionEventID is used for `transaction_executed` events.
	ExecutionEventID
	// NotaryRequestEventID is used for the `notary_request_event` event.
	NotaryRequestEventID
	// MissedEventID notifies user of missed events.
	MissedEventID EventID = 255
)

func GetEventIDFromString 

func GetEventIDFromString(s string) (EventID, error)

GetEventIDFromString converts an input string into an EventID if it's possible.

func (EventID) MarshalJSON 

func (e EventID) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaler interface.

func (EventID) String 

func (e EventID) String() string

String is a good old Stringer implementation.

func (*EventID) UnmarshalJSON 

func (e *EventID) UnmarshalJSON(b []byte) error

UnmarshalJSON implements the json.Unmarshaler interface.

type ExecutionFilter 

type ExecutionFilter struct {
	State     *string       `json:"state,omitempty"`
	Container *util.Uint256 `json:"container,omitempty"`
}

ExecutionFilter is a wrapper structure used for transaction and persisting scripts execution events. It allows to choose failing or successful transactions and persisting scripts based on their VM state and/or to choose execution event with the specified container. nil value treated as missing filter.

func (*ExecutionFilter) Copy added in v0.101.1 

func (f *ExecutionFilter) Copy() *ExecutionFilter

Copy creates a deep copy of the ExecutionFilter. It handles nil ExecutionFilter correctly. 

type Header struct {
	ID      json.RawMessage `json:"id"`
	JSONRPC string          `json:"jsonrpc"`
}

Header is a generic JSON-RPC 2.0 response header (ID and JSON-RPC version).

type HeaderAndError 

type HeaderAndError struct {
	Header
	Error *Error `json:"error,omitempty"`
}

HeaderAndError adds an Error (that can be empty) to the Header, it's used to construct type-specific responses.

type Notification 

type Notification struct {
	JSONRPC string  `json:"jsonrpc"`
	Event   EventID `json:"method"`
	Payload []any   `json:"params"`
}

Notification is a type used to represent wire format of events, they're special in that they look like requests but they don't have IDs and their "method" is actually an event name.

func (*Notification) EventID added in v0.99.5 

func (n *Notification) EventID() EventID

EventID implements EventContainer interface and returns notification ID.

func (*Notification) EventPayload added in v0.99.5 

func (n *Notification) EventPayload() any

EventPayload implements EventContainer interface and returns notification object.

type NotificationFilter 

type NotificationFilter struct {
	Contract *util.Uint160 `json:"contract,omitempty"`
	Name     *string       `json:"name,omitempty"`
}

NotificationFilter is a wrapper structure representing a filter used for notifications generated during transaction execution. Notifications can be filtered by contract hash and/or by name. nil value treated as missing filter.

func (*NotificationFilter) Copy added in v0.101.1 

func (f *NotificationFilter) Copy() *NotificationFilter

Copy creates a deep copy of the NotificationFilter. It handles nil NotificationFilter correctly.

type Request 

type Request struct {
	// JSONRPC is the protocol version, only valid when it contains JSONRPCVersion.
	JSONRPC string `json:"jsonrpc"`
	// Method is the method being called.
	Method string `json:"method"`
	// Params is a set of method-specific parameters passed to the call. They
	// can be anything as long as they can be marshaled to JSON correctly and
	// used by the method implementation on the server side. While JSON-RPC
	// technically allows it to be an object, all Neo calls expect params
	// to be an array.
	Params []any `json:"params"`
	// ID is an identifier associated with this request. JSON-RPC itself allows
	// any strings to be used for it as well, but NeoGo RPC client uses numeric
	// identifiers.
	ID uint64 `json:"id"`
}

Request represents JSON-RPC request. It's generic enough to be used in many generic JSON-RPC communication scenarios, yet at the same time it's tailored for NeoGo RPC Client needs.

type Response 

type Response struct {
	HeaderAndError
	Result json.RawMessage `json:"result,omitempty"`
}

Response represents a standard raw JSON-RPC 2.0 response: http://www.jsonrpc.org/specification#response_object.

type SignerWithWitness 

type SignerWithWitness struct {
	transaction.Signer
	transaction.Witness
}

SignerWithWitness represents transaction's signer with the corresponding witness.

func (*SignerWithWitness) MarshalJSON 

func (s *SignerWithWitness) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaler interface.

func (*SignerWithWitness) UnmarshalJSON 

func (s *SignerWithWitness) UnmarshalJSON(data []byte) error

UnmarshalJSON implements the json.Unmarshaler interface.

type TxFilter 

type TxFilter struct {
	Sender *util.Uint160 `json:"sender,omitempty"`
	Signer *util.Uint160 `json:"signer,omitempty"`
}

TxFilter is a wrapper structure for the transaction event filter. It allows to filter transactions by senders and/or signers. nil value treated as missing filter.

func (*TxFilter) Copy added in v0.101.1 

func (f *TxFilter) Copy() *TxFilter

Copy creates a deep copy of the TxFilter. It handles nil TxFilter correctly.

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