rpcclient

package
v0.101.3 Latest Latest
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 Go to latest Published: Jul 8, 2023 License: MIT Imports: 44 Imported by: 20

Documentation

Overview

Package rpcclient implements NEO-specific JSON-RPC 2.0 client.

This package itself is designed to be a thin layer on top of the regular JSON-RPC interface provided by Neo implementations. Therefore the set of methods provided by clients is exactly the same as available from servers and they use data types that directly correspond to JSON data exchanged. While this is the most powerful and direct interface, it at the same time is not very convenient for many purposes, like the most popular one --- performing test invocations and creating/sending transactions that will do something to the chain. Please check subpackages for more convenient APIs.

Subpackages

The overall structure can be seen as a number of layers built on top of rpcclient and on top of each other with each package and each layer solving different problems.

These layers are:

  • Basic RPC API, rpcclient package itself.

  • Generic invocation/transaction API represented by invoker, unwrap (auxiliary, but very convenient) and actor packages. These allow to perform test invocations with plain Go types, use historic states for these invocations, get the execution results from reader functions and create/send transactions that change something on-chain.

  • Standard-specific wrappers that are implemented in nep11 and nep17 packages (with common methods in neptoken). They implement the respective NEP-11 and NEP-17 APIs both for safe (read-only) and state-changing methods. Safe methods require an Invoker to be called, while Actor is used to create/send transactions.

  • Contract-specific wrappers for native contracts that include management, gas, neo, oracle, policy and rolemgmt packages for the respective native contracts. Complete contract functionality is exposed (reusing nep17 package for gas and neo).

  • Notary actor and contract, a bit special since it's a NeoGo protocol extension, but notary package provides both the notary native contract wrapper and a notary-specific actor implementation that allows to easily wrap any transaction into a notary request.

  • Non-native contract-specific wrappers, currently partially provided only for NNS contract (it's still in development), at the moment that's mostly an example of how contract-specific wrappers can be built for other dApps (reusing invoker/actor layers it's pretty easy).

Client

After creating a client instance with or without a ClientConfig you can interact with the NEO blockchain by its exposed methods.

Supported methods 

calculatenetworkfee
findstates
getapplicationlog
getbestblockhash
getblock
getblockcount
getblockhash
getblockheader
getblockheadercount
getcommittee
getconnectioncount
getcontractstate
getnativecontracts
getnep11balances
getnep11properties
getnep11transfers
getnep17balances
getnep17transfers
getpeers
getrawmempool
getrawtransaction
getstate
getstateheight
getstateroot
getstorage
gettransactionheight
getunclaimedgas
getnextblockvalidators
getversion
invokefunction
invokescript
invokecontractverify
sendrawtransaction
submitblock
submitoracleresponse
terminatesession
traverseiterator
validateaddress

Extensions: 

getblocksysfee
submitnotaryrequest

Unsupported methods 

claimgas
dumpprivkey
getbalance
getmetricblocktimestamp
getnewaddress
getwalletheight
importprivkey
listaddress
listplugins
sendfrom
sendmany
sendtoaddress
Example 
package main

import (
	"context"
	"fmt"
	"os"

	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
	"github.com/nspcc-dev/neo-go/pkg/rpcclient"
)

func main() {
	endpoint := "http://seed5.bridgeprotocol.io:10332"
	opts := rpcclient.Options{}

	c, err := rpcclient.New(context.TODO(), endpoint, opts)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	err = c.Init()
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	if err := c.Ping(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	addr, err := address.StringToUint160("ATySFJAbLW7QHsZGHScLhxq6EyNBxx3eFP")
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	resp, err := c.GetNEP17Balances(addr)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	fmt.Println(resp.Address)
	fmt.Println(resp.Balances)
}

Output:

Index

Examples

Constants

This section is empty.

Variables

View Source 
var ErrNilNotificationReceiver = errors.New("nil notification receiver")

ErrNilNotificationReceiver is returned when notification receiver channel is nil.

Functions

This section is empty.

Types

type Client 

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

Client represents the middleman for executing JSON RPC calls to remote NEO RPC nodes. Client is thread-safe and can be used from multiple goroutines.

func New 

func New(ctx context.Context, endpoint string, opts Options) (*Client, error)

New returns a new Client ready to use. You should call Init method to initialize stateroot setting for the network the client is operating on if you plan using GetBlock*.

func (*Client) AddNetworkFee deprecated 

func (c *Client) AddNetworkFee(tx *transaction.Transaction, extraFee int64, accs ...*wallet.Account) error

AddNetworkFee adds network fee for each witness script and optional extra network fee to transaction. `accs` is an array signer's accounts.

Deprecated: please use CalculateNetworkFee or actor.Actor. This method will be removed in future versions.

func (*Client) CalculateNetworkFee 

func (c *Client) CalculateNetworkFee(tx *transaction.Transaction) (int64, error)

CalculateNetworkFee calculates network fee for the transaction. The transaction may have empty witnesses for contract signers and may have only verification scripts filled for standard sig/multisig signers.

func (*Client) CalculateNotaryFee deprecated 

func (c *Client) CalculateNotaryFee(nKeys uint8) (int64, error)

CalculateNotaryFee calculates network fee for one dummy Notary witness and NotaryAssisted attribute with NKeys specified. The result should be added to the transaction's net fee for successful verification.

Deprecated: NeoGo calculatenetworkfee method handles notary fees as well since 0.99.3, so this method is just no longer needed and will be removed in future versions.

func (*Client) CalculateValidUntilBlock deprecated 

func (c *Client) CalculateValidUntilBlock() (uint32, error)

CalculateValidUntilBlock calculates ValidUntilBlock field for tx as current blockchain height + number of validators. Number of validators is the length of blockchain validators list got from GetNextBlockValidators() method. Validators count is being cached and updated every 100 blocks.

Deprecated: please use (*Actor).CalculateValidUntilBlock. This method will be removed in future versions.

func (*Client) Close 

func (c *Client) Close()

Close closes unused underlying networks connections.

func (*Client) Context added in v0.99.5 

func (c *Client) Context() context.Context

Context returns client instance context.

func (*Client) CreateNEP11TransferTx deprecated 

func (c *Client) CreateNEP11TransferTx(acc *wallet.Account, tokenHash util.Uint160,
	gas int64, cosigners []SignerAccount, args ...interface{}) (*transaction.Transaction, error)

CreateNEP11TransferTx creates an invocation transaction for the 'transfer' method of the given contract (token) to move the whole (or the specified amount of) NEP-11 token with the specified token ID to the given account and returns it. The returned transaction is not signed. CreateNEP11TransferTx is also a helper for TransferNEP11 and TransferNEP11D. `args` for TransferNEP11: to util.Uint160, tokenID string, data interface{}; `args` for TransferNEP11D: from, to util.Uint160, amount int64, tokenID string, data interface{}.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) CreateNEP17MultiTransferTx deprecated 

func (c *Client) CreateNEP17MultiTransferTx(acc *wallet.Account, gas int64,
	recipients []TransferTarget, cosigners []SignerAccount) (*transaction.Transaction, error)

CreateNEP17MultiTransferTx creates an invocation transaction for performing NEP-17 transfers from a single sender to multiple recipients with the given data and cosigners. The transaction sender is included with the CalledByEntry scope by default.

Deprecated: please use nep17 package (when transferring the same token) or smartcontract.Builder (when transferring multiple tokens), this method will be removed in future versions.

func (*Client) CreateNEP17TransferTx deprecated 

func (c *Client) CreateNEP17TransferTx(acc *wallet.Account, to util.Uint160,
	token util.Uint160, amount int64, gas int64, data interface{}, cosigners []SignerAccount) (*transaction.Transaction, error)

CreateNEP17TransferTx creates an invocation transaction for the 'transfer' method of the given contract (token) to move the specified amount of NEP-17 assets (in FixedN format using contract's number of decimals) to the given account and returns it. The returned transaction is not signed.

Deprecated: please use nep17 package, this method will be removed in future versions.

func (*Client) CreateTxFromScript deprecated 

func (c *Client) CreateTxFromScript(script []byte, acc *wallet.Account, sysFee, netFee int64,
	cosigners []SignerAccount) (*transaction.Transaction, error)

CreateTxFromScript creates transaction and properly sets cosigners and NetworkFee. If sysFee <= 0, it is determined via result of `invokescript` RPC. You should initialize network magic with Init before calling CreateTxFromScript.

Deprecated: please use actor.Actor API, this method will be removed in future versions.

func (*Client) Endpoint added in v0.101.1 

func (c *Client) Endpoint() string

Endpoint returns the client endpoint.

func (*Client) FindStates 

func (c *Client) FindStates(stateroot util.Uint256, historicalContractHash util.Uint160, historicalPrefix []byte,
	start []byte, maxCount *int) (result.FindStates, error)

FindStates returns historical contract storage item states by the given stateroot, historical contract hash and historical prefix. If `start` path is specified, items starting from `start` path are being returned (excluding item located at the start path). If `maxCount` specified, the maximum number of items to be returned equals to `maxCount`.

func (*Client) GetApplicationLog 

func (c *Client) GetApplicationLog(hash util.Uint256, trig *trigger.Type) (*result.ApplicationLog, error)

GetApplicationLog returns a contract log based on the specified txid.

func (*Client) GetBestBlockHash 

func (c *Client) GetBestBlockHash() (util.Uint256, error)

GetBestBlockHash returns the hash of the tallest block in the blockchain.

func (*Client) GetBlockByHash 

func (c *Client) GetBlockByHash(hash util.Uint256) (*block.Block, error)

GetBlockByHash returns a block by its hash. In-header stateroot option must be initialized with Init before calling this method.

func (*Client) GetBlockByHashVerbose 

func (c *Client) GetBlockByHashVerbose(hash util.Uint256) (*result.Block, error)

GetBlockByHashVerbose returns a block wrapper with additional metadata by its hash. In-header stateroot option must be initialized with Init before calling this method.

func (*Client) GetBlockByIndex 

func (c *Client) GetBlockByIndex(index uint32) (*block.Block, error)

GetBlockByIndex returns a block by its height. In-header stateroot option must be initialized with Init before calling this method.

func (*Client) GetBlockByIndexVerbose 

func (c *Client) GetBlockByIndexVerbose(index uint32) (*result.Block, error)

GetBlockByIndexVerbose returns a block wrapper with additional metadata by its height. In-header stateroot option must be initialized with Init before calling this method. NOTE: to get transaction.ID and transaction.Size, use t.Hash() and io.GetVarSize(t) respectively.

func (*Client) GetBlockCount 

func (c *Client) GetBlockCount() (uint32, error)

GetBlockCount returns the number of blocks in the blockchain.

func (*Client) GetBlockHash 

func (c *Client) GetBlockHash(index uint32) (util.Uint256, error)

GetBlockHash returns the hash value of the corresponding block based on the specified index.

func (*Client) GetBlockHeader 

func (c *Client) GetBlockHeader(hash util.Uint256) (*block.Header, error)

GetBlockHeader returns the corresponding block header information from a serialized hex string according to the specified script hash. In-header stateroot option must be initialized with Init before calling this method.

func (*Client) GetBlockHeaderCount 

func (c *Client) GetBlockHeaderCount() (uint32, error)

GetBlockHeaderCount returns the number of headers in the main chain.

func (*Client) GetBlockHeaderVerbose 

func (c *Client) GetBlockHeaderVerbose(hash util.Uint256) (*result.Header, error)

GetBlockHeaderVerbose returns the corresponding block header information from a Json format string according to the specified script hash. In-header stateroot option must be initialized with Init before calling this method.

func (*Client) GetBlockSysFee 

func (c *Client) GetBlockSysFee(index uint32) (fixedn.Fixed8, error)

GetBlockSysFee returns the system fees of the block based on the specified index. This method is only supported by NeoGo servers.

func (*Client) GetCandidateRegisterPrice deprecated 

func (c *Client) GetCandidateRegisterPrice() (int64, error)

GetCandidateRegisterPrice invokes `getRegisterPrice` method on native NEO contract.

Deprecated: please use neo subpackage. This method will be removed in future releases.

func (*Client) GetCandidates 

func (c *Client) GetCandidates() ([]result.Candidate, error)

GetCandidates returns the current list of NEO candidate node with voting data and validator status.

func (*Client) GetCommittee 

func (c *Client) GetCommittee() (keys.PublicKeys, error)

GetCommittee returns the current public keys of NEO nodes in the committee.

func (*Client) GetConnectionCount 

func (c *Client) GetConnectionCount() (int, error)

GetConnectionCount returns the current number of the connections for the node.

func (*Client) GetContractStateByAddressOrName 

func (c *Client) GetContractStateByAddressOrName(addressOrName string) (*state.Contract, error)

GetContractStateByAddressOrName queries contract information using the contract address or name. Notice that name-based queries work only for native contracts, non-native ones can't be requested this way.

func (*Client) GetContractStateByHash 

func (c *Client) GetContractStateByHash(hash util.Uint160) (*state.Contract, error)

GetContractStateByHash queries contract information according to the contract script hash.

func (*Client) GetContractStateByID 

func (c *Client) GetContractStateByID(id int32) (*state.Contract, error)

GetContractStateByID queries contract information according to the contract ID. Notice that this is supported by all servers only for native contracts, non-native ones can be requested only from NeoGo servers.

func (*Client) GetDesignatedByRole deprecated 

func (c *Client) GetDesignatedByRole(role noderoles.Role, index uint32) (keys.PublicKeys, error)

GetDesignatedByRole invokes `getDesignatedByRole` method on a native RoleManagement contract.

Deprecated: please use rolemgmt package.

func (*Client) GetExecFeeFactor deprecated 

func (c *Client) GetExecFeeFactor() (int64, error)

GetExecFeeFactor invokes `getExecFeeFactor` method on a native Policy contract.

Deprecated: please use policy subpackage.

func (*Client) GetFeePerByte deprecated 

func (c *Client) GetFeePerByte() (int64, error)

GetFeePerByte invokes `getFeePerByte` method on a native Policy contract.

Deprecated: please use policy subpackage.

func (*Client) GetGasPerBlock deprecated 

func (c *Client) GetGasPerBlock() (int64, error)

GetGasPerBlock invokes `getGasPerBlock` method on a native NEO contract.

Deprecated: please use neo subpackage. This method will be removed in future releases.

func (*Client) GetMaxNotValidBeforeDelta deprecated 

func (c *Client) GetMaxNotValidBeforeDelta() (int64, error)

GetMaxNotValidBeforeDelta invokes `getMaxNotValidBeforeDelta` method on a native Notary contract.

Deprecated: please use notary subpackage. This method will be removed in future versions.

func (*Client) GetNEP11Balances 

func (c *Client) GetNEP11Balances(address util.Uint160) (*result.NEP11Balances, error)

GetNEP11Balances is a wrapper for getnep11balances RPC.

func (*Client) GetNEP11Properties 

func (c *Client) GetNEP11Properties(asset util.Uint160, token []byte) (map[string]interface{}, error)

GetNEP11Properties is a wrapper for getnep11properties RPC. We recommend using nep11 package and Properties method there to receive proper VM types and work with them. This method is provided mostly for the sake of completeness. For well-known attributes like "description", "image", "name" and "tokenURI" it returns strings, while for all others []byte (which can be nil).

func (*Client) GetNEP11Transfers 

func (c *Client) GetNEP11Transfers(address util.Uint160, start, stop *uint64, limit, page *int) (*result.NEP11Transfers, error)

GetNEP11Transfers is a wrapper for getnep11transfers RPC. Address parameter is mandatory, while all others are optional. Limit and page parameters are only supported by NeoGo servers and can only be specified with start and stop.

func (*Client) GetNEP17Balances 

func (c *Client) GetNEP17Balances(address util.Uint160) (*result.NEP17Balances, error)

GetNEP17Balances is a wrapper for getnep17balances RPC.

func (*Client) GetNEP17Transfers 

func (c *Client) GetNEP17Transfers(address util.Uint160, start, stop *uint64, limit, page *int) (*result.NEP17Transfers, error)

GetNEP17Transfers is a wrapper for getnep17transfers RPC. Address parameter is mandatory while all the others are optional. Start and stop parameters are supported since neo-go 0.77.0 and limit and page since neo-go 0.78.0. These parameters are positional in the JSON-RPC call. For example, you can't specify the limit without specifying start/stop first.

func (*Client) GetNNSPrice deprecated 

func (c *Client) GetNNSPrice(nnsHash util.Uint160) (int64, error)

GetNNSPrice invokes `getPrice` method on a NeoNameService contract with the specified hash.

Deprecated: please use nns subpackage. This method will be removed in future versions.

func (*Client) GetNativeContractHash deprecated 

func (c *Client) GetNativeContractHash(name string) (util.Uint160, error)

GetNativeContractHash returns native contract hash by its name.

Deprecated: please use native contract subpackages that have hashes directly (gas, management, neo, notary, oracle, policy, rolemgmt) or GetContractStateByAddressOrName method that will return hash along with other data.

func (*Client) GetNativeContracts 

func (c *Client) GetNativeContracts() ([]state.NativeContract, error)

GetNativeContracts queries information about native contracts.

func (*Client) GetNetwork deprecated 

func (c *Client) GetNetwork() (netmode.Magic, error)

GetNetwork returns the network magic of the RPC node the client connected to. It requires Init to be done first, otherwise an error is returned.

Deprecated: please use GetVersion (it has the same data in the Protocol section) or actor subpackage. This method will be removed in future versions.

func (*Client) GetNextBlockValidators 

func (c *Client) GetNextBlockValidators() ([]result.Validator, error)

GetNextBlockValidators returns the current NEO consensus nodes information and voting data.

func (*Client) GetNotaryServiceFeePerKey deprecated 

func (c *Client) GetNotaryServiceFeePerKey() (int64, error)

GetNotaryServiceFeePerKey returns a reward per notary request key for the designated notary nodes. It doesn't cache the result.

Deprecated: please use the Notary contract wrapper from the notary subpackage. This method will be removed in future versions.

func (*Client) GetOraclePrice deprecated 

func (c *Client) GetOraclePrice() (int64, error)

GetOraclePrice invokes `getPrice` method on a native Oracle contract.

Deprecated: please use oracle subpackage.

func (*Client) GetPeers 

func (c *Client) GetPeers() (*result.GetPeers, error)

GetPeers returns a list of the nodes that the node is currently connected to/disconnected from.

func (*Client) GetRawMemPool 

func (c *Client) GetRawMemPool() ([]util.Uint256, error)

GetRawMemPool returns a list of unconfirmed transactions in the memory.

func (*Client) GetRawTransaction 

func (c *Client) GetRawTransaction(hash util.Uint256) (*transaction.Transaction, error)

GetRawTransaction returns a transaction by hash.

func (*Client) GetRawTransactionVerbose 

func (c *Client) GetRawTransactionVerbose(hash util.Uint256) (*result.TransactionOutputRaw, error)

GetRawTransactionVerbose returns a transaction wrapper with additional metadata by transaction's hash. NOTE: to get transaction.ID and transaction.Size, use t.Hash() and io.GetVarSize(t) respectively.

func (*Client) GetState 

func (c *Client) GetState(stateroot util.Uint256, historicalContractHash util.Uint160, historicalKey []byte) ([]byte, error)

GetState returns historical contract storage item state by the given stateroot, historical contract hash and historical item key.

func (*Client) GetStateHeight 

func (c *Client) GetStateHeight() (*result.StateHeight, error)

GetStateHeight returns the current validated and local node state height.

func (*Client) GetStateRootByBlockHash 

func (c *Client) GetStateRootByBlockHash(hash util.Uint256) (*state.MPTRoot, error)

GetStateRootByBlockHash returns the state root for the block with the specified hash.

func (*Client) GetStateRootByHeight 

func (c *Client) GetStateRootByHeight(height uint32) (*state.MPTRoot, error)

GetStateRootByHeight returns the state root for the specified height.

func (*Client) GetStorageByHash 

func (c *Client) GetStorageByHash(hash util.Uint160, key []byte) ([]byte, error)

GetStorageByHash returns the stored value according to the contract script hash and the stored key.

func (*Client) GetStorageByID 

func (c *Client) GetStorageByID(id int32, key []byte) ([]byte, error)

GetStorageByID returns the stored value according to the contract ID and the stored key.

func (*Client) GetStoragePrice deprecated 

func (c *Client) GetStoragePrice() (int64, error)

GetStoragePrice invokes `getStoragePrice` method on a native Policy contract.

Deprecated: please use policy subpackage.

func (*Client) GetTransactionHeight 

func (c *Client) GetTransactionHeight(hash util.Uint256) (uint32, error)

GetTransactionHeight returns the block index where the transaction is found.

func (*Client) GetUnclaimedGas 

func (c *Client) GetUnclaimedGas(address string) (result.UnclaimedGas, error)

GetUnclaimedGas returns the unclaimed GAS amount for the specified address.

func (*Client) GetVersion 

func (c *Client) GetVersion() (*result.Version, error)

GetVersion returns the version information about the queried node.

func (*Client) Init 

func (c *Client) Init() error

Init sets magic of the network client connected to, stateRootInHeader option and native NEO, GAS and Policy contracts scripthashes. This method should be called before any header- or block-related requests in order to deserialize responses properly.

func (*Client) InvokeAndPackIteratorResults deprecated 

func (c *Client) InvokeAndPackIteratorResults(contract util.Uint160, operation string, params []smartcontract.Parameter, signers []transaction.Signer, maxIteratorResultItems ...int) (*result.Invoke, error)

InvokeAndPackIteratorResults creates a script containing System.Contract.Call of the specified contract with the specified arguments. It assumes that the specified operation will return iterator. The script traverses the resulting iterator, packs all its values into array and pushes the resulting array on stack. Constructed script is invoked via `invokescript` JSON-RPC API using the provided signers. The result of the script invocation contains single array stackitem on stack if invocation HALTed. InvokeAndPackIteratorResults can be used to interact with JSON-RPC server where iterator sessions are disabled to retrieve iterator values via single `invokescript` JSON-RPC call. It returns maxIteratorResultItems items at max which is set to config.DefaultMaxIteratorResultItems by default.

Deprecated: please use more convenient and powerful invoker.Invoker interface with CallAndExpandIterator method. This method will be removed in future versions.

func (*Client) InvokeContractVerify 

func (c *Client) InvokeContractVerify(contract util.Uint160, params []smartcontract.Parameter, signers []transaction.Signer, witnesses ...transaction.Witness) (*result.Invoke, error)

InvokeContractVerify returns the results after calling `verify` method of the smart contract with the given parameters under verification trigger type. NOTE: this is test invoke and will not affect the blockchain.

func (*Client) InvokeContractVerifyAtHeight 

func (c *Client) InvokeContractVerifyAtHeight(height uint32, contract util.Uint160, params []smartcontract.Parameter, signers []transaction.Signer, witnesses ...transaction.Witness) (*result.Invoke, error)

InvokeContractVerifyAtHeight returns the results after calling `verify` method of the smart contract with the given parameters under verification trigger type at the blockchain state specified by the blockchain height. NOTE: this is test invoke and will not affect the blockchain.

func (*Client) InvokeContractVerifyWithState 

func (c *Client) InvokeContractVerifyWithState(stateOrBlock util.Uint256, contract util.Uint160, params []smartcontract.Parameter, signers []transaction.Signer, witnesses ...transaction.Witness) (*result.Invoke, error)

InvokeContractVerifyWithState returns the results after calling `verify` method of the smart contract with the given parameters under verification trigger type at the blockchain state specified by the state root or block hash. NOTE: this is test invoke and will not affect the blockchain.

func (*Client) InvokeFunction 

func (c *Client) InvokeFunction(contract util.Uint160, operation string, params []smartcontract.Parameter, signers []transaction.Signer) (*result.Invoke, error)

InvokeFunction returns the results after calling the smart contract scripthash with the given operation and parameters. NOTE: this is test invoke and will not affect the blockchain.

func (*Client) InvokeFunctionAtHeight 

func (c *Client) InvokeFunctionAtHeight(height uint32, contract util.Uint160, operation string, params []smartcontract.Parameter, signers []transaction.Signer) (*result.Invoke, error)

InvokeFunctionAtHeight returns the results after calling the smart contract with the given operation and parameters at the given blockchain state specified by the blockchain height. NOTE: this is test invoke and will not affect the blockchain.

func (*Client) InvokeFunctionWithState 

func (c *Client) InvokeFunctionWithState(stateOrBlock util.Uint256, contract util.Uint160, operation string, params []smartcontract.Parameter, signers []transaction.Signer) (*result.Invoke, error)

InvokeFunctionWithState returns the results after calling the smart contract with the given operation and parameters at the given blockchain state defined by the specified state root or block hash. NOTE: this is test invoke and will not affect the blockchain.

func (*Client) InvokeScript 

func (c *Client) InvokeScript(script []byte, signers []transaction.Signer) (*result.Invoke, error)

InvokeScript returns the result of the given script after running it true the VM. NOTE: This is a test invoke and will not affect the blockchain.

func (*Client) InvokeScriptAtHeight 

func (c *Client) InvokeScriptAtHeight(height uint32, script []byte, signers []transaction.Signer) (*result.Invoke, error)

InvokeScriptAtHeight returns the result of the given script after running it true the VM using the provided chain state retrieved from the specified chain height. NOTE: This is a test invoke and will not affect the blockchain.

func (*Client) InvokeScriptWithState 

func (c *Client) InvokeScriptWithState(stateOrBlock util.Uint256, script []byte, signers []transaction.Signer) (*result.Invoke, error)

InvokeScriptWithState returns the result of the given script after running it true the VM using the provided chain state retrieved from the specified state root or block hash. NOTE: This is a test invoke and will not affect the blockchain.

func (*Client) IsBlocked deprecated 

func (c *Client) IsBlocked(hash util.Uint160) (bool, error)

IsBlocked invokes `isBlocked` method on native Policy contract.

Deprecated: please use policy subpackage.

func (*Client) MultiTransferNEP17 deprecated 

func (c *Client) MultiTransferNEP17(acc *wallet.Account, gas int64, recipients []TransferTarget, cosigners []SignerAccount) (util.Uint256, error)

MultiTransferNEP17 is similar to TransferNEP17, buf allows to have multiple recipients.

Deprecated: please use nep17 package (when transferring the same token) or smartcontract.Builder (when transferring multiple tokens), this method will be removed in future versions.

func (*Client) NEP11BalanceOf deprecated 

func (c *Client) NEP11BalanceOf(tokenHash, owner util.Uint160) (int64, error)

NEP11BalanceOf invokes `balanceOf` NEP-11 method on the specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11DBalanceOf deprecated 

func (c *Client) NEP11DBalanceOf(tokenHash, owner util.Uint160, tokenID []byte) (int64, error)

NEP11DBalanceOf invokes `balanceOf` divisible NEP-11 method on a specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11DOwnerOf deprecated 

func (c *Client) NEP11DOwnerOf(tokenHash util.Uint160, tokenID []byte) (uuid.UUID, result.Iterator, error)

NEP11DOwnerOf returns iterator over the specified NEP-11 divisible token owners. First return value is the session ID, the second one is Iterator itself, the third one is an error. Use TraverseIterator method to traverse iterator values or TerminateSession to terminate opened iterator session. See TraverseIterator and TerminateSession documentation for more details.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11DUnpackedOwnerOf deprecated 

func (c *Client) NEP11DUnpackedOwnerOf(tokenHash util.Uint160, tokenID []byte) ([]util.Uint160, error)

NEP11DUnpackedOwnerOf returns list of the specified NEP-11 divisible token owners (config.DefaultMaxIteratorResultItems at max). It differs from NEP11DOwnerOf in that no iterator session is used to retrieve values from iterator. Instead, unpacking VM script is created and invoked via `invokescript` JSON-RPC call.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11Decimals deprecated 

func (c *Client) NEP11Decimals(tokenHash util.Uint160) (int64, error)

NEP11Decimals invokes `decimals` NEP-11 method on the specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11NDOwnerOf deprecated 

func (c *Client) NEP11NDOwnerOf(tokenHash util.Uint160, tokenID []byte) (util.Uint160, error)

NEP11NDOwnerOf invokes `ownerOf` non-divisible NEP-11 method with the specified token ID on the specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11Properties deprecated 

func (c *Client) NEP11Properties(tokenHash util.Uint160, tokenID []byte) (*stackitem.Map, error)

NEP11Properties invokes `properties` optional NEP-11 method on the specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11Symbol deprecated 

func (c *Client) NEP11Symbol(tokenHash util.Uint160) (string, error)

NEP11Symbol invokes `symbol` NEP-11 method on the specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11TokenInfo deprecated 

func (c *Client) NEP11TokenInfo(tokenHash util.Uint160) (*wallet.Token, error)

NEP11TokenInfo returns full NEP-11 token info.

Deprecated: please use Info method from the neptoken subpackage. This method will be removed in future versions.

func (*Client) NEP11Tokens deprecated 

func (c *Client) NEP11Tokens(tokenHash util.Uint160) (uuid.UUID, result.Iterator, error)

NEP11Tokens returns iterator over the tokens minted by the contract. First return value is the session ID, the second one is Iterator itself, the third one is an error. Use TraverseIterator method to traverse iterator values or TerminateSession to terminate opened iterator session. See TraverseIterator and TerminateSession documentation for more details.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11TokensOf deprecated 

func (c *Client) NEP11TokensOf(tokenHash util.Uint160, owner util.Uint160) (uuid.UUID, result.Iterator, error)

NEP11TokensOf returns iterator over token IDs for the specified owner of the specified NFT token. First return value is the session ID, the second one is Iterator itself, the third one is an error. Use TraverseIterator method to traverse iterator values or TerminateSession to terminate opened iterator session. See TraverseIterator and TerminateSession documentation for more details.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11TotalSupply deprecated 

func (c *Client) NEP11TotalSupply(tokenHash util.Uint160) (int64, error)

NEP11TotalSupply invokes `totalSupply` NEP-11 method on the specified contract.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11UnpackedTokens deprecated 

func (c *Client) NEP11UnpackedTokens(tokenHash util.Uint160) ([][]byte, error)

NEP11UnpackedTokens returns list of the tokens minted by the contract (config.DefaultMaxIteratorResultItems at max). It differs from NEP11Tokens in that no iterator session is used to retrieve values from iterator. Instead, unpacking VM script is created and invoked via `invokescript` JSON-RPC call.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP11UnpackedTokensOf deprecated 

func (c *Client) NEP11UnpackedTokensOf(tokenHash util.Uint160, owner util.Uint160) ([][]byte, error)

NEP11UnpackedTokensOf returns an array of token IDs for the specified owner of the specified NFT token (config.DefaultMaxIteratorResultItems at max). It differs from NEP11TokensOf in that no iterator session is used to retrieve values from iterator. Instead, unpacking VM script is created and invoked via `invokescript` JSON-RPC call.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) NEP17BalanceOf deprecated 

func (c *Client) NEP17BalanceOf(tokenHash, acc util.Uint160) (int64, error)

NEP17BalanceOf invokes `balanceOf` NEP-17 method on the specified contract.

Deprecated: please use nep17 package, this method will be removed in future versions. This method is also wrong since tokens can return values overflowing int64.

func (*Client) NEP17Decimals deprecated 

func (c *Client) NEP17Decimals(tokenHash util.Uint160) (int64, error)

NEP17Decimals invokes `decimals` NEP-17 method on the specified contract.

Deprecated: please use nep17 package, this method will be removed in future versions.

func (*Client) NEP17Symbol deprecated 

func (c *Client) NEP17Symbol(tokenHash util.Uint160) (string, error)

NEP17Symbol invokes `symbol` NEP-17 method on the specified contract.

Deprecated: please use nep17 package, this method will be removed in future versions.

func (*Client) NEP17TokenInfo deprecated 

func (c *Client) NEP17TokenInfo(tokenHash util.Uint160) (*wallet.Token, error)

NEP17TokenInfo returns full NEP-17 token info.

Deprecated: please use Info method from the neptoken subpackage. This method will be removed in future versions.

func (*Client) NEP17TotalSupply deprecated 

func (c *Client) NEP17TotalSupply(tokenHash util.Uint160) (int64, error)

NEP17TotalSupply invokes `totalSupply` NEP-17 method on the specified contract.

Deprecated: please use nep17 package, this method will be removed in future versions. This method is also wrong since tokens can return values overflowing int64.

func (*Client) NNSGetAllRecords deprecated 

func (c *Client) NNSGetAllRecords(nnsHash util.Uint160, name string) (uuid.UUID, result.Iterator, error)

NNSGetAllRecords returns iterator over records for a given name from NNS service. First return value is the session ID, the second one is Iterator itself, the third one is an error. Use TraverseIterator method to traverse iterator values or TerminateSession to terminate opened iterator session. See TraverseIterator and TerminateSession documentation for more details.

Deprecated: please use nns subpackage. This method will be removed in future versions.

func (*Client) NNSIsAvailable deprecated 

func (c *Client) NNSIsAvailable(nnsHash util.Uint160, name string) (bool, error)

NNSIsAvailable invokes `isAvailable` method on a NeoNameService contract with the specified hash.

Deprecated: please use nns subpackage. This method will be removed in future versions.

func (*Client) NNSResolve deprecated 

func (c *Client) NNSResolve(nnsHash util.Uint160, name string, typ nns.RecordType) (string, error)

NNSResolve invokes `resolve` method on a NameService contract with the specified hash.

Deprecated: please use nns subpackage. This method will be removed in future versions.

func (*Client) NNSUnpackedGetAllRecords deprecated 

func (c *Client) NNSUnpackedGetAllRecords(nnsHash util.Uint160, name string) ([]nns.RecordState, error)

NNSUnpackedGetAllRecords returns a set of records for a given name from NNS service (config.DefaultMaxIteratorResultItems at max). It differs from NNSGetAllRecords in that no iterator session is used to retrieve values from iterator. Instead, unpacking VM script is created and invoked via `invokescript` JSON-RPC call.

Deprecated: please use nns subpackage. This method will be removed in future versions.

func (*Client) Ping 

func (c *Client) Ping() error

Ping attempts to create a connection to the endpoint and returns an error if there is any.

func (*Client) SendRawTransaction 

func (c *Client) SendRawTransaction(rawTX *transaction.Transaction) (util.Uint256, error)

SendRawTransaction broadcasts the given transaction to the Neo network. It always returns transaction hash, when successful (no error) this is the hash returned from server, when not it's a locally calculated rawTX hash.

func (*Client) SignAndPushInvocationTx deprecated 

func (c *Client) SignAndPushInvocationTx(script []byte, acc *wallet.Account, sysfee int64, netfee fixedn.Fixed8, cosigners []SignerAccount) (util.Uint256, error)

SignAndPushInvocationTx signs and pushes the given script as an invocation transaction using the given wif to sign it and the given cosigners to cosign it if possible. It spends the amount of gas specified. It returns a hash of the invocation transaction and an error. If one of the cosigners accounts is neither contract-based nor unlocked, an error is returned.

Deprecated: please use actor.Actor API, this method will be removed in future versions.

func (*Client) SignAndPushP2PNotaryRequest deprecated 

func (c *Client) SignAndPushP2PNotaryRequest(mainTx *transaction.Transaction, fallbackScript []byte, fallbackSysFee int64, fallbackNetFee int64, fallbackValidFor uint32, acc *wallet.Account) (*payload.P2PNotaryRequest, error)

SignAndPushP2PNotaryRequest creates and pushes a P2PNotary request constructed from the main and fallback transactions using the given wif to sign it. It returns the request and an error. Fallback transaction is constructed from the given script using the amount of gas specified. For successful fallback transaction validation at least 2*transaction.NotaryServiceFeePerKey GAS should be deposited to the Notary contract. Main transaction should be constructed by the user. Several rules should be met for successful main transaction acceptance:

  1. Native Notary contract should be a signer of the main transaction.
  2. Notary signer should have None scope.
  3. Main transaction should have dummy contract witness for Notary signer.
  4. Main transaction should have NotaryAssisted attribute with NKeys specified.
  5. NotaryAssisted attribute and dummy Notary witness (as long as the other incomplete witnesses) should be paid for. Use CalculateNotaryWitness to calculate the amount of network fee to pay for the attribute and Notary witness.
  6. Main transaction either shouldn't have all witnesses attached (in this case none of them can be multisignature), or it only should have a partial multisignature.

Note: client should be initialized before SignAndPushP2PNotaryRequest call.

Deprecated: please use Actor from the notary subpackage. This method will be deleted in future versions.

func (*Client) SignAndPushTx deprecated 

func (c *Client) SignAndPushTx(tx *transaction.Transaction, acc *wallet.Account, cosigners []SignerAccount) (util.Uint256, error)

SignAndPushTx signs the given transaction using the given wif and cosigners and pushes it to the chain. It returns a hash of the transaction and an error. If one of the cosigners accounts is neither contract-based nor unlocked, an error is returned.

Deprecated: please use actor.Actor API, this method will be removed in future versions.

func (*Client) StateRootInHeader deprecated 

func (c *Client) StateRootInHeader() (bool, error)

StateRootInHeader returns true if the state root is contained in the block header. You should initialize Client cache with Init() before calling StateRootInHeader.

Deprecated: please use GetVersion (it has the same data in the Protocol section). This method will be removed in future versions.

func (*Client) SubmitBlock 

func (c *Client) SubmitBlock(b block.Block) (util.Uint256, error)

SubmitBlock broadcasts a raw block over the NEO network.

func (*Client) SubmitP2PNotaryRequest 

func (c *Client) SubmitP2PNotaryRequest(req *payload.P2PNotaryRequest) (util.Uint256, error)

SubmitP2PNotaryRequest submits given P2PNotaryRequest payload to the RPC node.

func (*Client) SubmitRawOracleResponse 

func (c *Client) SubmitRawOracleResponse(ps []interface{}) error

SubmitRawOracleResponse submits a raw oracle response to the oracle node. Raw params are used to avoid excessive marshalling.

func (*Client) TerminateSession 

func (c *Client) TerminateSession(sessionID uuid.UUID) (bool, error)

TerminateSession tries to terminate the specified session and returns `true` iff the specified session was found on server.

func (*Client) TransferNEP11 deprecated 

func (c *Client) TransferNEP11(acc *wallet.Account, to util.Uint160,
	tokenHash util.Uint160, tokenID string, data interface{}, gas int64, cosigners []SignerAccount) (util.Uint256, error)

TransferNEP11 creates an invocation transaction that invokes 'transfer' method on the given token to move the whole NEP-11 token with the specified token ID to the given account and sends it to the network returning just a hash of it.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) TransferNEP11D deprecated 

func (c *Client) TransferNEP11D(acc *wallet.Account, to util.Uint160,
	tokenHash util.Uint160, amount int64, tokenID []byte, data interface{}, gas int64, cosigners []SignerAccount) (util.Uint256, error)

TransferNEP11D creates an invocation transaction that invokes 'transfer' method on the given token to move the specified amount of divisible NEP-11 assets (in FixedN format using contract's number of decimals) to the given account and sends it to the network returning just a hash of it.

Deprecated: please use nep11 package, this method will be removed in future versions.

func (*Client) TransferNEP17 deprecated 

func (c *Client) TransferNEP17(acc *wallet.Account, to util.Uint160, token util.Uint160,
	amount int64, gas int64, data interface{}, cosigners []SignerAccount) (util.Uint256, error)

TransferNEP17 creates an invocation transaction that invokes 'transfer' method on the given token to move the specified amount of NEP-17 assets (in FixedN format using contract's number of decimals) to the given account with the data specified and sends it to the network returning just a hash of it. Cosigners argument specifies a set of the transaction cosigners (may be nil or may include sender) with a proper scope and the accounts to cosign the transaction. If cosigning is impossible (e.g. due to locked cosigner's account) an error is returned.

Deprecated: please use nep17 package, this method will be removed in future versions.

func (*Client) TraverseIterator 

func (c *Client) TraverseIterator(sessionID, iteratorID uuid.UUID, maxItemsCount int) ([]stackitem.Item, error)

TraverseIterator returns a set of iterator values (maxItemsCount at max) for the specified iterator and session. If result contains no elements, then either Iterator has no elements or session was expired and terminated by the server. If maxItemsCount is non-positive, then config.DefaultMaxIteratorResultItems iterator values will be returned using single `traverseiterator` call. Note that iterator session lifetime is restricted by the RPC-server configuration and is being reset each time iterator is accessed. If session won't be accessed within session expiration time, then it will be terminated by the RPC-server automatically.

func (*Client) ValidateAddress 

func (c *Client) ValidateAddress(address string) error

ValidateAddress verifies that the address is a correct NEO address. Consider using address package instead to do it locally.

type Internal added in v0.101.1 

type Internal struct {
	WSClient
	// contains filtered or unexported fields
}

Internal is an experimental "local" client that does not connect to RPC via network. It's made for deeply integrated applications like NeoFS that have blockchain running in the same process, so use it only if you know what you're doing. It provides the same interface WSClient does.

func NewInternal added in v0.101.1 

func NewInternal(ctx context.Context, register InternalHook) (*Internal, error)

NewInternal creates an instance of internal client. It accepts a method provided by RPC server.

type InternalHook added in v0.101.1 

type InternalHook func(context.Context, chan<- neorpc.Notification) func(*neorpc.Request) (*neorpc.Response, error)

InternalHook is a function signature that is required to create a local client (see NewInternal). It performs registration of local client's event channel and returns a request handler function.

type Notification 

type Notification struct {
	Type  neorpc.EventID
	Value interface{}
}

Notification represents a server-generated notification for client subscriptions. Value can be one of *block.Block, *state.AppExecResult, *state.ContainedNotificationEvent *transaction.Transaction or *subscriptions.NotaryRequestEvent based on Type.

func (Notification) EventID added in v0.99.5 

func (n Notification) EventID() neorpc.EventID

EventID implements Container interface and returns notification ID.

func (Notification) EventPayload added in v0.99.5 

func (n Notification) EventPayload() interface{}

EventPayload implements Container interface and returns notification object.

type Options 

type Options struct {
	// Cert is a client-side certificate, it doesn't work at the moment along
	// with the other two options below.
	Cert           string
	Key            string
	CACert         string
	DialTimeout    time.Duration
	RequestTimeout time.Duration
	// Limit total number of connections per host. No limit by default.
	MaxConnsPerHost int
}

Options defines options for the RPC client. All values are optional. If any duration is not specified, a default of 4 seconds will be used.

type SignerAccount 

type SignerAccount struct {
	Signer  transaction.Signer
	Account *wallet.Account
}

SignerAccount represents combination of the transaction.Signer and the corresponding wallet.Account.

type TransferTarget 

type TransferTarget struct {
	Token   util.Uint160
	Address util.Uint160
	Amount  int64
	Data    interface{}
}

TransferTarget represents target address, token amount and data for transfer.

type WSClient 

type WSClient struct {
	Client
	// Notifications is a channel that is used to send events received from
	// the server. Client's code is supposed to be reading from this channel if
	// it wants to use subscription mechanism. Failing to do so will cause
	// WSClient to block even regular requests. This channel is not buffered.
	// In case of protocol error or upon connection closure, this channel will
	// be closed, so make sure to handle this. Make sure you're not changing the
	// received notifications, as it may affect the functionality of other
	// notification receivers.
	//
	// Deprecated: please, use custom channels with ReceiveBlocks, ReceiveTransactions,
	// ReceiveExecutionNotifications, ReceiveExecutions, ReceiveNotaryRequests
	// methods to subscribe for notifications. This field will be removed in future
	// versions.
	Notifications chan Notification
	// contains filtered or unexported fields
}

WSClient is a websocket-enabled RPC client that can be used with appropriate servers. It's supposed to be faster than Client because it has persistent connection to the server and at the same time it exposes some functionality that is only provided via websockets (like event subscription mechanism). WSClient is thread-safe and can be used from multiple goroutines to perform RPC requests.

It exposes a set of Receive* methods with the same behaviour pattern that is caused by the fact that the client itself receives every message from the server via a single channel. This includes any subscriptions and any replies to ordinary requests at the same. The client then routes these messages to channels provided on subscription (passed to Receive*) or to the respective receivers (API callers) if it's an ordinary JSON-RPC reply. While synchronous API users are blocked during their calls and wake up on reply, subscription channels must be read from to avoid blocking the client. Failure to do so will make WSClient wait for the channel reader to get the event and while it waits every other messages (subscription-related or request replies) will be blocked. This also means that subscription channel must be properly drained after unsubscription.

Any received subscription items (blocks/transactions/nofitications) are passed via pointers for efficiency, but the actual structures MUST NOT be changed, as it may affect the functionality of other notification receivers. If multiple subscriptions share the same receiver channel, then matching notification is only sent once per channel. The receiver channel will be closed by the WSClient immediately after MissedEvent is received from the server; no unsubscription is performed in this case, so it's the user responsibility to unsubscribe.

func NewWS 

func NewWS(ctx context.Context, endpoint string, opts Options) (*WSClient, error)

NewWS returns a new WSClient ready to use (with established websocket connection). You need to use websocket URL for it like `ws://1.2.3.4/ws`. You should call Init method to initialize the network magic the client is operating on.

func (*WSClient) Close 

func (c *WSClient) Close()

Close closes connection to the remote side rendering this client instance unusable.

func (*WSClient) Context added in v0.99.5 

func (c *WSClient) Context() context.Context

Context returns WSClient Cancel context that will be terminated on Client shutdown.

func (*WSClient) GetError 

func (c *WSClient) GetError() error

GetError returns the reason of WS connection closing. It returns nil in case if connection was closed by the use via Close() method calling.

func (*WSClient) ReceiveBlocks added in v0.99.5 

func (c *WSClient) ReceiveBlocks(flt *neorpc.BlockFilter, rcvr chan<- *block.Block) (string, error)

ReceiveBlocks registers provided channel as a receiver for the new block events. Events can be filtered by the given BlockFilter, nil value doesn't add any filter. See WSClient comments for generic Receive* behaviour details.

func (*WSClient) ReceiveExecutionNotifications added in v0.99.5 

func (c *WSClient) ReceiveExecutionNotifications(flt *neorpc.NotificationFilter, rcvr chan<- *state.ContainedNotificationEvent) (string, error)

ReceiveExecutionNotifications registers provided channel as a receiver for execution events. Events can be filtered by the given NotificationFilter, nil value doesn't add any filter. See WSClient comments for generic Receive* behaviour details.

func (*WSClient) ReceiveExecutions added in v0.99.5 

func (c *WSClient) ReceiveExecutions(flt *neorpc.ExecutionFilter, rcvr chan<- *state.AppExecResult) (string, error)

ReceiveExecutions registers provided channel as a receiver for application execution result events generated during transaction execution. Events can be filtered by the given ExecutionFilter, nil value doesn't add any filter. See WSClient comments for generic Receive* behaviour details.

func (*WSClient) ReceiveNotaryRequests added in v0.99.5 

func (c *WSClient) ReceiveNotaryRequests(flt *neorpc.TxFilter, rcvr chan<- *result.NotaryRequestEvent) (string, error)

ReceiveNotaryRequests registers provided channel as a receiver for notary request payload addition or removal events. Events can be filtered by the given TxFilter where sender corresponds to notary request sender (the second fallback transaction signer) and signer corresponds to main transaction signers. nil value doesn't add any filter. See WSClient comments for generic Receive* behaviour details.

func (*WSClient) ReceiveTransactions added in v0.99.5 

func (c *WSClient) ReceiveTransactions(flt *neorpc.TxFilter, rcvr chan<- *transaction.Transaction) (string, error)

ReceiveTransactions registers provided channel as a receiver for new transaction events. Events can be filtered by the given TxFilter, nil value doesn't add any filter. See WSClient comments for generic Receive* behaviour details.

func (*WSClient) SubscribeForExecutionNotifications deprecated 

func (c *WSClient) SubscribeForExecutionNotifications(contract *util.Uint160, name *string) (string, error)

SubscribeForExecutionNotifications adds subscription for notifications generated during transaction execution to this instance of the client. It can be filtered by the contract's hash (that emits notifications), nil value puts no such restrictions.

Deprecated: please, use ReceiveExecutionNotifications. This method will be removed in future versions.

func (*WSClient) SubscribeForNewBlocks deprecated 

func (c *WSClient) SubscribeForNewBlocks(primary *int) (string, error)

SubscribeForNewBlocks adds subscription for new block events to this instance of the client. It can be filtered by primary consensus node index, nil value doesn't add any filters.

Deprecated: please, use ReceiveBlocks. This method will be removed in future versions.

func (*WSClient) SubscribeForNewTransactions deprecated 

func (c *WSClient) SubscribeForNewTransactions(sender *util.Uint160, signer *util.Uint160) (string, error)

SubscribeForNewTransactions adds subscription for new transaction events to this instance of the client. It can be filtered by the sender and/or the signer, nil value is treated as missing filter.

Deprecated: please, use ReceiveTransactions. This method will be removed in future versions.

func (*WSClient) SubscribeForNotaryRequests deprecated 

func (c *WSClient) SubscribeForNotaryRequests(sender *util.Uint160, mainSigner *util.Uint160) (string, error)

SubscribeForNotaryRequests adds subscription for notary request payloads addition or removal events to this instance of client. It can be filtered by request sender's hash, or main tx signer's hash, nil value puts no such restrictions.

Deprecated: please, use ReceiveNotaryRequests. This method will be removed in future versions.

func (*WSClient) SubscribeForTransactionExecutions deprecated 

func (c *WSClient) SubscribeForTransactionExecutions(state *string) (string, error)

SubscribeForTransactionExecutions adds subscription for application execution results generated during transaction execution to this instance of the client. It can be filtered by state (HALT/FAULT) to check for successful or failing transactions, nil value means no filtering.

Deprecated: please, use ReceiveExecutions. This method will be removed in future versions.

func (*WSClient) Unsubscribe 

func (c *WSClient) Unsubscribe(id string) error

Unsubscribe removes subscription for the given event stream. It will return an error in case if there's no subscription with the provided ID. Call to Unsubscribe doesn't block notifications receive process for given subscriber, thus, ensure that subscriber channel is properly drained while unsubscription is being performed. Failing to do so will cause WSClient to block even regular requests. You may probably need to run unsubscription process in a separate routine (in parallel with notification receiver routine) to avoid Client's notification dispatcher blocking.

func (*WSClient) UnsubscribeAll 

func (c *WSClient) UnsubscribeAll() error

UnsubscribeAll removes all active subscriptions of the current client. It copies the list of subscribers in order not to hold the lock for the whole execution time and tries to unsubscribe from us many feeds as possible returning the chunk of unsubscription errors afterwards. Call to UnsubscribeAll doesn't block notifications receive process for given subscribers, thus, ensure that subscribers channels are properly drained while unsubscription is being performed. Failing to do so will cause WSClient to block even regular requests. You may probably need to run unsubscription process in a separate routine (in parallel with notification receiver routines) to avoid Client's notification dispatcher blocking.

Source Files

View all Source files

Directories

Path Synopsis
Package actor provides a way to change chain state via RPC client.
 Package actor provides a way to change chain state via RPC client.
Package gas provides a convenience wrapper for GAS contract to use it via RPC.
 Package gas provides a convenience wrapper for GAS contract to use it via RPC.
Package invoker provides a convenient wrapper to perform test calls via RPC client.
 Package invoker provides a convenient wrapper to perform test calls via RPC client.
Package management provides an RPC wrapper for the native ContractManagement contract.
 Package management provides an RPC wrapper for the native ContractManagement contract.
Package neo provides an RPC-based wrapper for the NEOToken contract.
 Package neo provides an RPC-based wrapper for the NEOToken contract.
Package nep11 contains RPC wrappers for NEP-11 contracts.
 Package nep11 contains RPC wrappers for NEP-11 contracts.
Package nep17 contains RPC wrappers to work with NEP-17 contracts.
 Package nep17 contains RPC wrappers to work with NEP-17 contracts.
Package neptoken contains RPC wrapper for common NEP-11 and NEP-17 methods.
 Package neptoken contains RPC wrapper for common NEP-11 and NEP-17 methods.
Package nns provide some RPC wrappers for the non-native NNS contract.
 Package nns provide some RPC wrappers for the non-native NNS contract.
Package notary provides an RPC-based wrapper for the Notary subsystem.
 Package notary provides an RPC-based wrapper for the Notary subsystem.
Package oracle allows to work with the native OracleContract contract via RPC.
 Package oracle allows to work with the native OracleContract contract via RPC.
Package policy allows to work with the native PolicyContract contract via RPC.
 Package policy allows to work with the native PolicyContract contract via RPC.
Package rolemgmt allows to work with the native RoleManagement contract via RPC.
 Package rolemgmt allows to work with the native RoleManagement contract via RPC.
Package unwrap provides a set of proxy methods to process invocation results.
 Package unwrap provides a set of proxy methods to process invocation results.

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