invoke

Invoke allows for the generic execution of smart contracts on behalf of the user. It is reccommended to have a general understanding of the NEO blockchain, and to be able successfully use all other commands listed previously in this document before attempting a generic contract execution.

Input Arguments

Parameter	Description
scriptHash: string	Script hash of the smart contract to invoke
operation: string	Operation on the smart contract to call
args: Argument[]	Any input arguments for the operation
fee?: string	The parsed amount of network fee (in GAS) to include with transaction
extraSystemFee?: string	This fee will be added to system fee
overrideSystemFee?: string	This fee will override the system fee
broadcastOverride?: boolean	In the case that the dApp would like to be responsible for broadcasting the signed transaction rather than the wallet provider
signers: Signers[]	Sender and the effective scope of signature

Argument

Parameter	Description
type: 'String' | 'Boolean' | 'Hash160' | 'Hash256' | 'Integer' | 'ByteArray' | 'Array' | 'Address'	The type of the argument with you are using
value: any	String representation of the argument which you are using

In the case where the "broadcastOverride" input argument is set to True.

Parameter	Description
signedTx: string	The serialized signed transaction. Only returned if the broadcastOverride input argument was set to True

Error Response

Parameter	Description
type: string	The type of error which has occured
description: string	A description of the error which has occured
data: string	Any raw data associated with the error

Example

Request

neolineN3.invoke({
    scriptHash: '0x1415ab3b409a95555b77bc4ab6a7d9d7be0eddbd',
    operation: 'transfer',
    args: [
        {
            type: "Address",
            value: "NaUjKgf5vMuFt7Ffgfffcpc41uH3adx1jq",
        },
        {
            type: "Address",
            value: "NaUjKgf5vMuFt7Ffgfffcpc41uH3adx1jq",
        },
        {
            type: "Integer",
            value: "1",
        },
        {
            type: "Any",
            value: null,
        }
    ],
    fee: '0.0001',
    broadcastOverride: false,
    signers: [
        {
            account: "2cab903ff032ac693f8514581665be534beac39f",
            scopes: 16,
            allowedContracts: ["0x1415ab3b409a95555b77bc4ab6a7d9d7be0eddbd", "0xef4073a0f2b305a38ec4050e4d3d28bc40ea63f5"],
            allowedGroups: []
        }
    ]
})
.then(result => {
    console.log('Invoke transaction success!');
    console.log('Transaction ID: ' + result.txid);
    console.log('RPC node URL: ' + result.nodeURL);
})
.catch((error) => {
    const {type, description, data} = error;
    switch(type) {
        case 'NO_PROVIDER':
            console.log('No provider available.');
            break;
        case 'RPC_ERROR':
            console.log('There was an error when broadcasting this transaction to the network.');
            break;
        case 'CANCELED':
            console.log('The user has canceled this transaction.');
            break;
        default:
            // Not an expected error object.  Just write the error to the console.
            console.error(error);
            break;
    }
});

Response

{
    txid: '0xd6e4edeb66a75b79bec526d14664017eef9ccee5650c32facb1a4d4fe3640808',
    nodeURL: 'https://neo3-testnet.neoline.vip'
};