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Cancel

TxTypeCancel 取消事務池中具有相同 nonce 的事務的執行。 當已提交的交易在一定時間內似乎未得到處理時，這種交易類型就很有用。

導入 ethers 和 @kaiachain/ethers-ext 軟件包，在 ethers.js 上添加 kaia 功能

定義發送方、付費方地址和私人密鑰

使用指定的 kairos 測試網 URL 設置提供程序。 以太坊中的提供者是訪問區塊鏈數據的只讀抽象。

此外，您還可以將提供商 URL 從 kairos 更改為 quicknode

用私鑰和提供商創建發送方的錢包

用私鑰和提供商創建付費者的錢包

聲明一個事務，其from字段為發送地址，type字段為TxType.FeeDelegatedCancel。

用發送方錢包簽署交易，並打印出發送方TxHashRLP

使用付費者的錢包將交易發送到區塊鏈上。 函數 "sendTransactionAsFeePayer "會在發送者的簽名上添加一個帶有 FeePayer 私鑰的簽名，並將其傳輸到區塊鏈網絡。

如果已在區塊鏈中完成發送，wait函數將返回發送回執。

TxFeeDelegatedCancelType.js

const ethers = require("ethers");

const { Wallet, TxType, parseKlay } = require("@kaiachain/ethers-ext/v5");

const senderAddr = "0xa2a8854b1802d8cd5de631e690817c253d6a9153";

const senderPriv = "0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8";

const feePayerAddr = "0xcb0eb737dfda52756495a5e08a9b37aab3b271da";

const feePayerPriv = "0x9435261ed483b6efa3886d6ad9f64c12078a0e28d8d80715c773e16fc000cff4";

const provider = new ethers.providers.JsonRpcProvider("https://public-en-kairos.node.kaia.io");

const senderWallet = new Wallet(senderPriv, provider);

const feePayerWallet = new Wallet(feePayerPriv, provider);

async function main() {

const tx = {

type: TxType.FeeDelegatedCancel,

from: senderAddr,

};

// Sign transaction by sender

const populatedTx = await senderWallet.populateTransaction(tx);

const senderTxHashRLP = await senderWallet.signTransaction(populatedTx);

console.log("senderTxHashRLP", senderTxHashRLP);

// Sign and send transaction by fee payer

const sentTx = await feePayerWallet.sendTransactionAsFeePayer(senderTxHashRLP);

console.log("sentTx", sentTx.hash);

const receipt = await sentTx.wait();

console.log("receipt", receipt);

}

main();

output

❯ node TxFeeDelegatedCancelType.js

senderTxHashRLP 0x39f86a8203af850ba43b740082cd1494a2a8854b1802d8cd5de631e690817c253d6a9153f847f8458207f5a06c639b8828bb27b36b2575636b4ec9dd4c7de4820327fe158746d03b28b90d8ba0332b43ec974ecb3ea16593760cb6e139a95d4ce03847681fb053a00143eb91a1

sentTx 0xd81cd9190f2fd40f6b2e6472f91b95a1e09e2ad3dfc41a6b3458274eb5c9175c

receipt {

to: '0xA2a8854b1802D8Cd5De631E690817c253d6a9153',

from: '0xA2a8854b1802D8Cd5De631E690817c253d6a9153',

contractAddress: null,

transactionIndex: 1,

gasUsed: BigNumber { _hex: '0x7918', _isBigNumber: true },

logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',

blockHash: '0x02d655e716e1a5c8d497f66a6d80683c633d3e4002a9e26026f101983d951c1a',

transactionHash: '0xd81cd9190f2fd40f6b2e6472f91b95a1e09e2ad3dfc41a6b3458274eb5c9175c',

logs: [],

blockNumber: 148732476,

confirmations: 3,

cumulativeGasUsed: BigNumber { _hex: '0x034b1d', _isBigNumber: true },

effectiveGasPrice: BigNumber { _hex: '0x05d21dba00', _isBigNumber: true },

status: 1,

type: 0,

byzantium: true

}