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Cancel

TxTypeCancel 取消事务池中具有相同 nonce 的事务的执行。 当已提交的交易在一定时间内似乎未得到处理时，这种交易类型就很有用。

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

定义发送方、付费方地址和私人密钥

使用指定的 kairos 测试网 URL 设置提供程序。 以太坊中的提供者是访问区块链数据的只读抽象。

此外，您还可以将提供商 URL 从 kairos 更改为 quicknode

用私钥和提供商创建发送方的钱包

用私钥和提供商创建付费者的钱包

声明一个事务，其from字段为发送地址，type字段为TxType.FeeDelegatedCancel。·

用发送方钱包签署交易，并打印出发送方TxHashRLP

使用付费者的钱包将交易发送到区块链上。 函数 "sendTransactionAsFeePayer "会在发送者的签名上添加一个带有 FeePayer 私钥的签名，并将其传输到区块链网络。

如果已在区块链中完成发送，wait函数将返回发送回执。

TxFeeDelegatedCancelType.js

const ethers = require("ethers");

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

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

}