Question

我正在尝试通过Infura节点使用web3在我的智能合约（Ropsten）上调用函数。我已经在Metmask中创建了一个测试帐户，并导出了帐户地址和私钥。详细信息看起来正确，但是出现错误{"code":-32000,"message":"invalid sender"}。我猜这是交易签名的问题吗？

这是我的代码

const Web3 = require('web3');
const Tx = require('ethereumjs-tx').Transaction;
const fs = require('fs');

const pk = Buffer.from('PRIVATE KEY FROM METAMASK', 'hex')
const sourceAccount = 'ACCOUNT ADDRESS FROM METAMASK'
const web3 = new Web3(new Web3.providers.HttpProvider("https://ropsten.infura.io/v3/API_KEY"));
const consumerAddress = '0xc36577aa0171f649be6bd7205148ed83c07198ee';
web3.eth.defaultAccount = sourceAccount;


//Get Consumer contract instance
const consumerAbi = JSON.parse(fs.readFileSync('rental-contract-abi.json', 'utf8'));
let consumerContract = new web3.eth.Contract(consumerAbi, consumerAddress);
const myData = consumerContract.methods.checkDate("e716efba3b404da98e28faaa2939c0fd","2019-06-04","AU-NSW").encodeABI();
web3.eth.getTransactionCount(sourceAccount, (err, txCount) => {
    // Build the transaction
    const txObject = {
        nonce:    web3.utils.toHex(txCount),
        to:       consumerAddress,
        from: sourceAccount,
        chainId: 3,
        value:    web3.utils.toHex(web3.utils.toWei('0', 'ether')),
        gasLimit: web3.utils.toHex(2100000),
        gasPrice: web3.utils.toHex(web3.utils.toWei('6', 'gwei')),
        data: myData  
    }

    // Sign the transaction
    const tx = new Tx(txObject);
    tx.sign(pk);

    const feeCost = tx.getUpfrontCost()
    console.log('Total Amount of ETH needed:' + web3.utils.fromWei(feeCost.toString(), 'ether'))

    console.log('---Serialized TX----')
    console.log(tx.serialize().toString('hex'))
    console.log('--------------------')

    const serializedTx = tx.serialize();
    const raw = '0x' + serializedTx.toString('hex');
    
    // Broadcast the transaction
    const transaction = web3.eth.sendSignedTransaction(raw, (err, tx) => {
        console.log(tx);
        console.log(err);
    });
});

Answer 1

很难调试，请您尝试以下代码（tx签名对我来说很好）：

const Web3 = require('web3');
const fs = require('fs');
const web3 = new Web3(new Web3.providers.HttpProvider("https://ropsten.infura.io/v3/API_KEY"));

const consumerAbi = JSON.parse(fs.readFileSync('rental-contract-abi.json', 'utf8'));
let consumerContract = new web3.eth.Contract(consumerAbi, consumerAddress);
const myData = consumerContract.methods.checkDate("e716efba3b404da98e28faaa2939c0fd","2019-06-04","AU-NSW").encodeABI();

const from = 'ACCOUNT ADDRESS FROM METAMASK'
const privateKey = 'PRIVATE KEY FROM METAMASK'
const to = '0xc36577aa0171f649be6bd7205148ed83c07198ee'

const tx = {
    from,
    to,
    value: '0',
    gasPrice: web3.utils.toWei('6', 'gwei'),
    gas: 2100000,
    chainId: 3,
    nonce: await web3.eth.getTransactionCount(from,'pending'),
    data: myData
}

const signed = await web3.eth.accounts.signTransaction(tx, privateKey)
const rawTx = signed.rawTransaction

const sendRawTx = rawTx =>
  new Promise((resolve, reject) =>
    web3.eth
      .sendSignedTransaction(rawTx)
      .on('transactionHash', resolve)
      .on('error', reject)
  )

sendRawTx(rawTx).then(hash => console.log({hash}))

如果遇到错误，则可能是myData变量出错了。尝试发送没有任何数据的TX，以确保

Answer 2

您需要在签署交易时添加网络信息。请参阅最新的web3文档。将签名交易代码更改为：

connection.query(sql, function (error, results) {
    if (error) throw error;
    example(results);
});

Web3-发送交易导致“无效的发送者”

2 个答案: