网络不支持EIP-1559：claimFaucet()转账失败问题求助

环境背景 #

• 自定义以太坊网络，RPC连接方式：const web3 = new Web3('http://146.190.XXX.XX:8546')
• Metamask可正常执行代币生成、网络代币转账、合约调用操作，Web3 RPC也支持合约执行

错误现象 #

调用claimFaucet()函数进行网络代币转账时，抛出错误：

Network doesn't support eip-1559

涉事函数代码 #

claimFaucet = async function (toAddress, pKey) {
  // body...
    const myAddress = '0xaC7E9A085A5D13d5C38XXXXXXXXXXXXXXXXXXXX' //TODO: replace this address with your own public address
   
    const nonce = await web3.eth.getTransactionCount(myAddress, 'latest');

    const transaction = {
     'to': toAddress, // faucet address to return eth
     'value': 10000000000000000,
     'gas': 426144,
     'maxFeePerGas': 10000000000,
     'nonce': nonce
    };
    console.log(nonce,transaction)
   
    const signedTx = await web3.eth.accounts.signTransaction(transaction, pKey);
    
    await web3.eth.sendSignedTransaction(signedTx.rawTransaction, function(error, hash){
      console.log(hash)
      return;
      
    });
}

创世文件内容 #

{
"config": {
"chainId": 416,
"homesteadBlock": 0,
"eip150Block": 0,
"eip155Block": 0,
"eip158Block": 0,
"eip1559Block": 0,
"byzantiumBlock": 0,
"constantinopleBlock": 0,
"petersburgBlock": 0,
"istanbulBlock": 0
},
"alloc" : {
  "0xF58bCF53e07a4f85e872346Ce603D2269Cc5Bb67": {"balance":"510000000000000000000000000"},
  "0xa583Eb6b4c29e047996D03Db2CC86573E16233c6": {"balance":"800000000000000000000000000"}
},
"coinbase" : "0x0000000000000000000000000000000000000000",
"difficulty" : "0x100000",
"extraData" : "",
"gasLimit" : "0x1000000",
"nonce" : "0x0000000000000042",
"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp" : "0x00"
}

解决方法 #

问题根源是交易参数使用了EIP-1559格式的maxFeePerGas，但当前网络实际未完全支持EIP-1559（Metamask会自动适配网络格式，手动构造交易则不会）。只需修改交易参数为传统格式即可：

1. 修改交易对象，移除maxFeePerGas，替换为gasPrice参数：

const transaction = {
 'to': toAddress, 
 'value': 10000000000000000,
 'gas': 426144,
 'gasPrice': 10000000000, // 替换原maxFeePerGas
 'nonce': nonce
};

2. 原理：改用gasPrice后，交易将以Legacy Transaction格式发送，完全适配当前网络的配置，避免EIP-1559兼容性问题。

内容的提问来源于stack exchange，提问作者Debo Karmakar