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排错：replacement fee too low

 2 years ago
source link: https://blog.dteam.top/posts/2022-02/replacement-fee-too-low.html
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排错：replacement fee too low

胡键 Posted at — Feb 15, 2022 阅读

调用合约方法却得到以下的错误信息：

Error: replacement fee too low (error={"reason":"processing response error","code":"SERVER_ERROR","body":"{\"jsonrpc\":\"2.0\",\"id\":109,\"error\":{\"code\":-32000,\"message\":\"replacement transaction underpriced\"}}","error":{"code":-32000},"requestBody":"{\"method\":\"eth_sendRawTransaction\",\"params\":[\"...\"],\"id\":109,\"jsonrpc\":\"2.0\"}","requestMethod":"POST","url":"..."}, method="sendTransaction", transaction="...", code=REPLACEMENT_UNDERPRICED, version=providers/5.5.2)
    at Logger.makeError (../node_modules/@ethersproject/logger/lib/index.js:199:1)
    at Logger.throwError (../node_modules/@ethersproject/logger/lib/index.js:208:1)
    at checkError (../node_modules/@ethersproject/providers/lib/json-rpc-provider.js:111:1)
    at InfuraProvider.<anonymous> (../node_modules/@ethersproject/providers/lib/json-rpc-provider.js:659:1)
    at step (../node_modules/@ethersproject/providers/lib/json-rpc-provider.js:48:1)
    at Object.throw (../node_modules/@ethersproject/providers/lib/json-rpc-provider.js:29:1)
    at rejected (../node_modules/@ethersproject/providers/lib/json-rpc-provider.js:21:1)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)

看似混乱的信息中（上面的错误消息已经做过必要的删减，但即使这样也让人看着头晕），其实已经有一个很明确的错误消息：replacement fee too low 。

这种错误是由于同一账户在较短时间内同时提交了两个 tx，导致前一个 tx 尚未来得及处理后一个 tx 就来了。这种情况下，一般就两种处理：cancel 或加速。

在 ethers 的这个 issue 链接中有对此的详细说明，请自行去了解。

显然这个问题跟并发相关，解决办法自然就是想办法使之串行化或者降低提交 tx 的速度，比如等待 tx 完成（见下例）之后再提交下一个 tx。至于具体解法，只能具体情况具体分析了。

const tx = await contract.writeMethod(...);
await tx.wait();

【附】若对 ethers.js 不熟，可以参见：


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