🤔 Try to get latest eth_blockNumber via Cloudflare

[katopz]

Recap

This is working

const json = await fetch(new Request("https://cloudflare-eth.com", {
    method: "POST",
    body: JSON.stringify({
        "jsonrpc": "2.0",
        "method": "eth_blockNumber",
        "params": [],
        "id": 83
    }),
    headers: {
        "Content-Type": "application/json"
    }
})).then((resp) => {
    return resp.json()
});
console.log(json);

This is not

import { ethers } from "ethers";

const provider = new ethers.providers.CloudflareProvider();
const latestBlockNumber = await provider.getBlockNumber()
console.log(latestBlockNumber);

It throw

worker.js:1 Uncaught (in promise) Error: missing response (requestBody="{\"method\":\"eth_getBlockByNumber\",\"params\":[\"latest\",false],\"id\":42,\"jsonrpc\":\"2.0\"}", requestMethod="POST", serverError={}, url="https://cloudflare-eth.com/", code=SERVER_ERROR, version=web/5.3.0)

The question is...

1. Why this said eth_blockNumber not support in case it work? maybe outdated?

https://github.com/ethers-io/ethers.js/blob/master/packages/providers/src.ts/cloudflare-provider.ts#L33-L34

async perform(method: string, params: any): Promise<any> {
    // The Cloudflare provider does not support eth_blockNumber,
    // so we get the latest block and pull it from that
    if (method === "getBlockNumber") {
        const block = await super.perform("getBlock", { blockTag: "latest" });
        return block.number;
    }

    return super.perform(method, params);
}

2. Why it call eth_getBlockByNumber(judge from error above) instead of getBlockNumber when I call provider.getBlockNumber() method?

I just want to get latest eth block number via cloudflare worker + eth gateway with ether.js but not succeed yet.
Thanks in advance.

[ricmoo]

The Cloudflare backend has historically been unreliable and responds with non-standard results.

It’s a great question why they didn’t support blockNumber, it intermittently seems to, sometimes, but getBlockByNumber seemed to always work.

If the former works now, I can change it, but that doesn’t change the fact that the latter should still work, so I still have little faith in them as a backend. :(

I would highly recommend using the other backends instead. I won’t rely on Cloudflare. :s

[katopz]

Thanks! I will use more than one as your suggestions. 🙌