BatchRequest Timeout Issue When Querying Token Balances

[NongChen1223]

I am encountering a persistent issue with web3.BatchRequest where it consistently times out regardless of the query made to fetch token balances. Below are the steps and configurations I've tried to resolve the issue without success:

• I have tried switching among multiple RPC nodes, but the timeout error persists.
• I reduced the number of tokens queried in the batch to just one, but still, the timeout issue occurs.
• I have explicitly set a timeout parameter in the batch.execute() method.

const newTokenContract = (address: string) => {
    const contract = new web3.eth.Contract(ERC20ABI, address);
    return contract;
};
const createRequest = (item: TokensType, index: number,wallet:string): JsonRpcOptionalRequest => {
    const baseData: Partial<JsonRpcOptionalRequest> = {
        jsonrpc: "2.0",
        id: index,
    };
    return {
        ...baseData,
        method: "eth_call",
        params: [
            {
                form: "0x514910771af9ca656af840dff83e8264ecf986ca",
                to: item.address,
                data: newTokenContract(item.address).methods.balanceOf(wallet).encodeABI(),
            },
            "latest",
        ],
    };
};
const createTokenJsonRpcList = async <
    R extends JsonRpcResult = JsonRpcResult,
    E extends JsonRpcResult = JsonRpcResult,
>(list:any[],wallet:string):Promise<HoldType[] | []> => {
    try {
        const web3 = new Web3(ETH_RPC_URL);
        const batch = new web3.BatchRequest();
        list.forEach((item, i) => {
            batch.add(createRequest(item, i,wallet));
        });
        const jsonResponse = (await batch.execute({
            timeout:3000
        })) as JsonRpcBatchResponse<R, E>;
        const holdList =  jsonResponse.map<HoldType>(waitMapped).filter(predicate);
        return holdList
    }catch (err){
        console.log('createTokenJsonRpcList error!',err)
        return  []
    }
};
const createchunkJsonRpc = async (list:any,chunkSize:number)=>{
    const waitMapFn = (_: (typeof list)[number], index: number) => list.slice(index * chunkSize, (index + 1) * chunkSize)
    const chunkList:any[] = Array.from({length: Math.ceil(list.length / chunkSize)}, waitMapFn)
    return chunkList
}
const getWalletBalance = async (list:TokensType[],wallet:string,chunkSize:number = 50) => {
    const priceList = []
    const { name,balance } = await getEthBalance(wallet)
    priceList.push({
        name,
        balance
    })
    const chunkList = await createchunkJsonRpc(list,chunkSize)
    const promiseList = chunkList.map(async (item:any,index:number) => {
        return await createTokenJsonRpcList(item,wallet)
    })
    const result = await Promise.allSettled(promiseList)
    result.forEach(result => {
        if (result.status === "fulfilled") {
            result.value.length > 0 && priceList.push(...result.value)
        }
    });
}
getWalletBalance(Tokens,WALLET_ADDRESS,20)

Logs

\node_modules\web3-core\src\web3_batch_request.ts:125
promise.reject(new OperationAbortError(msg));
^
OperationAbortError: Batch request timeout
at Web3BatchRequest._abortAllRequests (\webDeveloper\node_modules\web3-core\src\web3_batch_request.ts:125:19)
at (\webDeveloper\node_modules\web3-core\src\web3_batch_request.ts:68:10) {
innerError: undefined,
code: 204
}

Environment

"@uniswap/v3-sdk": "^3.11.0",
"axios": "^1.6.8",
"ethers": "^6.10.0",
"https-proxy-agent": "^7.0.4",
"isomorphic-ws": "^5.0.0",
"tsx": "^4.7.1",
"typescript": "^5.3.3",
"web3": "^4.6.0",
"ws": "^8.16.0"

[SantiagoDevRel]

Hey @NongChen1223 thanks for sharing this issue, just to double check regarding the RPCs, did u make sure u are not exceeding the allowed requests?

• Have you tried making the call 1 by 1 interacting with the contract object instead? (just to see if it works)
• Make sure you change the word form to from in the eth_call params

Lmk if still doesn't work! thank u