queryFilter doesn't return any transactions

[crapthings]

Ethers Version

5.x.x

Search Terms

queryFilter

Describe the Problem

expect query results with BSC but there are not

i want to filter topics by "to" address, but after add "to" to topics param, then no results return

const t = txs.queryFilter({
    address: '0x55d398326f99059ff775485246999027b3197955',
    topics: [
      ethers.utils.id('Transfer(address,address,uint256)'),
      null,
    ]
  }, provider.getBlockNumber().then((b) => b - 200), 'latest').then((resp) => {
    console.log(resp)
  }).catch(console.log)

Code Snippet

const ethers = require('ethers')

const provider = new ethers.providers.JsonRpcProvider('https://bsc-dataseed.binance.org')
const abi = ["event Transfer(bytes32 indexed node, address owner)"]
const txs = new ethers.Contract('0x55d398326f99059ff775485246999027b3197955', abi, provider)


setInterval(() => {
  provider.getBlockNumber().then(console.log)

  const t = txs.queryFilter({
    address: '0x55d398326f99059ff775485246999027b3197955',
    topics: [
      ethers.utils.id('Transfer(address,address,uint256)'),
      null,
      ethers.utils.hexZeroPad('0x7BAcA1ddad175C8da2C554A518Ba6b0AFC32E658', 32)
    ]
  }, provider.getBlockNumber().then((b) => b - 200), 'latest').then((resp) => {
    console.log(resp)
  }).catch(console.log)
}, 5000)

### Contract ABI

```shell
["event Transfer(bytes32 indexed node, address owner)"]

Errors

no results return

Environment

node.js (v12 or newer)

Environment (Other)

No response

[zemse]

You can checkout docs for queryFilter here.

const abi = ["event Transfer(bytes32 indexed node, address owner)"]
const contract = new ethers.Contract('0x55d398326f99059ff775485246999027b3197955', abi, provider)

const filter = contract.filters.Transfer();
const events = await contract.queryFilter(filter)

Also from your snipper seems you want to filter by owner param in your event? But sinceowner is not indexed you would not be able to filter that param.

If you use low level API and forcefully pass in a topic, it won't match to any logs hence it will give you empty array.

[arnaudjnn]

I have the same issue. Why the owner is not indexed? What's it the best way to filter all the transaction by sender address?

[ricmoo]

@arnaudjnn That is not possible with a normal Ethereum node. You would need to use a service like Etherscan, which provides a history API (I.E. provider.getHistory). But normal Ethereum nodes do not index that data.

[ricmoo]

Also keep in mind BSC does not correctly implement consistent query execution; you just wait some amount of time after a block before events are index and will be returned in a query. The built-in event querying (I.e. provider.on) have additional logic to track this over time, but if you query a point-in-time, you have to keep that in mind.

But if your event does not index a field, it cannot be filtered on that field.

[arnaudjnn]

Thanks @ricmoo,

If I don't want instant events, is it OK to use contract.queryFilter over Etherscan API? Do you know the "amount of time"?

[zemse]

contract.queryFilter uses get logs internally and it can take time depending on the node, its fine for ethereum mainnet but costly for fast block chains like bsc matic. Etherscan's API gets logs from their database which is quite faster.

Also, ethereum is looking to get rid of logs or at least after the state expiry is implemented, ancient logs (like older than 2 years) won't be available with most nodes. But yeah that's a future thing that's not decided.

[Nisthar]

@zemse isn't bsc the mainnet? wdym by mainnet?

[zemse]

By "mainnet" I meant Ethereum mainnet. Sorry for the confusion, lemme edit the above msg.

[georgeportillo]

What if I want to listen to a custom event and not "Transfer"? I can't seem to get it to work when I pass it the positional parameters