No eth_getTransactionByBlockNumberAndIndex is sent to my RPC

[megtog]

I'm playing with this script (src/chains/ethereum/ethereum/tests/forking/myscript.ts). My plan is to understand how mainnet fork works so I just put my script in the src directory.

There are eth_blockNumber and some eth_getTransactionCount requests. But why is there no eth_getTransactionByBlockNumberAndIndex?

Not sure what I'm doing wrong.

import {performance} from 'perf_hooks';
import getProvider from "../helpers/getProvider";
import { EthereumProvider } from "../../src/provider";

async function main() {
  const URL = 'https://localhost:xxxx'; // my RPC endpoint
  console.log(performance.now());
  const blockNumber = 15501711;
  const provider: EthereumProvider = await getProvider({
    fork: {
      url: URL,
      blockNumber,
    }
  });
  const result = await provider.send(
    "eth_getTransactionByBlockNumberAndIndex",
    [`0x${(15501710).toString(16)}`, `0x${(345).toString(16)}`]);
  console.log(performance.now());
  console.log(result);
}

main().then(
  () => { console.log('done'); },
  (err) => { console.log(err); },
);

[megtog]

It seems that ganache uses eth_getBlockByNumber(15501710, true) to get all 348 txs.

Does ganache have local cache to store these data? It seems the eth_getBlockByNumber request would be sent again.

[davidmurdoch]

It caches the data. See src/chains/ethereum/ethereum/src/forking/persistent-cache/persistent-cache.ts (a disk backed cache) and the requestCache (an in-memory cache) in src/chains/ethereum/ethereum/src/forking/handlers/base-handler.ts.

To disable the caches set the fork.disableCache option to true (getProvider({fork:{disableCache: true}})).