I’m running a simple script every 30 seconds using Infura API to make one call to a smart contract function. However, eth_blockNumber is being called like 16x as compared to eth_call
Simplified code as below:
#index.js
var Web3 = require('web3');
const HDWalletProvider = require('@truffle/hdwallet-provider');
let timeout = 30000;
const start = async () => {
console.log('Starting')
var hd = new HDWalletProvider(RINKEBY_WALLET_MNEMONIC, "https://rinkeby.infura.io/v3/" + INFURA_PROJECT_ID)
var web3 = new Web3(hd)
const contract = await new web3.eth.Contract(abi, address)
const accounts = await web3.eth.getAccounts()
let result = await contract.methods.getValue().call({from:accounts[0]})
console.log(result)
// this successfully fetches the value from the smart contract
for (i = 1; i <= 2; i++) {
// make a send call to contract
let result = await contract.methods.setValue('10').send({from: accounts[0]})
console.log('fetched result with txnObject: ' + result)
}
restart()
}
const restart = () => {
console.log('restart: waiting for ' + timeout/1000 + ' seconds')
wait(timeout).then(start);
};
const wait = (milliseconds) => {
return new Promise((resolve, reject) => setTimeout(() => resolve(), milliseconds));
};
start()
In above function, eth_call gets called only once, and eth_sendRawTransaction is called twice but eth_blocknumber gets call multiple times (like 20 or so).
eth_getBlockByNumber and eth_getTransactionReceipt also gets called multiple times (like 5 times or so compared to eth_call)
Due to unnecessary high number of eth_blocknumber, I’ve to pay a lot more for the Infura API access.
On the other hand, perhaps my understanding of Infura working is incorrect. How many API calls are made when making a simple call request to a function? And how many for making a send request? And how to change code so as to limit eth_blocknumber and other such high number of requests (which are not made explicitly but still gets counted in API count)
Any idea how to solve this?