Is it possible to provide a way to set CallOverrides globally.

[ntduan]

Now the callOverrides can only be passed in via transactions. Just like this:

contract.call(...., {
    gasLimit: ....
    gasPrice: ...
})

But in web3.js it is possible to specify gasLimit when creating a contract .
https://web3js.readthedocs.io/en/v1.2.11/web3-eth-contract.html#new-contract

new web3.eth.Contract(jsonInterface[, address][, options])

I think this is very useful. For example, when using hardhat, I can specify the default gasLimit and gasPrice through the config file (this feature is not available now).

[ricmoo]

For gasLimit, if you wish to specify a default gas limit, you can include it in the ABI:

const abi = [
    // Human-Readable
    "function transfer(address, uint) @123456",
    // JSON
    { name: "transfer", inputs: [ ... ], ..., gas: 123456 }
];

In either of these cases, the gas specified (123,456 gas) will be added to the intrinsic gas cost of the transaction (which accounts for the base fee, calldata zero/non-zero bytes, account creation, etc).

To override gasPrice, you can override the getFeeData() on the Signer object.

But keep in mind you should not be using gasPrice anymore, as using a gasPrice will cost about twice what you need to spend with EIP-1559. By overriding the getFeeData method, you can also adjust what is used by EIP-1559 by overwriting maxBaseFee and/or maxPriorityFeePerGas.

You should almost never be overriding fee data, as the network provides stable and reliable values for this now. But if you have a rare case that requires it, sub-classing Signer is the way to go, is quite simple and allows for a lot of flexibility.

Does that make sense?

(moving to discussion)

[ntduan]

Thank you for your patience in replying. For some reason, I have to specify the default gasLimit for each transaction. I will try to include it in the abi.