Problem: eth_gasPrice/eth_maxPriorityFeePerGas shouldn't return a price bigger than needed

[yihuang]

Proposal: eth_gasPrice should count in the minimal-gas-prices

Current behavior:

Currently eth_gasPrice returns base_fee + min_gas_price, but in reality, the ante handler check eip-1559 fee and minimal-gas-prices separately, so it should return max(minimal-gas-price, base-fee).
And eth_maxPriorityFeePerGas should return eth_gasPrice - base-fee.

Desired behavior: return max(minimal-gas-price, base-fee)

Use case: To keep the returned gas price reasonable.

[thomas-nguy]

This fix would fix non-EIP 1559 tx when baseFee < minimal-gas-price

But there is another issue with our current design, which is that if baseFee < minimal-gas-price, then EIP1559 tx that don't set the tip parameter will get rejected.

Would it be better to return max(minimal-gas-price, computed-base-fee) for baseFee in block (ie introducing a minimum value) and returning 0 for eth_maxPriorityFeePerGas?

Another suggestion is the one proposed in the telegram channel, ie not check the minimal-gas-price for ethereum transaction

[yihuang]

Would it be better to return max(minimal-gas-price, computed-base-fee) for baseFee in block (ie introducing a minimum value) and returning 0 for eth_maxPriorityFeePerGas?

The problem is minimal-gas-price is configured per-validator, but the basdFee field in the block should be consistent?

[thomas-nguy]

Yes..

So I guess the better option is not check the minimal-gas-price for ethereum transaction but the basefee instead

[yihuang]

fixed by #916