estimate-gas return wrong value

[speedrunner911]

🐛 Bug

Estimate-gas cannot calculate internal txs cost

To reproduce

1. create smart contract with internal txs
2. check how much gas needed to call function with internal tx inside
3. try to call this function with use gas amount from 2.
4. transaction will fail bc of "out of gas"

Expected Behavior

If you deploy same contract in eth network, estimate gas will return bigger amount, because it can calculate how much gas needed to execute internal txs.

[orogvany]

Thanks. Please attach a sample raw tx to debug this issue.

[speedrunner911]

Contract hex data = 0x608060405234801561001057600080fd5b5060c88061001f6000396000f300608060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680639765b4d7146041575b005b60476049565b005b3373ffffffffffffffffffffffffffffffffffffffff166108fc600234811515606e57fe5b049081150290604051600060405180830381858888f193505050501580156099573d6000803e3d6000fd5b505600a165627a7a723058201c17bc5fbe92ad70e82f652e9d79752087242a4f28f4502e13e4ceab79bf1b660029 Try to run estimate gas with 0x9765b4d7 data and any value. Contract source code

contract simpleInternalTx {

    function autoSend() public payable {
        msg.sender.transfer(msg.value/2);
    }

    function () external payable {}
}

[semuxgo]

Hey @speedrunner911,

I've deployed the above contract to https://semux.info/explorer/account/0xa845e8f4acf31faa7b51ffc3494d3f236862ab4f and tested /estimate-gas API.

Request:

curl -X GET "http://127.0.0.1:5171/v2.5.0/estimate-gas?to=0xa845e8f4acf31faa7b51ffc3494d3f236862ab4f&value=5&data=0x9765b4d7" -H "accept: application/json"

Response body:

{
  "success": true,
  "message": "successful operation",
  "result": "28914"
}

I can see the API returns an estimated gas of 28914.