gasLimit parameter for eth_call

[AntonieDavid]

Currently trnsitioning the linea mainnet nodes using geth binary to besu binary and discovered an issue regarding the accepted parameters for the eth_call method (reference here: https://besu.hyperledger.org/public-networks/reference/api/objects#transaction-call-object:~:text=Parameter%20for%20eth_call%2C%20eth_createAccessList%2C%20and%20eth_estimateGas.) It looks like gasLimit is not accepted in the besu binary.

The issue seems to be that the besu binary doesn't support the same parameters for eth_call as the geth binary, as proven with the following request which works on the node running geth and fails on the one with besu. Below I've attached the request and the expected answer (from the geth node), and the error from the linea node running besu.
curl https://linea-mainnet.public.blastapi.io -H "Content-Type: application/json" -d '{ "jsonrpc": "2.0", "method": "eth_call", "params": [{ "data": "0x535b355c000000000000000000000000cebb9d8349a793439a5f9002934688698783eb740000000000000000000000000000000000000000000000000000f65ad6215c00", "from": "0xaf8ae6955d07776ab690e565ba6fbc79b8de3a5d", "to": "0xcf68a2721394dcf5dcf66f6265c1819720f24528", "gas": "0x15522", "gasLimit": "0x15522", "value": "0x0" }, "latest"], "id": 1 }'
Output from the geth node:
{"jsonrpc":"2.0","id":1,"result":"0x"}
Output from the besu node:
{"jsonrpc":"2.0","id":1,"error":{"code":-32602,"message":"Invalid params"}}
It seems that if I remove the gasLimit parameter when sending the request to the linea node with besu binary it works and provides the expected output. Any suggestions? Thanks

[usmansaleem]

@AntonieDavid This issue in Besu will be fixed through PR hyperledger#7323. However, during my research, I found out that gasLimit in transaction param is ignored in Geth, the gas is used instead as gas limit (both in Geth and Besu). In Besu it was failing due to JSON serialization of unknown fields involving hex literal values. Just wanted to let you know if you mistakenly relying on gasLimit in eth_call.

[usmansaleem]

The PR fixing this issue has been merged.