Bad RLP Payload with Very High Gas Limit

[benorgera]

Version

├── ethers v0.17.0
│   ├── ethers-addressbook v0.17.0
│   │   ├── ethers-core v0.17.0
│   ├── ethers-contract v0.17.0
│   │   ├── ethers-contract-abigen v0.17.0
│   │   │   ├── ethers-core v0.17.0 (*)
│   │   ├── ethers-contract-derive v0.17.0 (proc-macro)
│   │   │   ├── ethers-contract-abigen v0.17.0
│   │   │   │   ├── ethers-core v0.17.0
│   │   │   ├── ethers-core v0.17.0 (*)
│   │   ├── ethers-core v0.17.0 (*)
│   │   ├── ethers-providers v0.17.0
│   │   │   ├── ethers-core v0.17.0 (*)
│   ├── ethers-core v0.17.0 (*)
│   ├── ethers-etherscan v0.17.0
│   │   ├── ethers-core v0.17.0 (*)
│   ├── ethers-middleware v0.17.0
│   │   ├── ethers-contract v0.17.0 (*)
│   │   ├── ethers-core v0.17.0 (*)
│   │   ├── ethers-etherscan v0.17.0 (*)
│   │   ├── ethers-providers v0.17.0 (*)
│   │   ├── ethers-signers v0.17.0
│   │   │   ├── ethers-core v0.17.0 (*)
│   ├── ethers-providers v0.17.0 (*)
│   └── ethers-signers v0.17.0 (*)
├── ethers-flashbots v0.10.0
│   ├── ethers v0.17.0 (*)

Platform Linux 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Description When signing an EIP1559 TypedTransaction via tx.rlp_signed(...) and submitting it to mainnet using send_raw_transaction(...), my RPC replies with JsonRpcClientError(JsonRpcError(JsonRpcError { code: -32600, message: \"reading transaction object failed.

Upon closer inspection, the rawTx payload is not well-formed RLP.

I used this code to generate, sign, and send the transaction:

let calldata = ABIGENED_CONTRACT.METHOD_NAME().calldata();

let tx: TypedTransaction = TypedTransaction::Eip1559(Eip1559TransactionRequest {
        from: Some(self.our_addr),
        to: Some(NameOrAddress::Address(self.contract_addr)),
        value: Some(price),
        data: calldata,
        nonce: Some(self.our_addr_next_nonce),
        chain_id: Some(U64::from(u64::from(Chain::Mainnet))),
        access_list: AccessList::default(),
        gas: Some(U256::MAX),
        max_priority_fee_per_gas: Some(max_priority),
        max_fee_per_gas: Some(max_gas),
});

let wallet : Wallet<_> = PRIVATE_KEY.parse();

let signature = wallet.sign_transaction_sync(tx);

let provider = Provider::<Http>::try_from(RPC_URL).unwrap();

let rawTx : Bytes = tx.rlp_signed(&signature);

provider.send_raw_transaction(rawTx).await;

A sample rawTx I got from this code is 0x02f8ec010c8080a0ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff9423706b3d3a6667fafa53fcbf54f4933e5f912471872276193e524000b8645bebdaf60000000000000000000000000000000000000000000000000000000000000045000000000000000000000000000000000000000000000000002276193e5240000000000000000000000000000000000000000000000000000000000000000000c001a03cd81a267232917ebe4b9320ee12160157106da4630e71ed47b61617deadeb99a0388707564882939ad16d0a0675ffcab0a1a214d533f0880d9c285f9554a94dd1.

Plugging this rawTx into a few RLP decoders (ie. https://gist.github.com/miguelmota/9099b705cf433336036065ab748c8404) I see that this is a bad payload and failing assertions that a remainder must be zero.

I'm not an RLP expert but I believe I should be getting well formed RLP for my rawTx regardless of the fields I set in my Eip1559TransactionRequest. But maybe this has something to do with the specific data in my tx (ie. gas limit int max). Here is a sample tx which I got from the above code which produces a bad payload (addresses changed for anonymity):

Eip1559(
    Eip1559TransactionRequest {
        from: Some(
            0xa281aa6e20b174764549592bd6a305f38d949db5,
        ),
        to: Some(
            Address(
                0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48,
            ),
        ),
        gas: Some(
            115792089237316195423570985008687907853269984665640564039457584007913129639935,
        ),
        value: Some(
            9600000000000002,
        ),
        data: Some(
            Bytes(
                b"[\xeb\xda\xf6\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0E\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\"\x1b&-\xd8\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0",
            ),
        ),
        nonce: Some(
            12,
        ),
        access_list: AccessList(
            [],
        ),
        max_priority_fee_per_gas: Some(
            1000000000,
        ),
        max_fee_per_gas: Some(
            29031605598,
        ),
        chain_id: Some(
            1,
        ),
    },
)