What am I doing wrong that the size of my data account is 0 when passed to program via keys?

[nukec]

I have simple rust program with following code:

let game_account = next_account_info(account_info_iter)?;
let dorito = &game_account.try_data_len()?;

msg!("size of dorito: {:?}", dorito);

The code above gives me the size of dorito - data account (game_account) of 0, while when if I use solana-web3.js I have no issues whatsoever, I get the full size of data account, aka account is passed properly.

But with solnet with following code the size of data account is 0, which means I am probably missing something:

public async Task<PublicKey?> SetNewGameDataAsync(PublicKey playerPublicKey, PublicKey dataAccountPublicKey)
        {
            RequestResult<ResponseValue<BlockHash>>? blockHash = await this._rpcClient.GetRecentBlockHashAsync();

            PublicKey programId = new(this._chainConfiguration.ProgramId);

            List<AccountMeta> keys = new()
                                     {
                                         AccountMeta.Writable(publicKey: dataAccountPublicKey, isSigner: false),
                                         AccountMeta.ReadOnly(publicKey: playerPublicKey, isSigner: false),
                                         AccountMeta.ReadOnly(new PublicKey(this._chainConfiguration.ServerAddressPublicKey), isSigner: false)
                                     };

            byte[]? tx = new TransactionBuilder().SetRecentBlockHash(blockHash.Result.Value.Blockhash)
                                                 .SetFeePayer(this._account)
                                                 .AddInstruction(new TransactionInstruction { ProgramId = programId, Keys = keys, Data = GameCommands.CreateGame() })
                                                 .Build(this._account);

            RequestResult<ResponseValue<SimulationLogs>>? simulatedTransaction = await this._rpcClient.SimulateTransactionAsync(tx);

            if (!simulatedTransaction.WasSuccessful)
            {
                this._logger.LogError("Solana cluster " + this._chainConfiguration.Cluster + ": Could not simulate transaction for creating new game - Server code " +
                                      simulatedTransaction.ServerErrorCode);

                return null;
            }

            await this._rpcClient.SendTransactionAsync(tx);

            return dataAccountPublicKey;
        }

[hoakbuilds]

Difficult to know for sure without more context into the rust code.
You are not passing any data in the instruction, is this intended?

I am not really seeing anything in the code that is standing out as being wrong.

[nukec]

if you deploy very simple program like mine and you try to pass data account via keys via solnet code, does it work for you? that's quite crucial functionality which is not covered in examples and tests i think. so creating data account works without issues with solnet, but when i am trying to pass created data account to program via Keys then size is 0. would it be possible for you to try this with very simple program like this(rust program):

pub fn process_instruction(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    instruction_data: &[u8],
) -> ProgramResult {
    msg!("Helloworld Rust program entrypoint");

    
    let account_info_iter = &mut accounts.iter();

        let data_account = next_account_info(account_info_iter)?;

        msg!("data account key: {:?}", data_account.key);

        let sizeOfDataAccount = &data_account.try_data_len()?;

        msg!("size of data account: {:?}", sizeOfDataAccount);
Ok(());

[hoakbuilds]

I see another big difference in the code snippets. In web3.js you are sending the transaction and waiting for confirmation while in the Solnet code you are only simulating the transaction, have you tried submitting the transaction normally and seeing if this behavior persists?

I am going to attempt replicating this.

[hoakbuilds]

Using the same program you deployed and account keys you have shown here for the example I am not being able to replicate this issue.

https://solscan.io/tx/5JzSHpKnXDcZHbvZ5Gt6okJcUhNZuYMPtrBtjFB3NfPFiBUqjLbd2MdzuAmJJmhB88xmws7bkeuBAGyU6ZjptyLw?cluster=devnet

[hoakbuilds]

Are you creating an account and attempting to execute this instruction sequentially? It could be that you are trying to do this in a really short timespan and the transaction which creates the account which you want to get the account data of hasn't been finalized.

[hoakbuilds]

This last comment may be incorrect, I have managed to create an account and executing the instruction in the same transaction, as you can see here.

https://solscan.io/tx/cBVz4JqHqKmYCsV6EpbwWA7wEY6Shunb2AK7uhkyJpMaQTCvVqA9rzVqV36oA4nAWT3hVumzwwCzAg44oRzSBYV

The code I have used to attempt replicate this:
https://gist.github.com/murlokito/319bd6e941f418d188f8f66fbbe10012