Failed transaction

[MoonNone]

When trying to make a swap, I have this error :
"failed to deserialize solana_sdk::transaction::versioned::VersionedTransaction: invalid value: continue signal on byte-three, expected a terminal signal on or before byte-three".
Failure happens with SendTransactionAsync (txResult.Result is null)
`
SwapQuoteAg swapQuote = await m_dexJupiter.GetSwapQuote(m_tokenSell.MintAddress, m_tokenBuy.MintAddress, DecimalUtil.ToUlong(m_amount, m_tokenSell.Decimals), SwapMode.ExactIn);

Transaction tx = await m_dexJupiter.Swap(swapQuote);

byte[] transactionData = transaction.Serialize();
byte[] txSign = m_wallet.Sign(transactionData);
var txResult = await m_clientRPC.SendTransactionAsync(Convert.ToBase64String(txSign));
`

[GabrielePicco]

@MoonNone are you able to swap using the demo scene?

https://magicblock-labs.github.io/Solana.Unity-SDK/

The swap example uses Jupiter, is included in the demo you can import on SDK installation. Please use it as a reference for implementing the swap functionality.

[GabrielePicco]

here is the example code: https://github.com/magicblock-labs/Solana.Unity-SDK/blob/main/Samples~/Solana%20Wallet/Scripts/example/screens/SwapScreenAggregator.cs#L84

Rather than manually sign, you can use the Web3 class, as described here: https://solana.unity-sdk.gg/docs/jupiter

[MoonNone]

Thanks Gabriele,
I already checked the jupiter example, but problem is it's using walletBase and not Wallet class.
What I don't get is what can be wrong with the few lines of code above.
(I checked the Jupiter link, and it uses WalletBase, not Wallet.)

[GabrielePicco]

Web3.Instance.WalletBase and Web3.Wallet are equivalent, they resolve to the same object. I will modify the example to use the more simple syntax, but there is no difference.

[MoonNone]

Ok, I think it might be a SDK error.

Jupiter swap does not work for some reason :
SwapQuoteAg swapQuote = await m_dexJupiter.GetSwapQuote(m_tokenSell.MintAddress, m_tokenBuy.MintAddress, DecimalUtil.ToUlong(m_amount, m_tokenSell.Decimals), SwapMode.ExactIn); Transaction tx = await m_dexJupiter.Swap(swapQuote); transaction.Sign(m_walletAccount); var result = await m_clientRPC.SendTransactionAsync(Convert.ToBase64String(transaction.Serialize()));

But Orca does :
SwapQuote swapQuote = await m_dexOrca.GetSwapQuote(m_tokenSell.MintAddress, m_tokenBuy.MintAddress, DecimalUtil.ToUlong(m_amount, m_tokenSell.Decimals), 200); var _whirlpool = await m_dexOrca.FindWhirlpoolAddress(m_tokenSell.MintAddress, m_tokenBuy.MintAddress); Transaction tx = await m_dexOrca.SwapWithQuote(_whirlpool.Address, swapQuote); transaction.Sign(m_walletAccount); var result = await m_clientRPC.SendTransactionAsync(Convert.ToBase64String(transaction.Serialize()));

And there's another small glitch : by default for Orca, slippageBPS unit is decimal (0.01), instead of real unit (1).

[GabrielePicco]

Please open an issue with the full example to reproduce the issue. Including token mints, amount, etc ...
Does the swap you are trying work in the demo: https://magicblock-labs.github.io/Solana.Unity-SDK/ ?

[Zeddex]

Hi. I have an error making this swap transaction. "invalid transaction: Transaction failed to sanitize accounts offsets correctly"
`public async Task MakeSwap(string tokenIn, string tokenOut, decimal amount)
{
TokenData tokenA = await Dex.GetTokenBySymbol(tokenIn);
TokenData tokenB = await Dex.GetTokenBySymbol(tokenOut);

SwapQuoteAg swapQuote = await Dex.GetSwapQuote(
    tokenA.MintAddress,
    tokenB.MintAddress,
    DecimalUtil.ToUlong(amount, tokenA.Decimals)
);

var quoteOutput = DecimalUtil.FromBigInteger(swapQuote.OutputAmount, tokenB.Decimals);
await Console.Out.WriteLineAsync($"Output Amount: {quoteOutput} {tokenOut}");

await Console.Out.WriteLineAsync(string.Join(" -> ", swapQuote.RoutePlan.Select(p => p.SwapInfo.Label)));

var swapTransaction = await Dex.Swap(swapQuote);
swapTransaction.Sign(Wallet.Account);

var txSignature = await RpcClient.SendTransactionAsync(swapTransaction.Serialize());
return txSignature.Result;

}`