public async Task <TransactionExtention> CreateTransactionAsync(string from, string to, long amount)
{
var wallet = _walletClient.GetProtocol();
var fromAddress = _walletClient.ParseAddress(from);
var toAddress = _walletClient.ParseAddress(to);
var transferContract = new TransferContract
{
OwnerAddress = fromAddress,
ToAddress = toAddress,
Amount = amount
};
var transaction = new Transaction();
var contract = new Transaction.Types.Contract();
try
{
contract.Parameter = Google.Protobuf.WellKnownTypes.Any.Pack(transferContract);
}
catch (Exception)
{
return(new TransactionExtention
{
Result = new Return {
Result = false, Code = Return.Types.response_code.OtherError
},
});
}
var newestBlock = await wallet.GetNowBlock2Async(new EmptyMessage(), headers : _options.Value.GetgRPCHeaders());
contract.Type = Transaction.Types.Contract.Types.ContractType.TransferContract;
transaction.RawData = new Transaction.Types.raw();
transaction.RawData.Contract.Add(contract);
transaction.RawData.Timestamp = DateTime.Now.Ticks;
transaction.RawData.Expiration = newestBlock.BlockHeader.RawData.Timestamp + 10 * 60 * 60 * 1000;
var blockHeight = newestBlock.BlockHeader.RawData.Number;
var blockHash = Sha256Sm3Hash.Of(newestBlock.BlockHeader.RawData.ToByteArray()).GetBytes();
var bb = ByteBuffer.Allocate(8);
bb.PutLong(blockHeight);
var refBlockNum = bb.ToArray();
transaction.RawData.RefBlockHash = ByteString.CopyFrom(blockHash.SubArray(8, 8));
transaction.RawData.RefBlockBytes = ByteString.CopyFrom(refBlockNum.SubArray(6, 2));
var transactionExtension = new TransactionExtention
{
Transaction = transaction,
Txid = ByteString.CopyFromUtf8(transaction.GetTxid()),
Result = new Return {
Result = true, Code = Return.Types.response_code.Success
},
};
return(transactionExtension);
}
public async Task <string> TransferAsync(string contractAddress, ITronAccount ownerAccount, string toAddress, decimal amount, string memo, long feeLimit)
{
var contractAddressBytes = Base58Encoder.DecodeFromBase58Check(contractAddress);
var callerAddressBytes = Base58Encoder.DecodeFromBase58Check(toAddress);
var ownerAddressBytes = Base58Encoder.DecodeFromBase58Check(ownerAccount.Address);
var wallet = _walletClient.GetProtocol();
var functionABI = ABITypedRegistry.GetFunctionABI <TransferFunction>();
try
{
var contract = await wallet.GetContractAsync(new BytesMessage
{
Value = ByteString.CopyFrom(contractAddressBytes),
}, headers : _walletClient.GetHeaders());
var toAddressBytes = new byte[20];
Array.Copy(callerAddressBytes, 1, toAddressBytes, 0, toAddressBytes.Length);
var toAddressHex = "0x" + toAddressBytes.ToHex();
var decimals = GetDecimals(wallet, contractAddressBytes);
var tokenAmount = amount;
if (decimals > 0)
{
tokenAmount = amount * Convert.ToDecimal(Math.Pow(10, decimals));
}
var trc20Transfer = new TransferFunction
{
To = toAddressHex,
TokenAmount = Convert.ToInt64(tokenAmount),
};
var encodedHex = new FunctionCallEncoder().EncodeRequest(trc20Transfer, functionABI.Sha3Signature);
var trigger = new TriggerSmartContract
{
ContractAddress = ByteString.CopyFrom(contractAddressBytes),
OwnerAddress = ByteString.CopyFrom(ownerAddressBytes),
Data = ByteString.CopyFrom(encodedHex.HexToByteArray()),
};
var transactionExtention = await wallet.TriggerConstantContractAsync(trigger, headers : _walletClient.GetHeaders());
if (!transactionExtention.Result.Result)
{
_logger.LogWarning($"[transfer]transfer failed, message={transactionExtention.Result.Message.ToStringUtf8()}.");
return(null);
}
var transaction = transactionExtention.Transaction;
if (transaction.Ret.Count > 0 && transaction.Ret[0].Ret == Transaction.Types.Result.Types.code.Failed)
{
return(null);
}
transaction.RawData.Data = ByteString.CopyFromUtf8(memo);
transaction.RawData.FeeLimit = feeLimit;
var transSign = _transactionClient.GetTransactionSign(transaction, ownerAccount.PrivateKey);
var result = await _transactionClient.BroadcastTransactionAsync(transSign);
return(transSign.GetTxid());
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
return(null);
}
}