/// <summary>
/// Creates a 'ClaimTransaction', signs it and send a 'sendrawtransaction' RPC call to the connected node.
/// This method does not put gas into claimable state. Can only claim 'unclaimable' amount.
/// </summary>
/// <returns></returns>
public override async Task <ClaimTransaction> ClaimGas(UInt160 changeAddress = null)
{
var(claimable, amount) =
await TransactionBuilderHelper.GetClaimable(AddressScriptHash.ToAddress(), _restService);
if (amount <= 0)
{
throw new WalletException("No GAS available to claim at this address");
}
var tx = new ClaimTransaction();
var references = new List <CoinReference>();
foreach (var entry in claimable)
{
references.Add(new CoinReference
{
PrevHash = UInt256.Parse(entry.Txid),
PrevIndex = (ushort)entry.N,
});
}
if (changeAddress == null)
{
changeAddress = AddressScriptHash;
}
var outputs = new List <TransactionOutput>
{
new TransactionOutput
{
ScriptHash = changeAddress,
AssetId = Utils.GasToken,
Value = Fixed8.FromDecimal(amount),
}
};
tx.Version = 0;
tx.Claims = references.ToArray();
tx.Inputs = new CoinReference[0];
tx.Outputs = outputs.ToArray();
tx.Attributes = new TransactionAttribute[0];
var result = await SignAndSendTransaction(tx);
return(result ? tx : null);
}
