/// <summary>
/// Creates a new instance of generation transaction.
/// </summary>
/// <param name="extraNonce">The extra nonce.</param>
/// <param name="daemonClient">The daemon client.</param>
/// <param name="blockTemplate">The block template.</param>
/// <param name="poolConfig">The associated pool's configuration</param>
/// <remarks>
/// Reference implementations:
/// https://github.com/zone117x/node-stratum-pool/blob/b24151729d77e0439e092fe3a1cdbba71ca5d12e/lib/transactions.js
/// https://github.com/Crypto-Expert/stratum-mining/blob/master/lib/coinbasetx.py
/// </remarks>
public GenerationTransaction(IExtraNonce extraNonce, IDaemonClient daemonClient,
IBlockTemplate blockTemplate, IPoolConfig poolConfig)
{
// TODO: we need a whole refactoring here.
// we should use DI and it shouldn't really require daemonClient connection to function.
BlockTemplate = blockTemplate;
ExtraNonce = extraNonce;
PoolConfig = poolConfig;
Version = blockTemplate.Version;
TxMessage = Serializers.SerializeString(poolConfig.Meta.TxMessage);
LockTime = 0;
// transaction inputs
Inputs = new List <TxIn>
{
new TxIn
{
PreviousOutput = new OutPoint
{
Hash = Hash.ZeroHash,
Index = (UInt32)Math.Pow(2, 32) - 1
},
Sequence = 0x0,
SignatureScript =
new SignatureScript(
blockTemplate.Height,
blockTemplate.CoinBaseAux.Flags,
TimeHelpers.NowInUnixTimestamp(),
(byte)extraNonce.ExtraNoncePlaceholder.Length,
"/CoiniumServ/")
}
};
// transaction outputs
Outputs = new Outputs(daemonClient, poolConfig.Coin);
double blockReward = BlockTemplate.Coinbasevalue; // the amount rewarded by the block.
// generate output transactions for recipients (set in config).
foreach (var pair in poolConfig.Rewards)
{
var amount = blockReward * pair.Value / 100; // calculate the amount the recieves based on the percent of his shares.
blockReward -= amount;
Outputs.AddRecipient(pair.Key, amount);
}
// send the remaining coins to pool's central wallet.
Outputs.AddPoolWallet(poolConfig.Wallet.Adress, blockReward);
// Final output is witness
//https://github.com/slush0/stratum-mining/pull/16/files?diff=unified
if (!string.IsNullOrEmpty(BlockTemplate.Default_witness_commitment))
{
Outputs.AddWitnessOutput(BlockTemplate.Default_witness_commitment.HexToByteArray());
}
}