protected virtual BitcoinShare ProcessShareInternal(StratumClient <BitcoinWorkerContext> worker, string extraNonce2, uint nTime, uint nonce)
{
var extraNonce1 = worker.Context.ExtraNonce1;
// build coinbase
var coinbase = SerializeCoinbase(extraNonce1, extraNonce2);
var coinbaseHash = coinbaseHasher.Digest(coinbase);
// hash block-header
var headerBytes = SerializeHeader(coinbaseHash, nTime, nonce);
var headerHash = headerHasher.Digest(headerBytes, (ulong)nTime);
var headerValue = BigInteger.Parse("00" + headerHash.ReverseArray().ToHexString(), NumberStyles.HexNumber);
// calc share-diff
var shareDiff = (double)new BigRational(BitcoinConstants.Diff1, headerValue) * shareMultiplier;
var stratumDifficulty = worker.Context.Difficulty;
var ratio = shareDiff / stratumDifficulty;
// check if the share meets the much harder block difficulty (block candidate)
var isBlockCandidate = headerValue < blockTargetValue;
// test if share meets at least workers current difficulty
if (!isBlockCandidate && ratio < 0.99)
{
// check if share matched the previous difficulty from before a vardiff retarget
if (worker.Context.VarDiff?.LastUpdate != null && worker.Context.PreviousDifficulty.HasValue)
{
ratio = shareDiff / worker.Context.PreviousDifficulty.Value;
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// use previous difficulty
stratumDifficulty = worker.Context.PreviousDifficulty.Value;
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
var result = new BitcoinShare
{
BlockHeight = BlockTemplate.Height,
IsBlockCandidate = isBlockCandidate
};
var blockBytes = SerializeBlock(headerBytes, coinbase);
result.BlockHex = blockBytes.ToHexString();
result.BlockHash = blockHasher.Digest(headerBytes, nTime).ToHexString();
result.BlockHeight = BlockTemplate.Height;
result.BlockReward = rewardToPool.ToDecimal(MoneyUnit.BTC);
result.Difficulty = stratumDifficulty;
return(result);
}
protected virtual BitcoinShare ProcessShareInternal(string extraNonce1, string extraNonce2, uint nTime, uint nonce, double stratumDifficulty)
{
// build coinbase
var coinbase = SerializeCoinbase(extraNonce1, extraNonce2);
var coinbaseHash = coinbaseHasher.Digest(coinbase);
// build merkle-root
var merkleRoot = mt.WithFirst(coinbaseHash)
.ToArray();
// build block-header
var blockHeader = new BlockHeader
{
Version = (int)BlockTemplate.Version,
Bits = new Target(Encoders.Hex.DecodeData(BlockTemplate.Bits)),
HashPrevBlock = uint256.Parse(BlockTemplate.PreviousBlockhash),
HashMerkleRoot = new uint256(merkleRoot),
BlockTime = DateTimeOffset.FromUnixTimeSeconds(nTime),
Nonce = nonce
};
// hash block-header
var headerBytes = blockHeader.ToBytes();
var headerHash = headerHasher.Digest(headerBytes, (ulong)nTime);
var headerValue = new BigInteger(headerHash);
// calc share-diff
var shareDiff = (double)new BigRational(BitcoinConstants.Diff1, headerValue) * shareMultiplier;
var ratio = shareDiff / stratumDifficulty;
// test if share meets at least workers current difficulty
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// valid share, check if the share also meets the much harder block difficulty (block candidate)
var isBlockCandidate = headerValue < blockTargetValue;
var result = new BitcoinShare
{
BlockHeight = BlockTemplate.Height,
IsBlockCandidate = isBlockCandidate
};
var blockBytes = SerializeBlock(headerBytes, coinbase);
result.BlockHex = blockBytes.ToHexString();
result.BlockHash = blockHasher.Digest(headerBytes, nTime).ToHexString();
result.BlockHeight = BlockTemplate.Height;
result.BlockReward = rewardToPool.ToDecimal(MoneyUnit.BTC);
return(result);
}
private async Task <(bool Accepted, string CoinbaseTransaction)> SubmitBlockAsync(BitcoinShare share)
{
// execute command batch
var results = await daemon.ExecuteBatchAnyAsync(
hasSubmitBlockMethod
?new DaemonCmd(BitcoinCommands.SubmitBlock, new[] { share.BlockHex })
: new DaemonCmd(BitcoinCommands.GetBlockTemplate, new { mode = "submit", data = share.BlockHex }),
new DaemonCmd(BitcoinCommands.GetBlock, new[] { share.BlockHash }));
// did submission succeed?
var submitResult = results[0];
var submitError = submitResult.Error?.Message ?? submitResult.Response?.ToString();
if (!string.IsNullOrEmpty(submitError))
{
logger.Warn(() => $"[{LogCat}] Block {share.BlockHeight} submission failed with: {submitError}");
return(false, null);
}
// was it accepted?
var acceptResult = results[1];
var block = acceptResult.Response?.ToObject <Blocks>();
var accepted = acceptResult.Error == null && block?.Hash == share.BlockHash;
return(accepted, block?.Transactions.FirstOrDefault());
}
protected virtual async Task <(bool Accepted, string CoinbaseTransaction)> SubmitBlockAsync(BitcoinShare share)
{
// execute command batch
var results = await daemon.ExecuteBatchAnyAsync(
hasSubmitBlockMethod
?new DaemonCmd(BitcoinCommands.SubmitBlock, new[] { share.BlockHex })
: new DaemonCmd(BitcoinCommands.GetBlockTemplate, new { mode = "submit", data = share.BlockHex }),
new DaemonCmd(BitcoinCommands.GetBlock, new[] { share.BlockHash }));
// did submission succeed?
var submitResult = results[0];
var submitError = submitResult.Error?.Message ?? submitResult.Response?.ToString();
if (!string.IsNullOrEmpty(submitError))
{
logger.Warn(() => $"[{LogCat}] Block {share.BlockHeight} submission failed with: {submitError}");
notificationService.NotifyAdmin("Block submission failed", $"Block {share.BlockHeight} submission failed with: {submitError}");
return(false, null);
}
// was it accepted?
var acceptResult = results[1];
var block = acceptResult.Response?.ToObject <DaemonResponses.Block>();
var accepted = acceptResult.Error == null && block?.Hash == share.BlockHash;
if (!accepted)
{
logger.Warn(() => $"[{LogCat}] Block {share.BlockHeight} submission failed for pool {poolConfig.Id} because block was not found after submission");
notificationService.NotifyAdmin("Block submission failed", $"Block {share.BlockHeight} submission failed for pool {poolConfig.Id} because block was not found after submission");
}
return(accepted, block?.Transactions.FirstOrDefault());
}
