protected virtual (Share Share, string BlockHex) ProcessShareInternal(
StratumClient worker, string extraNonce2, uint nTime, uint nonce, uint?versionBits)
{
var context = worker.ContextAs <BitcoinWorkerContext>();
var extraNonce1 = context.ExtraNonce1;
// build coinbase
var coinbase = SerializeCoinbase(extraNonce1, extraNonce2);
Span <byte> coinbaseHash = stackalloc byte[32];
coinbaseHasher.Digest(coinbase, coinbaseHash);
// hash block-header
var headerBytes = SerializeHeader(coinbaseHash, nTime, nonce, context.VersionRollingMask, versionBits);
Span <byte> headerHash = stackalloc byte[32];
headerHasher.Digest(headerBytes, headerHash, (ulong)nTime, BlockTemplate, coin, networkParams);
var headerValue = new uint256(headerHash);
// calc share-diff
var shareDiff = (double)new BigRational(BitcoinConstants.Diff1, headerHash.ToBigInteger()) * shareMultiplier;
var stratumDifficulty = 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 (context.VarDiff?.LastUpdate != null && context.PreviousDifficulty.HasValue)
{
ratio = shareDiff / context.PreviousDifficulty.Value;
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// use previous difficulty
stratumDifficulty = context.PreviousDifficulty.Value;
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
var result = new Share
{
BlockHeight = BlockTemplate.Height,
NetworkDifficulty = Difficulty,
Difficulty = stratumDifficulty / shareMultiplier,
};
if (isBlockCandidate)
{
result.IsBlockCandidate = true;
Span <byte> blockHash = stackalloc byte[32];
blockHasher.Digest(headerBytes, blockHash, nTime);
result.BlockHash = blockHash.ToHexString();
var blockBytes = SerializeBlock(headerBytes, coinbase);
var blockHex = blockBytes.ToHexString();
return(result, blockHex);
}
return(result, null);
}
protected virtual (Share Share, string BlockHex) ProcessShareInternal(StratumClient worker, string extraNonce,
uint nTime, string nonce, string solution)
{
var context = worker.ContextAs <BitcoinWorkerContext>();
var solutionBytes = solution.HexToByteArray();
var extraNonceBytes = extraNonce.HexToByteArray();
var nonceInt = uint.Parse(nonce, NumberStyles.HexNumber);
// hash block-header
var headerBytes = SerializeHeader(nTime, extraNonceBytes, nonceInt);
// hash block-header
var headerSolutionBytes = headerBytes.Concat(solutionBytes).ToArray();
var headerHash = headerHasher.Digest(headerSolutionBytes);
var headerValue = new uint256(headerHash);
// calc share-diff
double shareDiff = (double)new BigRational(chainConfig.Diff1b, headerHash.ToBigInteger());
var stratumDifficulty = context.Difficulty;
var ratio = shareDiff / stratumDifficulty;
// check if the share meets the much harder block difficulty (block candidate)
var isBlockCandidate = headerValue < blockTarget.ToUInt256();
// 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 (context.VarDiff?.LastUpdate != null && context.PreviousDifficulty.HasValue)
{
ratio = shareDiff / context.PreviousDifficulty.Value;
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// use previous difficulty
stratumDifficulty = context.PreviousDifficulty.Value;
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
var result = new Share
{
BlockHeight = BlockHeader.Height,
NetworkDifficulty = Difficulty,
Difficulty = stratumDifficulty,
};
if (isBlockCandidate)
{
result.IsBlockCandidate = true;
result.BlockHash = headerValue.ToString();
var blockHex = headerSolutionBytes.ToHexString();
return(result, blockHex);
}
return(result, null);
}
private (Share Share, string BlockHex) ProcessShareInternal(StratumClient worker, string nonce,
uint nTime, string solution)
{
var context = worker.ContextAs <BitcoinWorkerContext>();
var solutionBytes = (Span <byte>)solution.HexToByteArray();
// serialize block-header
var headerBytes = SerializeHeader(nTime, nonce);
// verify solution
if (!solver.Verify(headerBytes, solutionBytes.Slice(networkParams.SolutionPreambleSize)))
{
throw new StratumException(StratumError.Other, "invalid solution");
}
// concat header and solution
Span <byte> headerSolutionBytes = stackalloc byte[headerBytes.Length + solutionBytes.Length];
headerBytes.CopyTo(headerSolutionBytes);
solutionBytes.CopyTo(headerSolutionBytes.Slice(headerBytes.Length));
// hash block-header
Span <byte> headerHash = stackalloc byte[32];
headerHasher.Digest(headerSolutionBytes, headerHash, (ulong)nTime);
var headerValue = new uint256(headerHash);
// calc share-diff
var shareDiff = (double)new BigRational(networkParams.Diff1BValue, headerHash.ToBigInteger());
var stratumDifficulty = 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 (context.VarDiff?.LastUpdate != null && context.PreviousDifficulty.HasValue)
{
ratio = shareDiff / context.PreviousDifficulty.Value;
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// use previous difficulty
stratumDifficulty = context.PreviousDifficulty.Value;
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
var result = new Share
{
BlockHeight = BlockTemplate.Height,
NetworkDifficulty = Difficulty,
Difficulty = stratumDifficulty,
};
if (isBlockCandidate)
{
var headerHashReversed = headerHash.ToNewReverseArray();
result.IsBlockCandidate = true;
result.BlockReward = rewardToPool.ToDecimal(MoneyUnit.BTC);
result.BlockHash = headerHashReversed.ToHexString();
var blockBytes = SerializeBlock(headerBytes, coinbaseInitial, solutionBytes);
var blockHex = blockBytes.ToHexString();
return(result, blockHex);
}
return(result, null);
}
protected virtual BitcoinShare ProcessShareInternal(StratumClient worker, string extraNonce2, uint nTime, uint nonce)
{
var context = worker.GetContextAs <BitcoinWorkerContext>();
var extraNonce1 = 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 = new uint256(headerHash);
// calc share-diff
var shareDiff = (double)new BigRational(BitcoinConstants.Diff1, headerHash.ToBigInteger()) * shareMultiplier;
var stratumDifficulty = 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 (context.VarDiff?.LastUpdate != null && context.PreviousDifficulty.HasValue)
{
ratio = shareDiff / context.PreviousDifficulty.Value;
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// use previous difficulty
stratumDifficulty = context.PreviousDifficulty.Value;
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
var result = new BitcoinShare
{
BlockHeight = BlockTemplate.Height,
BlockReward = rewardToPool.ToDecimal(MoneyUnit.BTC),
NetworkDifficulty = Difficulty * shareMultiplier,
Difficulty = stratumDifficulty,
};
var blockBytes = SerializeBlock(headerBytes, coinbase);
if (isBlockCandidate)
{
result.IsBlockCandidate = true;
result.BlockHex = blockBytes.ToHexString();
result.BlockHash = blockHasher.Digest(headerBytes, nTime).ToHexString();
}
return(result);
}
private (Share Share, string nonce, string solution, string headerHash, string nTime) ProcessShareInternal(
StratumClient worker, string nonce, string nTime, string solution)
{
var context = worker.ContextAs <AionWorkerContext>();
var solutionBytes = solution.HexToByteArray();
// serialize block-header
var headerBytes = SerializeHeader(nonce);
// verify solution
if (!equihash.Verify(headerBytes, solutionBytes))
{
throw new StratumException(StratumError.Other, "invalid solution");
}
// hash block-header
var headerSolutionBytes = headerBytes.Concat(solutionBytes).ToArray();
Span <byte> headerHash = stackalloc byte[32];
headerHasher.Digest(headerSolutionBytes, headerHash);
var headerHashReversed = headerHash.ToNewReverseArray();
var headerValue = headerHashReversed.ToBigInteger();
var target = new BigInteger(blockTarget.ToBytes());
var isBlockCandidate = target > headerValue;
logger.Debug(() => $"context.Difficulty:{context.Difficulty} Difficulty: {Difficulty}");
// calc share-diff
var stratumDifficulty = context.Difficulty > Difficulty ? Difficulty : context.Difficulty;
var shareDiff = stratumDifficulty;
var ratio = shareDiff / stratumDifficulty;
var sentTargetInt = new uint256(AionUtils.diffToTarget(context.Difficulty).HexToReverseByteArray());
var sentTarget = new BigInteger(sentTargetInt.ToBytes());
var isLowDiffShare = sentTarget <= headerValue;
if (isLowDiffShare)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
var result = new Share
{
BlockHeight = (long)BlockTemplate.Height,
IpAddress = worker.RemoteEndpoint?.Address?.ToString(),
Miner = context.MinerName,
Worker = context.WorkerName,
UserAgent = context.UserAgent,
NetworkDifficulty = Difficulty,
Difficulty = stratumDifficulty,
IsBlockCandidate = isBlockCandidate,
TransactionConfirmationData = headerHash.ToHexString(),
};
if (isBlockCandidate)
{
// result.BlockReward = AionUtils.calculateReward((long) BlockTemplate.Height);
result.BlockHash = headerHashReversed.ToHexString();
}
return(result, nonce, solution, BlockTemplate.HeaderHash, nTime);
}
private async Task <(Share Share, string nonce, string solution, string headerHash, string nTime)> ProcessShareInternal(
StratumClient worker, string nonce, string nTime, string solution)
{
var context = worker.GetContextAs <AionWorkerContext>();
var solutionBytes = solution.HexToByteArray();
// serialize block-header
var headerBytes = SerializeHeader(nonce);
// verify solution
if (!equihash.Verify210(headerBytes, solutionBytes))
{
throw new StratumException(StratumError.Other, "invalid solution");
}
// hash block-header
var headerSolutionBytes = headerBytes.Concat(solutionBytes).ToArray();
var headerHash = headerHasher.Digest(headerSolutionBytes);
var headerHashReversed = headerHash.ToReverseArray();
var headerBigInt = headerHashReversed.ToBigInteger();
var target = new BigInteger(blockTarget.ToBytes());
var isBlockCandidate = target > headerBigInt;
// calc share-diff
var stratumDifficulty = context.Difficulty > Difficulty ? Difficulty : context.Difficulty;
var shareDiff = stratumDifficulty;
var ratio = shareDiff / stratumDifficulty;
var sentTargetInt = new uint256(AionUtils.diffToTarget(context.Difficulty).HexToByteArray().ReverseArray());
var sentTarget = new BigInteger(sentTargetInt.ToBytes());
var isLowDiffShare = sentTarget <= headerBigInt;
if (isLowDiffShare)
{
// Check if matched a previous varDiff before retarget
if (context.VarDiff?.LastUpdate != null && context.PreviousDifficulty.HasValue)
{
var prevSentTargetInt = new uint256(AionUtils.diffToTarget(context.PreviousDifficulty.Value).HexToByteArray().ReverseArray());
var prevSentTargetBi = new BigInteger(prevSentTargetInt.ToBytes());
if (prevSentTargetBi <= headerBigInt)
{
stratumDifficulty = context.PreviousDifficulty.Value;
}
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
var result = new Share
{
BlockHeight = (long)BlockTemplate.Height,
IpAddress = worker.RemoteEndpoint?.Address?.ToString(),
Miner = context.MinerName,
Worker = context.WorkerName,
UserAgent = context.UserAgent,
NetworkDifficulty = Difficulty,
Difficulty = stratumDifficulty,
IsBlockCandidate = isBlockCandidate,
TransactionConfirmationData = headerHash.ToHexString(),
};
if (isBlockCandidate)
{
result.BlockReward = AionUtils.calculateReward((long)BlockTemplate.Height);
result.BlockHash = headerHashReversed.ToHexString();
}
return(result, nonce, solution, BlockTemplate.HeaderHash, nTime);
}
public void Digest(ReadOnlySpan <byte> data, Span <byte> result, params object[] extra)
{
upstream.Digest(data, result, extra);
result.Reverse();
}