private bool blockMining(BlockMsg block)
{
var work = new POW(block.Header.Height);
var blockData = new List <byte>();
foreach (var tx in block.Transactions)
{
blockData.AddRange(tx.Serialize());
}
Parallel.For(0L, Int64.MaxValue, new ParallelOptions {
MaxDegreeOfParallelism = 4
}, (i, loopState) =>
//for (long i = 0; i < Int64.MaxValue; i++)
{
//var latestHeight = this.blockComponent.GetLatestHeight();
//if(latestHeight > -1 && latestHeight >= block.Header.Height)
//{
// loopState.Stop();
//}
var newBuffer = new List <byte>(blockData.ToArray());
var nonceBytes = BitConverter.GetBytes(i);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(nonceBytes);
}
newBuffer.AddRange(nonceBytes);
var result = Base16.Encode(
HashHelper.Hash(
newBuffer.ToArray()
));
if (work.Verify(block.Header.Bits, result))
{
block.Header.Timestamp = Time.EpochTime;
block.Header.Nonce = i;
block.Header.Hash = block.Header.GetHash();
//block.Transactions[0].Timestamp = block.Header.Timestamp;
//block.Transactions[0].Hash = block.Transactions[0].GetHash();
loopState.Stop();
//break;
LogHelper.Debug("A New Block " + block.Header.Height + " has been created, the correct nonce is " + i);
}
else
{
}
}
);
if (block.Header.Nonce >= 0)
{
return(true);
}
else
{
return(false);
}
}
public bool VerifyBlock(BlockMsg newBlock)
{
if (this.exists(newBlock.Header.Hash))
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_HAS_BEEN_EXISTED);
}
if (newBlock.Header.Hash != newBlock.Header.GetHash())
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_HASH_ERROR);
}
var blockComponent = new BlockComponent();
var previousBlock = this.GetBlockMsgByHash(newBlock.Header.PreviousBlockHash);
if (newBlock.Header.Height > 0 && previousBlock == null)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.PREV_BLOCK_NOT_EXISTED);
}
if ((newBlock.Header.Timestamp > Time.EpochTime && (newBlock.Header.Timestamp - Time.EpochTime) > 2 * 60 * 60 * 1000) ||
(previousBlock != null && newBlock.Header.Timestamp <= previousBlock.Header.Timestamp))
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_TIME_IS_ERROR);
}
if (newBlock.Serialize().Length > BlockSetting.MAX_BLOCK_SIZE)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_SIZE_LARGE_THAN_LIMIT);
}
var work = new POW(newBlock.Header.Height);
var txComponent = new TransactionComponent();
if (newBlock.Transactions.Count > 0)
{
var coinbase = newBlock.Transactions[0];
var reward = work.GetNewBlockReward();
var totalFee = 0L;
if (newBlock.Transactions.Count > 1)
{
for (int i = 1; i < newBlock.Transactions.Count; i++)
{
long fee;
if (txComponent.VerifyTransaction(newBlock.Transactions[i], out fee))
{
totalFee += fee;
}
else
{
return(false);
}
}
}
if (coinbase.Inputs.Count != 1 || coinbase.Outputs.Count != 1 || coinbase.Inputs[0].OutputTransactionHash != Base16.Encode(HashHelper.EmptyHash()))
{
throw new CommonException(ErrorCode.Engine.Transaction.Verify.COINBASE_FORMAT_ERROR);
}
else
{
var output = coinbase.Outputs[0];
if (output.Amount > BlockSetting.OUTPUT_AMOUNT_MAX)
{
throw new CommonException(ErrorCode.Engine.Transaction.Verify.OUTPUT_EXCEEDED_THE_LIMIT);
}
if (!Script.VerifyLockScriptFormat(output.LockScript))
{
throw new CommonException(ErrorCode.Engine.Transaction.Verify.SCRIPT_FORMAT_ERROR);
}
if (output.Amount != (totalFee + reward))
{
throw new CommonException(ErrorCode.Engine.Transaction.Verify.COINBASE_OUTPUT_AMOUNT_ERROR);
}
}
}
var prev4032Block = this.GetBlockMsgByHeight(newBlock.Header.Height - POW.DiffiucltyAdjustStep);
long previousBlockHeight = -1;
long previousBlockBits = -1;
if (previousBlock != null)
{
previousBlockHeight = previousBlock.Header.Height;
previousBlockBits = previousBlock.Header.Bits;
}
if (work.CalculateNextWorkTarget(previousBlockHeight, previousBlockBits, prev4032Block) != newBlock.Header.Bits)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BITS_IS_WRONG);
}
var hashResult = this.GetMiningWorkResult(newBlock);
if (work.Verify(newBlock.Header.Bits, hashResult))
{
return(true);
}
else
{
throw new CommonException(ErrorCode.Engine.Block.Verify.POW_VERIFY_FAIL);
}
}
