public Block CreateBlock(BlockChain _Chain, Hash _blockHash, DateTime _dateTimeStampBlock)
{
int blockTimeDrift;
//Gets the height of the blockChain when creating a new block
blockHeight = _Chain.GetHeight();
blockHeight--; //It's the number of blocks away from the Genesis, so 1 becomes 0
//Create a new block
Block ParentBlock = _Chain.GetBlock(blockHeight - 1);
blockDateTimeStamp = _dateTimeStampBlock; //Always use UTC
parentHash = null;
difficulty = BlockDifficulty.GetCurrentBlockDifficulty(); //Determine and write block difficulty
blockHash = _blockHash;
if (ParentBlock != null)
{
parentHash = ParentBlock.GetHash();
blockTimeDrift = (blockDateTimeStamp - ParentBlock.blockDateTimeStamp).Seconds;
if (blockTimeDrift < Parameters.GetParameter().AllowedMinimalBlocktime)
{
//Possible timewarp attack, block
Console.WriteLine("Block too fast, prohibit time warping");
throw new Exception("Block too fast");
}
}
ObjectSerializerBlock.WriteBlockToBlob(this, this.blockHeight);
//TODO: Should be used when retrieving blocks loading the chain....ObjectSerializerBlock.ReadBlobToBlock(this.blockHeight);
return(this);
}
public Boolean AddTransactionToBlock(BlockChain _chain, BlockTransaction _transAction)
{
TargetBlock = _chain.GetBlock(_transAction.blockHeight);
if (TargetBlock == null)
{
throw new InvalidOperationException("Block you want to add the transaction to does not exist on the chain");
}
if (!_transAction.isSigned)
{
throw new InvalidOperationException("Transaction is not signed, cannot be added to the chain");
}
TargetBlock.AddTransaction(this);
return(true);
}