public Block MineNextBlock(string minerAddress, int difficulty)
{
// Prepare the next block for mining
var oldDifficulty = this.CurrentDifficulty;
this.CurrentDifficulty = difficulty;
var nextBlock = this.GetMiningJob(minerAddress);
this.CurrentDifficulty = oldDifficulty;
// Mine the next block
nextBlock.DateCreated = GeneralUtils.NowInISO8601();
nextBlock.Nonce = 0;
do
{
nextBlock.Nonce++;
nextBlock.BlockHash = nextBlock.CalculateBlockHash();
} while (!ValidationUtils.IsValidDifficulty(CryptoUtils.BytesToHex(nextBlock.BlockHash), difficulty));
// Submit the mined block
var newBlock = this.SubmitMinedBlock(nextBlock.BlockDataHash, // ?? thing if I have to recalculate that
nextBlock.DateCreated, nextBlock.Nonce, nextBlock.BlockHash);
return(newBlock);
}
public Block SubmitMinedBlock(byte[] blockDataHash, string dateCreated, ulong nonce, byte[] blockHash)
{
// Find the block candidate by its data hash
var newBlock = this.MiningJobs[CryptoUtils.BytesToHex(blockDataHash)];
if (newBlock == null)
{
throw new ArgumentException("Block not found or already mined");
}
// Build the new block
newBlock.DateCreated = dateCreated;
newBlock.Nonce = nonce;
newBlock.BlockHash = newBlock.CalculateBlockHash();
// We can not compare block hash because the one we have in newBlock is not ok
// Validate the block hash + the proof of work
//if (CryptoUtils.BytesToHex(newBlock.BlockHash) != CryptoUtils.BytesToHex(blockHash))
// throw new ArgumentException("Block hash is incorrectly calculated");
if (!ValidationUtils.IsValidDifficulty(
CryptoUtils.BytesToHex(newBlock.BlockHash), newBlock.Difficulty))
{
throw new ArgumentException("The calculated block hash does not match the block difficulty");
}
newBlock = this.ExtendChain(newBlock);
//if (!newBlock.errorMsg)
// logger.debug("Mined a new block: " + JSON.stringify(newBlock));
return(newBlock);
}
public void Test_IsValidDifficulty_When_Not_Valid()
{
Assert.False(ValidationUtils.IsValidDifficulty("00000f1212", 6));
//Assert.ThrowsAny<FormatException>(() => ValidationUtils.IsValidSignatureFormat(sig));
}