private Block CreateNewBlock(ChainedBlock pindexPrev, bool proofOfStake, out long fee)
{
fee = 0;
// create the block
var block = new Block();
var height = pindexPrev.Height + 1;
// Create coinbase tx
var txNew = new Transaction();
txNew.AddInput(new TxIn());
txNew.AddOutput(new TxOut(Money.Zero, Script.Empty));
if (!proofOfStake)
{
throw new MinedBlockException("Only POS transactions supported");
}
else
{
// Height first in coinbase required for block.version=2
txNew.Inputs[0].ScriptSig = new Script(BitConverter.GetBytes(height)); //(CScript() << nHeight) + COINBASE_FLAGS;
if (!(txNew.Inputs[0].ScriptSig.Length <= 100))
{
throw new MinedBlockException();
}
}
// Add our coinbase tx as first transaction
block.AddTransaction(txNew);
// Largest block you're willing to create:
uint nBlockMaxSize = 1000000 / 2 / 2; //GetArg("-blockmaxsize", MAX_BLOCK_SIZE_GEN / 2);
// Limit to betweeen 1K and MAX_BLOCK_SIZE-1K for sanity:
nBlockMaxSize = Math.Max((uint)1000, Math.Min((uint)(1000000 - 1000), nBlockMaxSize));
// How much of the block should be dedicated to high-priority transactions,
// included regardless of the fees they pay
uint nBlockPrioritySize = 27000; //GetArg("-blockprioritysize", 27000);
nBlockPrioritySize = Math.Min(nBlockMaxSize, nBlockPrioritySize);
// Minimum block size you want to create; block will be filled with free transactions
// until there are no more or the block reaches this size:
uint nBlockMinSize = 0; //GetArg("-blockminsize", 0);
nBlockMinSize = Math.Min(nBlockMaxSize, nBlockMinSize);
// Fee-per-kilobyte amount considered the same as "free"
// Be careful setting this: if you set it to zero then
// a transaction spammer can cheaply fill blocks using
// 1-satoshi-fee transactions. It should be set above the real
// cost to you of processing a transaction.
long nMinTxFee = 10000; //MIN_TX_FEE;
//if (mapArgs.count("-mintxfee"))
// ParseMoney(mapArgs["-mintxfee"], nMinTxFee);
block.Header.Bits = BlockValidator.GetNextTargetRequired(pindexPrev, this.Context.Network.Consensus, proofOfStake);
// Collect memory pool transactions into the block
// ============================
// todo: add transactions from the mem pool when its implemented
// ============================
//if (fDebug && GetBoolArg("-printpriority", false))
// LogPrintf("CreateNewBlock(): total size %u\n", nBlockSize);
if (!proofOfStake)
{
block.Transactions[0].Outputs[0].Value = BlockValidator.GetProofOfWorkReward(this.chainIndex, fee);
}
//if (pFees)
// *pFees = nFees;
// Fill in header
block.Header.HashPrevBlock = pindexPrev.HashBlock;
block.Header.BlockTime = pindexPrev.GetMedianTimePast() + TimeSpan.FromSeconds(1.0); //pblock->nTime = max(pindexPrev->GetPastTimeLimit() + 1, pblock->GetMaxTransactionTime());
if (!proofOfStake)
{
block.Header.UpdateTime(this.Context.Network, pindexPrev);
}
block.Header.Nonce = 0;
return(block);
}
