static async Task DoStuff()
{
MiningBlockInfoResponse lastBlockInfo = null;
Task <Tuple <ulong, DateTime> > t = null;
while (true)
{
var bi = GetLatestBlockInfo(myAddress);
if (bi == null)
{
Console.WriteLine("No connection to server, sleeping for a second..");
await Task.Delay(1000);
continue;
}
if (t == null)//nothing here, let's do some mining
{
Console.WriteLine($"[{DateTime.UtcNow}] Mining started, block {bi.Index}, hash: {bi.BlockDataHash}, difficulty: {bi.Difficulty}");
t = MineAsync(bi.BlockDataHash, bi.Difficulty);
lastBlockInfo = bi;
}
else if (t.IsCompleted) //we're done, let's get some $$
{
if (SubmitMinedBlockInfo(myAddress, t.Result.Item1, t.Result.Item2, lastBlockInfo.BlockDataHash))
{
Console.WriteLine($"[{DateTime.UtcNow}] Found a result for block {lastBlockInfo.Index}, $$ is on the way");
}
t = null;
}
else if (lastBlockInfo.Index < bi.Index)
{//new block, start mining it
Console.WriteLine($"[{DateTime.UtcNow}] New block, ditching the old one and starting the new one");
t = null;
}
else if (lastBlockInfo.BlockDataHash != bi.BlockDataHash && lastBlockInfo.Transactions[0].Value < bi.Transactions[0].Value)
{//better reward, let's cancel and start mining again
Console.WriteLine($"[{DateTime.UtcNow}] Higher reward, ditching the old job and starting the new one");
t = null;
}
else //same block, and we're still mining, so will sit for a second and see what comes next;
{
await Task.Delay(1000);
}
}
}
public MiningBlockInfo GetMiningBlockInfo(string address)
{
lock (dbService.GetTransactionsLockObject())
{
var transactions = new List <Transaction>(dbService.GetTransactions().ToArray());//shallow copy, so we can keep a snapshot
var lbi = dbService.GetLastBlock().Index + 1;
//reward for the miner
var t = new Transaction()
{
DateCreated = DateTime.UtcNow,
Fee = 0,
To = address,
Value = appSettings.MinerReward + transactions.Aggregate(0, (sum, tr) => sum + tr.Fee),
From = ZERO_HASH,
MinedInBlockIndex = lbi,
TransferSuccessful = true
};
t.TransactionHashHex = t.CalculateTransactionHashHex();
transactions.Insert(0, t);
var info = new MiningBlockInfo
{
Difficulty = appSettings.Difficulty,
Index = lbi,
MinedBy = address,
PreviousBlockHash = dbService.GetLastBlock().BlockHash,
Transactions = transactions
};
dbService.AddMiningInfo(info);
return(MiningBlockInfoResponse.FromMiningBlockInfo(info));
}
}
