private async Task SendConsensusRequestAsync()
{
if (!context.Valid)
{
return;
}
BlockConsensusRequest request = context.CreateRequest(wallet);
//TODO: 签名
//request.Script = wallet.Sign(request);
await localnode.RelayAsync(request);
}
private async void StartMine(CancellationToken token)
{
while (wallet == null && !token.IsCancellationRequested)
{
await Task.Delay(100);
}
while (!token.IsCancellationRequested)
{
ECPoint[] miners = Blockchain.Default.GetMiners();
bool is_miner = false;
foreach (Account account in wallet.GetAccounts())
{
if (miners.Contains(account.PublicKey))
{
is_miner = true;
break;
}
}
if (!is_miner)
{
try
{
await Task.Delay(Blockchain.TimePerBlock, token);
}
catch (TaskCanceledException) { }
continue;
}
Block header = Blockchain.Default.GetHeader(Blockchain.Default.CurrentBlockHash);
if (header == null)
{
continue;
}
TimeSpan timespan = header.Timestamp.ToDateTime() + Blockchain.TimePerBlock - DateTime.Now;
if (timespan > TimeSpan.Zero)
{
try
{
await Task.Delay(timespan, token);
}
catch (TaskCanceledException) { }
if (token.IsCancellationRequested)
{
break;
}
}
byte[] nonce_data = new byte[sizeof(ulong)];
using (RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider())
{
rng.GetBytes(nonce_data);
}
ulong nonce = BitConverter.ToUInt64(nonce_data, 0);
List <Transaction> transactions = Blockchain.Default.GetMemoryPool().ToList();
transactions.Insert(0, CreateGenerationTransaction(transactions, header.Height + 1, nonce));
Block block = new Block
{
PrevBlock = header.Hash,
Timestamp = DateTime.Now.ToTimestamp(),
Height = header.Height + 1,
Nonce = nonce,
NextMiner = Blockchain.GetMinerAddress(Blockchain.Default.GetMiners(transactions).ToArray()),
Transactions = transactions.ToArray()
};
block.RebuildMerkleRoot();
wallet.Sign(block, miners);
await LocalNode.RelayAsync(block);
while (Blockchain.Default.CurrentBlockHash != block.Hash && !token.IsCancellationRequested)
{
await Task.Delay(100, token);
}
}
stopped = true;
}
