private void OnTimeout(object state)
{
lock (context)
{
if (timer_height != context.BlockIndex || timer_view != context.ViewNumber)
{
return;
}
Log($"timeout: height={timer_height} view={timer_view} state={context.State}");
if (context.State.HasFlag(ConsensusState.Primary) && !context.State.HasFlag(ConsensusState.RequestSent))
{
Log($"send prepare request: height={timer_height} view={timer_view}");
context.State |= ConsensusState.RequestSent;
if (!context.State.HasFlag(ConsensusState.SignatureSent))
{
context.Timestamp = Math.Max(DateTime.Now.ToTimestamp(), Blockchain.Default.GetHeader(context.PrevHash).Timestamp + 1);
context.Nonce = GetNonce();
List <Transaction> transactions = LocalNode.GetMemoryPool().Where(p => CheckPolicy(p)).ToList();
Dictionary <UInt160, Transaction> scriptHashDictionary = new Dictionary <UInt160, Transaction>();
Console.WriteLine("Mempool count " + transactions.Count.ToString());
for (int i = 0; i < transactions.Count; i++)
{
if (transactions[i].Type == TransactionType.MinerTransaction ||
transactions[i].Type == TransactionType.AnonymousContractTransaction ||
transactions[i].Type == TransactionType.RingConfidentialTransaction)
{
continue;
}
if (transactions[i].Inputs == null || transactions[i].Inputs.Length == 0)
{
continue;
}
if (transactions[i].References == null)
{
transactions.RemoveAt(i);
i--;
continue;
}
if (transactions[i].Inputs.Length > 0 &&
transactions[i].References.ContainsKey(transactions[i].Inputs[0]) &&
LocalNode.KnownHashes.Count > 0)
{
UInt160 scripthash = transactions[i].References[transactions[i].Inputs[0]].ScriptHash;
if (scriptHashDictionary.ContainsKey(scripthash))
{
Transaction prevTx = scriptHashDictionary[scripthash];
if (LocalNode.KnownHashes.IndexOf(prevTx.Hash) > LocalNode.KnownHashes.IndexOf(transactions[i].Hash))
{
scriptHashDictionary[scripthash] = transactions[i];
transactions.Remove(prevTx);
}
else
{
transactions.RemoveAt(i);
}
i--;
}
else
{
scriptHashDictionary.Add(scripthash, transactions[i]);
}
}
}
Transaction[] tmpool = LocalNode.GetMemoryPool().ToArray();
List <Transaction> consensus_transactions = new List <Transaction>();
for (int i = 0; i < transactions.Count; i++)
{
Transaction tx = transactions[i];
if (!tx.Verify(tmpool))
{
Console.Write("Transaction verify failed : ");
transactions.RemoveAt(i);
LocalNode.RemoveTxFromMempool(tx.Hash);
i--;
Console.WriteLine(tx.ToJsonString());
continue;
}
UInt160 fromScriptHash = LocalNode.GetFromAddressFromTx(tx); Console.WriteLine("Step_1_2");
if (Blockchain.IsConsensusAddress(fromScriptHash))
{
consensus_transactions.Add(tx);
continue;
}
else if (tx.GetFee() == Fixed8.Zero && fromScriptHash != UInt160.Zero)
{
if (LocalNode.freetx_pool.ContainsKey(fromScriptHash) &&
LocalNode.freetx_pool[fromScriptHash].Count >= Blockchain.Default.FreeTransactionLimitPerPeriod &&
Blockchain.Default.Height - LocalNode.freetx_pool[fromScriptHash].ElementAt(LocalNode.freetx_pool[fromScriptHash].Count - 1) < Blockchain.Default.FreeTransactionBlockPeriodNum)
{
UInt256 removalHash = transactions[i].Hash;
Console.WriteLine("TX removed " + removalHash);
LocalNode.RemoveTxFromMempool(removalHash);
transactions.RemoveAt(i);
i--;
}
else
{
localNode.AddFreeTxAddressToPool(fromScriptHash);
foreach (RemoteNode node in LocalNode.Default.GetRemoteNodes()) // enqueue message
{
node.EnqueueMessage("blockfree", fromScriptHash);
}
}
}
}
if (transactions.Count >= MaxTransactionsPerBlock)
{
transactions = consensus_transactions.Concat(transactions.OrderByDescending(p => p.NetworkFee / p.Size).Take(MaxTransactionsPerBlock - 1 - consensus_transactions.Count).ToList()).ToList();
}
transactions.Insert(0, CreateMinerTransaction(transactions, context.BlockIndex, context.Nonce));
context.TransactionHashes = transactions.Select(p => p.Hash).ToArray();
context.Transactions = transactions.ToDictionary(p => p.Hash);
context.CurrentConsensus = wallet.GetChangeAddress();
context.NextConsensus = Blockchain.GetConsensusAddress(Blockchain.Default.GetValidators(transactions).ToArray());
context.Signatures[context.MyIndex] = context.MakeHeader().Sign((KeyPair)wallet.GetKey(context.Validators[context.MyIndex]));
}
SignAndRelay(context.MakePrepareRequest());
timer.Change(TimeSpan.FromSeconds(Blockchain.SecondsPerBlock << (timer_view + 1)), Timeout.InfiniteTimeSpan);
}
else if ((context.State.HasFlag(ConsensusState.Primary) && context.State.HasFlag(ConsensusState.RequestSent)) || context.State.HasFlag(ConsensusState.Backup))
{
RequestChangeView();
}
}
}