public void should_add_pending_transactions()
{
_transactionPool = CreatePool(_noTransactionStorage);
var transactions = AddTransactionsToPool();
_transactionPool.GetPendingTransactions().Length.Should().Be(transactions.Length);
}
public void should_delete_pending_transactions()
{
_transactionPool = CreatePool(_noTransactionStorage);
var transactions = AddTransactionsToPool();
DeleteTransactionsFromPool(transactions);
_transactionPool.GetPendingTransactions().Should().BeEmpty();
}
public void should_add_valid_transactions()
{
_transactionPool = CreatePool(_noTransactionStorage);
Transaction tx = Build.A.Transaction.SignedAndResolved(_ethereumEcdsa, TestItem.PrivateKeyA, RopstenSpecProvider.ByzantiumBlockNumber).TestObject;
AddTransactionResult result = _transactionPool.AddTransaction(tx, 1);
_transactionPool.GetPendingTransactions().Length.Should().Be(1);
result.Should().Be(AddTransactionResult.Added);
}
public void should_ignore_old_scheme_signatures()
{
_transactionPool = CreatePool(_noTransactionStorage);
Transaction tx = Build.A.Transaction.SignedAndResolved(_ethereumEcdsa, TestItem.PrivateKeyA, 1).TestObject;
AddTransactionResult result = _transactionPool.AddTransaction(tx, 1);
_transactionPool.GetPendingTransactions().Length.Should().Be(0);
result.Should().Be(AddTransactionResult.OldScheme);
}
public void should_ignore_transactions_with_different_chain_id()
{
_transactionPool = CreatePool(_noTransactionStorage);
EthereumEcdsa ecdsa = new EthereumEcdsa(MainNetSpecProvider.Instance, _logManager);
Transaction tx = Build.A.Transaction.SignedAndResolved(ecdsa, TestItem.PrivateKeyA, MainNetSpecProvider.ByzantiumBlockNumber).TestObject;
AddTransactionResult result = _transactionPool.AddTransaction(tx, 1);
_transactionPool.GetPendingTransactions().Length.Should().Be(0);
result.Should().Be(AddTransactionResult.InvalidChainId);
}
public void should_ignore_already_known()
{
_transactionPool = CreatePool(_noTransactionStorage);
Transaction tx = Build.A.Transaction.SignedAndResolved(_ethereumSigner, TestItem.PrivateKeyA, RopstenSpecProvider.ByzantiumBlockNumber).TestObject;
AddTransactionResult result1 = _transactionPool.AddTransaction(tx, 1);
AddTransactionResult result2 = _transactionPool.AddTransaction(tx, 1);
_transactionPool.GetPendingTransactions().Length.Should().Be(1);
result1.Should().Be(AddTransactionResult.Added);
result2.Should().Be(AddTransactionResult.AlreadyKnown);
}
private Block PrepareBlock(Block parentBlock)
{
BlockHeader parentHeader = parentBlock.Header;
if (parentHeader == null)
{
if (_logger.IsError)
{
_logger.Error($"Preparing new block on top of {parentBlock.ToString(Block.Format.Short)} - parent header is null");
}
return(null);
}
if (_recentNotAllowedParent == parentBlock.Hash)
{
return(null);
}
if (!_sealer.CanSeal(parentHeader.Number + 1, parentHeader.Hash))
{
if (_logger.IsInfo)
{
_logger.Info($"Not allowed to sign block ({parentBlock.Number + 1})");
}
_recentNotAllowedParent = parentHeader.Hash;
return(null);
}
if (_logger.IsInfo)
{
_logger.Info($"Preparing new block on top of {parentBlock.ToString(Block.Format.Short)}");
}
UInt256 timestamp = _timestamp.EpochSeconds;
BlockHeader header = new BlockHeader(
parentBlock.Hash,
Keccak.OfAnEmptySequenceRlp,
Address.Zero,
1,
parentBlock.Number + 1,
parentBlock.GasLimit,
timestamp > parentBlock.Timestamp ? timestamp : parentBlock.Timestamp + 1,
new byte[0]);
// If the block isn't a checkpoint, cast a random vote (good enough for now)
UInt256 number = header.Number;
// Assemble the voting snapshot to check which votes make sense
Snapshot snapshot = _snapshotManager.GetOrCreateSnapshot(number - 1, header.ParentHash);
bool isEpochBlock = (ulong)number % 30000 == 0;
if (!isEpochBlock)
{
// Gather all the proposals that make sense voting on
List <Address> addresses = new List <Address>();
foreach (var proposal in _proposals)
{
Address address = proposal.Key;
bool authorize = proposal.Value;
if (_snapshotManager.IsValidVote(snapshot, address, authorize))
{
addresses.Add(address);
}
}
// If there's pending proposals, cast a vote on them
if (addresses.Count > 0)
{
header.Beneficiary = addresses[_cryptoRandom.NextInt(addresses.Count)];
header.Nonce = _proposals[header.Beneficiary] ? Clique.NonceAuthVote : Clique.NonceDropVote;
}
}
// Set the correct difficulty
header.Difficulty = CalculateDifficulty(snapshot, _address);
header.TotalDifficulty = parentBlock.TotalDifficulty + header.Difficulty;
if (_logger.IsDebug)
{
_logger.Debug($"Setting total difficulty to {parentBlock.TotalDifficulty} + {header.Difficulty}.");
}
// Set extra data
int mainBytesLength = Clique.ExtraVanityLength + Clique.ExtraSealLength;
int signerBytesLength = isEpochBlock ? 20 * snapshot.Signers.Count : 0;
int extraDataLength = mainBytesLength + signerBytesLength;
header.ExtraData = new byte[extraDataLength];
byte[] clientName = Encoding.UTF8.GetBytes("Nethermind");
Array.Copy(clientName, header.ExtraData, clientName.Length);
if (isEpochBlock)
{
for (int i = 0; i < snapshot.Signers.Keys.Count; i++)
{
Address signer = snapshot.Signers.Keys[i];
int index = Clique.ExtraVanityLength + 20 * i;
Array.Copy(signer.Bytes, 0, header.ExtraData, index, signer.Bytes.Length);
}
}
// Mix digest is reserved for now, set to empty
header.MixHash = Keccak.Zero;
// Ensure the timestamp has the correct delay
header.Timestamp = parentBlock.Timestamp + _config.BlockPeriod;
if (header.Timestamp < _timestamp.EpochSeconds)
{
header.Timestamp = new UInt256(_timestamp.EpochSeconds);
}
var transactions = _transactionPool.GetPendingTransactions().OrderBy(t => t.Nonce).ThenByDescending(t => t.GasPrice).ThenBy(t => t.GasLimit); // by nonce in case there are two transactions for the same account
var selectedTxs = new List <Transaction>();
BigInteger gasRemaining = header.GasLimit;
if (_logger.IsDebug)
{
_logger.Debug($"Collecting pending transactions at min gas price {MinGasPriceForMining} and block gas limit {gasRemaining}.");
}
int total = 0;
_stateProvider.StateRoot = parentHeader.StateRoot;
Dictionary <Address, UInt256> nonces = new Dictionary <Address, UInt256>();
foreach (Transaction transaction in transactions)
{
total++;
if (transaction.SenderAddress == null)
{
if (_logger.IsError)
{
_logger.Error("Rejecting null sender pending transaction.");
}
continue;
}
if (transaction.GasPrice < MinGasPriceForMining)
{
if (_logger.IsTrace)
{
_logger.Trace($"Rejecting transaction - gas price ({transaction.GasPrice}) too low (min gas price: {MinGasPriceForMining}.");
}
continue;
}
if (transaction.Nonce != _stateProvider.GetNonce(transaction.SenderAddress) && (!nonces.ContainsKey(transaction.SenderAddress) || nonces[transaction.SenderAddress] + 1 != transaction.Nonce))
{
if (_logger.IsTrace)
{
_logger.Trace($"Rejecting transaction based on nonce.");
}
continue;
}
if (transaction.GasLimit > gasRemaining)
{
if (_logger.IsTrace)
{
_logger.Trace($"Rejecting transaction - gas limit ({transaction.GasPrice}) more than remaining gas ({gasRemaining}).");
}
continue;
}
UInt256 requiredBalance = transaction.GasLimit + transaction.Value;
UInt256 balance = _stateProvider.GetBalance(transaction.SenderAddress);
if (transaction.GasLimit + transaction.Value > balance)
{
if (_logger.IsTrace)
{
_logger.Trace($"Rejecting transaction - insufficient balance - required {requiredBalance}, actual {balance}.");
}
continue;
}
selectedTxs.Add(transaction);
nonces[transaction.SenderAddress] = transaction.Nonce;
gasRemaining -= transaction.GasLimit;
}
if (_logger.IsDebug)
{
_logger.Debug($"Collected {selectedTxs.Count} out of {total} pending transactions.");
}
Block block = new Block(header, selectedTxs, new BlockHeader[0]);
header.TransactionsRoot = block.CalculateTransactionsRoot();
block.Author = _address;
return(block);
}
private Block PrepareBlock()
{
BlockHeader parentHeader = _blockTree.Head;
if (parentHeader == null)
{
return(null);
}
Block parent = _blockTree.FindBlock(parentHeader.Hash, false);
UInt256 timestamp = _timestamp.EpochSeconds;
BlockHeader header = new BlockHeader(
parent.Hash,
Keccak.OfAnEmptySequenceRlp,
Address.Zero,
1,
parent.Number + 1,
parent.GasLimit,
timestamp > parent.Timestamp ? timestamp : parent.Timestamp + 1,
Encoding.UTF8.GetBytes("Nethermind"));
header.TotalDifficulty = parent.TotalDifficulty + header.Difficulty;
if (_logger.IsDebug)
{
_logger.Debug($"Setting total difficulty to {parent.TotalDifficulty} + {header.Difficulty}.");
}
var transactions = _transactionPool.GetPendingTransactions().OrderBy(t => t?.Nonce); // by nonce in case there are two transactions for the same account
var selectedTxs = new List <Transaction>();
BigInteger gasRemaining = header.GasLimit;
if (_logger.IsDebug)
{
_logger.Debug($"Collecting pending transactions at min gas price {MinGasPriceForMining} and block gas limit {gasRemaining}.");
}
int total = 0;
foreach (Transaction transaction in transactions)
{
total++;
if (transaction == null)
{
throw new InvalidOperationException("Block transaction is null");
}
if (transaction.GasPrice < MinGasPriceForMining)
{
if (_logger.IsTrace)
{
_logger.Trace($"Rejecting transaction - gas price ({transaction.GasPrice}) too low (min gas price: {MinGasPriceForMining}.");
}
continue;
}
if (transaction.GasLimit > gasRemaining)
{
if (_logger.IsTrace)
{
_logger.Trace($"Rejecting transaction - gas limit ({transaction.GasPrice}) more than remaining gas ({gasRemaining}).");
}
break;
}
selectedTxs.Add(transaction);
gasRemaining -= transaction.GasLimit;
}
if (_logger.IsDebug)
{
_logger.Debug($"Collected {selectedTxs.Count} out of {total} pending transactions.");
}
Block block = new Block(header, selectedTxs, new BlockHeader[0]);
header.TransactionsRoot = block.CalculateTransactionsRoot();
return(block);
}
public TransactionPoolInfo GetTransactionPoolInfo() => _transactionPoolInfoProvider.GetInfo(_transactionPool.GetPendingTransactions());