public static void processPendingTransactions()
{
// TODO TODO improve to include failed transactions
ulong last_block_height = IxianHandler.getLastBlockHeight();
lock (PendingTransactions.pendingTransactions)
{
long cur_time = Clock.getTimestamp();
List <PendingTransaction> tmp_pending_transactions = new List <PendingTransaction>(PendingTransactions.pendingTransactions);
int idx = 0;
foreach (var entry in tmp_pending_transactions)
{
Transaction t = entry.transaction;
long tx_time = entry.addedTimestamp;
if (t.applied != 0)
{
PendingTransactions.pendingTransactions.RemoveAll(x => x.transaction.id.SequenceEqual(t.id));
continue;
}
// if transaction expired, remove it from pending transactions
if (last_block_height > ConsensusConfig.getRedactedWindowSize() && t.blockHeight < last_block_height - ConsensusConfig.getRedactedWindowSize())
{
ActivityStorage.updateStatus(t.id, ActivityStatus.Error, 0);
PendingTransactions.pendingTransactions.RemoveAll(x => x.transaction.id.SequenceEqual(t.id));
continue;
}
if (cur_time - tx_time > 40) // if the transaction is pending for over 40 seconds, resend
{
CoreProtocolMessage.broadcastProtocolMessage(new char[] { 'M', 'H' }, ProtocolMessageCode.transactionData, t.getBytes(), null);
entry.addedTimestamp = cur_time;
entry.confirmedNodeList.Clear();
}
if (entry.confirmedNodeList.Count() >= 3) // if we get transaction from 3 nodes, we can consider it as confirmed
{
if (entry.messageId != null)
{
StreamProcessor.confirmMessage(entry.messageId);
}
continue;
}
if (cur_time - tx_time > 20) // if the transaction is pending for over 20 seconds, send inquiry
{
CoreProtocolMessage.broadcastGetTransaction(t.id, 0, null, false);
}
idx++;
}
}
}
public static void processPendingTransactions()
{
// TODO TODO improve to include failed transactions
ulong last_block_height = IxianHandler.getLastBlockHeight();
lock (PendingTransactions.pendingTransactions)
{
long cur_time = Clock.getTimestamp();
List <PendingTransaction> tmp_pending_transactions = new List <PendingTransaction>(PendingTransactions.pendingTransactions);
int idx = 0;
foreach (var entry in tmp_pending_transactions)
{
Transaction t = entry.transaction;
long tx_time = entry.addedTimestamp;
if (t.applied != 0)
{
PendingTransactions.pendingTransactions.RemoveAll(x => x.transaction.id.SequenceEqual(t.id));
continue;
}
// if transaction expired, remove it from pending transactions
if (last_block_height > ConsensusConfig.getRedactedWindowSize() && t.blockHeight < last_block_height - ConsensusConfig.getRedactedWindowSize())
{
Console.WriteLine("Error sending the transaction {0}", Transaction.txIdV8ToLegacy(t.id));
PendingTransactions.pendingTransactions.RemoveAll(x => x.transaction.id.SequenceEqual(t.id));
continue;
}
if (cur_time - tx_time > 40) // if the transaction is pending for over 40 seconds, resend
{
CoreProtocolMessage.broadcastProtocolMessage(new char[] { 'M', 'H' }, ProtocolMessageCode.transactionData, t.getBytes(), null);
entry.addedTimestamp = cur_time;
entry.confirmedNodeList.Clear();
}
if (entry.confirmedNodeList.Count() > 3) // already received 3+ feedback
{
continue;
}
if (cur_time - tx_time > 20) // if the transaction is pending for over 20 seconds, send inquiry
{
CoreProtocolMessage.broadcastGetTransaction(Transaction.txIdV8ToLegacy(t.id), 0);
}
idx++;
}
}
}
override protected bool sendInventoryRequest(InventoryItem item, RemoteEndpoint endpoint)
{
switch (item.type)
{
case InventoryItemTypes.block:
return(handleBlock(item, endpoint));
case InventoryItemTypes.blockSignature:
return(handleSignature(item, endpoint));
case InventoryItemTypes.keepAlive:
return(handleKeepAlive(item, endpoint));
case InventoryItemTypes.transaction:
CoreProtocolMessage.broadcastGetTransaction(item.hash, 0, endpoint);
return(true);
}
return(false);
}
public void insertMessage(FriendMessage message)
{
if (friend.approved == false)
{
if (message.type == FriendMessageType.requestAdd)
{
// Call webview methods on the main UI thread only
Utils.sendUiCommand(webView, "showContactRequest", "1");
message.read = true;
return;
}
}
else
{
// Don't show if the friend is already approved
if (message.type == FriendMessageType.requestAdd)
{
return;
}
}
string prefix = "addMe";
string avatar = "";
string address = "";
string nick = "";
if (!message.localSender)
{
if (friend.bot)
{
if (message.senderAddress != null)
{
address = Base58Check.Base58CheckEncoding.EncodePlain(message.senderAddress);
}
nick = message.senderNick;
if (nick == "")
{
if (message.senderAddress != null && friend.contacts.ContainsKey(message.senderAddress))
{
nick = friend.contacts[message.senderAddress].nick;
}
}
if (nick == "")
{
nick = address;
}
}
prefix = "addThem";
if (message.senderAddress != null)
{
avatar = Node.localStorage.getAvatarPath(Base58Check.Base58CheckEncoding.EncodePlain(message.senderAddress));
}
else
{
avatar = Node.localStorage.getAvatarPath(Base58Check.Base58CheckEncoding.EncodePlain(friend.walletAddress));
}
if (avatar == null)
{
avatar = "img/spixiavatar.png";
}
}
if (message.type == FriendMessageType.requestFunds)
{
string status = "WAITING CONFIRMATION";
string status_icon = "fa-clock";
string amount = message.message;
string txid = "";
bool enableView = false;
if (!message.localSender)
{
enableView = true;
}
if (message.message.StartsWith("::"))
{
status = "DECLINED";
status_icon = "fa-exclamation-circle";
amount = message.message.Substring(2);
txid = Crypto.hashToString(message.id);
enableView = false;
}
else if (message.message.StartsWith(":"))
{
status = "PENDING";
txid = message.message.Substring(1);
bool confirmed = true;
Transaction transaction = TransactionCache.getTransaction(txid);
if (transaction == null)
{
transaction = TransactionCache.getUnconfirmedTransaction(txid);
confirmed = false;
}
amount = "?";
if (transaction != null)
{
amount = transaction.amount.ToString();
if (confirmed)
{
status = "CONFIRMED";
status_icon = "fa-check-circle";
}
}
else
{
// TODO think about how to make this more private
CoreProtocolMessage.broadcastGetTransaction(txid, 0, null);
}
enableView = true;
}
if (message.localSender)
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), txid, address, nick, avatar, "Payment request SENT", amount, status, status_icon, message.timestamp.ToString(), message.localSender.ToString(), message.confirmed.ToString(), message.read.ToString(), enableView.ToString());
}
else
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), txid, address, nick, avatar, "Payment request RECEIVED", amount, status, status_icon, message.timestamp.ToString(), "", message.confirmed.ToString(), message.read.ToString(), enableView.ToString());
}
}
if (message.type == FriendMessageType.sentFunds)
{
bool confirmed = true;
Transaction transaction = TransactionCache.getTransaction(message.message);
if (transaction == null)
{
transaction = TransactionCache.getUnconfirmedTransaction(message.message);
confirmed = false;
}
string status = "PENDING";
string status_icon = "fa-clock";
string amount = "?";
if (transaction != null)
{
if (confirmed)
{
status = "CONFIRMED";
status_icon = "fa-check-circle";
}
if (message.localSender)
{
amount = transaction.amount.ToString();
}
else
{
amount = HomePage.calculateReceivedAmount(transaction).ToString();
}
}
else
{
// TODO think about how to make this more private
CoreProtocolMessage.broadcastGetTransaction(message.message, 0, null);
}
// Call webview methods on the main UI thread only
if (message.localSender)
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), message.message, address, nick, avatar, "Payment SENT", amount, status, status_icon, message.timestamp.ToString(), message.localSender.ToString(), message.confirmed.ToString(), message.read.ToString(), "True");
}
else
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), message.message, address, nick, avatar, "Payment RECEIVED", amount, status, status_icon, message.timestamp.ToString(), "", message.confirmed.ToString(), message.read.ToString(), "True");
}
}
if (message.type == FriendMessageType.fileHeader)
{
string[] split = message.message.Split(new string[] { ":" }, StringSplitOptions.None);
if (split != null && split.Length > 1)
{
string uid = split[0];
string name = split[1];
string progress = "0";
if (message.completed)
{
progress = "100";
}
Utils.sendUiCommand(webView, "addFile", Crypto.hashToString(message.id), address, nick, avatar, uid, name, message.timestamp.ToString(), message.localSender.ToString(), message.confirmed.ToString(), message.read.ToString(), progress, message.completed.ToString());
}
}
if (message.type == FriendMessageType.standard)
{
// Normal chat message
// Call webview methods on the main UI thread only
Utils.sendUiCommand(webView, prefix, Crypto.hashToString(message.id), address, nick, avatar, message.message, message.timestamp.ToString(), message.confirmed.ToString(), message.read.ToString());
}
updateMessageReadStatus(message);
}
private void rollForward()
{
bool sleep = false;
ulong lowestBlockNum = getLowestBlockNum();
ulong syncToBlock = syncTargetBlockNum;
if (Node.blockChain.Count > 5)
{
lock (pendingBlocks)
{
pendingBlocks.RemoveAll(x => x.blockNum < Node.blockChain.getLastBlockNum() - 5);
}
}
lock (pendingBlocks)
{
// Loop until we have no more pending blocks
do
{
handleWatchDog();
ulong next_to_apply = lowestBlockNum;
if (Node.blockChain.Count > 0)
{
next_to_apply = Node.blockChain.getLastBlockNum() + 1;
}
if (next_to_apply > syncToBlock)
{
// we have everything, clear pending blocks and break
pendingBlocks.Clear();
lock (requestedBlockTimes)
{
requestedBlockTimes.Clear();
}
break;
}
Block b = pendingBlocks.Find(x => x.blockNum == next_to_apply);
if (b == null)
{
lock (requestedBlockTimes)
{
if (requestBlockAgain(next_to_apply))
{
// the node isn't connected yet, wait a while
sleep = true;
}
}
break;
}
b = new Block(b);
if (b.version > Block.maxVersion)
{
Logging.error("Received block {0} with a version higher than this node can handle, discarding the block.", b.blockNum);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
Node.blockProcessor.networkUpgraded = true;
sleep = true;
break;
}
else
{
Node.blockProcessor.networkUpgraded = false;
}
if (next_to_apply > 5)
{
ulong targetBlock = next_to_apply - 5;
Block tb = pendingBlocks.Find(x => x.blockNum == targetBlock);
if (tb != null)
{
if (tb.blockChecksum.SequenceEqual(Node.blockChain.getBlock(tb.blockNum).blockChecksum) && Node.blockProcessor.verifyBlockBasic(tb) == BlockVerifyStatus.Valid)
{
if (Node.blockProcessor.verifyBlockSignatures(tb))
{
Node.blockChain.refreshSignatures(tb, true);
}
else
{
Logging.warn("Target block " + tb.blockNum + " does not have the required consensus.");
}
}
pendingBlocks.RemoveAll(x => x.blockNum == tb.blockNum);
}
}
try
{
Logging.info(String.Format("Sync: Applying block #{0}/{1}.",
b.blockNum, syncToBlock));
bool ignoreWalletState = true;
if (b.blockNum > wsSyncConfirmedBlockNum || Config.fullStorageDataVerification)
{
ignoreWalletState = false;
}
b.powField = null;
// wallet state is correct as of wsConfirmedBlockNumber, so before that we call
// verify with a parameter to ignore WS tests, but do all the others
BlockVerifyStatus b_status = BlockVerifyStatus.Valid;
if (b.fromLocalStorage)
{
bool missing = false;
foreach (string txid in b.transactions)
{
if (!running)
{
break;
}
Transaction t = TransactionPool.getTransaction(txid, b.blockNum, true);
if (t != null)
{
t.applied = 0;
if (!TransactionPool.addTransaction(t, true, null, Config.fullStorageDataVerification))
{
Logging.error("Error adding a transaction {0} from storage", txid);
}
}
else
{
CoreProtocolMessage.broadcastGetTransaction(txid, b.blockNum);
missing = true;
}
}
if (missing)
{
sleep = true;
break;
}
}
if (b.blockNum > wsSyncConfirmedBlockNum || b.fromLocalStorage == false || Config.fullStorageDataVerification)
{
b_status = Node.blockProcessor.verifyBlock(b, ignoreWalletState);
}
else
{
b_status = Node.blockProcessor.verifyBlockBasic(b, false);
}
if (b_status == BlockVerifyStatus.Indeterminate)
{
Logging.info(String.Format("Waiting for missing transactions from block #{0}...", b.blockNum));
Thread.Sleep(100);
return;
}
if (b_status != BlockVerifyStatus.Valid)
{
Logging.warn(String.Format("Block #{0} {1} is invalid. Discarding and requesting a new one.", b.blockNum, Crypto.hashToString(b.blockChecksum)));
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
if (!b.fromLocalStorage && !Node.blockProcessor.verifyBlockSignatures(b) && Node.blockChain.Count > 16)
{
Logging.warn(String.Format("Block #{0} {1} doesn't have the required consensus. Discarding and requesting a new one.", b.blockNum, Crypto.hashToString(b.blockChecksum)));
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
bool sigFreezeCheck = Node.blockProcessor.verifySignatureFreezeChecksum(b, null);
// Apply transactions when rolling forward from a recover file without a synced WS
if (b.blockNum > wsSyncConfirmedBlockNum)
{
if (Node.blockChain.Count <= 5 || sigFreezeCheck)
{
Node.blockProcessor.applyAcceptedBlock(b);
if (b.version >= BlockVer.v5 && b.lastSuperBlockChecksum == null)
{
// skip WS checksum check
}
else
{
if (b.lastSuperBlockChecksum != null || b.blockNum % Config.saveWalletStateEveryBlock == 0)
{
byte[] wsChecksum = Node.walletState.calculateWalletStateChecksum();
if (wsChecksum == null || !wsChecksum.SequenceEqual(b.walletStateChecksum))
{
Logging.error(String.Format("After applying block #{0}, walletStateChecksum is incorrect!. Block's WS: {1}, actual WS: {2}", b.blockNum, Crypto.hashToString(b.walletStateChecksum), Crypto.hashToString(wsChecksum)));
handleWatchDog(true);
return;
}
}
}
if (b.blockNum % Config.saveWalletStateEveryBlock == 0)
{
DLT.Meta.WalletStateStorage.saveWalletState(b.blockNum);
}
}
}
else
{
if (syncToBlock == b.blockNum)
{
if (b.version >= BlockVer.v5 && b.lastSuperBlockChecksum == null)
{
// skip WS checksum check
}
else
{
byte[] wsChecksum = Node.walletState.calculateWalletStateChecksum();
if (wsChecksum == null || !wsChecksum.SequenceEqual(b.walletStateChecksum))
{
Logging.warn(String.Format("Block #{0} is last and has an invalid WSChecksum. Discarding and requesting a new one.", b.blockNum));
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
handleWatchDog(true);
return;
}
}
}
}
if (Node.blockChain.Count <= 5 || sigFreezeCheck)
{
//Logging.info(String.Format("Appending block #{0} to blockChain.", b.blockNum));
if (b.blockNum <= wsSyncConfirmedBlockNum)
{
if (!TransactionPool.setAppliedFlagToTransactionsFromBlock(b))
{
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
}
if (b.blockNum > 12 && b.blockNum + 5 >= IxianHandler.getHighestKnownNetworkBlockHeight())
{
if (Node.isMasterNode())
{
byte[][] signature_data = b.applySignature(); // applySignature() will return signature_data, if signature was applied and null, if signature was already present from before
if (signature_data != null)
{
// ProtocolMessage.broadcastNewBlock(localNewBlock);
ProtocolMessage.broadcastNewBlockSignature(b.blockNum, b.blockChecksum, signature_data[0], signature_data[1]);
}
}
}
Node.blockChain.appendBlock(b, !b.fromLocalStorage);
resetWatchDog(b.blockNum);
}
else if (Node.blockChain.Count > 5 && !sigFreezeCheck)
{
// invalid sigfreeze, waiting for the correct block
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
return;
}
}
catch (Exception e)
{
Logging.error(String.Format("Exception occured while syncing block #{0}: {1}", b.blockNum, e));
}
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
} while (pendingBlocks.Count > 0 && running);
}
if (!sleep && Node.blockChain.getLastBlockNum() >= syncToBlock)
{
if (verifyLastBlock())
{
resetWatchDog(0);
sleep = false;
}
else
{
handleWatchDog(true);
sleep = true;
}
}
if (sleep)
{
Thread.Sleep(500);
}
}
public static void onBotAction(byte[] action_data, RemoteEndpoint endpoint, int channel = 0)
{
SpixiBotAction sba = new SpixiBotAction(action_data);
switch (sba.action)
{
case SpixiBotActionCode.getChannels:
sendChannels(endpoint);
break;
case SpixiBotActionCode.getInfo:
Node.users.setPubKey(endpoint.presence.wallet, endpoint.serverPubKey, false);
sendInfo(endpoint.presence.wallet);
break;
case SpixiBotActionCode.getUsers:
sendUsers(endpoint);
break;
case SpixiBotActionCode.getUser:
sendUser(endpoint.presence.wallet, Node.users.getUser(sba.data));
break;
case SpixiBotActionCode.payment:
StreamTransaction stream_tx = new StreamTransaction(sba.data);
if (!stream_tx.transaction.toList.Keys.First().SequenceEqual(IxianHandler.getWalletStorage().getPrimaryAddress()))
{
Logging.warn("Received transaction txid " + stream_tx.transaction.id + " from " + Base58Check.Base58CheckEncoding.EncodePlain(endpoint.presence.wallet) + " that's not for this node.");
return;
}
StreamMessage sm = pendingMessages.Find(x => x.id.SequenceEqual(stream_tx.messageID));
if (sm == null)
{
// TODO TODO TODO send get message request to the client
Logging.warn("Received transaction txid " + stream_tx.transaction.id + " from " + Base58Check.Base58CheckEncoding.EncodePlain(endpoint.presence.wallet) + " but have no message for this transaction.");
return;
}
IxiNumber price = getMessagePrice(sm.sender, sm.data.Length);
if (stream_tx.transaction.amount < price)
{
Logging.warn("Received transaction txid " + stream_tx.transaction.id + " from " + Base58Check.Base58CheckEncoding.EncodePlain(endpoint.presence.wallet) + " that has lower than expected amount.");
return;
}
CoreProtocolMessage.broadcastProtocolMessage(new char[] { 'M', 'H' }, ProtocolMessageCode.transactionData, stream_tx.transaction.getBytes(), null);
CoreProtocolMessage.broadcastGetTransaction(stream_tx.transaction.id, 0, null, false);
PendingTransactions.addPendingLocalTransaction(stream_tx.transaction, stream_tx.messageID);
break;
case SpixiBotActionCode.enableNotifications:
bool send_notifications = false;
if (sba.data[0] == 1)
{
send_notifications = true;
}
Node.users.getUser(endpoint.presence.wallet).sendNotification = send_notifications;
Node.users.writeContactsToFile();
break;
}
}
private void rollForward()
{
bool sleep = false;
ulong lowestBlockNum = getLowestBlockNum();
ulong syncToBlock = syncTargetBlockNum;
if (Node.blockChain.Count > 5)
{
lock (pendingBlocks)
{
pendingBlocks.RemoveAll(x => x.blockNum < Node.blockChain.getLastBlockNum() - 5);
}
}
lock (pendingBlocks)
{
// Loop until we have no more pending blocks
do
{
ulong next_to_apply = lowestBlockNum;
if (Node.blockChain.Count > 0)
{
next_to_apply = Node.blockChain.getLastBlockNum() + 1;
}
if (next_to_apply > syncToBlock)
{
// we have everything, clear pending blocks and break
pendingBlocks.Clear();
lock (requestedBlockTimes)
{
requestedBlockTimes.Clear();
}
break;
}
Block b = pendingBlocks.Find(x => x.blockNum == next_to_apply);
if (b == null)
{
lock (requestedBlockTimes)
{
if (requestBlockAgain(next_to_apply))
{
// the node isn't connected yet, wait a while
sleep = true;
}
}
break;
}
b = new Block(b);
if (Node.blockChain.Count == 0 && b.blockNum > 1)
{
Block tmp_b = Node.blockChain.getBlock(b.blockNum - 1, true, true);
if (tmp_b != null)
{
Node.blockChain.setLastBlockVersion(tmp_b.version);
}
else
{
Node.blockChain.setLastBlockVersion(b.version);
}
}
if (b.version > Block.maxVersion)
{
Logging.error("Received block {0} with a version higher than this node can handle, discarding the block.", b.blockNum);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
Node.blockProcessor.networkUpgraded = true;
sleep = true;
break;
}
else
{
Node.blockProcessor.networkUpgraded = false;
}
if (next_to_apply > 5)
{
ulong targetBlock = next_to_apply - 5;
Block tb = pendingBlocks.Find(x => x.blockNum == targetBlock);
if (tb != null)
{
Block local_block = Node.blockChain.getBlock(tb.blockNum);
if (local_block != null && tb.blockChecksum.SequenceEqual(local_block.blockChecksum) && Node.blockProcessor.verifyBlockBasic(tb) == BlockVerifyStatus.Valid)
{
if (Node.blockProcessor.verifyBlockSignatures(tb, null))
{
Node.blockChain.refreshSignatures(tb, true);
}
else
{
Logging.warn("Target block " + tb.blockNum + " does not have the required consensus.");
}
}
pendingBlocks.RemoveAll(x => x.blockNum == tb.blockNum);
}
}
try
{
Logging.info("Sync: Applying block #{0}/{1}.",
b.blockNum, syncToBlock);
bool ignoreWalletState = true;
if (b.blockNum > wsSyncConfirmedBlockNum || Config.fullStorageDataVerification)
{
ignoreWalletState = false;
}
b.powField = null;
// wallet state is correct as of wsConfirmedBlockNumber, so before that we call
// verify with a parameter to ignore WS tests, but do all the others
BlockVerifyStatus b_status = BlockVerifyStatus.Valid;
if (b.fromLocalStorage)
{
// TODO TODO improve this section with NodeStorage.getTransactionsInBlock once rocksdb switch happens
bool missing = false;
foreach (byte[] txid in b.transactions)
{
if (!running)
{
break;
}
Transaction t = TransactionPool.getUnappliedTransaction(txid);
if (t == null)
{
t = Node.storage.getTransaction(txid, b.blockNum);
if (t != null)
{
t.applied = 0;
TransactionPool.addTransaction(t, true, null, Config.fullStorageDataVerification);
}
else
{
CoreProtocolMessage.broadcastGetTransaction(txid, b.blockNum);
missing = true;
}
}
}
if (missing)
{
Logging.info("Requesting missing transactions for block {0}", b.blockNum);
Thread.Sleep(100);
break;
}
}
if (b.blockNum > wsSyncConfirmedBlockNum || b.fromLocalStorage == false || Config.fullStorageDataVerification)
{
b_status = Node.blockProcessor.verifyBlock(b, ignoreWalletState);
}
else
{
b_status = Node.blockProcessor.verifyBlockBasic(b, false);
}
if (b_status == BlockVerifyStatus.Indeterminate)
{
if (lastProcessedBlockNum < b.blockNum)
{
lastProcessedBlockNum = b.blockNum;
lastProcessedBlockTime = Clock.getTimestamp();
}
if (Clock.getTimestamp() - lastProcessedBlockTime > ConsensusConfig.blockGenerationInterval * 2)
{
Logging.info("Sync: Discarding indeterminate block #{0}, due to timeout...", b.blockNum);
Node.blockProcessor.blacklistBlock(b);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
}
else
{
Logging.info("Sync: Waiting for missing transactions from block #{0}...", b.blockNum);
}
Thread.Sleep(100);
return;
}
if (b_status != BlockVerifyStatus.Valid)
{
Logging.warn("Block #{0} {1} is invalid. Discarding and requesting a new one.", b.blockNum, Crypto.hashToString(b.blockChecksum));
Node.blockProcessor.blacklistBlock(b);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
if (b_status == BlockVerifyStatus.PotentiallyForkedBlock && b.blockNum + 7 > lastBlockToReadFromStorage)
{
Node.blockProcessor.handleForkedFlag();
}
return;
}
if (!b.fromLocalStorage && !Node.blockProcessor.verifyBlockSignatures(b, null) && Node.blockChain.Count > 16)
{
Logging.warn("Block #{0} {1} doesn't have the required consensus. Discarding and requesting a new one.", b.blockNum, Crypto.hashToString(b.blockChecksum));
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
bool sigFreezeCheck = Node.blockProcessor.verifySignatureFreezeChecksum(b, null);
// Apply transactions when rolling forward from a recover file without a synced WS
if (b.blockNum > wsSyncConfirmedBlockNum)
{
if (Node.blockChain.Count <= 5 || sigFreezeCheck)
{
Node.walletState.beginTransaction(b.blockNum, false);
bool applied = false;
try
{
applied = Node.blockProcessor.applyAcceptedBlock(b);
if (applied)
{
Node.walletState.commitTransaction(b.blockNum);
}
}catch (Exception e)
{
Logging.error("Error occured during block sync, while applying/commiting transactions: " + e);
}
if (!applied)
{
Logging.warn("Error applying Block #{0} {1}. Reverting, discarding and requesting a new one.", b.blockNum, Crypto.hashToString(b.blockChecksum));
Node.walletState.revertTransaction(b.blockNum);
Node.blockChain.revertBlockTransactions(b);
Node.blockProcessor.blacklistBlock(b);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
else
{
if (b.version >= BlockVer.v5 && b.lastSuperBlockChecksum == null)
{
// skip WS checksum check
}
else
{
if (b.lastSuperBlockChecksum != null)
{
byte[] wsChecksum = Node.walletState.calculateWalletStateChecksum();
if (wsChecksum == null || !wsChecksum.SequenceEqual(b.walletStateChecksum))
{
Logging.error("After applying block #{0}, walletStateChecksum is incorrect!. Block's WS: {1}, actual WS: {2}", b.blockNum, Crypto.hashToString(b.walletStateChecksum), Crypto.hashToString(wsChecksum));
Node.walletState.revertTransaction(b.blockNum);
Node.blockChain.revertBlockTransactions(b);
Node.blockProcessor.blacklistBlock(b);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
}
}
if (b.blockNum % Config.saveWalletStateEveryBlock == 0)
{
DLT.Meta.WalletStateStorage.saveWalletState(b.blockNum);
}
}
}
}
else
{
if (syncToBlock == b.blockNum)
{
if (b.version >= BlockVer.v5 && b.lastSuperBlockChecksum == null)
{
// skip WS checksum check
}
else
{
byte[] wsChecksum = Node.walletState.calculateWalletStateChecksum();
if (wsChecksum == null || !wsChecksum.SequenceEqual(b.walletStateChecksum))
{
Logging.warn("Block #{0} is last and has an invalid WSChecksum. Discarding and requesting a new one.", b.blockNum);
Node.blockProcessor.blacklistBlock(b);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
}
}
}
if (Node.blockChain.Count <= 5 || sigFreezeCheck)
{
//Logging.info(String.Format("Appending block #{0} to blockChain.", b.blockNum));
if (b.blockNum <= wsSyncConfirmedBlockNum)
{
if (!TransactionPool.setAppliedFlagToTransactionsFromBlock(b))
{
Node.blockChain.revertBlockTransactions(b);
Node.blockProcessor.blacklistBlock(b);
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
}
if (b.blockNum > 12 && b.blockNum + 5 >= IxianHandler.getHighestKnownNetworkBlockHeight())
{
if (Node.isMasterNode() && b.blockNum > 7)
{
byte[][] signature_data = b.applySignature(); // applySignature() will return signature_data, if signature was applied and null, if signature was already present from before
if (signature_data != null)
{
Node.inventoryCache.setProcessedFlag(InventoryItemTypes.blockSignature, InventoryItemSignature.getHash(signature_data[1], b.blockChecksum), true);
// ProtocolMessage.broadcastNewBlock(localNewBlock);
SignatureProtocolMessages.broadcastBlockSignature(signature_data[0], signature_data[1], b.blockNum, b.blockChecksum, null, null);
}
}
}
Node.blockChain.appendBlock(b, !b.fromLocalStorage);
}
else if (Node.blockChain.Count > 5 && !sigFreezeCheck)
{
if (CoreConfig.preventNetworkOperations || Config.recoverFromFile)
{
var last_block = lastBlocks.Find(x => x.blockNum == b.blockNum - 5);
if (last_block != null)
{
pendingBlocks.Add(last_block);
}
return;
}
// invalid sigfreeze, waiting for the correct block
Logging.warn("Block #{0} {1} doesn't have the correct sigfreezed block. Discarding and requesting a new one.", b.blockNum, Crypto.hashToString(b.blockChecksum));
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
requestBlockAgain(b.blockNum);
return;
}
}
catch (Exception e)
{
Logging.error("Exception occured while syncing block #{0}: {1}", b.blockNum, e);
}
if (Config.enableChainReorgTest)
{
if (!Node.blockProcessor.chainReorgTest(b.blockNum))
{
pendingBlocks.RemoveAll(x => x.blockNum + 6 < b.blockNum);
}
}
else
{
pendingBlocks.RemoveAll(x => x.blockNum == b.blockNum);
}
Node.blockProcessor.cleanupBlockBlacklist();
} while (pendingBlocks.Count > 0 && running);
}
if (!sleep && Node.blockChain.getLastBlockNum() >= syncToBlock)
{
if (verifyLastBlock())
{
sleep = false;
}
else
{
sleep = true;
}
}
if (sleep)
{
Thread.Sleep(500);
}
}