static public void stop()
{
if (!running)
{
return;
}
running = false;
customAppManager.stop();
// Stop TIV
tiv.stop();
// Stop the transfer manager
TransferManager.stop();
// Stop the keepalive thread
PresenceList.stopKeepAlive();
// Stop the loop timer
if (mainLoopTimer != null)
{
mainLoopTimer.Stop();
mainLoopTimer = null;
}
// Stop the network queue
NetworkQueue.stop();
NetworkClientManager.stop();
StreamClientManager.stop();
// Stop the stream processor
StreamProcessor.uninitialize();
}
static public void connectToNetwork()
{
// Start the network client manager
NetworkClientManager.start(2);
// Start the s2 client manager
StreamClientManager.start();
}
static public void stop()
{
// Stop the keepalive thread
PresenceList.stopKeepAlive();
// Stop the loop timer
mainLoopTimer.Stop();
// Stop the network queue
NetworkQueue.stop();
NetworkClientManager.stop();
StreamClientManager.stop();
// Stop the stream processor
StreamProcessor.uninitialize();
}
static public void stop()
{
if (!running)
{
Logging.stop();
IxianHandler.status = NodeStatus.stopped;
return;
}
Logging.info("Stopping node...");
running = false;
// Stop the stream processor
StreamProcessor.uninitialize();
localStorage.stop();
customAppManager.stop();
// Stop TIV
tiv.stop();
// Stop the transfer manager
TransferManager.stop();
// Stop the keepalive thread
PresenceList.stopKeepAlive();
// Stop the network queue
NetworkQueue.stop();
NetworkClientManager.stop();
StreamClientManager.stop();
UpdateVerify.stop();
IxianHandler.status = NodeStatus.stopped;
Logging.info("Node stopped");
Logging.stop();
}
private bool sendMessage(Friend friend, PendingMessage pending_message, bool add_to_pending_messages = true)
{
StreamMessage msg = pending_message.streamMessage;
bool send_to_server = pending_message.sendToServer;
bool send_push_notification = pending_message.sendPushNotification;
// TODO this function has to be improved and node's wallet address has to be added
if (friend.publicKey != null || (msg.encryptionType != StreamMessageEncryptionCode.rsa && friend.aesKey != null && friend.chachaKey != null))
{
if (msg.encryptionType == StreamMessageEncryptionCode.none)
{
if (friend.aesKey != null && friend.chachaKey != null)
{
// upgrade encryption type
msg.encryptionType = StreamMessageEncryptionCode.spixi1;
}
else if (!friend.bot)
{
// upgrade encryption type
msg.encryptionType = StreamMessageEncryptionCode.rsa;
}
}
if (msg.encryptionType != StreamMessageEncryptionCode.none)
{
if (msg.version == 0 && msg.encryptionType == StreamMessageEncryptionCode.rsa && !msg.encrypted)
{
msg.sign(IxianHandler.getWalletStorage().getPrimaryPrivateKey());
}
if (!msg.encrypt(friend.publicKey, friend.aesKey, friend.chachaKey))
{
Logging.warn("Could not encrypt message for {0}!", Base58Check.Base58CheckEncoding.EncodePlain(msg.recipient));
return(false);
}
if (msg.version > 0 && msg.encryptionType == StreamMessageEncryptionCode.rsa)
{
msg.sign(IxianHandler.getWalletStorage().getPrimaryPrivateKey());
}
}
}
else if (msg.encryptionType != StreamMessageEncryptionCode.none)
{
if (friend.publicKey == null)
{
byte[] pub_k = FriendList.findContactPubkey(friend.walletAddress);
friend.setPublicKey(pub_k);
}
if (!friend.bot)
{
Logging.warn("Could not send message to {0}, due to missing encryption keys!", Base58Check.Base58CheckEncoding.EncodePlain(msg.recipient));
// Return true in case it has other messages in the queue that need to be processed and aren't encrypted
return(true);
}
else
{
// TODO TODO TODO perhaps it would be better to discard such message and notify the user
Logging.warn("Tried sending encrypted message of type {0} without encryption keys to {1}, which is a bot, changing message encryption type to none!", msg.type, Base58Check.Base58CheckEncoding.EncodePlain(msg.recipient));
msg.encryptionType = StreamMessageEncryptionCode.none;
}
}
bool sent = false;
string hostname = friend.searchForRelay(); // TODO cuckoo filter should be used instead, need to check the performance when PL is big
if (friend.online)
{
if (hostname != "" && hostname != null)
{
StreamClientManager.connectTo(hostname, null); // TODO replace null with node address
sent = StreamClientManager.sendToClient(hostname, ProtocolMessageCode.s2data, msg.getBytes(), msg.id);
if (sent && pending_message.removeAfterSending)
{
removeMessage(friend, pending_message.streamMessage.id);
}
}
}
if (friend.forcePush || !friend.online || !sent)
{
if (send_to_server)
{
send_to_server = Config.enablePushNotifications;
if (friend.bot)
{
send_to_server = false;
send_push_notification = false;
}
}
if (send_to_server)
{
if (OfflinePushMessages.sendPushMessage(msg, send_push_notification))
{
pending_message.sendToServer = false;
if (add_to_pending_messages)
{
pending_message.save(storagePath);
}
PendingMessageHeader tmp_msg_header = getPendingMessageHeader(friend, pending_message.streamMessage.id);
if (tmp_msg_header != null)
{
tmp_msg_header.sendToServer = false;
}
if (pending_message.removeAfterSending)
{
removeMessage(friend, pending_message.streamMessage.id);
}
return(true);
}
}
return(false);
}
return(true);
/* string pub_k = FriendList.findContactPubkey(msg.recipientAddress);
* if (pub_k.Length < 1)
* {
* Console.WriteLine("Contact {0} not found, adding to offline queue!", msg.recipientAddress);
* addOfflineMessage(msg);
* return;
* }
*
*
* // Create a new IXIAN transaction
* // byte[] checksum = Crypto.sha256(encrypted_message);
* Transaction transaction = new Transaction(0, msg.recipientAddress, Node.walletStorage.address);
* // transaction.data = Encoding.UTF8.GetString(checksum);
* msg.transactionID = transaction.id;
* //ProtocolMessage.broadcastProtocolMessage(ProtocolMessageCode.newTransaction, transaction.getBytes());
*
* // Add message to the queue
* messages.Add(msg);
*
* // Request a new keypair from the S2 Node
* if(hostname == null)
* ProtocolMessage.broadcastProtocolMessage(ProtocolMessageCode.s2generateKeys, Encoding.UTF8.GetBytes(msg.getID()));
* else
* {
* NetworkClientManager.sendData(ProtocolMessageCode.s2generateKeys, Encoding.UTF8.GetBytes(msg.getID()), hostname);
* }*/
}
// Unified protocol message parsing
public static void parseProtocolMessage(ProtocolMessageCode code, byte[] data, RemoteEndpoint endpoint)
{
if (endpoint == null)
{
Logging.error("Endpoint was null. parseProtocolMessage");
return;
}
try
{
switch (code)
{
case ProtocolMessageCode.hello:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
CoreProtocolMessage.processHelloMessageV6(endpoint, reader);
}
}
}
break;
case ProtocolMessageCode.helloData:
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
if (!CoreProtocolMessage.processHelloMessageV6(endpoint, reader))
{
return;
}
ulong last_block_num = reader.ReadIxiVarUInt();
int bcLen = (int)reader.ReadIxiVarUInt();
byte[] block_checksum = reader.ReadBytes(bcLen);
endpoint.blockHeight = last_block_num;
int block_version = (int)reader.ReadIxiVarUInt();
if (endpoint.presenceAddress.type != 'C')
{
ulong highest_block_height = IxianHandler.getHighestKnownNetworkBlockHeight();
if (last_block_num + 10 < highest_block_height)
{
CoreProtocolMessage.sendBye(endpoint, ProtocolByeCode.tooFarBehind, string.Format("Your node is too far behind, your block height is {0}, highest network block height is {1}.", last_block_num, highest_block_height), highest_block_height.ToString(), true);
return;
}
}
// Process the hello data
endpoint.helloReceived = true;
NetworkClientManager.recalculateLocalTimeDifference();
if (endpoint.presenceAddress.type == 'R')
{
string[] connected_servers = StreamClientManager.getConnectedClients(true);
if (connected_servers.Count() == 1 || !connected_servers.Contains(StreamClientManager.primaryS2Address))
{
if (StreamClientManager.primaryS2Address == "")
{
FriendList.requestAllFriendsPresences();
}
// TODO set the primary s2 host more efficiently, perhaps allow for multiple s2 primary hosts
StreamClientManager.primaryS2Address = endpoint.getFullAddress(true);
// TODO TODO do not set if directly connectable
IxianHandler.publicIP = endpoint.address;
IxianHandler.publicPort = endpoint.incomingPort;
PresenceList.forceSendKeepAlive = true;
Logging.info("Forcing KA from networkprotocol");
}
}
else if (endpoint.presenceAddress.type == 'C')
{
Friend f = FriendList.getFriend(endpoint.presence.wallet);
if (f != null && f.bot)
{
StreamProcessor.sendGetBotInfo(f);
}
}
if (endpoint.presenceAddress.type == 'M' || endpoint.presenceAddress.type == 'H')
{
Node.setNetworkBlock(last_block_num, block_checksum, block_version);
// Get random presences
endpoint.sendData(ProtocolMessageCode.getRandomPresences, new byte[1] {
(byte)'R'
});
endpoint.sendData(ProtocolMessageCode.getRandomPresences, new byte[1] {
(byte)'M'
});
endpoint.sendData(ProtocolMessageCode.getRandomPresences, new byte[1] {
(byte)'H'
});
subscribeToEvents(endpoint);
}
}
}
break;
case ProtocolMessageCode.s2data:
{
StreamProcessor.receiveData(data, endpoint);
}
break;
case ProtocolMessageCode.updatePresence:
{
Logging.info("NET: Receiving presence list update");
// Parse the data and update entries in the presence list
Presence p = PresenceList.updateFromBytes(data);
if (p == null)
{
return;
}
Friend f = FriendList.getFriend(p.wallet);
if (f != null)
{
f.relayIP = p.addresses[0].address;
}
}
break;
case ProtocolMessageCode.keepAlivePresence:
{
byte[] address = null;
long last_seen = 0;
byte[] device_id = null;
bool updated = PresenceList.receiveKeepAlive(data, out address, out last_seen, out device_id, endpoint);
Presence p = PresenceList.getPresenceByAddress(address);
if (p == null)
{
return;
}
Friend f = FriendList.getFriend(p.wallet);
if (f != null)
{
f.relayIP = p.addresses[0].address;
}
}
break;
case ProtocolMessageCode.getPresence:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int walletLen = reader.ReadInt32();
byte[] wallet = reader.ReadBytes(walletLen);
Presence p = PresenceList.getPresenceByAddress(wallet);
if (p != null)
{
lock (p)
{
byte[][] presence_chunks = p.getByteChunks();
foreach (byte[] presence_chunk in presence_chunks)
{
endpoint.sendData(ProtocolMessageCode.updatePresence, presence_chunk, null);
}
}
}
else
{
// TODO blacklisting point
Logging.warn(string.Format("Node has requested presence information about {0} that is not in our PL.", Base58Check.Base58CheckEncoding.EncodePlain(wallet)));
}
}
}
}
break;
case ProtocolMessageCode.getPresence2:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int walletLen = (int)reader.ReadIxiVarUInt();
byte[] wallet = reader.ReadBytes(walletLen);
Presence p = PresenceList.getPresenceByAddress(wallet);
if (p != null)
{
lock (p)
{
byte[][] presence_chunks = p.getByteChunks();
foreach (byte[] presence_chunk in presence_chunks)
{
endpoint.sendData(ProtocolMessageCode.updatePresence, presence_chunk, null);
}
}
}
else
{
// TODO blacklisting point
Logging.warn(string.Format("Node has requested presence information about {0} that is not in our PL.", Base58Check.Base58CheckEncoding.EncodePlain(wallet)));
}
}
}
}
break;
case ProtocolMessageCode.balance:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int address_length = reader.ReadInt32();
byte[] address = reader.ReadBytes(address_length);
// Retrieve the latest balance
IxiNumber balance = reader.ReadString();
if (address.SequenceEqual(Node.walletStorage.getPrimaryAddress()))
{
// Retrieve the blockheight for the balance
ulong block_height = reader.ReadUInt64();
if (block_height > Node.balance.blockHeight && (Node.balance.balance != balance || Node.balance.blockHeight == 0))
{
byte[] block_checksum = reader.ReadBytes(reader.ReadInt32());
Node.balance.address = address;
Node.balance.balance = balance;
Node.balance.blockHeight = block_height;
Node.balance.blockChecksum = block_checksum;
Node.balance.verified = false;
}
Node.balance.lastUpdate = Clock.getTimestamp();
}
}
}
}
break;
case ProtocolMessageCode.balance2:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int address_length = (int)reader.ReadIxiVarUInt();
byte[] address = reader.ReadBytes(address_length);
// Retrieve the latest balance
IxiNumber balance = new IxiNumber(new BigInteger(reader.ReadBytes((int)reader.ReadIxiVarUInt())));
if (address.SequenceEqual(Node.walletStorage.getPrimaryAddress()))
{
// Retrieve the blockheight for the balance
ulong block_height = reader.ReadIxiVarUInt();
if (block_height > Node.balance.blockHeight && (Node.balance.balance != balance || Node.balance.blockHeight == 0))
{
byte[] block_checksum = reader.ReadBytes((int)reader.ReadIxiVarUInt());
Node.balance.address = address;
Node.balance.balance = balance;
Node.balance.blockHeight = block_height;
Node.balance.blockChecksum = block_checksum;
Node.balance.verified = false;
}
Node.balance.lastUpdate = Clock.getTimestamp();
}
}
}
}
break;
case ProtocolMessageCode.newTransaction:
case ProtocolMessageCode.transactionData:
{
// TODO: check for errors/exceptions
Transaction transaction = new Transaction(data, true);
if (endpoint.presenceAddress.type == 'M' || endpoint.presenceAddress.type == 'H')
{
PendingTransactions.increaseReceivedCount(transaction.id, endpoint.presence.wallet);
}
TransactionCache.addUnconfirmedTransaction(transaction);
Node.tiv.receivedNewTransaction(transaction);
}
break;
case ProtocolMessageCode.bye:
CoreProtocolMessage.processBye(data, endpoint);
break;
case ProtocolMessageCode.blockHeaders2:
{
// Forward the block headers to the TIV handler
Node.tiv.receivedBlockHeaders2(data, endpoint);
}
break;
case ProtocolMessageCode.pitData2:
{
Node.tiv.receivedPIT2(data, endpoint);
}
break;
default:
break;
}
}
catch (Exception e)
{
Logging.error("Error parsing network message. Details: {0}", e.ToString());
}
}
// Unified protocol message parsing
public static void parseProtocolMessage(ProtocolMessageCode code, byte[] data, RemoteEndpoint endpoint)
{
if (endpoint == null)
{
Logging.error("Endpoint was null. parseProtocolMessage");
return;
}
try
{
switch (code)
{
case ProtocolMessageCode.hello:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
if (CoreProtocolMessage.processHelloMessage(endpoint, reader))
{
byte[] challenge_response = null;
int challenge_len = reader.ReadInt32();
byte[] challenge = reader.ReadBytes(challenge_len);
challenge_response = CryptoManager.lib.getSignature(challenge, IxianHandler.getWalletStorage().getPrimaryPrivateKey());
CoreProtocolMessage.sendHelloMessage(endpoint, true, challenge_response);
endpoint.helloReceived = true;
return;
}
}
}
}
break;
case ProtocolMessageCode.helloData:
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
if (!CoreProtocolMessage.processHelloMessage(endpoint, reader))
{
return;
}
ulong last_block_num = reader.ReadUInt64();
int bcLen = reader.ReadInt32();
byte[] block_checksum = reader.ReadBytes(bcLen);
int wsLen = reader.ReadInt32();
byte[] walletstate_checksum = reader.ReadBytes(wsLen);
int consensus = reader.ReadInt32(); // deprecated
endpoint.blockHeight = last_block_num;
int block_version = reader.ReadInt32();
Node.setLastBlock(last_block_num, block_checksum, walletstate_checksum, block_version);
// Check for legacy level
ulong legacy_level = reader.ReadUInt64(); // deprecated
int challenge_response_len = reader.ReadInt32();
byte[] challenge_response = reader.ReadBytes(challenge_response_len);
if (!CryptoManager.lib.verifySignature(endpoint.challenge, endpoint.serverPubKey, challenge_response))
{
CoreProtocolMessage.sendBye(endpoint, ProtocolByeCode.authFailed, string.Format("Invalid challenge response."), "", true);
return;
}
ulong highest_block_height = IxianHandler.getHighestKnownNetworkBlockHeight();
if (last_block_num + 10 < highest_block_height)
{
CoreProtocolMessage.sendBye(endpoint, ProtocolByeCode.tooFarBehind, string.Format("Your node is too far behind, your block height is {0}, highest network block height is {1}.", last_block_num, highest_block_height), highest_block_height.ToString(), true);
return;
}
// Process the hello data
endpoint.helloReceived = true;
NetworkClientManager.recalculateLocalTimeDifference();
if (endpoint.presenceAddress.type == 'R')
{
string[] connected_servers = StreamClientManager.getConnectedClients(true);
if (connected_servers.Count() == 1 || !connected_servers.Contains(StreamClientManager.primaryS2Address))
{
if (StreamClientManager.primaryS2Address == "")
{
FriendList.requestAllFriendsPresences();
}
// TODO set the primary s2 host more efficiently, perhaps allow for multiple s2 primary hosts
StreamClientManager.primaryS2Address = endpoint.getFullAddress(true);
// TODO TODO do not set if directly connectable
IxianHandler.publicIP = endpoint.address;
IxianHandler.publicPort = endpoint.incomingPort;
PresenceList.forceSendKeepAlive = true;
Logging.info("Forcing KA from networkprotocol");
}
}
else if (endpoint.presenceAddress.type == 'C')
{
Friend f = FriendList.getFriend(endpoint.presence.wallet);
if (f != null && f.bot)
{
StreamProcessor.sendGetMessages(f);
}
}
if (endpoint.presenceAddress.type == 'M')
{
subscribeToEvents(endpoint);
}
}
}
break;
case ProtocolMessageCode.s2data:
{
StreamProcessor.receiveData(data, endpoint);
}
break;
case ProtocolMessageCode.updatePresence:
{
Logging.info("NET: Receiving presence list update");
// Parse the data and update entries in the presence list
Presence p = PresenceList.updateFromBytes(data);
}
break;
case ProtocolMessageCode.keepAlivePresence:
{
byte[] address = null;
bool updated = PresenceList.receiveKeepAlive(data, out address, endpoint);
}
break;
case ProtocolMessageCode.getPresence:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int walletLen = reader.ReadInt32();
byte[] wallet = reader.ReadBytes(walletLen);
Presence p = PresenceList.getPresenceByAddress(wallet);
if (p != null)
{
lock (p)
{
byte[][] presence_chunks = p.getByteChunks();
foreach (byte[] presence_chunk in presence_chunks)
{
endpoint.sendData(ProtocolMessageCode.updatePresence, presence_chunk, null);
}
}
}
else
{
// TODO blacklisting point
Logging.warn(string.Format("Node has requested presence information about {0} that is not in our PL.", Base58Check.Base58CheckEncoding.EncodePlain(wallet)));
}
}
}
}
break;
case ProtocolMessageCode.balance:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int address_length = reader.ReadInt32();
byte[] address = reader.ReadBytes(address_length);
// Retrieve the latest balance
IxiNumber balance = reader.ReadString();
if (address.SequenceEqual(IxianHandler.getWalletStorage().getPrimaryAddress()))
{
Node.balance = balance;
}
// Retrieve the blockheight for the balance
ulong blockheight = reader.ReadUInt64();
Node.blockHeight = blockheight;
}
}
}
break;
case ProtocolMessageCode.transactionData:
{
// TODO: check for errors/exceptions
Transaction transaction = new Transaction(data, true);
TransactionCache.addTransaction(transaction);
}
break;
case ProtocolMessageCode.newTransaction:
{
Transaction transaction = new Transaction(data, true);
TransactionCache.addTransaction(transaction);
}
break;
case ProtocolMessageCode.bye:
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
endpoint.stop();
bool byeV1 = false;
try
{
ProtocolByeCode byeCode = (ProtocolByeCode)reader.ReadInt32();
string byeMessage = reader.ReadString();
string byeData = reader.ReadString();
byeV1 = true;
switch (byeCode)
{
case ProtocolByeCode.bye: // all good
break;
case ProtocolByeCode.forked: // forked node disconnected
Logging.info(string.Format("Disconnected with message: {0} {1}", byeMessage, byeData));
break;
case ProtocolByeCode.deprecated: // deprecated node disconnected
Logging.info(string.Format("Disconnected with message: {0} {1}", byeMessage, byeData));
break;
case ProtocolByeCode.incorrectIp: // incorrect IP
if (IxiUtils.validateIPv4(byeData))
{
if (NetworkClientManager.getConnectedClients(true).Length < 2)
{
// TODO TODO do not set if not directly connectable
IxianHandler.publicIP = byeData;
Logging.info("Changed internal IP Address to " + byeData + ", reconnecting");
}
}
break;
case ProtocolByeCode.notConnectable: // not connectable from the internet
Logging.error("This node must be connectable from the internet, to connect to the network.");
Logging.error("Please setup uPNP and/or port forwarding on your router for port " + IxianHandler.publicPort + ".");
NetworkServer.connectable = false;
break;
default:
Logging.warn(string.Format("Disconnected with message: {0} {1}", byeMessage, byeData));
break;
}
}
catch (Exception)
{
}
if (byeV1)
{
return;
}
reader.BaseStream.Seek(0, SeekOrigin.Begin);
// Retrieve the message
string message = reader.ReadString();
if (message.Length > 0)
{
Logging.info(string.Format("Disconnected with message: {0}", message));
}
else
{
Logging.info("Disconnected");
}
}
}
}
break;
default:
break;
}
}
catch (Exception e)
{
Logging.error(string.Format("Error parsing network message. Details: {0}", e.ToString()));
}
if (waitingFor == code)
{
blocked = false;
}
}
