public static void handleGetKeepAlives(byte[] data, RemoteEndpoint endpoint)
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int ka_count = (int)reader.ReadIxiVarUInt();
int max_ka_per_chunk = CoreConfig.maximumKeepAlivesPerChunk;
for (int i = 0; i < ka_count;)
{
using (MemoryStream mOut = new MemoryStream(max_ka_per_chunk * 570))
{
using (BinaryWriter writer = new BinaryWriter(mOut))
{
int next_ka_count;
if (ka_count - i > max_ka_per_chunk)
{
next_ka_count = max_ka_per_chunk;
}
else
{
next_ka_count = ka_count - i;
}
writer.WriteIxiVarInt(next_ka_count);
for (int j = 0; j < next_ka_count && i < ka_count; j++)
{
i++;
long in_rollback_pos = reader.BaseStream.Position;
long out_rollback_len = mOut.Length;
if (m.Position == m.Length)
{
break;
}
int address_len = (int)reader.ReadIxiVarUInt();
byte[] address = reader.ReadBytes(address_len);
int device_len = (int)reader.ReadIxiVarUInt();
byte[] device = reader.ReadBytes(device_len);
Presence p = PresenceList.getPresenceByAddress(address);
if (p == null)
{
Logging.info("I don't have presence: " + Base58Check.Base58CheckEncoding.EncodePlain(address));
continue;
}
PresenceAddress pa = p.addresses.Find(x => x.device.SequenceEqual(device));
if (pa == null)
{
Logging.info("I don't have presence address: " + Base58Check.Base58CheckEncoding.EncodePlain(address));
continue;
}
byte[] ka_bytes = pa.getKeepAliveBytes(address);
byte[] ka_len = IxiVarInt.GetIxiVarIntBytes(ka_bytes.Length);
writer.Write(ka_len);
writer.Write(ka_bytes);
if (mOut.Length > CoreConfig.maxMessageSize)
{
reader.BaseStream.Position = in_rollback_pos;
mOut.SetLength(out_rollback_len);
i--;
break;
}
}
}
endpoint.sendData(ProtocolMessageCode.keepAlivesChunk, mOut.ToArray(), null);
}
}
}
}
}
public static void handleGetTransactions2(byte[] data, RemoteEndpoint endpoint)
{
using (MemoryStream m = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(m))
{
int msg_id = (int)reader.ReadIxiVarInt();
int tx_count = (int)reader.ReadIxiVarUInt();
int max_tx_per_chunk = CoreConfig.maximumTransactionsPerChunk;
if (tx_count > max_tx_per_chunk)
{
tx_count = max_tx_per_chunk;
}
for (int i = 0; i < tx_count;)
{
using (MemoryStream mOut = new MemoryStream(max_tx_per_chunk * 570))
{
using (BinaryWriter writer = new BinaryWriter(mOut))
{
int next_tx_count;
if (tx_count - i > max_tx_per_chunk)
{
next_tx_count = max_tx_per_chunk;
}
else
{
next_tx_count = tx_count - i;
}
writer.WriteIxiVarInt(msg_id);
writer.WriteIxiVarInt(next_tx_count);
for (int j = 0; j < next_tx_count && i < tx_count; j++)
{
long in_rollback_pos = reader.BaseStream.Position;
long out_rollback_len = mOut.Length;
i++;
if (m.Position == m.Length)
{
break;
}
int txid_len = (int)reader.ReadIxiVarUInt();
byte[] txid = reader.ReadBytes(txid_len);
Transaction tx = TransactionPool.getUnappliedTransaction(txid);
if (tx == null)
{
tx = TransactionPool.getAppliedTransaction(txid);
if (tx == null)
{
Logging.warn("I do not have txid '{0}.", Transaction.txIdV8ToLegacy(txid)); // convert to string
continue;
}
}
byte[] tx_bytes = tx.getBytes();
byte[] tx_len = IxiVarInt.GetIxiVarIntBytes(tx_bytes.Length);
writer.Write(tx_len);
writer.Write(tx_bytes);
if (mOut.Length > CoreConfig.maxMessageSize)
{
reader.BaseStream.Position = in_rollback_pos;
mOut.SetLength(out_rollback_len);
i--;
break;
}
}
}
endpoint.sendData(ProtocolMessageCode.transactionsChunk2, mOut.ToArray(), null, 0, MessagePriority.high);
}
}
}
}
}
/// <summary>
/// Prepares and sends an Ixian protocol 'Hello' message to the specified remote endpoint.
/// </summary>
/// <remarks>
/// A valid Ixian 'Hello' message includes certain Node data, verified by a public-key signature, which this function prepares using
/// the primary wallet's keypair. If this message is a reply to the other endpoint's hello message, then
/// </remarks>
/// <param name="endpoint">Remote endpoint to send the message to.</param>
/// <param name="sendHelloData">True if the message is the first hello sent to the remote node, false if it is a reply to the challenge.</param>
/// <param name="challenge_response">Response byte-field to the other node's hello challenge</param>
public static void sendHelloMessageV6(RemoteEndpoint endpoint, bool sendHelloData, int challenge)
{
using (MemoryStream m = new MemoryStream(1856))
{
using (BinaryWriter writer = new BinaryWriter(m))
{
string publicHostname = IxianHandler.getFullPublicAddress();
// Send the node version
writer.WriteIxiVarInt(6);
// Send the public node address
byte[] address = IxianHandler.getWalletStorage().getPrimaryAddress();
writer.WriteIxiVarInt(address.Length);
writer.Write(address);
// Send the testnet designator
writer.Write(IxianHandler.isTestNet);
char node_type = PresenceList.myPresenceType;
writer.Write(node_type);
// Send the version
writer.Write(CoreConfig.productVersion);
// Send the node device id
writer.WriteIxiVarInt(CoreConfig.device_id.Length);
writer.Write(CoreConfig.device_id);
// Send the wallet public key
writer.WriteIxiVarInt(IxianHandler.getWalletStorage().getPrimaryPublicKey().Length);
writer.Write(IxianHandler.getWalletStorage().getPrimaryPublicKey());
// Send listening port
writer.WriteIxiVarInt(IxianHandler.publicPort);
// Send timestamp
long timestamp = Clock.getTimestamp() + endpoint.calculateTimeDifference();
writer.WriteIxiVarInt(timestamp);
// generate signature
using (MemoryStream mSig = new MemoryStream(1024))
{
using (BinaryWriter sigWriter = new BinaryWriter(mSig))
{
sigWriter.Write(ConsensusConfig.ixianChecksumLock);
sigWriter.Write(CoreConfig.device_id);
sigWriter.Write(timestamp);
sigWriter.Write(publicHostname);
sigWriter.Write(challenge);
}
byte[] signature = CryptoManager.lib.getSignature(mSig.ToArray(), IxianHandler.getWalletStorage().getPrimaryPrivateKey());
writer.WriteIxiVarInt(signature.Length);
writer.Write(signature);
}
if (sendHelloData)
{
Block block = IxianHandler.getLastBlock();
if (block == null)
{
Logging.warn("Clients are connecting, but we have no blocks yet to send them!");
sendBye(endpoint, ProtocolByeCode.notReady, string.Format("The node isn't ready yet, please try again later."), "", true);
return;
}
writer.WriteIxiVarInt(block.blockNum);
writer.WriteIxiVarInt(block.blockChecksum.Length);
writer.Write(block.blockChecksum);
writer.WriteIxiVarInt(block.version);
writer.Write(endpoint.getFullAddress(true));
#if TRACE_MEMSTREAM_SIZES
Logging.info(String.Format("CoreProtocolMessage::sendHelloMessage: {0}", m.Length));
#endif
endpoint.sendData(ProtocolMessageCode.helloData, m.ToArray());
}
else
{
byte[] challenge_bytes = IxiVarInt.GetIxiVarIntBytes(challenge);
endpoint.challenge = BitConverter.GetBytes(challenge);
writer.Write(challenge_bytes);
#if TRACE_MEMSTREAM_SIZES
Logging.info(String.Format("CoreProtocolMessage::sendHelloMessage: {0}", m.Length));
#endif
endpoint.sendData(ProtocolMessageCode.hello, m.ToArray());
}
}
}
}
