private Message MakeMessage(string command, byte[] payloadBytes, P2PNetworkParameters netParams)
{
// We use an if ladder rather than reflection because reflection can be slow on some platforms.
if (command.Equals("version"))
{
return(new VersionMessage(payloadBytes, netParams));
}
if (command.Equals("verack"))
{
return(new VersionAck(payloadBytes, netParams));
}
if (command.Equals("reject"))
{
return(new RejectMessage(payloadBytes, netParams));
}
if (command.Equals("ping"))
{
return(new Ping(payloadBytes, netParams));
}
if (command.Equals("pong"))
{
return(new Pong(payloadBytes, netParams));
}
if (command.Equals("inv"))
{
return(new InventoryMessage(payloadBytes, netParams));
}
if (command.Equals("addr"))
{
return(new AddressMessage(payloadBytes, netParams));
}
if (command.Equals("getaddr"))
{
return(new GetAddresses(payloadBytes, netParams));
}
if (command.Equals("block"))
{
return(new BlockMessage(payloadBytes, netParams));
} /*
* if (command.Equals("getdata"))
* {
* return new GetDataMessage(_params, payloadBytes);
* }
* if (command.Equals("tx"))
* {
* return new TransactionMessage(_params, payloadBytes);
* }
*/
throw new Exception("No support for deserializing message with name " + command);
}
public DatabaseConnection(P2PNetworkParameters netParams)
{
_networkParameters = netParams;
if (_networkParameters.IsTestNet)
{
_connectionString = @"Data Source = (localdb)\ProjectsV12; Initial Catalog = Blox.Net TestNet DB; Integrated Security = True; Connect Timeout = 30; Encrypt = False; TrustServerCertificate = False";
}
else
{
_connectionString = @"Data Source = (localdb)\ProjectsV12;Initial Catalog = Blox.NET DB; Integrated Security = True; Connect Timeout = 30; Encrypt=False;TrustServerCertificate=False";
}
_sqlConnectionObj = new SqlConnection(_connectionString);
}
public VersionMessage(IPAddress remoteIpAddress, ushort remotePort, Socket sock, uint newBestHeight, uint remoteClientVersion, P2PNetworkParameters netParams, ulong remoteServices = (ulong)P2PNetworkParameters.NODE_NETWORK.FULL_NODE) : base(netParams)
{
_localServices = P2PNetParameters.Services;
_time = P2PConnectionManager.GetUTCNowWithOffset();
_myAddr = new PeerAddress(IPAddress.Loopback, Convert.ToUInt16(((IPEndPoint)sock.LocalEndPoint).Port), netParams.Services, P2PNetParameters, true);
_theirAddr = new PeerAddress(remoteIpAddress, remotePort, remoteServices, P2PNetParameters, true);
_nonce = P2PNetworkParameters.VersionConnectNonce;
_userAgent = P2PNetworkParameters.UserAgentString;
_startBlockHeight = newBestHeight;
_relay = P2PNetParameters.Relay;
}
protected ListMessage(P2PNetworkParameters netParams) : base(netParams)
{
_items = new List <InventoryItem>();
}
// this is needed by the BitcoinSerializer
public VersionAck(byte[] payload, P2PNetworkParameters netParams) : base(payload, 0, true, netParams)
{
}
public Pong(ulong nonce, P2PNetworkParameters netParams) : base(netParams)
{
_nonce = nonce;
}
internal AddressMessage(List <PeerAddress> payloadAddresses, P2PNetworkParameters netParams) : base(netParams)
{
Addresses = payloadAddresses;
}
public InventoryMessage(P2PNetworkParameters netParams) : base(netParams)
{
}
/// <summary>
/// Deserializes an input message. This is usually part of a transaction message.
/// </summary>
/// <exception cref="BitCoinSharp.ProtocolException" />
public TransactionInput(TransactionMessage parentTransaction, byte[] payload, int offset, P2PNetworkParameters netParams) : base(payload, offset, true, netParams)
{
ParentTransaction = parentTransaction;
}
/// <summary>
/// Creates an UNSIGNED input that links to the given output
/// </summary>
internal TransactionInput(TransactionMessage parentTransaction, Byte[] outpointHash, uint outpointIndex, P2PNetworkParameters netParams) : base(netParams)
{
_outpointHash = outpointHash;
_outpointIndex = outpointIndex;
ScriptBytes = EmptyArray;
_sequence = uint.MaxValue;
ParentTransaction = parentTransaction;
}
/// <summary>
/// Used only in creation of the genesis block.
/// </summary>
internal TransactionInput(TransactionMessage parentTransaction, byte[] scriptBytes, P2PNetworkParameters netParams) : base(netParams)
{
ScriptBytes = scriptBytes;
_sequence = uint.MaxValue;
ParentTransaction = parentTransaction;
}
/// <summary>
/// Constructs a block object from the BitCoin wire format.
/// </summary>
/// <exception cref="ProtocolException"/>
public BlockMessage(byte[] payloadBytes, P2PNetworkParameters netParams) : base(payloadBytes, 0, true, netParams)
{
}
/// <summary>
/// Creates a transaction by reading payload starting from offset bytes in. Length of a transaction is fixed.
/// </summary>
/// <exception cref="ProtocolException"/>
public TransactionMessage(byte[] payload, int offset, P2PNetworkParameters netParams)
: base(payload, offset, true, netParams)
{
// inputs/outputs will be created in parse()
}
/// <summary>
/// Creates a transaction from the given serialized bytes, eg, from a block or a tx network message.
/// </summary>
/// <exception cref="ProtocolException"/>
public TransactionMessage(byte[] payloadBytes, P2PNetworkParameters netParams) : base(payloadBytes, 0, true, netParams)
{
}
public GetAddresses(P2PNetworkParameters netParams) : base(new byte[] { }, 0, true, netParams)
{
}
// this is needed by the BitcoinSerializer
public GetAddresses(byte[] payload, P2PNetworkParameters netParams) : base(payload, 0, true, netParams)
{
}
public NullMessage(P2PNetworkParameters netParams) : base(netParams)
{
}
public InventoryMessage(byte[] bytes, P2PNetworkParameters netParams) : base(bytes, netParams)
{
}
public Ping(P2PNetworkParameters netParams) : base(netParams)
{
_nonce = Convert.ToUInt64(DateTime.UtcNow.Ticks);
}
internal AddressMessage(byte[] payload, P2PNetworkParameters netParams) : base(payload, 0, true, netParams)
{
}
/// <summary>
/// Reads a message from the given InputStream and returns it.
/// </summary>
/// <exception cref="IOException"/>
public Message Deserialize(Stream @in, P2PNetworkParameters netParams)
{
// A BitCoin protocol message has the following format.
//
// - 4 byte magic number: 0xfabfb5da for the testnet or
// 0xf9beb4d9 for production
// - 12 byte command in ASCII
// - 4 byte payload size
// - 4 byte checksum
// - Payload data
//
// The checksum is the first 4 bytes of a SHA256 hash of the message payload. It isn't
// present for all messages, notably, the first one on a connection.
//
// Satoshi's implementation ignores garbage before the magic header bytes. We have to do the same because
// sometimes it sends us stuff that isn't part of any message.
SeekPastMagicBytes(@in, netParams.PacketMagic);
// Now read in the header.
var header = new byte[_commandLen + 8];
var readCursor = 0;
while (readCursor < header.Length)
{
var bytesRead = @in.Read(header, readCursor, header.Length - readCursor);
if (bytesRead == -1)
{
// There's no more data to read.
throw new IOException("Socket is disconnected");
}
readCursor += bytesRead;
}
var cursor = 0;
// The command is a NULL terminated string, unless the command fills all twelve bytes
// in which case the termination is implicit.
var mark = cursor;
for (; header[cursor] != 0 && cursor - mark < _commandLen; cursor++)
{
}
var commandBytes = new byte[cursor - mark];
Array.Copy(header, mark, commandBytes, 0, commandBytes.Length);
for (var i = 0; i < commandBytes.Length; i++)
{
// Emulate ASCII by replacing extended characters with question marks.
if (commandBytes[i] >= 0x80)
{
commandBytes[i] = 0x3F;
}
}
var command = Encoding.UTF8.GetString(commandBytes, 0, commandBytes.Length);
cursor = mark + _commandLen;
var size = Utilities.ReadUint32(header, cursor);
cursor += 4;
if (size > Message.MaxSize)
{
throw new Exception("Message size too large: " + size);
}
// Old clients don't send the checksum.
var checksum = new byte[4];
// Note that the size read above includes the checksum bytes.
Array.Copy(header, cursor, checksum, 0, 4);
// Now try to read the whole message.
readCursor = 0;
var payloadBytes = new byte[size];
while (readCursor < payloadBytes.Length - 1)
{
var bytesRead = @in.Read(payloadBytes, readCursor, (int)(size - readCursor));
if (bytesRead == -1)
{
throw new IOException("Socket is disconnected");
}
readCursor += bytesRead;
}
// Verify the checksum.
var hash = Utilities.DoubleDigest(payloadBytes);
if (checksum[0] != hash[0] || checksum[1] != hash[1] || checksum[2] != hash[2] || checksum[3] != hash[3])
{
throw new Exception("Checksum failed to verify, actual " + Utilities.BytesToHexString(hash) + " vs " + Utilities.BytesToHexString(checksum));
}
try
{
return(MakeMessage(command, payloadBytes, netParams));
}
catch (Exception e)
{
throw new Exception("Error deserializing message " + Utilities.BytesToHexString(payloadBytes) + Environment.NewLine + e.Message, e);
}
}
public Pong(byte[] payload, P2PNetworkParameters netParams) : base(payload, 0, true, netParams)
{
}
internal Message(P2PNetworkParameters netParams)
{
_networkParameters = netParams;
_packetMagic = _networkParameters.PacketMagic;
_protocolVersion = _networkParameters.ClientVersion;
}
/// <summary>
/// Construct a peer address from a serialized payload.
/// </summary>
public PeerAddress(byte[] payload, int offset, bool isInVersionMessage, P2PNetworkParameters netParams) : base(payload, offset, false, netParams)
{
_isInVersionMessage = isInVersionMessage;
Parse();
}
public VersionMessage(byte[] msg, P2PNetworkParameters netParams)
: base(msg, 0, true, netParams)
{
}
public VersionAck(P2PNetworkParameters netParams) : base(new byte[] { }, 0, true, netParams)
{
}
protected ListMessage(byte[] bytes, P2PNetworkParameters netParams) : base(bytes, 0, true, netParams)
{
}