public void ReadWrite(BitcoinStream stream)
{
bool verifyChechksum = false;
if (stream.Serializing || (!stream.Serializing && !_SkipMagic))
{
stream.ReadWrite(ref magic);
}
stream.ReadWrite(ref command);
stream.ReadWrite(ref length);
if (stream.ProtocolVersion >= ProtocolVersion.MEMPOOL_GD_VERSION)
{
stream.ReadWrite(ref checksum);
verifyChechksum = true;
}
if (stream.Serializing)
{
stream.ReadWrite(ref payload);
}
else
{
NodeServerTrace.Trace.TraceEvent(TraceEventType.Verbose, 0, "Message type readen : " + Command);
if (length > 0x02000000) //MAX_SIZE 0x02000000 Serialize.h
{
throw new FormatException("Message payload too big ( > 0x02000000 bytes)");
}
payload = new byte[length];
stream.ReadWrite(ref payload);
if (verifyChechksum)
{
if (!VerifyChecksum())
{
NodeServerTrace.Trace.TraceEvent(TraceEventType.Verbose, 0, "Invalid message checksum bytes : "
+ Encoders.Hex.EncodeData(this.ToBytes()));
throw new FormatException("Message checksum invalid");
}
}
BitcoinStream payloadStream = new BitcoinStream(payload);
payloadStream.CopyParameters(stream);
var payloadType = PayloadAttribute.GetCommandType(Command);
if (payloadType == typeof(UnknowPayload))
{
NodeServerTrace.Trace.TraceEvent(TraceEventType.Warning, 0, "Unknown command received : " + Command);
}
payloadStream.ReadWrite(payloadType, ref _PayloadObject);
NodeServerTrace.Verbose("Payload : " + _PayloadObject);
}
}
public void ReadWrite(BitcoinStream stream)
{
if (Payload == null && stream.Serializing)
{
throw new InvalidOperationException("Payload not affected");
}
if (stream.Serializing || (!stream.Serializing && !_SkipMagic))
{
stream.ReadWrite(ref magic);
}
stream.ReadWrite(ref command);
int length = 0;
uint checksum = 0;
bool hasChecksum = false;
byte[] payloadBytes = stream.Serializing ? GetPayloadBytes(stream.ProtocolVersion, out length) : null;
length = payloadBytes == null ? 0 : length;
stream.ReadWrite(ref length);
if (stream.ProtocolVersion >= ProtocolVersion.MEMPOOL_GD_VERSION)
{
if (stream.Serializing)
{
checksum = Hashes.Hash256(payloadBytes, 0, length).GetLow32();
}
stream.ReadWrite(ref checksum);
hasChecksum = true;
}
if (stream.Serializing)
{
stream.ReadWrite(ref payloadBytes, 0, length);
}
else
{
if (length > 0x02000000) //MAX_SIZE 0x02000000 Serialize.h
{
throw new FormatException("Message payload too big ( > 0x02000000 bytes)");
}
payloadBytes = _Buffer == null || _Buffer.Length < length ? new byte[length] : _Buffer;
stream.ReadWrite(ref payloadBytes, 0, length);
if (hasChecksum)
{
if (!VerifyChecksum(checksum, payloadBytes, length))
{
if (NodeServerTrace.Trace.Switch.ShouldTrace(TraceEventType.Verbose))
{
NodeServerTrace.Trace.TraceEvent(TraceEventType.Verbose, 0, "Invalid message checksum bytes");
}
throw new FormatException("Message checksum invalid");
}
}
BitcoinStream payloadStream = new BitcoinStream(payloadBytes);
payloadStream.CopyParameters(stream);
var payloadType = PayloadAttribute.GetCommandType(Command);
var unknown = payloadType == typeof(UnknowPayload);
if (unknown)
{
NodeServerTrace.Trace.TraceEvent(TraceEventType.Warning, 0, "Unknown command received : " + Command);
}
object payload = _PayloadObject;
payloadStream.ReadWrite(payloadType, ref payload);
if (unknown)
{
((UnknowPayload)payload)._Command = Command;
}
Payload = (Payload)payload;
}
}
// We use this for big blocks, because the default array pool would allocate a new array. We do not need lot's of bucket such arrays are short lived.
//readonly static Lazy<ArrayPool<byte>> BigArrayPool = new Lazy<ArrayPool<byte>>(() => ArrayPool<byte>.Create(0x02000000, 5), false);
//ArrayPool<byte> GetArrayPool(int size) => size < 1_048_576 ? ArrayPool<byte>.Shared : BigArrayPool.Value;
public void ReadWrite(BitcoinStream stream)
{
if (Payload == null && stream.Serializing)
{
throw new InvalidOperationException("Payload not affected");
}
if (stream.Serializing || (!stream.Serializing && !_SkipMagic))
{
stream.ReadWrite(ref magic);
}
stream.ReadWrite(ref command);
if (stream.Serializing)
{
// We can optimize by calculating the length at the same time we calculate the checksum
if (stream.ProtocolCapabilities.SupportCheckSum)
{
var hashStream = stream.ProtocolCapabilities.GetChecksumHashStream();
var bsStream = new BitcoinStream(hashStream, true);
bsStream.CopyParameters(stream);
Payload.ReadWrite(bsStream);
var length = (int)bsStream.Counter.WrittenBytes;
var checksum = hashStream.GetHash().GetLow32();
stream.ReadWrite(ref length);
stream.ReadWrite(ref checksum);
}
else
{
var bitcoinStream = new BitcoinStream(Stream.Null, true);
bitcoinStream.CopyParameters(stream);
Payload.ReadWrite(bitcoinStream);
var length = (int)bitcoinStream.Counter.WrittenBytes;
stream.ReadWrite(ref length);
}
stream.ReadWrite(Payload);
}
else
{
int length = 0;
stream.ReadWrite(ref length);
if (length < 0 || length > 0x02000000) //MAX_SIZE 0x02000000 Serialize.h
{
throw new FormatException("Message payload too big ( > 0x02000000 bytes)");
}
//var arrayPool = GetArrayPool(length);
var payloadBytes = new byte[length]; // arrayPool.Rent(length);
try
{
uint expectedChecksum = 0;
if (stream.ProtocolCapabilities.SupportCheckSum)
{
stream.ReadWrite(ref expectedChecksum);
}
stream.ReadWrite(ref payloadBytes, 0, length);
// We do not verify the checksum anymore because for 1000 blocks, it takes 80 seconds.
BitcoinStream payloadStream = new BitcoinStream(new MemoryStream(payloadBytes, 0, length, false), false);
payloadStream.CopyParameters(stream);
var payloadType = PayloadAttribute.GetCommandType(Command);
var unknown = payloadType == typeof(UnknowPayload);
if (unknown)
{
Logs.NodeServer.LogWarning("Unknown command received {command}", Command);
}
IBitcoinSerializable payload = null;
if (!stream.ConsensusFactory.TryCreateNew(payloadType, out payload))
{
payload = (IBitcoinSerializable)Activator.CreateInstance(payloadType);
}
payload.ReadWrite(payloadStream);
if (unknown)
{
((UnknowPayload)payload)._Command = Command;
}
Payload = (Payload)payload;
}
finally
{
payloadBytes = null;
// arrayPool.Return(payloadBytes);
}
}
}