/// <summary>
/// Serialize the current instance as a byte[] that can be sent over the network.
/// </summary>
/// <param name="writer"></param>
/// <param name="serializationType">
/// The serialization method used.
/// This value will be encoded in the output of this method,
/// so the SerializationType property of this instance may not match.
/// </param>
/// <returns></returns>
/// <exception cref="InvalidDataException"></exception>
private void Encode(BinaryWriter writer, TxSerializeType serializationType)
{
var serializedVersion = Version | ((uint)serializationType << 16);
writer.Write(serializedVersion);
switch (serializationType)
{
case TxSerializeType.NoWitness:
EncodePrefix(writer);
break;
case TxSerializeType.OnlyWitness:
EncodeWitness(writer);
break;
case TxSerializeType.WitnessSigning:
EncodeWitnessSigning(writer);
break;
case TxSerializeType.WitnessValueSigning:
EncodeWitnessValueSigning(writer);
break;
case TxSerializeType.Full:
EncodePrefix(writer);
EncodeWitness(writer);
break;
default:
throw new InvalidEnumArgumentException($"unrecognized serialization type {serializationType}");
}
}
/// <summary>
/// Calculates the BLAKE256 hash of the current instance. Witness data is not serialized.
/// </summary>
/// <returns>The hash as a byte[] with length 32</returns>
public byte[] GetHash(TxSerializeType serializationType = TxSerializeType.NoWitness)
{
byte[] bytes;
using (var ms = new MemoryStream())
using (var bw = new BinaryWriter(ms))
{
Encode(bw, serializationType);
bw.Flush();
bytes = ms.ToArray();
}
return(HashUtil.Blake256(bytes));
}
private TxIn ReadTxInPrefix(BinaryReader reader, TxSerializeType serializationType)
{
if (serializationType == TxSerializeType.OnlyWitness)
{
throw new WireException("tried to read a prefix input for a witness only tx");
}
var prevOutPoint = ReadOutPoint(reader);
var sequence = reader.ReadUInt32();
return(new TxIn
{
Sequence = sequence,
PreviousOutPoint = prevOutPoint
});
}