/// <summary>
/// Decode - Decodes a raw bitcoin transaction
/// </summary>
private void Decode()
{
// tx version - uint32
TXVersion = ReadUInt();
// if the transaction has witness, next bytes will be 0001
if (ByteData[Offset] == 0 && ByteData[Offset + 1] == 1)
{
Offset += 2;
HasWitness = true;
}
// get the number of inputs - vin length
Inputs = new TXInput[ReadVarLenInt()];
// read all the inputs
for (var i = 0; i < Inputs.Length; ++i)
{
Inputs[i] = new TXInput
{
Hash = ReadSlice(32),
Index = ReadUInt(),
Script = ReadSlice(
(int)ReadVarLenInt()), // script length maximum is 520 bytes, so casting to int should be fine
Sequence = ReadUInt()
}
}
;
// get the number of inputs - vout length
Outputs = new TXOutput[ReadVarLenInt()];
// read all the outputs
for (var i = 0; i < Outputs.Length; ++i)
{
Outputs[i] = new TXOutput
{
Value = ReadUInt64(),
Script = ReadSlice(
(int)ReadVarLenInt()) // script length maximum is 520 bytes, so casting to int should be fine
}
}
;
// if this is a segwit transaction, read in the witnesses
if (HasWitness)
{
foreach (var input in Inputs)
{
input.Witness = ReadVector();
}
}
LockTime = ReadUInt();
// strict validation - we should be at the end of the transaction
LengthMatch = Offset == ByteData.Length;
}
}
}
/// <summary>
/// Decode - Decodes a raw bitcoin transaction
/// </summary>
private Transaction DecodeTX()
{
var origOffset = Offset;
// tx version - uint32
var txVersion = ReadUInt();
var hasWitness = false;
// if the transaction has witness, next bytes will be 0001
if (ByteData[Offset] == 0 && ByteData[Offset + 1] == 1)
{
Offset += 2;
hasWitness = true;
}
// get the number of inputs - vin length
var inputs = new TXInput[ReadVarLenInt()];
// read all the inputs
for (var i = 0; i < inputs.Length; ++i)
{
inputs[i] = new TXInput
{
Hash = ReadSlice(32),
Index = ReadUInt(),
Script = ReadSlice(
(int)ReadVarLenInt()), // script length maximum is 520 bytes, so casting to int should be fine
Sequence = ReadUInt()
}
}
;
// get the number of inputs - vout length
var outputs = new TXOutput[ReadVarLenInt()];
// read all the outputs
for (var i = 0; i < outputs.Length; ++i)
{
outputs[i] = new TXOutput
{
Value = ReadUInt64(),
Script = ReadSlice(
(int)ReadVarLenInt()) // script length maximum is 520 bytes, so casting to int should be fine
}
}
;
// if this is a segwit transaction, read in the witnesses
if (hasWitness)
{
foreach (var input in inputs)
{
input.Witness = ReadVector();
}
}
// transaction lock_time
var lockTime = ReadUInt();
// hash the entire transaction for the TXID
var txLength = Offset - origOffset;
Offset = origOffset;
var byteData = ReadSlice(txLength);
return(new Transaction(byteData, BlockHash, txVersion, hasWitness, inputs, outputs, lockTime)
{
FirstSeen = DateTimeOffset.UtcNow.ToUnixTimeSeconds(), LastUpdated = DateTimeOffset.UtcNow.ToUnixTimeSeconds()
});
}
}
}
