public static TransactionIn Parse(byte[] buffer, ref int index)
{
var res = new TransactionIn();
res.PreviousOutput = OutPoint.Parse(buffer, ref index);
var script_length = Helper.ReadVariableUInt(buffer, ref index);
res.Script = SignatureScript.Parse(buffer, ref index, (int)script_length);
// see http://bitcoin.stackexchange.com/questions/2025/what-is-txins-sequence
// Transaction version as defined by the sender. Intended for "replacement" of transactions when information is updated before inclusion into a block.
res.Sequence =
((uint)buffer[index++] << 0) |
((uint)buffer[index++] << 8) |
((uint)buffer[index++] << 16) |
((uint)buffer[index++] << 24);
return(res);
}
public static Transaction Parse(byte[] buffer, ref int index)
{
var res = new Transaction();
var start_index = index;
res.Version =
((int)buffer[index++] << 0) |
((int)buffer[index++] << 8) |
((int)buffer[index++] << 16) |
((int)buffer[index++] << 24);
var transactionCount = Helper.ReadVariableUInt(buffer, ref index);
res.Ins = new TransactionIn[transactionCount];
for (ulong i = 0; i < transactionCount; i++)
{
res.Ins[i] = TransactionIn.Parse(buffer, ref index);
}
transactionCount = Helper.ReadVariableUInt(buffer, ref index);
res.Outs = new TransactionOut[transactionCount];
for (ulong i = 0; i < transactionCount; i++)
{
res.Outs[i] = TransactionOut.Parse(buffer, ref index);
}
// the doc makes special mention of this:
// "If all TxIn inputs have final (0xffffffff) sequence numbers then lock_time is irrelevant. Otherwise, the transaction may not be added to a block until after lock_time (see NLockTime)."
// as such, this might hide data under those context
var is_lock_time_irrelevant = res.Ins.All(o => o.Sequence == 0xFFFFFFFF);
res.LockTime = LockTime.Parse(buffer, ref index, is_lock_time_irrelevant);
res.TransactionHash = Helper.SHA256_2(buffer, start_index, index - start_index);
return(res);
}
