public Transaction Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
var transactionSequence = context.PeekNextItem();
int transactionLength = context.ReadSequenceLength();
int lastCheck = context.Position + transactionLength;
Transaction transaction = new Transaction();
transaction.Nonce = context.DecodeUInt256();
transaction.GasPrice = context.DecodeUInt256();
transaction.GasLimit = context.DecodeUInt256();
transaction.To = context.DecodeAddress();
transaction.Value = context.DecodeUInt256();
if (transaction.To == null)
{
transaction.Init = context.DecodeByteArray();
}
else
{
transaction.Data = context.DecodeByteArray();
}
if (context.Position < lastCheck)
{
Span <byte> vBytes = context.DecodeByteArraySpan();
Span <byte> rBytes = context.DecodeByteArraySpan();
Span <byte> sBytes = context.DecodeByteArraySpan();
if (vBytes[0] == 0 || rBytes[0] == 0 || sBytes[0] == 0)
{
throw new RlpException("VRS starting with 0");
}
if (rBytes.Length > 32 || sBytes.Length > 32)
{
throw new RlpException("R and S lengths expected to be less or equal 32");
}
int v = vBytes.ToInt32();
if (rBytes.SequenceEqual(Bytes.Zero32) && sBytes.SequenceEqual(Bytes.Zero32))
{
throw new RlpException("Both 'r' and 's' are zero when decoding a transaction.");
}
Signature signature = new Signature(rBytes, sBytes, v);
transaction.Signature = signature;
transaction.Hash = Keccak.Compute(transactionSequence);
}
if (!rlpBehaviors.HasFlag(RlpBehaviors.AllowExtraData))
{
context.Check(lastCheck);
}
return(transaction);
}