public bool TryReadBlock(ref SequenceReader <byte> r)
{
if (!TryReadBlockHeader(ref r))
{
goto fail;
}
if (!r.TryReadVarint(out long count))
{
goto fail;
}
_txs = new KzTransaction[count];
for (var i = 0L; i < count; i++)
{
var t = new KzTransaction();
_txs[i] = t;
if (!t.TryReadTransaction(ref r))
{
goto fail;
}
}
if (!VerifyMerkleRoot())
{
goto fail;
}
return(true);
fail:
return(false);
}
public KzBTransaction(KzTransaction tx)
{
Version = tx.Version;
Vin = tx.Vin.Cast <KzBTxIn>().ToList();
Vout = tx.Vout.Cast <KzBTxOut>().ToList();
LockTime = tx.LockTime;
HashTx = tx.HashTx;
if (HashTx.Value == KzUInt256.Zero)
{
HashTx = null;
}
}
public KzBTransaction(KzTransaction tx)
{
Version = tx.Version;
Vin = tx.Vin.Cast <KzBTxIn>().ToList();
Vout = tx.Vout.Cast <KzBTxOut>().ToList();
LockTime = tx.LockTime;
TxId = tx.TxId;
if (TxId.Value == KzUInt256.Zero)
{
TxId = null;
}
}
/// <summary>
/// Update the incremental state by one additional transaction hash.
/// This creates at most one KzMerkleTreeNode per level of the tree.
/// These are reused as subtrees fill up.
/// </summary>
/// <param name="tx"></param>
void AddTransaction(KzTransaction tx)
{
_count++;
var newHash = tx.TxId;
if (_count == 1)
{
// First transaction.
_nodes.Add(new KzMerkleTreeNode(newHash, null));
}
else
{
var n = _nodes[0];
if (n.HasBoth)
{
// Reuse previously filled nodes.
var n0 = n;
while (n?.HasBoth == true)
{
n.RightOfParent = !n.RightOfParent;
n.HasRight = false;
n.HasLeft = false;
n = n.Parent;
}
n0.SetLeftHash(newHash);
}
else
{
// Complete leaf node, compute completed hashes and propagate upwards.
n.SetRightHash(newHash);
do
{
newHash = ComputeHash(n);
var np = n.Parent;
if (np == null)
{
_nodes.Add(new KzMerkleTreeNode(newHash, n));
break;
}
if (n.LeftOfParent)
{
np.SetLeftHash(newHash);
}
else
{
np.SetRightHash(newHash);
}
n = np;
} while (n.HasBoth);
}
}
}
async public Task <KzTransaction> GetTransactionsByHash(KzUInt256 txId)
{
var url = $"https://api.whatsonchain.com/v1/bsv/{Kz.Params.strNetworkID}/tx/hash/{txId}";
var json = await _HttpClient.GetStringAsync(url);
var woctx = JsonConvert.DeserializeObject <Transaction>(json);
var tx = new KzTransaction();
var ros = new ReadOnlySequence <byte>(woctx.hex.HexToBytes());
if (!tx.TryReadTransaction(ref ros))
{
tx = null;
}
return(tx);
}
public bool TryParseBlock(ref SequenceReader <byte> r, int height, IKzBlockParser bp)
{
var offset = r.Consumed;
if (!TryReadBlockHeader(ref r))
{
goto fail;
}
Height = height;
bp.BlockStart(this, offset);
if (!r.TryReadVarint(out long count))
{
goto fail;
}
_txs = new KzTransaction[count];
for (var i = 0L; i < count; i++)
{
var t = new KzTransaction();
_txs[i] = t;
if (!t.TryParseTransaction(ref r, bp))
{
goto fail;
}
}
if (!VerifyMerkleRoot())
{
goto fail;
}
bp.BlockParsed(this, r.Consumed);
return(true);
fail:
return(false);
}
KzBlock CreateGenesisBlock(string pszTimestamp,
KzScript genesisOutputScript,
UInt32 nTime, UInt32 nNonce,
UInt32 nBits, Int32 nVersion,
Int64 genesisReward)
{
var txs = new KzTransaction[] {
new KzTransaction(
version: 1,
vin: new KzTxIn[] {
new KzTxIn(
prevout: new KzOutPoint(KzUInt256.Zero, -1),
scriptSig: new KzScript(""),
sequence: 0)
},
vout: new KzTxOut[] {
new KzTxOut(
value: 0,
scriptPub: new KzScript("")
)
},
lockTime: 0
)
};
var hashMerkleRoot = KzMerkleTree.ComputeMerkleRoot(txs);
var genesis = new KzBlock(
txs: txs,
version: 1,
hashPrevBlock: KzUInt256.Zero,
hashMerkleRoot: hashMerkleRoot,
time: 1231006506,
bits: 0x1d00ffff,
nonce: 2083236893
);
return(genesis);
}
