using System;
using System.IO;
-using System.Linq;
using System.Collections.Concurrent;
using SQLite.Net;
-using SQLite.Net.Attributes;
using SQLite.Net.Interop;
using SQLite.Net.Platform.Generic;
-using SQLiteNetExtensions.Attributes;
using System.Collections.Generic;
-using System.Diagnostics.Contracts;
using System.Text;
namespace Novacoin
{
- [Table("BlockStorage")]
- public class CBlockStoreItem : IBlockStorageItem
- {
- #region IBlockStorageItem
- /// <summary>
- /// Item ID in the database
- /// </summary>
- [PrimaryKey, AutoIncrement]
- public long ItemID { get; set; }
-
- /// <summary>
- /// PBKDF2+Salsa20 of block hash
- /// </summary>
- [Unique]
- public byte[] Hash { get; set; }
-
- /// <summary>
- /// Version of block schema
- /// </summary>
- [Column("nVersion")]
- public uint nVersion { get; set; }
-
- /// <summary>
- /// Previous block hash.
- /// </summary>
- [Column("prevHash")]
- public byte[] prevHash { get; set; }
-
- /// <summary>
- /// Merkle root hash.
- /// </summary>
- [Column("merkleRoot")]
- public byte[] merkleRoot { get; set; }
-
- /// <summary>
- /// Block timestamp.
- /// </summary>
- [Column("nTime")]
- public uint nTime { get; set; }
-
- /// <summary>
- /// Compressed difficulty representation.
- /// </summary>
- [Column("nBits")]
- public uint nBits { get; set; }
-
- /// <summary>
- /// Nonce counter.
- /// </summary>
- [Column("nNonce")]
- public uint nNonce { get; set; }
-
- /// <summary>
- /// Next block hash.
- /// </summary>
- [Column("nextHash")]
- public byte[] nextHash { get; set; }
-
- /// <summary>
- /// Block type flags
- /// </summary>
- [Column("BlockTypeFlag")]
- public BlockType BlockTypeFlag { get; set; }
-
- /// <summary>
- /// Stake modifier
- /// </summary>
- [Column("nStakeModifier")]
- public long nStakeModifier { get; set; }
-
- /// <summary>
- /// Proof-of-Stake hash
- /// </summary>
- [Column("hashProofOfStake")]
- public byte[] hashProofOfStake { get; set; }
-
- /// <summary>
- /// Stake generation outpoint.
- /// </summary>
- [Column("prevoutStake")]
- public byte[] prevoutStake { get; set; }
-
- /// <summary>
- /// Stake generation time.
- /// </summary>
- [Column("nStakeTime")]
- public uint nStakeTime { get; set; }
-
- /// <summary>
- /// Block height, encoded in VarInt format
- /// </summary>
- [Column("nHeight")]
- public uint nHeight { get; set; }
-
- /// <summary>
- /// Chain trust score, serialized and trimmed uint256 representation.
- /// </summary>
- [Column("ChainTrust")]
- public byte[] ChainTrust { get; set; }
-
- /// <summary>
- /// Block position in file, encoded in VarInt format
- /// </summary>
- [Column("BlockPos")]
- public byte[] BlockPos { get; set; }
-
- /// <summary>
- /// Block size in bytes, encoded in VarInt format
- /// </summary>
- [Column("BlockSize")]
- public byte[] BlockSize { get; set; }
- #endregion
-
- /// <summary>
- /// Accessor and mutator for BlockPos value.
- /// </summary>
- [Ignore]
- public long nBlockPos
- {
- get { return (long)VarInt.DecodeVarInt(BlockPos); }
- set { BlockPos = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Accessor and mutator for BlockSize value.
- /// </summary>
- [Ignore]
- public int nBlockSize
- {
- get { return (int)VarInt.DecodeVarInt(BlockSize); }
- set { BlockSize = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Fill database item with data from given block header.
- /// </summary>
- /// <param name="header">Block header</param>
- /// <returns>Header hash</returns>
- public uint256 FillHeader(CBlockHeader header)
- {
- uint256 _hash = header.Hash;
-
- Hash = _hash;
-
- nVersion = header.nVersion;
- prevHash = header.prevHash;
- merkleRoot = header.merkleRoot;
- nTime = header.nTime;
- nBits = header.nBits;
- nNonce = header.nNonce;
-
- return _hash;
- }
-
- /// <summary>
- /// Reconstruct block header from item data.
- /// </summary>
- public CBlockHeader BlockHeader
- {
- get
- {
- CBlockHeader header = new CBlockHeader();
-
- header.nVersion = nVersion;
- header.prevHash = prevHash;
- header.merkleRoot = merkleRoot;
- header.nTime = nTime;
- header.nBits = nBits;
- header.nNonce = nNonce;
-
- return header;
- }
- }
-
- /// <summary>
- /// Read block from file.
- /// </summary>
- /// <param name="reader">Stream with read access.</param>
- /// <param name="reader">CBlock reference.</param>
- /// <returns>Result</returns>
- public bool ReadFromFile(ref Stream reader, out CBlock block)
- {
- var buffer = new byte[nBlockSize];
- block = null;
-
- try
- {
- reader.Seek(nBlockPos, SeekOrigin.Begin);
-
- if (nBlockSize != reader.Read(buffer, 0, nBlockSize))
- {
- return false;
- }
-
- block = new CBlock(buffer);
-
- return true;
- }
- catch (IOException)
- {
- // I/O error
- return false;
- }
- catch (BlockException)
- {
- // Constructor exception
- return false;
- }
- }
-
- /// <summary>
- /// Writes given block to file and prepares cursor object for insertion into the database.
- /// </summary>
- /// <param name="writer">Stream with write access.</param>
- /// <param name="block">CBlock reference.</param>
- /// <returns>Result</returns>
- public bool WriteToFile(ref Stream writer, ref CBlock block)
- {
- try
- {
- byte[] blockBytes = block;
-
- var magicBytes = BitConverter.GetBytes(CBlockStore.nMagicNumber);
- var blkLenBytes = BitConverter.GetBytes(blockBytes.Length);
-
- // Seek to the end and then append magic bytes there.
- writer.Seek(0, SeekOrigin.End);
- writer.Write(magicBytes, 0, magicBytes.Length);
- writer.Write(blkLenBytes, 0, blkLenBytes.Length);
-
- // Save block size and current position in the block cursor fields.
- nBlockPos = writer.Position;
- nBlockSize = blockBytes.Length;
-
- // Write block and flush the stream.
- writer.Write(blockBytes, 0, blockBytes.Length);
- writer.Flush();
-
- return true;
- }
- catch (IOException)
- {
- // I/O error
- return false;
- }
- catch (Exception)
- {
- // Some serialization error
- return false;
- }
- }
-
- /// <summary>
- /// Previous block cursor
- /// </summary>
- [Ignore]
- public CBlockStoreItem prev
- {
- get { return CBlockStore.Instance.GetMapCursor(prevHash); }
- }
-
- /// <summary>
- /// Next block cursor
- /// </summary>
- [Ignore]
- public CBlockStoreItem next
- {
- get
- {
- if (nextHash == null)
- {
- return null;
- }
-
- return CBlockStore.Instance.GetMapCursor(nextHash);
- }
- set
- {
- nextHash = value.Hash;
-
- CBlockStore.Instance.UpdateMapCursor(this);
- }
- }
-
- [Ignore]
- bool IsInMainChain
- {
- get { return (next != null); }
- }
-
- /// <summary>
- /// STake modifier generation flag
- /// </summary>
- [Ignore]
- public bool GeneratedStakeModifier
- {
- get { return (BlockTypeFlag & BlockType.BLOCK_STAKE_MODIFIER) != 0; }
- }
-
- /// <summary>
- /// Stake entropy bit
- /// </summary>
- [Ignore]
- public uint StakeEntropyBit
- {
- get { return ((uint)(BlockTypeFlag & BlockType.BLOCK_STAKE_ENTROPY) >> 1); }
- }
-
- /// <summary>
- /// Sets stake modifier and flag.
- /// </summary>
- /// <param name="nModifier">New stake modifier.</param>
- /// <param name="fGeneratedStakeModifier">Set generation flag?</param>
- public void SetStakeModifier(long nModifier, bool fGeneratedStakeModifier)
- {
- nStakeModifier = nModifier;
- if (fGeneratedStakeModifier)
- BlockTypeFlag |= BlockType.BLOCK_STAKE_MODIFIER;
- }
-
- /// <summary>
- /// Set entropy bit.
- /// </summary>
- /// <param name="nEntropyBit">Entropy bit value (0 or 1).</param>
- /// <returns>False if value is our of range.</returns>
- public bool SetStakeEntropyBit(byte nEntropyBit)
- {
- if (nEntropyBit > 1)
- return false;
- BlockTypeFlag |= (nEntropyBit != 0 ? BlockType.BLOCK_STAKE_ENTROPY : 0);
- return true;
- }
-
- /// <summary>
- /// Set proof-of-stake flag.
- /// </summary>
- public void SetProofOfStake()
- {
- BlockTypeFlag |= BlockType.BLOCK_PROOF_OF_STAKE;
- }
-
- /// <summary>
- /// Block has no proof-of-stake flag.
- /// </summary>
- [Ignore]
- public bool IsProofOfWork
- {
- get { return (BlockTypeFlag & BlockType.BLOCK_PROOF_OF_STAKE) == 0; }
- }
-
- /// <summary>
- /// Block has proof-of-stake flag set.
- /// </summary>
- [Ignore]
- public bool IsProofOfStake
- {
- get { return (BlockTypeFlag & BlockType.BLOCK_PROOF_OF_STAKE) != 0; }
- }
-
- /// <summary>
- /// Block trust score.
- /// </summary>
- [Ignore]
- public uint256 nBlockTrust
- {
- get
- {
- uint256 nTarget = 0;
- nTarget.Compact = nBits;
-
- /* Old protocol */
- if (nTime < NetInfo.nChainChecksSwitchTime)
- {
- return IsProofOfStake ? (new uint256(1) << 256) / (nTarget + 1) : 1;
- }
-
- /* New protocol */
-
- // Calculate work amount for block
- var nPoWTrust = NetInfo.nPoWBase / (nTarget + 1);
-
- // Set nPowTrust to 1 if we are checking PoS block or PoW difficulty is too low
- nPoWTrust = (IsProofOfStake || !nPoWTrust) ? 1 : nPoWTrust;
-
- // Return nPoWTrust for the first 12 blocks
- if (prev == null || prev.nHeight < 12)
- return nPoWTrust;
-
- CBlockStoreItem currentIndex = prev;
-
- if (IsProofOfStake)
- {
- var nNewTrust = (new uint256(1) << 256) / (nTarget + 1);
-
- // Return 1/3 of score if parent block is not the PoW block
- if (!prev.IsProofOfWork)
- {
- return nNewTrust / 3;
- }
-
- int nPoWCount = 0;
-
- // Check last 12 blocks type
- while (prev.nHeight - currentIndex.nHeight < 12)
- {
- if (currentIndex.IsProofOfWork)
- {
- nPoWCount++;
- }
- currentIndex = currentIndex.prev;
- }
-
- // Return 1/3 of score if less than 3 PoW blocks found
- if (nPoWCount < 3)
- {
- return nNewTrust / 3;
- }
-
- return nNewTrust;
- }
- else
- {
- var nLastBlockTrust = prev.nChainTrust - prev.prev.nChainTrust;
-
- // Return nPoWTrust + 2/3 of previous block score if two parent blocks are not PoS blocks
- if (!prev.IsProofOfStake || !prev.prev.IsProofOfStake)
- {
- return nPoWTrust + (2 * nLastBlockTrust / 3);
- }
-
- int nPoSCount = 0;
-
- // Check last 12 blocks type
- while (prev.nHeight - currentIndex.nHeight < 12)
- {
- if (currentIndex.IsProofOfStake)
- {
- nPoSCount++;
- }
- currentIndex = currentIndex.prev;
- }
-
- // Return nPoWTrust + 2/3 of previous block score if less than 7 PoS blocks found
- if (nPoSCount < 7)
- {
- return nPoWTrust + (2 * nLastBlockTrust / 3);
- }
-
- nTarget.Compact = prev.nBits;
-
- if (!nTarget)
- {
- return 0;
- }
-
- var nNewTrust = (new uint256(1) << 256) / (nTarget + 1);
-
- // Return nPoWTrust + full trust score for previous block nBits
- return nPoWTrust + nNewTrust;
- }
- }
- }
-
- /// <summary>
- /// Stake modifier checksum.
- /// </summary>
- public uint nStakeModifierChecksum;
-
- /// <summary>
- /// Chain trust score
- /// </summary>
- [Ignore]
- public uint256 nChainTrust {
- get { return Interop.AppendWithZeros(ChainTrust); }
- set { ChainTrust = Interop.TrimArray(value); }
- }
-
- public long nMint { get; internal set; }
- public long nMoneySupply { get; internal set; }
- }
-
- /// <summary>
- /// Block type.
- /// </summary>
- public enum BlockType
- {
- BLOCK_PROOF_OF_STAKE = (1 << 0), // is proof-of-stake block
- BLOCK_STAKE_ENTROPY = (1 << 1), // entropy bit for stake modifier
- BLOCK_STAKE_MODIFIER = (1 << 2), // regenerated stake modifier
- };
-
- /// <summary>
- /// Transaction type.
- /// </summary>
- public enum TxFlags : byte
- {
- TX_COINBASE,
- TX_COINSTAKE,
- TX_USER
- }
-
- /// <summary>
- /// Output flags.
- /// </summary>
- public enum OutputFlags : byte
- {
- AVAILABLE, // Unspent output
- SPENT // Spent output
- }
-
- [Table("MerkleNodes")]
- public class CMerkleNode : IMerkleNode
- {
- #region IMerkleNode
- /// <summary>
- /// Node identifier
- /// </summary>
- [PrimaryKey, AutoIncrement]
- public long nMerkleNodeID { get; set; }
-
- /// <summary>
- /// Reference to parent block database item.
- /// </summary>
- [ForeignKey(typeof(CBlockStoreItem), Name = "ItemId")]
- public long nParentBlockID { get; set; }
-
- /// <summary>
- /// Transaction type flag
- /// </summary>
- [Column("TransactionFlags")]
- public TxFlags TransactionFlags { get; set; }
-
- /// <summary>
- /// Transaction hash
- /// </summary>
- [Column("TransactionHash")]
- public byte[] TransactionHash { get; set; }
-
- /// <summary>
- /// Transaction offset from the beginning of block header, encoded in VarInt format.
- /// </summary>
- [Column("TxOffset")]
- public byte[] TxOffset { get; set; }
-
- /// <summary>
- /// Transaction size, encoded in VarInt format.
- /// </summary>
- [Column("TxSize")]
- public byte[] TxSize { get; set; }
- #endregion
-
- /// <summary>
- /// Read transaction from file.
- /// </summary>
- /// <param name="reader">Stream with read access.</param>
- /// <param name="tx">CTransaction reference.</param>
- /// <returns>Result</returns>
- public bool ReadFromFile(ref Stream reader, long nBlockPos, out CTransaction tx)
- {
- var buffer = new byte[CTransaction.nMaxTxSize];
-
- tx = null;
-
- try
- {
- reader.Seek(nBlockPos + nTxOffset, SeekOrigin.Begin); // Seek to transaction offset
-
- if (nTxSize != reader.Read(buffer, 0, nTxSize))
- {
- return false;
- }
-
- tx = new CTransaction(buffer);
-
- return true;
- }
- catch (IOException)
- {
- // I/O error
- return false;
- }
- catch (TransactionConstructorException)
- {
- // Constructor error
- return false;
- }
- }
-
- /// <summary>
- /// Transaction offset accessor
- /// </summary>
- [Ignore]
- public long nTxOffset
- {
- get { return (long) VarInt.DecodeVarInt(TxOffset); }
- private set { TxOffset = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Transaction size accessor
- /// </summary>
- [Ignore]
- public int nTxSize
- {
- get { return (int)VarInt.DecodeVarInt(TxSize); }
- private set { TxSize = VarInt.EncodeVarInt(value); }
- }
-
- public CMerkleNode(CTransaction tx)
- {
- nTxOffset = -1;
- nParentBlockID = -1;
-
- nTxSize = tx.Size;
- TransactionHash = tx.Hash;
-
- if (tx.IsCoinBase)
- {
- TransactionFlags |= TxFlags.TX_COINBASE;
- }
- else if (tx.IsCoinStake)
- {
- TransactionFlags |= TxFlags.TX_COINSTAKE;
- }
- else
- {
- TransactionFlags |= TxFlags.TX_USER;
- }
- }
-
- public CMerkleNode(long nBlockId, long nOffset, CTransaction tx)
- {
- nParentBlockID = nBlockId;
-
- nTxOffset = nOffset;
- nTxSize = tx.Size;
- TransactionHash = tx.Hash;
-
- if (tx.IsCoinBase)
- {
- TransactionFlags |= TxFlags.TX_COINBASE;
- }
- else if (tx.IsCoinStake)
- {
- TransactionFlags |= TxFlags.TX_COINSTAKE;
- }
- else
- {
- TransactionFlags |= TxFlags.TX_USER;
- }
- }
-
- }
-
- [Table("Outputs")]
- public class TxOutItem : ITxOutItem
- {
- /// <summary>
- /// Reference to transaction item.
- /// </summary>
- [ForeignKey(typeof(CMerkleNode), Name = "nMerkleNodeID")]
- public long nMerkleNodeID { get; set; }
-
- /// <summary>
- /// Output flags
- /// </summary>
- public OutputFlags outputFlags { get; set; }
-
- /// <summary>
- /// Output number in VarInt format.
- /// </summary>
- public byte[] OutputNumber { get; set; }
-
- /// <summary>
- /// Output value in VarInt format.
- /// </summary>
- public byte[] OutputValue { get; set; }
-
- /// <summary>
- /// Second half of script which contains spending instructions.
- /// </summary>
- public byte[] scriptPubKey { get; set; }
-
- /// <summary>
- /// Getter for output number.
- /// </summary>
- [Ignore]
- public uint nOut
- {
- get { return (uint)VarInt.DecodeVarInt(OutputNumber); }
- private set { OutputNumber = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Getter for output value.
- /// </summary>
- [Ignore]
- public ulong nValue
- {
- get { return VarInt.DecodeVarInt(OutputValue); }
- private set { OutputValue = VarInt.EncodeVarInt(value); }
- }
-
- /// <summary>
- /// Getter ans setter for IsSpent flag.
- /// </summary>
- [Ignore]
- public bool IsSpent
- {
- get { return (outputFlags & OutputFlags.SPENT) != 0; }
- set { outputFlags |= value ? OutputFlags.SPENT : OutputFlags.AVAILABLE; }
- }
-
- public TxOutItem(CTxOut o, uint nOut)
- {
- nValue = o.nValue;
- scriptPubKey = o.scriptPubKey;
- this.nOut = nOut;
- }
- }
-
public class CBlockStore : IDisposable
{
public const uint nMagicNumber = 0xe5e9e8e4;
private ConcurrentDictionary<COutPoint, uint> mapStakeSeen = new ConcurrentDictionary<COutPoint, uint>();
private ConcurrentDictionary<COutPoint, uint> mapStakeSeenOrphan = new ConcurrentDictionary<COutPoint, uint>();
- /// <summary>
- /// Trust score for the longest chain.
- /// </summary>
- private uint256 nBestChainTrust = 0;
/// <summary>
- /// Top block of the best chain.
+ /// Copy of chain state object.
/// </summary>
- private uint256 nHashBestChain = 0;
+ private ChainState ChainParams;
/// <summary>
/// Cursor which is pointing us to the end of best chain.
/// Block file stream with read/write access
/// </summary>
private Stream fStreamReadWrite;
- private uint nBestHeight;
private uint nTimeBestReceived;
private int nTransactionsUpdated;
dbConn.CreateTable<CBlockStoreItem>(CreateFlags.AutoIncPK);
dbConn.CreateTable<CMerkleNode>(CreateFlags.AutoIncPK);
dbConn.CreateTable<TxOutItem>(CreateFlags.ImplicitPK);
+ dbConn.CreateTable<ChainState>(CreateFlags.AutoIncPK);
+
+ ChainParams = new ChainState()
+ {
+ nBestChainTrust = 0,
+ nBestHeight = 0,
+ nHashBestChain = 0
+ };
+
+ dbConn.Insert(ChainParams);
var genesisBlock = new CBlock(
Interop.HexToArray(
mapStakeSeen.TryAdd(item.prevoutStake, item.nStakeTime);
}
}
+
+ // Load data about the top node.
+ ChainParams = dbConn.Table<ChainState>().First();
}
}
return false;
}
- interface InputsJoin : ITxOutItem
- {
- byte[] TransactionHash { get; set; }
- }
public bool FetchInputs(CTransaction tx, ref Dictionary<COutPoint, TxOutItem> queued, ref Dictionary<COutPoint, TxOutItem> inputs, bool IsBlock, out bool Invalid)
{
return false; // blockMap add failed
}
- if (itemTemplate.nChainTrust > nBestChainTrust)
+ if (itemTemplate.nChainTrust > ChainParams.nBestChainTrust)
{
// New best chain
{
genesisBlockCursor = cursor;
}
- else if (nHashBestChain == (uint256)cursor.prevHash)
+ else if (ChainParams.nHashBestChain == (uint256)cursor.prevHash)
{
if (!SetBestChainInner(cursor))
{
}
}
- nHashBestChain = cursor.Hash;
bestBlockCursor = cursor;
- nBestHeight = cursor.nHeight;
- nBestChainTrust = cursor.nChainTrust;
nTimeBestReceived = Interop.GetTime();
nTransactionsUpdated++;
}
}
- if (!WriteHashBestChain(cursorIntermediate.Hash))
+ if (!UpdateTopChain(cursorIntermediate))
{
- return false; // WriteHashBestChain failed
+ return false; // UpdateTopChain failed
}
// Make sure it's successfully written to disk
}
// Adding to current best branch
- if (!ConnectBlock(cursor, ref block) || !WriteHashBestChain(hash))
+ if (!ConnectBlock(cursor, ref block) || !UpdateTopChain(cursor))
{
InvalidChainFound(cursor);
return false;
queuedMerkleNodes.Add(hashTx, mNode);
var outKey = new COutPoint(hashTx, i);
- var outData = new TxOutItem(tx.vout[i], i);
+ var outData = new TxOutItem();
+
+ outData.nValue = tx.vout[i].nValue;
+ outData.scriptPubKey = tx.vout[i].scriptPubKey;
+ outData.nOut = i;
+
outData.IsSpent = false;
return false; // Unable to save outpoints
}
- // TODO: the remaining stuff lol :D
-
- throw new NotImplementedException();
+ return true;
}
/// <summary>
throw new NotImplementedException();
}
- private bool WriteHashBestChain(uint256 hash)
+ /// <summary>
+ /// Set new top node or current best chain.
+ /// </summary>
+ /// <param name="cursor"></param>
+ /// <returns></returns>
+ private bool UpdateTopChain(CBlockStoreItem cursor)
{
- throw new NotImplementedException();
+ ChainParams.HashBestChain = cursor.Hash;
+ ChainParams.nBestChainTrust = cursor.nChainTrust;
+ ChainParams.nBestHeight = cursor.nHeight;
+
+ return dbConn.Update(ChainParams) != 0;
}
/// <summary>
return cursor.ReadFromFile(ref fStreamReadWrite, out block);
}
-
- /// <summary>
- /// Interface for join
- /// </summary>
- interface IBlockJoinMerkle : IBlockStorageItem, IMerkleNode
- {
- }
-
/// <summary>
/// Get block and transaction by transaction hash.
/// </summary>
/// <param name="TxID">Transaction hash</param>
/// <param name="block">Block reference</param>
- /// <param name="tx">Transaction reference</param>
/// <param name="nBlockPos">Block position reference</param>
- /// <param name="nTxPos">Transaction position reference</param>
/// <returns>Result of operation</returns>
- public bool GetBlockByTransactionID(uint256 TxID, ref CBlock block, ref CTransaction tx, ref long nBlockPos, ref long nTxPos)
+ public bool GetBlockByTransactionID(uint256 TxID, ref CBlock block, ref long nBlockPos)
{
- var queryResult = dbConn.Query<IBlockJoinMerkle>("select * from [BlockStorage] b left join [MerkleNodes] m on (b.[ItemID] = m.[nParentBlockID]) where m.[TransactionHash] = ?", (byte[])TxID);
+ var queryResult = dbConn.Query<CBlockStoreItem>("select b.* from [BlockStorage] b left join [MerkleNodes] m on (b.[ItemID] = m.[nParentBlockID]) where m.[TransactionHash] = ?", (byte[])TxID);
if (queryResult.Count == 1)
{
- CBlockStoreItem blockCursor = (CBlockStoreItem) queryResult[0];
- CMerkleNode txCursor = (CMerkleNode)queryResult[0];
-
- var reader = new BinaryReader(fStreamReadWrite).BaseStream;
-
- if (!txCursor.ReadFromFile(ref reader, blockCursor.nBlockPos, out tx))
- {
- return false; // Unable to read transaction
- }
+ CBlockStoreItem blockCursor = queryResult[0];
- return blockCursor.ReadFromFile(ref reader, out block);
+ return blockCursor.ReadFromFile(ref fStreamReadWrite, out block);
}
// Tx not found
git://git.novaco.in / NovacoinLibrary.git / blobdiff