public void RequestBlocks(BlockHeader[] headers)
{
MemoryStream stream = new MemoryStream();
BinaryWriter bw = new BinaryWriter(stream);
int count = headers.Length;
Program.WriteVarInt(bw, (ulong)count);
foreach (BlockHeader b in headers)
{
const int blockType = 2;
bw.Write(blockType);
bw.Write(b.mHash);
}
SendPacket("getdata", stream.ToArray());
bw.Close();
}
public void Load(BinaryReader br)
{
int version = br.ReadInt32();
mCurrentHeight = br.ReadUInt32();
mBlockLock.WaitOne();
mBlocks.Clear();
int blockCount = br.ReadInt32();
for (int i = 0; i < blockCount; i++)
{
BlockHeader h = new BlockHeader();
h.Load(br);
Block b = new Block();
b.mHeader = h;
b.mHash = Program.HashToString(h.mHash);
mBlocks.Add(b);
}
mBlockLock.ReleaseMutex();
}
public void HandleBlockPacket(NodeConnection node, byte[] payload)
{
MemoryStream stream = new MemoryStream(payload);
BinaryReader br = new BinaryReader(stream);
uint version = br.ReadUInt32();
byte[] prevBlock = br.ReadBytes(32);
byte[] merkle = br.ReadBytes(32);
uint time = br.ReadUInt32();
uint bits = br.ReadUInt32();
uint nonce = br.ReadUInt32();
ulong txn = Program.ReadVarInt(br);
BlockHeader h = new BlockHeader(version, prevBlock, merkle, time, bits, nonce);
h.ComputeHash(mScryptBlockHash);
string hash = Program.HashToString(h.mHash);
Block block = FindBlock(hash);
if( block == null )
{
// Create a new block
block = new Block();
block.mHeader = h;
mBlockLock.WaitOne();
mBlocks.Add(block);
mBlockLock.ReleaseMutex();
}
block.mTransactions.Clear();
if (mWantsTransactionData)
{
for (ulong j = 0; j < txn; j++)
{
Transaction tx = new Transaction();
tx.mVersion = br.ReadUInt32();
tx.mTimestamp = br.ReadUInt32();
ulong inCount = Program.ReadVarInt(br);
for (ulong k = 0; k < inCount; k++)
{
TransactionInput ti = new TransactionInput();
ti.mPrevOuptutHash = br.ReadBytes(32);
ti.mPrevOutputIndex = br.ReadUInt32();
ulong scriptLen = Program.ReadVarInt(br);
ti.mScript = br.ReadBytes((int)scriptLen);
ti.mSequence = br.ReadUInt32();
tx.mInputs.Add(ti);
}
ulong outCount = Program.ReadVarInt(br);
for (ulong k = 0; k < outCount; k++)
{
TransactionOutput to = new TransactionOutput();
to.mValue = br.ReadUInt64();
to.mRealValue = (double)to.mValue / 1000000.0;
ulong scriptLen = Program.ReadVarInt(br);
to.mScript = br.ReadBytes((int)scriptLen);
tx.mOutputs.Add(to);
}
tx.mLockTime = br.ReadUInt32();
if (tx.mVersion > 1)
{
ulong commentLen = Program.ReadVarInt(br);
tx.mComment = br.ReadBytes((int)commentLen);
}
block.mTransactions.Add(tx);
}
}
br.Close();
}
public void HandleHeadersPacket(NodeConnection node, byte[] payload)
{
MemoryStream stream = new MemoryStream(payload);
BinaryReader br = new BinaryReader(stream);
List<BlockHeader> headers = new List<BlockHeader>();
ulong count = Program.ReadVarInt(br);
if (count == 0)
{
mPullingHeaders = false;
return;
}
for (ulong i = 0; i < count; i++)
{
uint version = br.ReadUInt32();
byte[] prevBlock = br.ReadBytes(32);
byte[] merkle = br.ReadBytes(32);
uint time = br.ReadUInt32();
uint bits = br.ReadUInt32();
uint nonce = br.ReadUInt32();
ulong txn = Program.ReadVarInt(br);
if( !mIgnoreSigLen )
{
ulong siglen = Program.ReadVarInt(br);
}
BlockHeader header = new BlockHeader(version, prevBlock, merkle, time, bits, nonce);
if (headers.Count > 0)
headers[headers.Count - 1].mHash = prevBlock;
headers.Add(header);
}
br.Close();
if( headers[0].mHash != null )
headers[0].ValidateHash();
mBlockLock.WaitOne();
foreach (BlockHeader h in headers)
{
Block b = new Block();
b.mHeader = h;
if (b.mHeader.mHash == null)
b.mHeader.ComputeHash(mScryptBlockHash);
b.mHash = Program.HashToString(b.mHeader.mHash);
mBlocks.Add(b);
}
mCurrentHeight += (uint)headers.Count;
if (count < 2000)
{
// End of the list
// Remove all blocks that are older than we care about
RemoveOldBlocks();
// If we want transaction data, request the full blocks
if (mWantsTransactionData)
{
headers.Clear();
mBlockLock.WaitOne();
foreach( Block b in mBlocks )
{
if( b.mTransactions.Count < 1)
headers.Add(b.mHeader);
}
mBlockLock.ReleaseMutex();
node.RequestBlocks(headers.ToArray());
}
mPullingHeaders = false;
}
else
{
// Request again til we get all of them
node.RequestHeaders(mBlocks[mBlocks.Count - 1].mHeader.mHash);
}
mBlockLock.ReleaseMutex();
Console.WriteLine("Blocks: " + mCurrentHeight);
}
