static (bool ok, ReadOnlySequence <byte> ros) FetchBlockByHeightAndHash(int height, KzUInt256?hash, KzBlock b)
{
var kzrpc = KzH.GetKzRpc();
if (hash == null)
{
hash = new KzUInt256(kzrpc.GetBlockHash(height));
}
var raw = kzrpc.GetBlockRaw(hash.Value).GetBytes();
var ros = new ReadOnlySequence <byte>(raw);
var bh = new KzBlockHeader {
Height = height
};
b.Height = height;
var tros = ros;
if (!b.TryReadBlock(ref tros))
{
goto fail;
}
return(true, ros);
fail:
return(false, ros);
}
public void ByteAccess()
{
var i = new KzUInt256();
var s = i.Span;
s[0] = 0x21;
s[31] = 0xfe;
var str = i.ToString();
Assert.Equal("fe00000000000000000000000000000000000000000000000000000000000021", str);
}
public void LeftShift()
{
var a = new KzUInt256(1);
Assert.Equal(new KzUInt256(1, 0, 0, 0), a);
Assert.Equal(new KzUInt256(0, 1, 0, 0), a << 64);
Assert.Equal(new KzUInt256(0, 4, 0, 0), a << 66);
Assert.Equal(new KzUInt256(0, 0, 1, 0), a << (64 + 64));
Assert.Equal(new KzUInt256(0, 0, 4, 0), a << (66 + 64));
Assert.Equal(new KzUInt256(0, 0, 0, 1), a << (64 + 64 + 64));
Assert.Equal(new KzUInt256(0, 0, 0, 4), a << (66 + 64 + 64));
}
static async Task ReadBlockHashPipeAsync(PipeReader reader)
{
// Read Bitcoin block ids from a PipeReader
while (_zmqRunning)
{
var rr = await reader.ReadAsync();
var buf = rr.Buffer;
var blockId = new KzUInt256();
buf.ToSpan().CopyTo(blockId.Span);
reader.AdvanceTo(buf.GetPosition(32));
KzH.WriteLine($"BlockId parsed id={blockId.ToHex()}");
}
}
public void HexByteOrder()
{
var hex = "fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210";
var fbf = new byte[] { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 };
var fbl = fbf.Reverse().ToArray();
var ifbl = new KzUInt256(hex, firstByteFirst: false);
var ifbf = new KzUInt256(hex, firstByteFirst: true);
Assert.Equal(ifbl.ReadOnlySpan.ToArray(), fbl);
Assert.Equal(ifbf.ReadOnlySpan.ToArray(), fbf);
Assert.Equal(hex, ifbl.ToString());
Assert.Equal(hex, ifbf.ToStringFirstByteFirst());
}
