static void Main(string[] args)
{
ITransaction txn5 = SetupTransactions();
IKeyStore keyStore = new KeyStore(Hmac.GenerateKey());
int levelOfDifficult = 3;
IBlock <ClaimSettlement> block1 = new Block(0, keyStore, levelOfDifficult);
IBlock <ClaimSettlement> block2 = new Block(1, keyStore, levelOfDifficult);
IBlock <ClaimSettlement> block3 = new Block(2, keyStore, levelOfDifficult);
IBlock <ClaimSettlement> block4 = new Block(3, keyStore, levelOfDifficult);
AddTransactionsToBlocksAndCalculateHashes(block1, block2, block3, block4);
var chain = new BlockChain <ClaimSettlement>();
chain.Add(block1);
chain.Add(block2);
chain.Add(block3);
chain.Add(block4);
if (chain.Verify())
{
Console.WriteLine("chain verified");
}
else
{
Console.WriteLine("chain verification failed");
}
}
public void GivenBlockChain_AppendTwoNode_ShouldVerify()
{
var now = DateTime.Now;
var principleSignature = new PrincipleSignature("issuer", "audience", TimeSpan.FromMinutes(1), new RsaPublicPrivateKey());
var blockChain = new BlockChain();
var block1 = new DataBlock <TextBlock>(now, "blockTypeV1", "blockIdV1", new TextBlock("name", "type", "author", "dataV1"));
block1 = block1.WithSignature(principleSignature);
blockChain.Add(block1);
block1.Validate(_workContext, principleSignature);
var block2 = new DataBlock <TextBlock>(now, "blockTypeV2", "blockIdV2", new TextBlock("name", "type", "author", "dataV2"));
block2 = block2.WithSignature(principleSignature);
blockChain.Add(block2);
block2.Validate(_workContext, principleSignature);
blockChain.IsValid().Should().BeTrue();
IPrincipleSignatureContainer keyContainer = new PrincipleSignatureContainer()
{
principleSignature,
};
blockChain.Validate(_workContext, keyContainer);
}
public void ReceiveCoins()
{
// Quick check that we can actually receive coins.
var tx1 = TestUtils.CreateFakeTx(_unitTestParams,
Utils.ToNanoCoins(1, 0),
_wallet.Keychain[0].ToAddress(_unitTestParams));
var b1 = TestUtils.CreateFakeBlock(_unitTestParams, _blockStore, tx1).Block;
_chain.Add(b1);
Assert.IsTrue(_wallet.GetBalance().CompareTo(0UL) > 0);
}
public void GivenBlockChain_AppendTwoNode_ShouldVerify()
{
var now = DateTimeOffset.Now;
var blockChain = new BlockChain();
var block1 = new DataBlock <TextBlock>(now, "blockTypeV1", "blockIdV1", new TextBlock("name", "type", "author", "dataV1"));
blockChain.Add(block1);
var block2 = new DataBlock <TextBlock>(now, "blockTypeV2", "blockIdV2", new TextBlock("name", "type", "author", "dataV2"));
blockChain.Add(block2);
blockChain.IsValid().Should().BeTrue();
}
public void AddAndReadTest()
{
if (System.IO.File.Exists(File2))
{
System.IO.File.Delete(File2);
}
if (System.IO.File.Exists($"{File2}.h"))
{
System.IO.File.Delete($"{File2}.h");
}
var blockChain = new BlockChain <TestBlockData>(File2);
using var sha256 = SHA256.Create();
TestBlockData data = new TestBlockData("12345678910");
var prevBlock = blockChain.First();
var block = Block <TestBlockData> .Create(prevBlock.Hash(sha256), data, prevBlock.GetBlockHeader().GetTarget(), sha256);
var token = new CancellationTokenSource();
token.CancelAfter(TimeSpan.FromSeconds(TimeoutInSec));
var m = block.Mine(token.Token);
m.Wait();
block = m.Result;
blockChain.Add(block);
Assert.IsTrue(TestHelper.ArrayEquals(block.ToArray(), blockChain.First().ToArray()),
"Block is not added to the blockchain, or could not read the blockchain");
Assert.IsTrue(blockChain.First().IsValid(prevBlock.Hash(sha256), sha256), "Added block is not valid");
}
public async Task FindNonce()
{
await Task.Run(() => {
lock (lockObject_) {
ulong nonce = 0;
do
{
NewBlock.Nonce = nonce;
var hash = GetHash(NewBlock);
if (hash < Target)
{
BlockChain.Add(NewBlock);
NewBlock = null;
LastHash = SerializeHash(hash);
OnBlockChainChanged();
TransactionPool.Clear();
OnTransactionPoolChanged();
return;
}
++nonce;
} while (nonce != ulong.MaxValue);
throw new Exception("nonce not found.");
}
});
}
public void GivenBlockChain_AppendSingleNode_ShouldVerify()
{
var now = DateTime.Now;
var principleSignature = new PrincipleSignature("bobTheIssuer", "bobCustomer", TimeSpan.FromMinutes(1), new RsaPublicPrivateKey());
var blockChain = new BlockChain();
var block1 = new DataBlock <TextBlock>(now, "blockTypeV1", "blockIdV1", new TextBlock("name", "type", "author", "dataV1"));
block1.Validate();
string block1Digest = block1.Digest;
block1 = block1.WithSignature(principleSignature);
blockChain.Add(block1);
block1.Validate();
block1Digest.Should().Be(block1.Digest);
block1.Validate(_workContext, principleSignature);
blockChain.IsValid().Should().BeTrue();
IPrincipleSignatureContainer keyContainer = new PrincipleSignatureContainer()
{
principleSignature,
};
blockChain.Validate(_workContext, keyContainer);
}
static void TestBlockChain(Block <TestBlockData> validBlock)
{
const string file = "blochweakdb2.feeawbasfewa";
Console.WriteLine($"--------------------- BlockChain2 --------------------------");
using var sha256 = SHA256.Create();
var blockChain = new BlockChain <TestBlockData>(file, sha256);
var sw = Stopwatch.StartNew();
for (int i = 0; i < count; i++)
{
blockChain.Add(validBlock);
}
Console.WriteLine($"Write({count}): {sw.ElapsedMilliseconds}");
sw.Restart();
var _ = blockChain.Count();
Console.WriteLine($"Read({_}): {sw.ElapsedMilliseconds}");
sw.Restart();
byte[] timestamp = new byte[] { 17, 104, 230, 94, 127, 183, 215, 8 };
var __ = blockChain.Count(x => ArrayEquals(x.GetBlockHeader().Time, timestamp));
Console.WriteLine($"Search({_}): {sw.ElapsedMilliseconds}");
sw.Restart();
Console.WriteLine($"FileSize f1: {new FileInfo(file).Length}");
Console.WriteLine($"FileSize f2: {new FileInfo(file+".h").Length}");
}
private void HandleDailyDealEligibility(DailyDealEligibilityModel eligibility)
{
_logger.LogInformation("Received new eligibility");
var watch = Stopwatch.StartNew();
_eligibilityRepository.Create(eligibility);
var tId = $"{eligibility.GamingSystemId}-{eligibility.ProductId}-{eligibility.UserId}";
IBlockChain transaction = new BlockChain(INSESSION_TRANSACTION_NAME, tId);
IBlock lastBlock = transaction.GetLastBlock();
IBlock currentBlock = new Block(lastBlock.Index, "Daily_Deal_Created_v1", eligibility.ToJson(), watch.Elapsed, lastBlock.Hash);
transaction.Add(currentBlock);
if (transaction.IsValid())
{
var insessTransaction = new TransactionMessage.Insession(transaction);
PubishTransction(insessTransaction);
var conversion = new ConversionModel()
{
Amount = 250,
GamingSystemId = eligibility.GamingSystemId,
ProductId = eligibility.ProductId,
UserId = eligibility.UserId
};
Context.System.Scheduler.ScheduleTellOnce(TimeSpan.FromSeconds(10), Self, conversion, Self);
}
}
public void TestBlockChainNewBlock()
{
var data = Enumerable.Range(0, 256).Select(x => (byte)random.Next());
chain.Add(new Block(data.ToArray()));
Assert.AreEqual(2, chain.Items.Count);
}
public void TestBasicChaining()
{
// Check that we can plug a few blocks together.
// Block 1 from the testnet.
var b1 = GetBlock1();
Assert.True(_testNetChain.Add(b1));
// Block 2 from the testnet.
var b2 = GetBlock2();
// Let's try adding an invalid block.
var n = b2.Nonce;
try
{
b2.Nonce = 12345;
_testNetChain.Add(b2);
Assert.Fail();
}
catch (VerificationException)
{
b2.Nonce = n;
}
// Now it works because we reset the nonce.
Assert.True(_testNetChain.Add(b2));
}
public void Should_add_new_block_and_stay_valid()
{
var blockChain = new BlockChain <TestData>(2);
var data = new TestData("ABC1234", 2020);
blockChain.Add(new Block(DateTime.UtcNow, data));
blockChain.Chain.Last().Data.Should().Be.EqualTo(data);
blockChain.IsValid().Should().Be.True();
}
public static void ProcessPendingTransactions(this BlockChain blocks, string minerAddress)
{
IBlock block = new Block(blocks.LastOrDefault().Hash, blocks.PendingTransactions);
blocks.Add(block);
blocks.PendingTransactions = new List <Transaction>();
blocks.CreateTransaction(new Transaction(null, minerAddress, blocks.Reward));
}
public void Should_be_invalid_if_blocks_chain_is_corrupted()
{
var blockChain = new BlockChain <TestData>(2);
var data1 = new TestData("AAA000", 2020);
var data2 = new TestData("AAA001", 2020);
var block1 = new Block(DateTime.UtcNow, data1);
var block2 = new Block(DateTime.UtcNow, data2);
blockChain.Add(block1);
blockChain.Add(block2);
var newChain = new List <Block> {
block2, block1
};
blockChain.ForceSet(newChain);
blockChain.IsValid().Should().Be.False();
}
public void Should_mine_block_when_adding_it_and_match_the_difficulty_provided()
{
var difficulty = 3;
var blockChain = new BlockChain <TestData>(difficulty);
var block = new Block(DateTime.UtcNow, new TestData("123", 2020));
blockChain.Add(block);
block.Hash.Substring(0, difficulty).Should().Be.EqualTo("000");
}
public Chain(Block block)
{
if (block == null)
{
throw new InvalidBlockException("Блок провайдера данных не может быть равным null.");
}
var b = new Block(block.Hash, block.PreviousHash, block.TimeStamp, block.Index, block.MerkleRoot, block.CurrentTransactions);
BlockChain.Add(b);
}
public void Should_be_invalid_if_block_data_is_corrupted()
{
var blockChain = new BlockChain <TestData>(2);
var data = new TestData("ABC1234", 2020);
blockChain.Add(new Block(DateTime.UtcNow, data));
(blockChain.Chain.Last().Data as TestData).Year = 2019;
blockChain.IsValid().Should().Be.False();
}
/// <summary>
/// Получить данные из локальной цепочки.
/// </summary>
/// <param name="localChain"> Локальная цепочка блоков. </param>
protected void LoadDataFromLocalChain(Chain localChain)
{
if (localChain == null)
{
throw new InvalidBlockException("Локальная цепочка блоков не может быть равна null.");
}
foreach (var block in localChain.blockChain)
{
BlockChain.Add(block);
}
}
public Chain(List <Block> blocks)
{
if (blocks == null)
{
throw new InvalidBlockException("Список блоков провайдера данных не может быть равным null.");
}
foreach (var block in blocks)
{
var b = new Block(block.Hash, block.PreviousHash, block.TimeStamp, block.Index, block.MerkleRoot, block.CurrentTransactions);
BlockChain.Add(b);
}
}
public async Task VerifyTest()
{
if (System.IO.File.Exists(File))
{
System.IO.File.Delete(File);
}
if (System.IO.File.Exists($"{File}.h"))
{
System.IO.File.Delete($"{File}.h");
}
var blockChain = new BlockChain <TestBlockData>(File);
var data = new[] { new TestBlockData("12345678910"), new TestBlockData("12345678911230"), new TestBlockData("123455678910"), new TestBlockData("1234567891120") };
var token = new CancellationTokenSource();
token.CancelAfter(TimeSpan.FromSeconds(TimeoutInSec));
foreach (var d in data)
{
await blockChain.Add(d, token : token.Token);
}
//Check blockchain
var x = await blockChain.Verify(token.Token);
Assert.IsTrue(x, "Valid blockchain was marked invalid");
//Make blockchain invalid
MakeBlockChainInvalid();
foreach (var d in data)
{
await blockChain.Add(d, token : token.Token); //Add some random blocks
}
//Check blockchain again
x = await blockChain.Verify(token.Token);
Assert.IsFalse(x, "Invalid blockchain was marked valid");
}
public void GivenBlockChain_AppendManyNode_ShouldVerify()
{
var now = DateTimeOffset.Now;
const int max = 10;
var blockChain = new BlockChain();
List <DataBlock <TextBlock> > list = Enumerable.Range(0, max)
.Select(x => new DataBlock <TextBlock>(now, $"blockTypeV{x}", $"blockIdV{x}", new TextBlock("name", "type", "author", $"dataV{x}")))
.ToList();
blockChain.Add(list.ToArray());
blockChain.IsValid().Should().BeTrue();
}
public void TestSetBlockHash()
{
//Arrange
var txn1 = new ClaimSettlement("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
var txn2 = new ClaimSettlement("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
IBlock <ClaimSettlement> block = new Block(0, 3);
IBlockChain <ClaimSettlement> blockChain = new BlockChain <ClaimSettlement>();
//Act
block.Add(txn1);
block.Add(txn2);
blockChain.Add(block);
//Assert
Assert.AreEqual(32, block.BlockHash.Length);
}
public void AddTest()
{
if (System.IO.File.Exists(File))
{
System.IO.File.Delete(File);
}
var blockChain = new BlockChain <TestBlockData>(File);
var data = new TestBlockData("12345678910");
var token = new CancellationTokenSource();
token.CancelAfter(TimeSpan.FromSeconds(TimeoutInSec));
blockChain.Add(data, token: token.Token).Wait();
Assert.IsTrue(TestHelper.ArrayEquals(data.ToArray(), blockChain.First().GetData().ToArray()), "Block is not added to the blockchain, or could not read the blockchain");
Assert.IsTrue(blockChain.First().IsValid(blockChain.First().GetBlockHeader().HashPrevBlock, blockChain.GetHashingAlgorithm()), "Added block is not valid");
}
private void ReplaceLocalChainFromGlobalChain(Chain localChain, Chain globalChain)
{
if (globalChain == null || localChain == null)
{
throw new InvalidBlockException("Глобальная цепочка блоков не может быть равна null.");
}
var countNewBlocks = globalChain.Length - localChain.Length;
// blockSubscriber.Clear();
var newBlocks = globalChain.BlockChain.AsEnumerable().Reverse().Take(countNewBlocks).ToList();
foreach (var block in newBlocks)
{
BlockChain.Add(block);
}
}
static void Main(string[] args)
{
var blockchain = new BlockChain <StringData>(2);
Console.WriteLine("Welcome to blockchain console!");
while (true)
{
Console.WriteLine("Write new block value: ");
var value = Console.ReadLine();
blockchain.Add(new Block(DateTime.Now, new StringData(value)));
Console.WriteLine("Block added!");
Console.WriteLine($"Blockchain is {(blockchain.IsValid() ? "valid" : "invalid")}");
Console.WriteLine(JsonConvert.SerializeObject(blockchain.Chain, Formatting.Indented));
}
}
static void Main(string[] args)
{
Random rnd = new Random(DateTime.UtcNow.Millisecond);
IBlock genesis = new Block(new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00 });
byte[] difficulty = new byte[] { 0x00, 0x00 };
BlockChain chain = new BlockChain(difficulty, genesis);
for (int i = 0; i < 200; i++)
{
var data = Enumerable.Range(0, 2256).Select(p => (byte)rnd.Next());
chain.Add(new Block(data.ToArray()));
Console.WriteLine(chain.LastOrDefault()?.ToString());
Console.WriteLine($"Chain is valid: {chain.IsValid()}");
}
Console.ReadLine();
}
public void GivenBlockChain_WhenSerialized_ShouldRoundTrip()
{
var blockChain = new BlockChain();
var block1 = new DataBlock <TextBlock>(DateTime.Now, "blockTypeV1", "blockIdV1", new TextBlock("name", "type", "author", "dataV1"));
blockChain.Add(block1);
blockChain.IsValid().Should().BeTrue();
string blockChainHash = blockChain.ToMerkleTree().BuildTree().ToString();
string json = blockChain.ToJson();
BlockChain result = json.ToBlockChain();
result.Blocks.Count.Should().Be(blockChain.Blocks.Count);
blockChain.IsValid().Should().BeTrue();
string resultChainHash = result.ToMerkleTree().BuildTree().ToString();
blockChainHash.Should().Be(resultChainHash);
}
public void TestUnconnectedBlocks()
{
var b1 = _unitTestParams.GenesisBlock.CreateNextBlock(_coinbaseTo);
var b2 = b1.CreateNextBlock(_coinbaseTo);
var b3 = b2.CreateNextBlock(_coinbaseTo);
// Connected.
Assert.True(_chain.Add(b1));
// Unconnected but stored. The head of the chain is still b1.
Assert.False(_chain.Add(b3));
Assert.AreEqual(_chain.ChainHead.Header, b1.CloneAsHeader());
// Add in the middle block.
Assert.True(_chain.Add(b2));
Assert.AreEqual(_chain.ChainHead.Header, b3.CloneAsHeader());
}
public void GivenBlockChain_AppendManyNode_ShouldVerify()
{
var now = DateTime.Now;
const int max = 10;
var principleSignature = new PrincipleSignature("issuer", "audience", TimeSpan.FromMinutes(1), new RsaPublicPrivateKey());
var blockChain = new BlockChain();
List <DataBlock <TextBlock> > list = Enumerable.Range(0, max)
.Select(x => new DataBlock <TextBlock>(now, $"blockTypeV{x}", $"blockIdV{x}", new TextBlock("name", "type", "author", $"dataV{x}")).WithSignature(principleSignature))
.ToList();
blockChain.Add(list.ToArray());
blockChain.IsValid().Should().BeTrue();
IPrincipleSignatureContainer keyContainer = new PrincipleSignatureContainer()
{
principleSignature,
};
blockChain.Validate(_workContext, keyContainer);
}
public void GivenBlockChain_AppendManyNode_ShouldVerify()
{
var now = DateTime.Now;
const int max = 10;
var blockChain = new BlockChain();
List <DataBlock <TextBlock> > list = Enumerable.Range(0, max)
.Select(x => new DataBlock <TextBlock>(now, $"blockTypeV{x}", $"blockIdV{x}", new TextBlock("name", "type", "author", $"dataV{x}")))
.ToList();
blockChain.Add(list.ToArray());
blockChain.IsValid().Should().BeTrue();
string blockChainHash = blockChain.ToMerkleTree().BuildTree().ToString();
string json = blockChain.ToJson();
BlockChain result = json.ToBlockChain();
blockChain.IsValid().Should().BeTrue();
string resultChainHash = result.ToMerkleTree().BuildTree().ToString();
blockChainHash.Should().Be(resultChainHash);
}