public async Task NodeIsSynced_PeerSendsABadBlockAndPeerIsWhitelisted_ThePeerIsNotBanned_Async()
{
string dataDir = Path.Combine("TestData", nameof(PeerBanningTest), nameof(this.NodeIsSynced_PeerSendsABadBlockAndPeerIsWhitelisted_ThePeerIsNotBanned_Async));
Directory.CreateDirectory(dataDir);
TestChainContext context = await TestChainFactory.CreateAsync(Network.PurpleRegTest, dataDir);
var peer = new IPEndPoint(IPAddress.Parse("1.2.3.4"), context.Network.DefaultPort);
var connectionManagerBehavior = new ConnectionManagerBehavior(false, context.ConnectionManager, context.LoggerFactory)
{
Whitelisted = true
};
using (var node = new NetworkPeer(context.DateTimeProvider, context.LoggerFactory))
{
node.Behaviors.Add(connectionManagerBehavior);
context.MockReadOnlyNodesCollection.Setup(s => s.FindByEndpoint(It.IsAny <IPEndPoint>())).Returns(node);
var blocks = await TestChainFactory.MineBlocksAsync(context, 2, new Key().ScriptPubKey);
// create a new block that breaks consensus.
var block = blocks.First();
block.Header.HashPrevBlock = context.Chain.Tip.HashBlock;
await context.Consensus.AcceptBlockAsync(new BlockValidationContext { Block = block, Peer = peer });
Assert.False(context.PeerBanning.IsBanned(peer));
}
}
/// <summary>
/// Creates test chain with a consensus loop.
/// </summary>
public static async Task <TestChainContext> CreateAsync(Network network, string dataDir)
{
var testChainContext = new TestChainContext()
{
Network = network
};
testChainContext.NodeSettings = new NodeSettings(network.Name, network).LoadArguments(new string[] { $"-datadir={dataDir}" });
if (dataDir != null)
{
testChainContext.NodeSettings.DataDir = dataDir;
}
testChainContext.LoggerFactory = new ExtendedLoggerFactory();
testChainContext.LoggerFactory.AddConsoleWithFilters();
testChainContext.DateTimeProvider = DateTimeProvider.Default;
network.Consensus.Options = new PowConsensusOptions();
ConsensusSettings consensusSettings = new ConsensusSettings(testChainContext.NodeSettings, testChainContext.LoggerFactory);
testChainContext.Checkpoints = new Checkpoints();
PowConsensusValidator consensusValidator = new PowConsensusValidator(network, testChainContext.Checkpoints, testChainContext.DateTimeProvider, testChainContext.LoggerFactory);
testChainContext.Chain = new ConcurrentChain(network);
CachedCoinView cachedCoinView = new CachedCoinView(new InMemoryCoinView(testChainContext.Chain.Tip.HashBlock), DateTimeProvider.Default, testChainContext.LoggerFactory);
testChainContext.MockConnectionManager = new Moq.Mock <IConnectionManager>();
testChainContext.MockReadOnlyNodesCollection = new Moq.Mock <IReadOnlyNetworkPeerCollection>();
testChainContext.MockConnectionManager.Setup(s => s.ConnectedPeers).Returns(testChainContext.MockReadOnlyNodesCollection.Object);
testChainContext.MockConnectionManager.Setup(s => s.NodeSettings).Returns(testChainContext.NodeSettings);
testChainContext.ConnectionManager = testChainContext.MockConnectionManager.Object;
LookaheadBlockPuller blockPuller = new LookaheadBlockPuller(testChainContext.Chain, testChainContext.ConnectionManager, testChainContext.LoggerFactory);
testChainContext.PeerBanning = new PeerBanning(testChainContext.ConnectionManager, testChainContext.LoggerFactory, testChainContext.DateTimeProvider, testChainContext.NodeSettings);
NodeDeployments deployments = new NodeDeployments(testChainContext.Network, testChainContext.Chain);
ConsensusRules consensusRules = new ConsensusRules(testChainContext.Network, testChainContext.LoggerFactory, testChainContext.DateTimeProvider, testChainContext.Chain, deployments, consensusSettings, testChainContext.Checkpoints).Register(new FullNodeBuilderConsensusExtension.CoreConsensusRules());
testChainContext.Consensus = new ConsensusLoop(new AsyncLoopFactory(testChainContext.LoggerFactory), consensusValidator, new NodeLifetime(), testChainContext.Chain, cachedCoinView, blockPuller, new NodeDeployments(network, testChainContext.Chain), testChainContext.LoggerFactory, new ChainState(new InvalidBlockHashStore(testChainContext.DateTimeProvider)), testChainContext.ConnectionManager, testChainContext.DateTimeProvider, new Signals.Signals(), consensusSettings, testChainContext.NodeSettings, testChainContext.PeerBanning, consensusRules);
await testChainContext.Consensus.StartAsync();
return(testChainContext);
}
/// <summary>
/// Mine new blocks in to the consensus database and the chain.
/// </summary>
public static async Task <List <Block> > MineBlocksAsync(TestChainContext testChainContext, int count, Script scriptPubKey)
{
BlockPolicyEstimator blockPolicyEstimator = new BlockPolicyEstimator(new MempoolSettings(testChainContext.NodeSettings), testChainContext.LoggerFactory, testChainContext.NodeSettings);
TxMempool mempool = new TxMempool(testChainContext.DateTimeProvider, blockPolicyEstimator, testChainContext.LoggerFactory, testChainContext.NodeSettings);
MempoolSchedulerLock mempoolLock = new MempoolSchedulerLock();
// Simple block creation, nothing special yet:
List <Block> blocks = new List <Block>();
for (int i = 0; i < count; ++i)
{
PowBlockAssembler blockAssembler = CreatePowBlockAssembler(testChainContext.Network, testChainContext.Consensus, testChainContext.Chain, mempoolLock, mempool, testChainContext.DateTimeProvider, testChainContext.LoggerFactory as LoggerFactory);
BlockTemplate newBlock = blockAssembler.CreateNewBlock(scriptPubKey);
int nHeight = testChainContext.Chain.Tip.Height + 1; // Height first in coinbase required for block.version=2
Transaction txCoinbase = newBlock.Block.Transactions[0];
txCoinbase.Inputs[0] = TxIn.CreateCoinbase(nHeight);
newBlock.Block.UpdateMerkleRoot();
var maxTries = int.MaxValue;
while (maxTries > 0 && !newBlock.Block.CheckProofOfWork(testChainContext.Network.Consensus))
{
++newBlock.Block.Header.Nonce;
--maxTries;
}
if (maxTries == 0)
{
throw new XunitException("Test failed no blocks found");
}
var context = new BlockValidationContext {
Block = newBlock.Block
};
await testChainContext.Consensus.AcceptBlockAsync(context);
Assert.Null(context.Error);
blocks.Add(newBlock.Block);
}
return(blocks);
}
public async Task NodeIsSynced_PeerSendsABadBlockAndPeerDiconnected_ThePeerGetsBanned_Async()
{
string dataDir = Path.Combine("TestData", nameof(PeerBanningTest), nameof(this.NodeIsSynced_PeerSendsABadBlockAndPeerDiconnected_ThePeerGetsBanned_Async));
Directory.CreateDirectory(dataDir);
TestChainContext context = await TestChainFactory.CreateAsync(Network.PurpleRegTest, dataDir);
var peer = new IPEndPoint(IPAddress.Parse("1.2.3.4"), context.Network.DefaultPort);
context.MockReadOnlyNodesCollection.Setup(s => s.FindByEndpoint(It.IsAny <IPEndPoint>())).Returns((NetworkPeer)null);
var blocks = await TestChainFactory.MineBlocksAsync(context, 2, new Key().ScriptPubKey);
var block = blocks.First();
block.Header.HashPrevBlock = context.Chain.Tip.HashBlock;
await context.Consensus.AcceptBlockAsync(new BlockValidationContext { Block = block, Peer = peer });
Assert.True(context.PeerBanning.IsBanned(peer));
}