public async Task ReorgChain_FailsFullValidation_Reconnect_OldChain_FromSecondMiner_DisconnectedAsync()
{
using (var builder = NodeBuilder.Create(this))
{
var noValidationRulesNetwork = new BitcoinRegTestNoValidationRules();
var minerA = builder.CreateStratisPowNode(this.powNetwork, "cmfr-3-minerA").WithDummyWallet().Start();
var syncer = builder.CreateStratisPowNode(this.powNetwork, "cmfr-3-syncer").Start();
var minerB = builder.CreateStratisPowNode(noValidationRulesNetwork, "cmfr-3-minerB").NoValidation().WithDummyWallet().Start();
// MinerA mines 5 blocks
TestHelper.MineBlocks(minerA, 5);
// MinerB and Syncer syncs with MinerA
TestHelper.ConnectAndSync(minerB, minerA);
TestHelper.ConnectAndSync(syncer, minerA);
// Disconnect minerB from miner A
TestHelper.Disconnect(minerB, minerA);
TestHelper.WaitLoop(() => !TestHelper.IsNodeConnected(minerB));
// Miner A continues to mine to height 9
TestHelper.MineBlocks(minerA, 4);
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 9);
TestHelper.WaitLoop(() => minerB.FullNode.ConsensusManager().Tip.Height == 5);
TestHelper.WaitLoop(() => syncer.FullNode.ConsensusManager().Tip.Height == 9);
// Disconnect syncer from minerA
TestHelper.Disconnect(syncer, minerA);
TestHelper.WaitLoop(() => !TestHelper.IsNodeConnected(minerA));
// MinerB mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
await TestHelper.BuildBlocks.OnNode(minerB).Amount(5).Invalid(8, (coreNode, block) => BlockBuilder.InvalidCoinbaseReward(coreNode, block)).BuildAsync();
// Reconnect syncer to minerB causing the following to happen:
// Reorg from blocks 9 to 5.
// Connect blocks 5 to 10
// Block 8 fails.
// Reorg from 7 to 5
// Reconnect blocks 6 to 9
TestHelper.ConnectNoCheck(syncer, minerB);
TestHelper.AreNodesSynced(minerA, syncer);
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 9);
TestHelper.WaitLoop(() => minerB.FullNode.ConsensusManager().Tip.Height == 10);
TestHelper.WaitLoop(() => syncer.FullNode.ConsensusManager().Tip.Height == 9);
}
}
public async Task ReorgChain_FailsFullValidation_ChainHasBlocksAndHeadersOnly_NodesDisconnectedAsync()
{
using (var builder = NodeBuilder.Create(this))
{
var noValidationRulesNetwork = new BitcoinRegTestNoValidationRules();
var minerA = builder.CreateStratisPowNode(this.powNetwork, "cmfr-6-minerA").WithDummyWallet().Start();
var minerB = builder.CreateStratisPowNode(this.powNetwork, "cmfr-6-minerB").WithDummyWallet().Start();
var minerC = builder.CreateStratisPowNode(noValidationRulesNetwork, "cmfr-6-minerC").NoValidation().WithDummyWallet().Start();
// Mine 10 blocks with minerA. We cannot use a premade chain as it adversely affects the max tip age calculation, causing sporadic sync errors.
TestHelper.MineBlocks(minerA, 10);
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 10);
// MinerB and MinerC syncs with MinerA
TestHelper.ConnectAndSync(minerA, minerB, minerC);
// Disconnect MinerC from MinerA
TestHelper.Disconnect(minerA, minerC);
// MinerA continues to mine to height 14
TestHelper.MineBlocks(minerA, 4);
TestHelper.WaitLoopMessage(() => { return(minerA.FullNode.ConsensusManager().Tip.Height == 14, minerA.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerB.FullNode.ConsensusManager().Tip.Height == 14, minerB.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerC.FullNode.ConsensusManager().Tip.Height == 10, minerC.FullNode.ConsensusManager().Tip.Height.ToString()); });
// MinerB continues to mine to block 13 without block propogation
TestHelper.DisableBlockPropagation(minerB, minerA);
TestHelper.MineBlocks(minerB, 4);
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerA, 14));
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerB, 18));
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerC, 10));
// MinerB mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
await TestHelper.BuildBlocks.OnNode(minerC).Amount(5).Invalid(13, (coreNode, block) => BlockBuilder.InvalidCoinbaseReward(coreNode, block)).BuildAsync();
// Reconnect MinerA to MinerC.
TestHelper.ConnectNoCheck(minerA, minerC);
// MinerC should be disconnected from MinerA
TestHelper.WaitLoop(() => !TestHelper.IsNodeConnectedTo(minerA, minerC));
// This will cause the reorg chain to fail at block 8 and roll back any changes.
TestHelper.WaitLoopMessage(() => { return(minerA.FullNode.ConsensusManager().Tip.Height == 14, minerA.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerB.FullNode.ConsensusManager().Tip.Height == 18, minerB.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerC.FullNode.ConsensusManager().Tip.Height == 15, minerC.FullNode.ConsensusManager().Tip.Height.ToString()); });
}
}
public async Task ReorgChain_FailsFullValidation_Reconnect_OldChain_Nodes_ConnectedAsync()
{
using (var builder = NodeBuilder.Create(this))
{
var bitcoinNoValidationRulesNetwork = new BitcoinRegTestNoValidationRules();
var minerA = builder.CreateStratisPowNode(this.powNetwork, "cmfr-1-minerA").WithDummyWallet().WithReadyBlockchainData(ReadyBlockchain.BitcoinRegTest10Miner);
var minerB = builder.CreateStratisPowNode(bitcoinNoValidationRulesNetwork, "cmfr-1-minerB").NoValidation().WithDummyWallet().Start();
ChainedHeader minerBChainTip = null;
bool interceptorsEnabled = false;
bool minerA_Disconnected_ItsOwnChain_ToConnectTo_MinerBs_LongerChain = false;
bool minerA_IsConnecting_To_MinerBChain = false;
bool minerA_Disconnected_MinerBsChain = false;
bool minerA_Reconnected_Its_OwnChain = false;
// Configure the interceptor to intercept when Miner A connects Miner B's chain.
void interceptorConnect(ChainedHeaderBlock chainedHeaderBlock)
{
if (!interceptorsEnabled)
{
return;
}
if (!minerA_IsConnecting_To_MinerBChain)
{
if (chainedHeaderBlock.ChainedHeader.Height == 12)
{
minerA_IsConnecting_To_MinerBChain = minerA.FullNode.ConsensusManager().Tip.HashBlock == minerBChainTip.GetAncestor(12).HashBlock;
}
return;
}
if (!minerA_Reconnected_Its_OwnChain)
{
if (chainedHeaderBlock.ChainedHeader.Height == 14)
{
minerA_Reconnected_Its_OwnChain = true;
}
return;
}
}
// Configure the interceptor to intercept when Miner A disconnects Miner B's chain after the reorg.
void interceptorDisconnect(ChainedHeaderBlock chainedHeaderBlock)
{
if (!interceptorsEnabled)
{
return;
}
if (!minerA_Disconnected_ItsOwnChain_ToConnectTo_MinerBs_LongerChain)
{
if (minerA.FullNode.ConsensusManager().Tip.Height == 10)
{
minerA_Disconnected_ItsOwnChain_ToConnectTo_MinerBs_LongerChain = true;
}
return;
}
if (!minerA_Disconnected_MinerBsChain)
{
if (minerA.FullNode.ConsensusManager().Tip.Height == 10)
{
minerA_Disconnected_MinerBsChain = true;
}
return;
}
}
minerA.Start();
minerA.SetConnectInterceptor(interceptorConnect);
minerA.SetDisconnectInterceptor(interceptorDisconnect);
// Miner B syncs with Miner A
TestHelper.ConnectAndSync(minerB, minerA);
// Disable Miner A from sending blocks to Miner B
TestHelper.DisableBlockPropagation(minerA, minerB);
// Miner A continues to mine to height 14
TestHelper.MineBlocks(minerA, 4);
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 14);
Assert.Equal(10, minerB.FullNode.ConsensusManager().Tip.Height);
// Enable the interceptors so that they are active during the reorg.
interceptorsEnabled = true;
// Miner B mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
minerBChainTip = await TestHelper.BuildBlocks.OnNode(minerB).Amount(5).Invalid(13, (coreNode, block) => BlockBuilder.InvalidCoinbaseReward(coreNode, block)).BuildAsync();
Assert.Equal(15, minerBChainTip.Height);
Assert.Equal(15, minerB.FullNode.ConsensusManager().Tip.Height);
// Wait until Miner A disconnected its own chain so that it can connect to
// Miner B's longer chain.
TestHelper.WaitLoop(() => minerA_Disconnected_ItsOwnChain_ToConnectTo_MinerBs_LongerChain);
// Wait until Miner A has connected Miner B's chain (but failed)
TestHelper.WaitLoop(() => minerA_IsConnecting_To_MinerBChain);
// Wait until Miner A has disconnected Miner B's invalid chain.
TestHelper.WaitLoop(() => minerA_Disconnected_MinerBsChain);
// Wait until Miner A has reconnected its own chain.
TestHelper.WaitLoop(() => minerA_Reconnected_Its_OwnChain);
}
}
public void ReorgChain_FailsFullValidation_ChainHasBlocksAndHeadersOnly_NodesDisconnected()
{
using (var builder = NodeBuilder.Create(this))
{
var noValidationRulesNetwork = new BitcoinRegTestNoValidationRules();
var minerA = builder.CreateStratisPowNode(this.powNetwork).WithDummyWallet().Start();
var minerB = builder.CreateStratisPowNode(this.powNetwork).WithDummyWallet().Start();
var minerC = builder.CreateStratisPowNode(noValidationRulesNetwork).NoValidation().WithDummyWallet().Start();
// MinerA mines 5 blocks
TestHelper.MineBlocks(minerA, 5);
// MinerB and MinerC syncs with MinerA
TestHelper.ConnectAndSync(minerA, minerB, minerC);
// Disconnect MinerC from MinerA
TestHelper.Disconnect(minerA, minerC);
// MinerA continues to mine to height 9
TestHelper.MineBlocks(minerA, 4);
TestHelper.WaitLoopMessage(() => { return(minerA.FullNode.ConsensusManager().Tip.Height == 9, minerA.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerB.FullNode.ConsensusManager().Tip.Height == 9, minerB.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerC.FullNode.ConsensusManager().Tip.Height == 5, minerC.FullNode.ConsensusManager().Tip.Height.ToString()); });
// MinerB continues to mine to block 13 without block propogation
TestHelper.DisableBlockPropagation(minerB, minerA);
TestHelper.MineBlocks(minerB, 4);
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerA, 9));
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerB, 13));
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerC, 5));
// MinerB mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
TestHelper.BuildBlocks.OnNode(minerC).Amount(5).Invalid(8, (coreNode, block) => BlockBuilder.InvalidCoinbaseReward(coreNode, block)).BuildAsync();
// Reconnect MinerA to MinerC.
TestHelper.Connect(minerA, minerC);
// MinerC should be disconnected from MinerA
TestHelper.WaitLoop(() => !TestHelper.IsNodeConnectedTo(minerA, minerC));
// This will cause the reorg chain to fail at block 8 and roll back any changes.
TestHelper.WaitLoopMessage(() => { return(minerA.FullNode.ConsensusManager().Tip.Height == 9, minerA.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerB.FullNode.ConsensusManager().Tip.Height == 13, minerB.FullNode.ConsensusManager().Tip.Height.ToString()); });
TestHelper.WaitLoopMessage(() => { return(minerC.FullNode.ConsensusManager().Tip.Height == 10, minerC.FullNode.ConsensusManager().Tip.Height.ToString()); });
}
}
public void ReorgChain_FailsFullValidation_Reconnect_OldChain_Nodes_Connected()
{
using (var builder = NodeBuilder.Create(this))
{
var bitcoinNoValidationRulesNetwork = new BitcoinRegTestNoValidationRules();
var minerA = builder.CreateStratisPowNode(this.powNetwork).WithDummyWallet().Start();
var minerB = builder.CreateStratisPowNode(bitcoinNoValidationRulesNetwork).NoValidation().WithDummyWallet().Start();
// MinerA mines 5 blocks
TestHelper.MineBlocks(minerA, 5);
// MinerB syncs with MinerA
TestHelper.ConnectAndSync(minerB, minerA);
// Disable syncer from sending blocks to miner B
TestHelper.DisableBlockPropagation(minerA, minerB);
// Miner A continues to mine to height 9
TestHelper.MineBlocks(minerA, 4);
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 9);
// MinerB mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
TestHelper.BuildBlocks.OnNode(minerB).Amount(5).Invalid(8, (coreNode, block) => BlockBuilder.InvalidCoinbaseReward(coreNode, block)).BuildAsync();
// On mining the following will happen:
// Reorg from blocks 9 to 5.
// Connect blocks 5 to 10
// Block 8 fails.
// Reorg from 7 to 5
// Reconnect blocks 6 to 9
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 9);
TestHelper.WaitLoop(() => minerB.FullNode.ConsensusManager().Tip.Height == 10);
}
}
public async Task ReorgChain_AfterInitialRewind_ChainA_Extension_MinerC_DisconnectsAsync()
{
using (var builder = NodeBuilder.Create(this))
{
var minerA = builder.CreateStratisPowNode(new BitcoinRegTest(), "cmi-1-minerA").WithDummyWallet();
var minerB = builder.CreateStratisPowNode(new BitcoinRegTestNoValidationRules(), "cmi-1-minerB").NoValidation().WithDummyWallet();
var syncer = builder.CreateStratisPowNode(new BitcoinRegTest(), "cmi-1-syncer").WithDummyWallet();
bool minerADisconnectedFromSyncer = false;
// Configure the interceptor to disconnect a node after a certain block has been disconnected (rewound).
void interceptor(ChainedHeaderBlock chainedHeaderBlock)
{
if (minerADisconnectedFromSyncer)
{
return;
}
if (chainedHeaderBlock.ChainedHeader.Previous.Height == 10)
{
// Ensure that minerA's tip has rewound to 10.
TestBase.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerA, 10));
TestHelper.Disconnect(minerA, syncer);
minerADisconnectedFromSyncer = true;
return;
}
}
// Start minerA and mine 10 blocks. We cannot use a premade chain as it adversely affects the max tip age calculation, causing sporadic sync errors.
minerA.Start();
TestHelper.MineBlocks(minerA, 10);
TestBase.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 10);
// Start the nodes.
minerB.Start();
syncer.Start();
minerA.SetDisconnectInterceptor(interceptor);
// minerB and syncer syncs with minerA.
TestHelper.ConnectAndSync(minerA, minerB, syncer);
// Disconnect minerB from miner so that it can mine on its own and create a fork.
TestHelper.Disconnect(minerA, minerB);
// MinerA continues to mine to height 14.
TestHelper.MineBlocks(minerA, 4);
TestBase.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 14);
TestBase.WaitLoop(() => minerB.FullNode.ConsensusManager().Tip.Height == 10);
TestBase.WaitLoop(() => syncer.FullNode.ConsensusManager().Tip.Height == 14);
// minerB mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
Assert.False(TestHelper.IsNodeConnected(minerB));
await TestHelper.BuildBlocks.OnNode(minerB).Amount(5).Invalid(13, (node, block) => BlockBuilder.InvalidCoinbaseReward(node, block)).BuildAsync();
// Reconnect minerA to minerB.
TestHelper.ConnectNoCheck(minerA, minerB);
// minerB should be disconnected from minerA.
TestBase.WaitLoop(() => !TestHelper.IsNodeConnectedTo(minerA, minerB));
// syncer should be disconnected from minerA (via interceptor).
TestBase.WaitLoop(() => !TestHelper.IsNodeConnectedTo(minerA, syncer));
// The reorg will fail at block 8 and roll back any changes.
TestBase.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerA, 14));
TestBase.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerB, 15));
TestBase.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(syncer, 14));
}
}
public void ReorgChain_AfterInitialRewind_ChainA_Extension_MinerC_Disconnects()
{
using (var builder = NodeBuilder.Create(this))
{
var network = new BitcoinRegTest();
var minerA = builder.CreateStratisPowNode(network).WithDummyWallet();
var minerB = builder.CreateStratisPowNode(network).NoValidation().WithDummyWallet();
var syncer = builder.CreateStratisPowNode(network).WithDummyWallet();
// Configure the interceptor to disconnect a node after a certain block has been disconnected (rewound).
bool interceptor(ChainedHeaderBlock chainedHeaderBlock)
{
if (chainedHeaderBlock.ChainedHeader.Previous.Height == 5)
{
// Ensure that minerA's tip has rewound to 5.
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerA, 5));
TestHelper.Disconnect(minerA, syncer);
return(true);
}
return(false);
}
minerA.BlockDisconnectInterceptor(interceptor);
// Start the nodes.
minerA.Start();
minerB.Start();
syncer.Start();
// MinerA mines 5 blocks.
TestHelper.MineBlocks(minerA, 5);
// minerB and syncer syncs with minerA.
TestHelper.ConnectAndSync(minerA, minerB, syncer);
// Disconnect minerB from miner so that it can mine on its own and create a fork.
TestHelper.Disconnect(minerA, minerB);
// MinerA continues to mine to height 9.
TestHelper.MineBlocks(minerA, 4);
TestHelper.WaitLoop(() => minerA.FullNode.ConsensusManager().Tip.Height == 9);
TestHelper.WaitLoop(() => minerB.FullNode.ConsensusManager().Tip.Height == 5);
TestHelper.WaitLoop(() => syncer.FullNode.ConsensusManager().Tip.Height == 9);
// minerB mines 5 more blocks:
// Block 6,7,9,10 = valid
// Block 8 = invalid
Assert.False(TestHelper.IsNodeConnected(minerB));
TestHelper.BuildBlocks.OnNode(minerB).Amount(5).Invalid(8, (node, block) => BlockBuilder.InvalidCoinbaseReward(node, block)).BuildAsync();
// Reconnect minerA to minerB.
TestHelper.Connect(minerA, minerB);
// minerB should be disconnected from minerA.
TestHelper.WaitLoop(() => !TestHelper.IsNodeConnectedTo(minerA, minerB));
// syncer should be disconnected from minerA (via interceptor).
TestHelper.WaitLoop(() => !TestHelper.IsNodeConnectedTo(minerA, syncer));
// The reorg will fail at block 8 and roll back any changes.
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerA, 9));
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(minerB, 10));
TestHelper.WaitLoop(() => TestHelper.IsNodeSyncedAtHeight(syncer, 9));
}
}