public void Can_resync_if_missed_a_block()
{
_remoteBlockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(SyncBatchSize.Max).TestObject;
ISyncPeer peer = new SyncPeerMock(_remoteBlockTree);
SemaphoreSlim semaphore = new SemaphoreSlim(0);
_synchronizer.SyncEvent += (sender, args) =>
{
if (args.SyncEvent == SyncEvent.Completed || args.SyncEvent == SyncEvent.Failed)
{
semaphore.Release(1);
}
};
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(peer);
BlockTreeBuilder.ExtendTree(_remoteBlockTree, SyncBatchSize.Max * 2);
_syncServer.AddNewBlock(_remoteBlockTree.RetrieveHeadBlock(), peer);
semaphore.Wait(_standardTimeoutUnit);
semaphore.Wait(_standardTimeoutUnit);
Assert.AreEqual(SyncBatchSize.Max * 2 - 1, (int)_blockTree.BestSuggestedHeader.Number);
}
public void Can_add_new_block()
{
_remoteBlockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(SyncBatchSize.Max).TestObject;
ISyncPeer peer = new SyncPeerMock(_remoteBlockTree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_synchronizer.SyncEvent += (sender, args) =>
{
if (args.SyncEvent == SyncEvent.Completed || args.SyncEvent == SyncEvent.Failed)
{
resetEvent.Set();
}
};
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(peer);
Block block = Build.A.Block.WithParent(_remoteBlockTree.Head).WithTotalDifficulty((_remoteBlockTree.Head.TotalDifficulty ?? 0) + 1).TestObject;
_syncServer.AddNewBlock(block, peer);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(SyncBatchSize.Max - 1, (int)_blockTree.BestSuggestedHeader.Number);
}
public void Can_sync_on_split_of_length_6()
{
BlockTree miner1Tree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISyncPeer miner1 = new SyncPeerMock(miner1Tree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_synchronizer.SyncEvent += (sender, args) =>
{
if (args.SyncEvent == SyncEvent.Completed || args.SyncEvent == SyncEvent.Failed)
{
resetEvent.Set();
}
};
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(miner1);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(miner1Tree.BestSuggestedHeader.Hash, _blockTree.BestSuggestedHeader.Hash, "client agrees with miner before split");
miner1Tree.AddBranch(7, 0, 1);
Assert.AreNotEqual(miner1Tree.BestSuggestedHeader.Hash, _blockTree.BestSuggestedHeader.Hash, "client does not agree with miner after split");
resetEvent.Reset();
_syncServer.AddNewBlock(miner1Tree.RetrieveHeadBlock(), miner1);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(miner1Tree.BestSuggestedHeader.Hash, _blockTree.BestSuggestedHeader.Hash, "client agrees with miner after split");
}
public void Will_inform_connecting_peer_about_the_alternative_branch_with_same_difficulty()
{
if (_synchronizerType == SynchronizerType.Fast)
{
return;
}
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(2);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddBlocksUpTo(2, 0, 1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedBlockHasNumber(2)
.AfterPeerIsAdded(peerB)
.WaitUntilInitialized()
.Stop();
Assert.AreNotEqual(peerB.HeadBlock.Hash, peerA.HeadBlock.Hash);
Block block = null;
SpinWait.SpinUntil(() =>
{
bool receivedBlock = peerB.ReceivedBlocks.TryPeek(out block);
return(receivedBlock && block.Hash == peerA.HeadBlock.Hash);
}, WaitTime);
Assert.AreEqual(block?.Header.Hash, peerA.HeadBlock.Hash);
}
public void Can_stop()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(SyncBatchSize.Max);
When.Syncing
.Stop();
}
public void Can_sync_with_one_peer_straight()
{
SyncPeerMock peerA = new SyncPeerMock("A");
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggested.BlockIsSameAsGenesis().Stop();
}
public void Syncs_with_empty_peer()
{
_remoteBlockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(1).TestObject;
ISyncPeer peer = new SyncPeerMock(_remoteBlockTree);
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(peer);
Assert.AreEqual(0, (int)_blockTree.BestSuggestedHeader.Number);
}
public void Can_sync_with_one_peer_straight_and_extend_chain()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(3);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader).Stop();
}
public void Can_sync_more_than_a_batch()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(SyncBatchSize.Max * 3);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader).Stop();
}
public void Will_remove_peer_when_init_fails()
{
SyncPeerMock peerA = new SyncPeerMock("A", true, true);
peerA.AddBlocksUpTo(1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.WaitAMoment()
.PeerCountIs(0).Stop();
}
public void Can_extend_chain_by_one_on_block_hint_message()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.WaitUntilInitialized()
.After(() => peerA.AddBlocksUpTo(2))
.AfterHintBlockMessage(peerA.HeadBlock, peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader).Stop();
}
public void Will_not_add_same_peer_twice()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.AfterPeerIsAdded(peerA)
.WaitUntilInitialized()
.PeerCountIs(1)
.BestSuggestedBlockHasNumber(1).Stop();
}
public void Will_ignore_new_block_that_is_far_ahead()
{
// this test was designed for no sync-timer sync process
// now it checks something different
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.WaitUntilInitialized()
.After(() => peerA.AddBlocksUpTo(16))
.AfterNewBlockMessage(peerA.HeadBlock, peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader).Stop();
}
public void Syncs_when_knows_more_blocks()
{
_blockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(SyncBatchSize.Max * 2).TestObject;
_remoteBlockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(1).TestObject;
ISyncPeer peer = new SyncPeerMock(_remoteBlockTree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_synchronizer.SyncEvent += (sender, args) => { resetEvent.Set(); };
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(peer);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(SyncBatchSize.Max * 2 - 1, (int)_blockTree.BestSuggestedHeader.Number);
}
public void Can_extend_chain_by_more_than_one_on_new_block_message()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.WaitUntilInitialized()
.After(() => peerA.AddBlocksUpTo(8))
.AfterNewBlockMessage(peerA.HeadBlock, peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader).Wait().Stop();
Console.WriteLine("why?");
}
public void Can_sync_when_best_peer_is_timing_out()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(1);
SyncPeerMock badPeer = new SyncPeerMock("B", false, false, true);
badPeer.AddBlocksUpTo(20);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(badPeer)
.WaitUntilInitialized()
.AfterPeerIsAdded(peerA)
.BestSuggestedBlockHasNumber(1).Stop();
}
public void Will_not_reorganize_more_than_max_reorg_length()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(BlockDownloader.MaxReorganizationLength + 1);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddBlocksUpTo(BlockDownloader.MaxReorganizationLength + 2, 0, 1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader)
.AfterPeerIsAdded(peerB)
.BestSuggestedHeaderIs(peerA.HeadHeader).Stop();
}
public void Can_reorg_based_on_total_difficulty()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(10);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddHighDifficultyBlocksUpTo(6, 0, 1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader)
.AfterPeerIsAdded(peerB)
.BestSuggestedHeaderIs(peerB.HeadHeader).Stop();
}
public void Will_not_reorganize_on_same_chain_length()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(10);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddBlocksUpTo(10, 0, 1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader)
.AfterPeerIsAdded(peerB)
.BestSuggestedHeaderIs(peerA.HeadHeader).Stop();
}
public void Can_reorg_on_add_peer()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(SyncBatchSize.Max);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddBlocksUpTo(SyncBatchSize.Max * 2, 0, 1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.BestSuggestedHeaderIs(peerA.HeadHeader)
.AfterPeerIsAdded(peerB)
.BestSuggestedHeaderIs(peerB.HeadHeader).Stop();
}
public void Can_remove_peers()
{
SyncPeerMock peerA = new SyncPeerMock("A");
SyncPeerMock peerB = new SyncPeerMock("B");
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.AfterPeerIsAdded(peerB)
.WaitAMoment()
.PeerCountIs(2)
.AfterPeerIsRemoved(peerB)
.WaitAMoment()
.PeerCountIs(1)
.AfterPeerIsRemoved(peerA)
.WaitAMoment()
.PeerCountIs(0).Stop();
}
public void Can_reorg_on_hint_block_message()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(3);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddBlocksUpTo(3);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.AfterPeerIsAdded(peerB)
.Wait()
.After(() => peerB.AddBlocksUpTo(6))
.AfterHintBlockMessage(peerB.HeadBlock, peerB)
.BestSuggestedHeaderIs(peerB.HeadHeader).Stop();
}
public void Can_sync_on_split_of_length_1()
{
BlockTree miner1Tree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISyncPeer miner1 = new SyncPeerMock(miner1Tree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_synchronizer.SyncEvent += (sender, args) =>
{
TestContext.WriteLine(args.SyncEvent);
if (args.SyncEvent == SyncEvent.Completed || args.SyncEvent == SyncEvent.Failed)
{
resetEvent.Set();
}
};
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(miner1);
resetEvent.WaitOne(_standardTimeoutUnit);
miner1Tree.BestSuggestedHeader.Should().BeEquivalentTo(_blockTree.BestSuggestedHeader, "client agrees with miner before split");
Block splitBlock = Build.A.Block.WithParent(miner1Tree.FindParent(miner1Tree.Head, BlockTreeLookupOptions.TotalDifficultyNotNeeded)).WithDifficulty(miner1Tree.Head.Difficulty - 1).TestObject;
Block splitBlockChild = Build.A.Block.WithParent(splitBlock).TestObject;
miner1Tree.SuggestBlock(splitBlock);
miner1Tree.UpdateMainChain(splitBlock);
miner1Tree.SuggestBlock(splitBlockChild);
miner1Tree.UpdateMainChain(splitBlockChild);
splitBlockChild.Header.Should().BeEquivalentTo(miner1Tree.BestSuggestedHeader, "split as expected");
resetEvent.Reset();
_syncServer.AddNewBlock(splitBlockChild, miner1);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(miner1Tree.BestSuggestedHeader.Hash, _blockTree.BestSuggestedHeader.Hash, "client agrees with miner after split");
}
public void Can_extend_chain_on_hint_block_when_high_difficulty_low_number()
{
SyncPeerMock peerA = new SyncPeerMock("A");
peerA.AddBlocksUpTo(10);
SyncPeerMock peerB = new SyncPeerMock("B");
peerB.AddHighDifficultyBlocksUpTo(5, 0, 1);
When.Syncing
.AfterProcessingGenesis()
.AfterPeerIsAdded(peerA)
.Wait()
.AfterPeerIsAdded(peerB)
.Wait()
.After(() => peerB.AddHighDifficultyBlocksUpTo(6, 0, 1))
.AfterHintBlockMessage(peerB.HeadBlock, peerB)
.BestSuggestedHeaderIs(peerB.HeadHeader).Stop();
}
public async Task Does_not_do_full_sync_when_not_needed_with_split()
{
BlockTree minerTree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISyncPeer miner1 = new SyncPeerMock(minerTree);
AutoResetEvent resetEvent = new AutoResetEvent(false);
_synchronizer.SyncEvent += (sender, args) =>
{
if (args.SyncEvent == SyncEvent.Completed || args.SyncEvent == SyncEvent.Failed)
{
resetEvent.Set();
}
};
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(miner1);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(minerTree.BestSuggestedHeader.Hash, _blockTree.BestSuggestedHeader.Hash, "client agrees with miner before split");
Block newBlock = Build.A.Block.WithParent(minerTree.Head).TestObject;
minerTree.SuggestBlock(newBlock);
minerTree.UpdateMainChain(newBlock);
ISyncPeer miner2 = Substitute.For <ISyncPeer>();
miner2.GetHeadBlockHeader(Arg.Any <Keccak>(), Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockHeader(null, CancellationToken.None));
miner2.Node.Id.Returns(TestItem.PublicKeyB);
Assert.AreEqual(newBlock.Number, await miner2.GetHeadBlockHeader(null, Arg.Any <CancellationToken>()), "number as expected");
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(miner2);
resetEvent.WaitOne(_standardTimeoutUnit);
await miner2.Received().GetBlockHeaders(6, 1, 0, default(CancellationToken));
}
public void Retrieves_missing_blocks_in_batches()
{
_remoteBlockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(SyncBatchSize.Max * 2).TestObject;
ISyncPeer peer = new SyncPeerMock(_remoteBlockTree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_synchronizer.SyncEvent += (sender, args) =>
{
if (args.SyncEvent == SyncEvent.Completed || args.SyncEvent == SyncEvent.Failed)
{
resetEvent.Set();
}
};
_pool.Start();
_synchronizer.Start();
_pool.AddPeer(peer);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(SyncBatchSize.Max * 2 - 1, (int)_blockTree.BestSuggestedHeader.Number);
}