public void RemovePeer(ISynchronizationPeer synchronizationPeer)
{
if (_logger.IsTrace)
{
_logger.Trace($"Removing synchronization peer {synchronizationPeer.NodeId}");
}
if (!_isInitialized)
{
if (_logger.IsTrace)
{
_logger.Trace($"Synchronization is disabled, removing peer is blocked: {synchronizationPeer.NodeId}");
}
return;
}
if (!_peers.TryRemove(synchronizationPeer.NodeId, out _))
{
//possible if sync failed - we remove peer and eventually initiate disconnect, which calls remove peer again
return;
}
if (_currentSyncingPeerInfo?.Peer.NodeId.Equals(synchronizationPeer.NodeId) ?? false)
{
if (_logger.IsTrace)
{
_logger.Trace($"Requesting peer cancel with: {synchronizationPeer.NodeId}");
}
_peerSyncCancellationTokenSource?.Cancel();
}
if (_initCancelTokens.TryGetValue(synchronizationPeer.NodeId, out CancellationTokenSource tokenSource))
{
tokenSource.Cancel();
}
}
public void RemovePeer(ISynchronizationPeer synchronizationPeer)
{
if (!_peers.TryRemove(synchronizationPeer.NodeId, out var _))
{
return;
}
if (_logger.IsInfoEnabled)
{
_logger.Info($"Removing synchronization peer {synchronizationPeer.NodeId}");
}
lock (_isSyncingLock)
{
if (_isSyncing && (_currentSyncingPeer?.Peer.NodeId.Equals(synchronizationPeer.NodeId) ?? false))
{
if (_logger.IsInfoEnabled)
{
_logger.Info($"Requesting peer cancel with: {synchronizationPeer.NodeId}");
}
_syncCancellationTokenSource?.Cancel();
}
}
if (_initCancellationTokenSources.TryGetValue(synchronizationPeer.NodeId, out var tokenSource))
{
tokenSource.Cancel();
}
}
public SyncingContext AfterPeerIsAdded(ISynchronizationPeer syncPeer)
{
_peers.TryAdd(syncPeer.ClientId, syncPeer);
var task = new Task(async() => { await SyncManager.AddPeer(syncPeer); });
task.RunSynchronously();
return(this);
}
private async Task InitPeerInfo(ISynchronizationPeer peer, CancellationToken token)
{
if (_logger.IsTrace)
{
_logger.Trace($"Requesting head block info from {peer.NodeId}");
}
Task <Keccak> getHashTask = peer.GetHeadBlockHash(token);
Task <UInt256> getNumberTask = peer.GetHeadBlockNumber(token);
// Task<UInt256> getDifficultyTask = peer.GetHeadDifficulty(token);
await Task.WhenAny(Task.WhenAll(getHashTask, getNumberTask), Task.Delay(10000, token)).ContinueWith(
t =>
{
if (t.IsFaulted)
{
if (_logger.IsTrace)
{
_logger.Trace($"InitPeerInfo failed for node: {peer.NodeId}{Environment.NewLine}{t.Exception}");
}
RemovePeer(peer);
SyncEvent?.Invoke(this, new SyncEventArgs(peer, SyncStatus.InitFailed));
}
else if (t.IsCanceled)
{
RemovePeer(peer);
SyncEvent?.Invoke(this, new SyncEventArgs(peer, SyncStatus.InitCancelled));
token.ThrowIfCancellationRequested();
}
else
{
if (_logger.IsTrace)
{
_logger.Trace($"Received head block info from {peer.NodeId} with head block numer {getNumberTask.Result}");
}
SyncEvent?.Invoke(
this,
new SyncEventArgs(peer, SyncStatus.InitCompleted)
{
NodeBestBlockNumber = getNumberTask.Result,
OurBestBlockNumber = _blockTree.BestSuggested.Number
});
bool result = _peers.TryGetValue(peer.NodeId, out PeerInfo peerInfo);
if (!result)
{
_logger.Error($"Initializing PeerInfo failed for {peer.NodeId}");
throw new EthSynchronizationException($"Initializing peer info failed for {peer.NodeId.ToString()}");
}
peerInfo.NumberAvailable = getNumberTask.Result;
// peerInfo.Difficulty = getDifficultyTask.Result;
peerInfo.NumberReceived = _blockTree.BestSuggested.Number;
peerInfo.IsInitialized = true;
}
}, token);
}
public async Task AddPeer(ISynchronizationPeer synchronizationPeer)
{
if (_logger.IsTrace)
{
_logger.Trace($"Adding synchronization peer {synchronizationPeer.NodeId}");
}
if (_peers.ContainsKey(synchronizationPeer.NodeId))
{
if (_logger.IsError)
{
_logger.Error($"Sync peer already in peers collection: {synchronizationPeer.NodeId}");
}
return;
}
var peerInfo = new PeerInfo(synchronizationPeer);
_peers.TryAdd(synchronizationPeer.NodeId, peerInfo);
var tokenSource = _initCancelTokens[synchronizationPeer.NodeId] = new CancellationTokenSource();
// ReSharper disable once MethodSupportsCancellation
await InitPeerInfo(synchronizationPeer, tokenSource.Token).ContinueWith(t =>
{
_initCancelTokens.TryRemove(synchronizationPeer.NodeId, out _);
if (t.IsFaulted)
{
if (t.Exception != null && t.Exception.InnerExceptions.Any(x => x.InnerException is TimeoutException))
{
if (_logger.IsDebug)
{
_logger.Debug($"AddPeer failed due to timeout: {t.Exception.Message}");
}
}
else if (_logger.IsError)
{
_logger.Error("AddPeer failed.", t.Exception);
}
}
else if (t.IsCanceled)
{
if (_logger.IsTrace)
{
_logger.Trace($"Init peer info canceled: {synchronizationPeer.NodeId}");
}
}
else
{
CheckIfNewPeerIsBetterSyncCandidate(peerInfo);
RequestSync();
}
});
}
public void AddPeer(ISynchronizationPeer peer)
{
if (!_peers.TryAdd(peer.Node.Id, peer))
{
return;
}
if (_logger.IsTrace)
{
_logger.Trace($"Added a peer: {peer.ClientId}");
}
}
private async Task InitPeerInfo(ISynchronizationPeer peer, CancellationToken token)
{
Task <Keccak> getHashTask = peer.GetHeadBlockHash();
if (_logger.IsDebugEnabled)
{
_logger.Debug($"Requesting head block info from {peer.NodeId}");
}
Task <BigInteger> getNumberTask = peer.GetHeadBlockNumber(token);
await Task.WhenAll(getHashTask, getNumberTask).ContinueWith(
t =>
{
if (t.IsFaulted)
{
if (_logger.IsErrorEnabled)
{
if (t.Exception != null && t.Exception.InnerExceptions.Any(x => x is TimeoutException))
{
_logger.Warn($"InitPeerInfo failed for node: {peer.NodeId}. {t.Exception?.Message}");
}
else
{
_logger.Error($"InitPeerInfo failedf or node: {peer.NodeId}.", t.Exception);
}
}
SyncFailed?.Invoke(this, new SyncEventArgs(peer));
}
else if (t.IsCanceled)
{
token.ThrowIfCancellationRequested();
}
}, token);
if (_logger.IsDebugEnabled)
{
_logger.Info($"Received head block info from {peer.NodeId} with head block numer {getNumberTask.Result}");
}
bool addResult = _peers.TryAdd(peer.NodeId, new PeerInfo(peer, getNumberTask.Result)
{
NumberReceived = BlockTree.BestSuggested.Number
}); // TODO: cheating now with assumign the consistency of the chains
if (!addResult)
{
_logger.Error($"Adding {nameof(PeerInfo)} failed for {peer.NodeId}");
}
}
private void SessionDisconnected(object sender, DisconnectEventArgs e)
{
ISession session = (ISession)sender;
session.Initialized -= SessionInitialized;
session.Disconnected -= SessionDisconnected;
if (_syncPeers.ContainsKey(session.SessionId))
{
ISynchronizationPeer syncPeer = _syncPeers[session.SessionId];
_syncManager.RemovePeer(syncPeer);
_transactionPool.RemovePeer(syncPeer.Node.Id);
}
_sessions.TryRemove(session.SessionId, out session);
}
private void Notify(ISynchronizationPeer peer, Transaction transaction)
{
var timestamp = new UInt256(_timestamp.EpochSeconds);
if (_pendingTransactionThresholdValidator.IsObsolete(timestamp, transaction.Timestamp))
{
return;
}
Metrics.PendingTransactionsSent++;
peer.SendNewTransaction(transaction);
if (_logger.IsTrace)
{
_logger.Trace($"Notified {peer.Node.Id} about a transaction: {transaction.Hash}");
}
}
public async Task Does_not_do_full_sync_when_not_needed_with_split()
{
BlockTree minerTree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISynchronizationPeer miner1 = new SynchronizationPeerMock(minerTree);
AutoResetEvent resetEvent = new AutoResetEvent(false);
_manager.SyncEvent += (sender, args) =>
{
if (args.SyncStatus == SyncStatus.Completed || args.SyncStatus == SyncStatus.Failed)
{
resetEvent.Set();
}
};
_manager.Start();
Task addMiner1Task = _manager.AddPeer(miner1);
await Task.WhenAll(addMiner1Task);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(minerTree.BestSuggested.Hash, _blockTree.BestSuggested.Hash, "client agrees with miner before split");
Block newBlock = Build.A.Block.WithParent(minerTree.Head).TestObject;
minerTree.SuggestBlock(newBlock);
minerTree.UpdateMainChain(newBlock);
ISynchronizationPeer miner2 = Substitute.For <ISynchronizationPeer>();
miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockNumber(CancellationToken.None));
miner2.GetHeadBlockHash(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockHash(CancellationToken.None));
miner2.NodeId.Returns(new NodeId(TestObject.PublicKeyB));
Assert.AreEqual(newBlock.Number, await miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()), "number as expected");
Assert.AreEqual(newBlock.Hash, await miner2.GetHeadBlockHash(default(CancellationToken)), "hash as expected");
await _manager.AddPeer(miner2);
resetEvent.WaitOne(_standardTimeoutUnit);
await miner2.Received().GetBlockHeaders(6, 1, 0, default(CancellationToken));
}
public async Task AddPeer(ISynchronizationPeer synchronizationPeer)
{
if (_peers.ContainsKey(synchronizationPeer.NodeId))
{
if (_logger.IsDebugEnabled)
{
_logger.Debug($"Sync peer already in peers collection: {synchronizationPeer.NodeId}");
}
return;
}
if (_logger.IsInfoEnabled)
{
_logger.Info($"Adding synchronization peer {synchronizationPeer.NodeId}");
}
var tokenSource = _initCancellationTokenSources[synchronizationPeer.NodeId] = new CancellationTokenSource();
await InitPeerInfo(synchronizationPeer, tokenSource.Token).ContinueWith(t =>
{
_initCancellationTokenSources.TryRemove(synchronizationPeer.NodeId, out var _);
if (t.IsFaulted)
{
if (_logger.IsErrorEnabled)
{
_logger.Error("AddPeer failed.", t.Exception);
}
}
else if (t.IsCanceled)
{
if (_logger.IsWarnEnabled)
{
_logger.Warn($"Init peer info cancelled: {synchronizationPeer.NodeId}");
}
}
else
{
RunSync();
}
});
}
private void SessionDisconnected(object sender, DisconnectEventArgs e)
{
ISession session = (ISession)sender;
session.Initialized -= SessionInitialized;
session.Disconnected -= SessionDisconnected;
if (_syncPeers.ContainsKey(session.SessionId))
{
ISynchronizationPeer syncPeer = _syncPeers[session.SessionId];
_syncManager.RemovePeer(syncPeer);
_transactionPool.RemovePeer(syncPeer.Node.Id);
if (_logger.IsDebug)
{
_logger.Debug($"{session.Node.ClientId} sync peer {session} disconnected {e.DisconnectType} {e.DisconnectReason}");
}
}
_sessions.TryRemove(session.SessionId, out session);
}
public async Task Does_not_do_full_sync_when_not_needed_with_split()
{
BlockTree minerTree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISynchronizationPeer miner1 = new SynchronizationPeerMock(minerTree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_manager.SyncEvent += (sender, args) => { resetEvent.Set(); };
Task addMiner1Task = _manager.AddPeer(miner1);
await Task.WhenAll(addMiner1Task);
resetEvent.WaitOne(TimeSpan.FromSeconds(1));
Assert.AreEqual(minerTree.BestSuggested.Hash, _blockTree.BestSuggested.Hash, "client agrees with miner before split");
Block newBlock = Build.A.Block.WithParent(minerTree.Head).TestObject;
minerTree.SuggestBlock(newBlock);
minerTree.MarkAsProcessed(newBlock.Hash);
minerTree.MoveToMain(newBlock.Hash);
ISynchronizationPeer miner2 = Substitute.For <ISynchronizationPeer>();
miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockNumber(Arg.Any <CancellationToken>()));
miner2.GetHeadBlockHash(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockHash(default(CancellationToken)));
miner2.NodeId.Returns(new NodeId(TestObject.PublicKeyB));
Assert.AreEqual(newBlock.Number, await miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()), "number as expected");
Assert.AreEqual(newBlock.Hash, await miner2.GetHeadBlockHash(default(CancellationToken)), "hash as expected");
await _manager.AddPeer(miner2);
await miner2.Received().GetBlockHeaders(6, 1, 0, default(CancellationToken));
}
public SyncEventArgs(ISynchronizationPeer peer, SyncStatus status)
{
Peer = peer;
SyncStatus = status;
}
public SyncEventArgs(ISynchronizationPeer peer)
{
Peer = peer;
}
public SyncingContext AfterHintBlockMessage(Block block, ISynchronizationPeer peer)
{
SyncManager.HintBlock(block.Hash, block.Number, peer.Node.Id);
return(this);
}
public SyncingContext AfterNewBlockMessage(Block block, ISynchronizationPeer peer)
{
block.TotalDifficulty = (UInt256)(block.Difficulty * ((BigInteger)block.Number + 1));
SyncManager.AddNewBlock(block, peer.Node.Id);
return(this);
}
private async Task PeerSyncAsync(CancellationToken token, PeerInfo peerInfo)
{
bool wasCancelled = false;
ISynchronizationPeer peer = peerInfo.Peer;
BigInteger bestNumber = BlockTree.BestSuggested.Number;
const int maxLookup = 64;
int ancestorLookupLevel = 0;
bool isCommonAncestorKnown = false;
while (peerInfo.NumberAvailable > bestNumber && peerInfo.NumberReceived <= peerInfo.NumberAvailable)
{
if (ancestorLookupLevel > maxLookup)
{
throw new InvalidOperationException("Cannot find ancestor"); // TODO: remodel this after full sync test is added
}
if (token.IsCancellationRequested)
{
token.ThrowIfCancellationRequested();
}
if (!isCommonAncestorKnown)
{
// TODO: cases when many peers used for sync and one peer finished sync and then we need resync - we should start from common point and not NumberReceived that may be far in the past
_logger.Info($"Finding common ancestor for {peerInfo.Peer.NodeId}");
isCommonAncestorKnown = true;
}
BigInteger blocksLeft = peerInfo.NumberAvailable - peerInfo.NumberReceived;
// TODO: fault handling on tasks
int blocksToRequest = (int)BigInteger.Min(blocksLeft + 1, BatchSize);
if (_logger.IsDebugEnabled)
{
_logger.Debug($"Sync request to peer with {peerInfo.NumberAvailable} blocks. Got {peerInfo.NumberReceived} and asking for {blocksToRequest} more.");
}
Task <BlockHeader[]> headersTask = peer.GetBlockHeaders(peerInfo.NumberReceived, blocksToRequest, 0, token);
_currentSyncTask = headersTask;
BlockHeader[] headers = await headersTask;
if (_currentSyncTask.IsCanceled)
{
wasCancelled = true;
break;
}
if (_currentSyncTask.IsFaulted)
{
_logger.Error("Failed to retrieve headers when synchronizing", _currentSyncTask.Exception);
throw _currentSyncTask.Exception;
}
if (token.IsCancellationRequested)
{
token.ThrowIfCancellationRequested();
}
List <Keccak> hashes = new List <Keccak>();
Dictionary <Keccak, BlockHeader> headersByHash = new Dictionary <Keccak, BlockHeader>();
for (int i = 1; i < headers.Length; i++)
{
hashes.Add(headers[i].Hash);
headersByHash[headers[i].Hash] = headers[i];
}
Task <Block[]> bodiesTask = peer.GetBlocks(hashes.ToArray(), token);
_currentSyncTask = bodiesTask;
Block[] blocks = await bodiesTask;
if (_currentSyncTask.IsCanceled)
{
wasCancelled = true;
break;
}
if (_currentSyncTask.IsFaulted)
{
_logger.Error("Failed to retrieve bodies when synchronizing", _currentSyncTask.Exception);
throw _currentSyncTask.Exception;
}
ancestorLookupLevel = 0;
for (int i = 0; i < blocks.Length; i++)
{
if (token.IsCancellationRequested)
{
token.ThrowIfCancellationRequested();
}
blocks[i].Header = headersByHash[hashes[i]];
}
if (blocks.Length > 0)
{
Block parent = BlockTree.FindParent(blocks[0]);
if (parent == null)
{
ancestorLookupLevel += BatchSize;
peerInfo.NumberReceived -= BatchSize;
continue;
}
}
// Parity 1.11 non canonical blocks when testing on 27/06
for (int i = 0; i < blocks.Length; i++)
{
if (i != 0 && blocks[i].ParentHash != blocks[i - 1].Hash)
{
throw new EthSynchronizationException("Peer send an inconsistent block list");
}
}
for (int i = 0; i < blocks.Length; i++)
{
if (_logger.IsInfoEnabled)
{
_logger.Info($"Received {blocks[i]} from {peer.NodeId}");
}
if (_blockValidator.ValidateSuggestedBlock(blocks[i]))
{
AddBlockResult addResult = BlockTree.SuggestBlock(blocks[i]);
if (addResult == AddBlockResult.UnknownParent)
{
if (_logger.IsInfoEnabled)
{
_logger.Info($"Block {blocks[i].Number} ignored (unknown parent)");
}
if (i == 0)
{
if (_logger.IsWarnEnabled)
{
_logger.Warn("Resyncing split");
}
peerInfo.NumberReceived -= 1;
var syncTask = Task.Run(() => PeerSyncAsync(_syncCancellationTokenSource.Token, peerInfo), _syncCancellationTokenSource.Token);
await syncTask;
}
else
{
const string message = "Peer sent an inconsistent batch of block headers";
_logger.Error(message);
throw new EthSynchronizationException(message);
}
}
if (_logger.IsDebugEnabled)
{
_logger.Debug($"Block {blocks[i].Number} suggested for processing");
}
}
else
{
if (_logger.IsWarnEnabled)
{
_logger.Warn($"Block {blocks[i].Number} skipped (validation failed)");
}
}
}
peerInfo.NumberReceived = blocks[blocks.Length - 1].Number;
bestNumber = BlockTree.BestSuggested.Number;
}
if (_logger.IsInfoEnabled)
{
_logger.Info($"Stopping sync processes with Node: {peerInfo.Peer.NodeId}, wasCancelled: {wasCancelled}");
}
if (!wasCancelled)
{
peerInfo.IsSynced = true;
Synced?.Invoke(this, new SyncEventArgs(peerInfo.Peer));
}
}
public void AddPeer(ISynchronizationPeer peer)
{
}
public PeerInfo(ISynchronizationPeer peer, BigInteger bestRemoteBlockNumber)
{
Peer = peer;
NumberAvailable = bestRemoteBlockNumber;
}
private async Task SynchronizeWithPeerAsync(PeerInfo peerInfo, CancellationToken peerSyncToken)
{
bool wasCanceled = false;
ISynchronizationPeer peer = peerInfo.Peer;
BigInteger bestNumber = _blockTree.BestSuggested.Number;
// UInt256 bestDifficulty = _blockTree.BestSuggested.Difficulty;
const int maxLookup = 64;
int ancestorLookupLevel = 0;
bool isCommonAncestorKnown = false;
while (peerInfo.NumberAvailable > bestNumber && peerInfo.NumberReceived <= peerInfo.NumberAvailable)
{
if (_logger.IsTrace)
{
_logger.Trace($"Continue syncing with {peerInfo} (our best {bestNumber})");
}
if (ancestorLookupLevel > maxLookup)
{
if (_logger.IsWarn)
{
_logger.Warn($"Could not find common ancestor with {peerInfo.Peer.NodeId}");
}
throw new EthSynchronizationException("Peer with inconsistent chain in sync");
}
if (peerSyncToken.IsCancellationRequested)
{
peerSyncToken.ThrowIfCancellationRequested();
}
if (!isCommonAncestorKnown)
{
// TODO: cases when many peers used for sync and one peer finished sync and then we need resync - we should start from common point and not NumberReceived that may be far in the past
_logger.Trace($"Finding common ancestor for {peerInfo.Peer.NodeId}");
isCommonAncestorKnown = true;
}
BigInteger blocksLeft = peerInfo.NumberAvailable - peerInfo.NumberReceived;
int blocksToRequest = (int)BigInteger.Min(blocksLeft + 1, BatchSize);
if (_logger.IsTrace)
{
_logger.Trace($"Sync request to peer with {peerInfo.NumberAvailable} blocks. Got {peerInfo.NumberReceived} and asking for {blocksToRequest} more.");
}
Task <BlockHeader[]> headersTask = peer.GetBlockHeaders(peerInfo.NumberReceived, blocksToRequest, 0, peerSyncToken);
_currentSyncTask = headersTask;
BlockHeader[] headers = await headersTask;
if (_currentSyncTask.IsCanceled)
{
wasCanceled = true;
break;
}
if (_currentSyncTask.IsFaulted)
{
if (_currentSyncTask.Exception.InnerExceptions.Any(x => x.InnerException is TimeoutException))
{
if (_logger.IsTrace)
{
_logger.Error("Failed to retrieve headers when synchronizing (Timeout)", _currentSyncTask.Exception);
}
}
else
{
if (_logger.IsError)
{
_logger.Error("Failed to retrieve headers when synchronizing", _currentSyncTask.Exception);
}
}
throw _currentSyncTask.Exception;
}
if (peerSyncToken.IsCancellationRequested)
{
peerSyncToken.ThrowIfCancellationRequested();
}
List <Keccak> hashes = new List <Keccak>();
Dictionary <Keccak, BlockHeader> headersByHash = new Dictionary <Keccak, BlockHeader>();
for (int i = 1; i < headers.Length; i++)
{
hashes.Add(headers[i].Hash);
headersByHash[headers[i].Hash] = headers[i];
}
Task <Block[]> bodiesTask = peer.GetBlocks(hashes.ToArray(), peerSyncToken);
_currentSyncTask = bodiesTask;
Block[] blocks = await bodiesTask;
if (_currentSyncTask.IsCanceled)
{
wasCanceled = true;
break;
}
if (_currentSyncTask.IsFaulted)
{
if (_currentSyncTask.Exception.InnerExceptions.Any(x => x.InnerException is TimeoutException))
{
if (_logger.IsTrace)
{
_logger.Error("Failed to retrieve bodies when synchronizing (Timeout)", _currentSyncTask.Exception);
}
}
else
{
if (_logger.IsError)
{
_logger.Error("Failed to retrieve bodies when synchronizing", _currentSyncTask.Exception);
}
}
throw _currentSyncTask.Exception;
}
for (int i = 0; i < blocks.Length; i++)
{
if (peerSyncToken.IsCancellationRequested)
{
peerSyncToken.ThrowIfCancellationRequested();
}
blocks[i].Header = headersByHash[hashes[i]];
}
if (blocks.Length > 0)
{
Block parent = _blockTree.FindParent(blocks[0]);
if (parent == null)
{
ancestorLookupLevel += BatchSize;
peerInfo.NumberReceived = peerInfo.NumberReceived >= BatchSize ? peerInfo.NumberReceived - BatchSize : 0;
continue;
}
}
// Parity 1.11 non canonical blocks when testing on 27/06
for (int i = 0; i < blocks.Length; i++)
{
if (i != 0 && blocks[i].ParentHash != blocks[i - 1].Hash)
{
throw new EthSynchronizationException("Peer sent an inconsistent block list");
}
}
for (int i = 0; i < blocks.Length; i++)
{
if (_logger.IsTrace)
{
_logger.Trace($"Received {blocks[i]} from {peer.NodeId}");
}
if (_blockValidator.ValidateSuggestedBlock(blocks[i]))
{
AddBlockResult addResult = _blockTree.SuggestBlock(blocks[i]);
if (addResult == AddBlockResult.UnknownParent)
{
if (_logger.IsTrace)
{
_logger.Trace($"Block {blocks[i].Number} ignored (unknown parent)");
}
if (i == 0)
{
const string message = "Peer sent orphaned blocks";
_logger.Error(message);
throw new EthSynchronizationException(message);
// if (_logger.IsTrace) _logger.Trace("Resyncing split");
// peerInfo.NumberReceived -= 1;
// var syncTask =
// Task.Run(() => SynchronizeWithPeerAsync(peerInfo, _peerSyncCancellationTokenSource.Token),
// _peerSyncCancellationTokenSource.Token);
// await syncTask;
}
else
{
const string message = "Peer sent an inconsistent batch of block headers";
_logger.Error(message);
throw new EthSynchronizationException(message);
}
}
if (_logger.IsTrace)
{
_logger.Trace($"Block {blocks[i].Number} suggested for processing");
}
}
else
{
if (_logger.IsWarn)
{
_logger.Warn($"Block {blocks[i].Number} skipped (validation failed)");
}
}
}
peerInfo.NumberReceived = blocks[blocks.Length - 1].Number;
bestNumber = _blockTree.BestSuggested.Number;
}
if (_logger.IsTrace)
{
_logger.Trace($"Stopping sync processes with Node: {peerInfo.Peer.NodeId}, wasCancelled: {wasCanceled}");
}
}
public SyncingContext AfterPeerIsAdded(ISynchronizationPeer syncPeer)
{
_peers.TryAdd(syncPeer.ClientId, syncPeer);
SyncManager.AddPeer(syncPeer);
return(this);
}
public PeerInfo(ISynchronizationPeer peer)
{
Peer = peer;
}
public SyncingContext AfterPeerIsRemoved(ISynchronizationPeer syncPeer)
{
_peers.Remove(syncPeer.ClientId);
SyncManager.RemovePeer(syncPeer);
return(this);
}