public void DeserializeAndSerialize()
{
var test = new GetBlockByIndexPayload()
{
Count = -1, IndexStart = int.MaxValue
};
var clone = test.ToArray().AsSerializable <GetBlockByIndexPayload>();
Assert.AreEqual(test.Count, clone.Count);
Assert.AreEqual(test.IndexStart, clone.IndexStart);
test = new GetBlockByIndexPayload()
{
Count = -2, IndexStart = int.MaxValue
};
Assert.ThrowsException <FormatException>(() => test.ToArray().AsSerializable <GetBlockByIndexPayload>());
test = new GetBlockByIndexPayload()
{
Count = 0, IndexStart = int.MaxValue
};
Assert.ThrowsException <FormatException>(() => test.ToArray().AsSerializable <GetBlockByIndexPayload>());
test = new GetBlockByIndexPayload()
{
Count = HeadersPayload.MaxHeadersCount + 1, IndexStart = int.MaxValue
};
Assert.ThrowsException <FormatException>(() => test.ToArray().AsSerializable <GetBlockByIndexPayload>());
}
public void Size_Get()
{
var test = new GetBlockByIndexPayload()
{
Count = 5, IndexStart = 5
};
test.Size.Should().Be(6);
test = GetBlockByIndexPayload.Create(1, short.MaxValue);
test.Size.Should().Be(6);
}
private bool AssignSyncTask(uint index, TaskSession filterSession = null)
{
if (index <= Blockchain.Singleton.Height || sessions.Values.Any(p => p != filterSession && p.IndexTasks.ContainsKey(index)))
return true;
Random rand = new Random();
KeyValuePair<IActorRef, TaskSession> remoteNode = sessions.Where(p => p.Value != filterSession && p.Value.LastBlockIndex >= index)
.OrderBy(p => p.Value.IndexTasks.Count)
.ThenBy(s => rand.Next())
.FirstOrDefault();
if (remoteNode.Value == null)
{
failedSyncTasks.Add(index);
return false;
}
TaskSession session = remoteNode.Value;
session.IndexTasks.TryAdd(index, TimeProvider.Current.UtcNow);
remoteNode.Key.Tell(Message.Create(MessageCommand.GetBlockByIndex, GetBlockByIndexPayload.Create(index, 1)));
failedSyncTasks.Remove(index);
return true;
}
private void OnBroadcastGetHeadersCommand(uint index)
{
OnBroadcastCommand(MessageCommand.GetHeaders, GetBlockByIndexPayload.Create(index));
}
private void RequestTasks(IActorRef remoteNode, TaskSession session)
{
if (session.HasTooManyTasks)
{
return;
}
DataCache snapshot = system.StoreView;
// If there are pending tasks of InventoryType.Block we should process them
if (session.AvailableTasks.Count > 0)
{
session.AvailableTasks.Remove(knownHashes);
// Search any similar hash that is on Singleton's knowledge, which means, on the way or already processed
session.AvailableTasks.RemoveWhere(p => NativeContract.Ledger.ContainsBlock(snapshot, p));
HashSet <UInt256> hashes = new HashSet <UInt256>(session.AvailableTasks);
if (hashes.Count > 0)
{
foreach (UInt256 hash in hashes.ToArray())
{
if (!IncrementGlobalTask(hash))
{
hashes.Remove(hash);
}
}
session.AvailableTasks.Remove(hashes);
foreach (UInt256 hash in hashes)
{
session.InvTasks[hash] = DateTime.UtcNow;
}
foreach (InvPayload group in InvPayload.CreateGroup(InventoryType.Block, hashes.ToArray()))
{
remoteNode.Tell(Message.Create(MessageCommand.GetData, group));
}
return;
}
}
uint currentHeight = NativeContract.Ledger.CurrentIndex(snapshot);
uint headerHeight = system.HeaderCache.Last?.Index ?? currentHeight;
// When the number of AvailableTasks is no more than 0, no pending tasks of InventoryType.Block, it should process pending the tasks of headers
// If not HeaderTask pending to be processed it should ask for more Blocks
if ((!HasHeaderTask || globalInvTasks[HeaderTaskHash] < MaxConncurrentTasks) && headerHeight < session.LastBlockIndex && !system.HeaderCache.Full)
{
session.InvTasks[HeaderTaskHash] = DateTime.UtcNow;
IncrementGlobalTask(HeaderTaskHash);
remoteNode.Tell(Message.Create(MessageCommand.GetHeaders, GetBlockByIndexPayload.Create(headerHeight)));
}
else if (currentHeight < session.LastBlockIndex)
{
uint startHeight = currentHeight;
while (globalIndexTasks.ContainsKey(++startHeight))
{
}
if (startHeight > session.LastBlockIndex || startHeight >= currentHeight + InvPayload.MaxHashesCount)
{
return;
}
uint endHeight = startHeight;
while (!globalIndexTasks.ContainsKey(++endHeight) && endHeight <= session.LastBlockIndex && endHeight <= currentHeight + InvPayload.MaxHashesCount)
{
}
uint count = Math.Min(endHeight - startHeight, InvPayload.MaxHashesCount);
for (uint i = 0; i < count; i++)
{
session.IndexTasks[startHeight + i] = TimeProvider.Current.UtcNow;
IncrementGlobalTask(startHeight + i);
}
remoteNode.Tell(Message.Create(MessageCommand.GetBlockByIndex, GetBlockByIndexPayload.Create(startHeight, (short)count)));
}
else if (!session.MempoolSent)
{
session.MempoolSent = true;
remoteNode.Tell(Message.Create(MessageCommand.Mempool));
}
}