/// <summary>
/// Create a new TrackerBehavior instance
/// </summary>
/// <param name="tracker">The Tracker registering transactions and confirmations</param>
/// <param name="chain">The chain used to fetch height of incoming blocks, if null, use the chain of ChainBehavior</param>
public TrackerBehavior(Tracker tracker, ConcurrentChain chain = null)
{
if(tracker == null)
throw new ArgumentNullException("tracker");
FalsePositiveRate = 0.000005;
_Chain = chain;
_ExplicitChain = chain;
_Tracker = tracker;
}
public void UnconfirmedTransactionsWithoutReceivedCoinsShouldNotShowUp()
{
BlockchainBuilder builder = new BlockchainBuilder();
Tracker tracker = new Tracker();
Key bob = new Key();
tracker.Add(bob);
Key alice = new Key();
var tx1 = builder.GiveMoney(bob, Money.Coins(1.0m));
var b = builder.FindBlock();
tracker.NotifyTransaction(tx1, builder.Chain.Tip, b);
var tx2 = builder.SpendCoin(tx1.Outputs.AsCoins().First(), alice, Money.Coins(0.1m));
b = builder.FindBlock();
tracker.NotifyTransaction(tx2, builder.Chain.Tip, b);
var tx3 = builder.SpendCoin(tx2.Outputs.AsCoins().Skip(1).First(), alice, Money.Coins(0.2m));
Assert.True(tracker.NotifyTransaction(tx3));
var transactions = tracker.GetWalletTransactions(builder.Chain);
Assert.True(transactions.Count == 3);
Assert.True(transactions.Summary.UnConfirmed.TransactionCount == 1);
Assert.True(transactions.Summary.UnConfirmed.Amount == -Money.Coins(0.2m));
Assert.True(transactions.Summary.Confirmed.TransactionCount == 2);
Assert.True(transactions.Summary.Confirmed.Amount == Money.Coins(0.9m));
Assert.True(transactions.Summary.Spendable.TransactionCount == 3);
Assert.True(transactions.Summary.Spendable.Amount == Money.Coins(0.7m));
builder.Chain.SetTip(builder.Chain.GetBlock(1));
transactions = tracker.GetWalletTransactions(builder.Chain);
Action _ = () =>
{
Assert.True(transactions.Count == 3);
Assert.True(transactions.Summary.Confirmed.TransactionCount == 1);
Assert.True(transactions.Summary.Confirmed.Amount == Money.Coins(1.0m));
Assert.True(transactions.Summary.Spendable.TransactionCount == 3);
Assert.True(transactions.Summary.Spendable.Amount == Money.Coins(0.7m));
Assert.True(transactions.Summary.UnConfirmed.TransactionCount == 2);
Assert.True(transactions.Summary.UnConfirmed.Amount == -Money.Coins(0.3m));
};
_();
tracker.NotifyTransaction(tx2); //Notifying tx2 should have no effect, since it already is accounted because it was orphaned
_();
}
public void CanPrune()
{
BlockchainBuilder builder = new BlockchainBuilder();
Tracker tracker = new Tracker();
Key bob = new Key();
Key alice = new Key();
tracker.Add(bob);
var oldUnconf = builder.GiveMoney(bob, Money.Coins(1.0m));
Assert.True(tracker.NotifyTransaction(oldUnconf));
builder.Mempool.Clear();
var oldConf = builder.GiveMoney(bob, Money.Coins(0.9m));
var oldConfSpent = builder.SpendCoin(oldConf.Outputs.AsCoins().First(), alice, Money.Coins(0.01m));
var block = builder.FindBlock();
Assert.True(tracker.NotifyTransaction(oldConf, builder.Chain.Tip, block));
Assert.True(tracker.NotifyTransaction(oldConfSpent, builder.Chain.Tip, block));
for(int i = 0 ; i < 9 ; i++)
{
builder.FindBlock();
}
Assert.True(tracker.Prune(builder.Chain, 10).Count == 0);
builder.FindBlock();
//Prune tracked outpoint
var pruned = tracker.Prune(builder.Chain, 10);
Assert.Equal(1, pruned.Count);
Assert.True(pruned.First() is Tracker.TrackedOutpoint);
//Prune old unconf
pruned = tracker.Prune(builder.Chain, timeExpiration: TimeSpan.Zero);
Assert.Equal(1, pruned.Count);
var op = pruned.OfType<Tracker.Operation>().First();
Assert.True(op.BlockId == null);
var conf = builder.GiveMoney(bob, Money.Coins(0.9m));
block = builder.FindBlock();
Assert.True(tracker.NotifyTransaction(conf, builder.Chain.Tip, block));
var oldSpentForked = builder.SpendCoin(conf.Outputs.AsCoins().First(), alice, Money.Coins(0.021m));
block = builder.FindBlock();
Assert.True(tracker.NotifyTransaction(oldSpentForked, builder.Chain.Tip, block));
var forked = builder.Chain.Tip;
builder.Chain.SetTip(builder.Chain.Tip.Previous);
for(int i = 0 ; i < 10 ; i++)
{
builder.FindBlock();
}
pruned = tracker.Prune(builder.Chain, 10);
Assert.True(pruned.Count == 1); //Tracked outpoint of conf
Assert.True(pruned.First() is Tracker.TrackedOutpoint);
block = builder.FindBlock();
pruned = tracker.Prune(builder.Chain, 10); //Old forked spent
Assert.Equal(1, pruned.Count);
op = pruned.OfType<Tracker.Operation>().First();
Assert.Equal(forked.HashBlock, op.BlockId);
}
public void CanTrackScriptCoins()
{
BlockchainBuilder builder = new BlockchainBuilder();
Tracker tracker = new Tracker();
Key bob = new Key();
tracker.Add(bob.PubKey, true);
var tx1 = builder.GiveMoney(bob.PubKey.ScriptPubKey.Hash, Money.Coins(1.0m));
Assert.True(tracker.NotifyTransaction(tx1));
Assert.True(tracker.GetWalletTransactions(builder.Chain)[0].ReceivedCoins[0] is ScriptCoin);
}
public void CanTrackKey()
{
BlockchainBuilder builder = new BlockchainBuilder();
Key bob = new Key();
Tracker tracker = new Tracker();
tracker.Add(bob);
var tx1 = builder.GiveMoney(bob, Money.Coins(1.0m));
var coin = tx1.Outputs.AsCoins().First();
Assert.True(tracker.NotifyTransaction(tx1));
Thread.Sleep(10);
Key alice = new Key();
var tx2 = builder.SpendCoin(coin, alice, Money.Coins(0.6m));
Assert.True(tracker.NotifyTransaction(tx2));
var block = builder.FindBlock();
foreach(var btx in block.Transactions)
{
if(!btx.IsCoinBase)
{
Assert.True(tracker.NotifyTransaction(btx, builder.Chain.GetBlock(block.GetHash()), block));
Assert.True(tracker.NotifyTransaction(btx, builder.Chain.GetBlock(block.GetHash()), block)); //Idempotent
}
}
var transactions = tracker.GetWalletTransactions(builder.Chain);
Assert.True(transactions.Count == 2);
Assert.True(transactions[0].Transaction.GetHash() == tx2.GetHash());
Assert.True(transactions[1].Transaction.GetHash() == tx1.GetHash());
Assert.True(transactions[0].Balance == -Money.Coins(0.6m));
var tx3 = builder.GiveMoney(bob, Money.Coins(0.01m));
coin = tx3.Outputs.AsCoins().First();
block = builder.FindBlock();
Assert.True(tracker.NotifyTransaction(block.Transactions[1], builder.Chain.GetBlock(block.GetHash()), block));
transactions = tracker.GetWalletTransactions(builder.Chain);
Assert.True(transactions.Count == 3);
Assert.True(transactions.Summary.UnConfirmed.TransactionCount == 0);
Assert.True(transactions[0].Transaction.GetHash() == block.Transactions[1].GetHash());
Assert.Equal(2, transactions.GetSpendableCoins().Count()); // the 1 change + 1 gift
builder.Chain.SetTip(builder.Chain.Tip.Previous);
transactions = tracker.GetWalletTransactions(builder.Chain);
Assert.True(transactions.Count == 3);
Assert.True(transactions.Summary.UnConfirmed.TransactionCount == 1);
//Test roundtrip serialization
var filterBefore = tracker.CreateBloomFilter(0.005);
MemoryStream ms = new MemoryStream();
tracker.Save(ms);
tracker = new Tracker();
ms.Position = 0;
tracker = Tracker.Load(ms);
transactions = tracker.GetWalletTransactions(builder.Chain);
Assert.True(transactions.Count == 3);
Assert.True(transactions.Summary.UnConfirmed.TransactionCount == 1);
var filterAfter = tracker.CreateBloomFilter(0.005);
Assert.True(filterBefore.ToBytes().SequenceEqual(filterAfter.ToBytes()));
/////
}
public static Tracker Load(Stream stream)
{
var tracker = new Tracker();
tracker.LoadCore(stream);
return tracker;
}
void _ListenerTracked_NewOperation(Tracker sender, Tracker.IOperation trackerOperation)
{
var newWalletTransaction = NewWalletTransaction;
if(newWalletTransaction != null && _Group != null)
{
if(trackerOperation.ContainsWallet(Name))
{
newWalletTransaction(this, trackerOperation.ToWalletTransaction(Chain, Name));
}
}
}
/// <summary>
/// Configure the components of the wallet
/// </summary>
/// <param name="chain">The chain to keep in sync, if not provided the whole chain will be downloaded on the network (more than 30MB)</param>
/// <param name="addrman">The Address Manager for speeding up peer discovery</param>
/// <param name="tracker">The tracker responsible for providing bloom filters</param>
public void Configure(ConcurrentChain chain = null,
AddressManager addrman = null,
Tracker tracker = null)
{
if(State != WalletState.Created)
throw new InvalidOperationException("The wallet is already connecting or connected");
var parameters = new NodeConnectionParameters();
ConfigureDefaultNodeConnectionParameters(parameters);
//Pick the behaviors
if(addrman != null)
parameters.TemplateBehaviors.Add(new AddressManagerBehavior(addrman)); //Listen addr, help for node discovery
if(chain != null)
parameters.TemplateBehaviors.Add(new ChainBehavior(chain)); //Keep chain in sync
if(tracker != null)
parameters.TemplateBehaviors.Add(new TrackerBehavior(tracker, chain)); //Set bloom filters and scan the blockchain
Configure(parameters);
}
private void AddKnown(KeyPath keyPath, Tracker tracker, bool isInternal)
{
if(_Parameters.UseP2SH)
{
var script = GetScriptPubKey(keyPath, true);
_KnownScripts.Add(script.Hash.ScriptPubKey, keyPath);
tracker.Add(script, true, isInternal, wallet: Name);
}
else
{
var script = GetScriptPubKey(keyPath, false);
_KnownScripts.Add(script, keyPath);
tracker.Add(script, false, isInternal, wallet: Name);
}
}
/// <summary>
/// Connect the wallet with the given connection parameters
/// </summary>
/// <param name="parameters"></param>
public void Connect(NodeConnectionParameters parameters)
{
if(State != WalletState.Created)
throw new InvalidOperationException("The wallet is already connecting or connected");
var group = NodesGroup.GetNodeGroup(parameters);
if(group == null)
{
group = new NodesGroup(_Parameters.Network, parameters);
}
parameters = group.NodeConnectionParameters;
group.Requirements.MinVersion = ProtocolVersion.PROTOCOL_VERSION;
group.Requirements.RequiredServices = NodeServices.Network;
var chain = parameters.TemplateBehaviors.Find<ChainBehavior>();
if(chain == null)
{
chain = new ChainBehavior(new ConcurrentChain(_Parameters.Network));
parameters.TemplateBehaviors.Add(chain);
}
if(chain.Chain.Genesis.HashBlock != _Parameters.Network.GetGenesis().GetHash())
throw new InvalidOperationException("ChainBehavior with invalid network chain detected");
var addrman = parameters.TemplateBehaviors.Find<AddressManagerBehavior>();
if(addrman == null)
{
addrman = new AddressManagerBehavior(new AddressManager());
parameters.TemplateBehaviors.Add(addrman);
}
var tracker = parameters.TemplateBehaviors.Find<TrackerBehavior>();
if(tracker == null)
{
tracker = new TrackerBehavior(new Tracker(), chain.Chain);
parameters.TemplateBehaviors.Add(tracker);
}
_Chain = chain.Chain;
_AddressManager = addrman.AddressManager;
_Tracker = tracker.Tracker;
_TrackerBehavior = tracker;
_Group = group;
if(AddKnownScriptToTracker())
_Group.Purge("Bloom filter renew");
_State = WalletState.Disconnected;
_Group.Connect();
_Group.ConnectedNodes.Added += ConnectedNodes_Added;
_Group.ConnectedNodes.Removed += ConnectedNodes_Added;
foreach(var node in _Group.ConnectedNodes)
{
node.Behaviors.Find<TrackerBehavior>().Scan(_ScanLocation, Created);
}
}
#pragma warning disable CS0612 // Type or member is obsolete
public WalletTransactionsCollection GetTransactions()
#pragma warning restore CS0612 // Type or member is obsolete
{
AssertGroupAffected();
return(Tracker.GetWalletTransactions(Chain, Name));
}
