public void SendAndReceiveSmartContractTransactionsOnPosNetwork()
{
using (NodeBuilder builder = NodeBuilder.Create(this))
{
CoreNode scSender = builder.CreateSmartContractPosNode();
CoreNode scReceiver = builder.CreateSmartContractPosNode();
builder.StartAll();
scSender.NotInIBD();
scReceiver.NotInIBD();
scSender.FullNode.WalletManager().CreateWallet(Password, WalletName, Passphrase);
scReceiver.FullNode.WalletManager().CreateWallet(Password, WalletName, Passphrase);
var maturity = (int)scSender.FullNode.Network.Consensus.CoinbaseMaturity;
HdAddress senderAddress = TestHelper.MineBlocks(scSender, WalletName, Password, AccountName, maturity + 5).AddressUsed;
// Wait for block repo for block sync to work.
TestHelper.WaitLoop(() => TestHelper.IsNodeSynced(scSender));
// The mining should add coins to the wallet.
var total = scSender.FullNode.WalletManager().GetSpendableTransactionsInWallet(WalletName).Sum(s => s.Transaction.Amount);
Assert.Equal(Money.COIN * 6 * 50, total);
// Create a token contract
ulong gasPrice = 1;
int vmVersion = 1;
Gas gasLimit = (Gas)5000;
SmartContractCompilationResult compilationResult = SmartContractCompiler.CompileFile("SmartContracts/TransferTestPos.cs");
Assert.True(compilationResult.Success);
var contractCarrier = SmartContractCarrier.CreateContract(vmVersion, compilationResult.Compilation, gasPrice, gasLimit);
var contractCreateScript = new Script(contractCarrier.Serialize());
var txBuildContext = new TransactionBuildContext(scSender.FullNode.Network)
{
AccountReference = new WalletAccountReference(WalletName, AccountName),
ChangeAddress = senderAddress,
MinConfirmations = maturity,
FeeType = FeeType.High,
WalletPassword = Password,
Recipients = new[] { new Recipient {
Amount = 0, ScriptPubKey = contractCreateScript
} }.ToList()
};
// Build the transfer contract transaction
var transferContractTransaction = BuildTransferContractTransaction(scSender, txBuildContext);
// Add the smart contract transaction to the mempool to be mined.
scSender.AddToStratisMempool(transferContractTransaction);
// Ensure the smart contract transaction is in the mempool.
TestHelper.WaitLoop(() => scSender.CreateRPCClient().GetRawMempool().Length > 0);
// Mine the token transaction and wait for it sync
scSender.GenerateStratisWithMiner(1);
TestHelper.WaitLoop(() => TestHelper.IsNodeSynced(scSender));
// Sync to the receiver node
scSender.CreateRPCClient().AddNode(scReceiver.Endpoint, true);
TestHelper.WaitLoop(() => TestHelper.AreNodesSynced(scReceiver, scSender));
// Ensure that boths nodes has the contract
IContractStateRoot senderState = scSender.FullNode.NodeService <IContractStateRoot>();
IContractStateRoot receiverState = scReceiver.FullNode.NodeService <IContractStateRoot>();
IAddressGenerator addressGenerator = scSender.FullNode.NodeService <IAddressGenerator>();
uint160 tokenContractAddress = addressGenerator.GenerateAddress(transferContractTransaction.GetHash(), 0);
Assert.NotNull(senderState.GetCode(tokenContractAddress));
Assert.NotNull(receiverState.GetCode(tokenContractAddress));
scSender.FullNode.MempoolManager().Clear();
// Create a transfer token contract
compilationResult = SmartContractCompiler.CompileFile("SmartContracts/TransferTestPos.cs");
Assert.True(compilationResult.Success);
contractCarrier = SmartContractCarrier.CreateContract(vmVersion, compilationResult.Compilation, gasPrice, gasLimit);
contractCreateScript = new Script(contractCarrier.Serialize());
txBuildContext = new TransactionBuildContext(scSender.FullNode.Network)
{
AccountReference = new WalletAccountReference(WalletName, AccountName),
ChangeAddress = senderAddress,
MinConfirmations = maturity,
FeeType = FeeType.High,
WalletPassword = Password,
Recipients = new[] { new Recipient {
Amount = 0, ScriptPubKey = contractCreateScript
} }.ToList()
};
// Build the transfer contract transaction
transferContractTransaction = BuildTransferContractTransaction(scSender, txBuildContext);
// Add the smart contract transaction to the mempool to be mined.
scSender.AddToStratisMempool(transferContractTransaction);
// Wait for the token transaction to be picked up by the mempool
TestHelper.WaitLoop(() => scSender.CreateRPCClient().GetRawMempool().Length > 0);
scSender.GenerateStratisWithMiner(1);
// Ensure the node is synced
TestHelper.WaitLoop(() => TestHelper.IsNodeSynced(scSender));
// Ensure both nodes are synced with each other
TestHelper.WaitLoop(() => TestHelper.AreNodesSynced(scReceiver, scSender));
tokenContractAddress = addressGenerator.GenerateAddress(transferContractTransaction.GetHash(), 0); // nonce is 0 for user contract creation.
Assert.NotNull(senderState.GetCode(tokenContractAddress));
Assert.NotNull(receiverState.GetCode(tokenContractAddress));
scSender.FullNode.MempoolManager().Clear();
// Create a call contract transaction which will transfer funds
contractCarrier = SmartContractCarrier.CallContract(1, tokenContractAddress, "Test", gasPrice, gasLimit);
Script contractCallScript = new Script(contractCarrier.Serialize());
txBuildContext = new TransactionBuildContext(scSender.FullNode.Network)
{
AccountReference = new WalletAccountReference(WalletName, AccountName),
ChangeAddress = senderAddress,
MinConfirmations = maturity,
FeeType = FeeType.High,
WalletPassword = Password,
Recipients = new[] { new Recipient {
Amount = 1000, ScriptPubKey = contractCallScript
} }.ToList()
};
// Build the transfer contract transaction
var callContractTransaction = BuildTransferContractTransaction(scSender, txBuildContext);
// Add the smart contract transaction to the mempool to be mined.
scSender.AddToStratisMempool(callContractTransaction);
// Wait for the token transaction to be picked up by the mempool
TestHelper.WaitLoop(() => scSender.CreateRPCClient().GetRawMempool().Length > 0);
scSender.GenerateStratisWithMiner(1);
// Ensure the nodes are synced
TestHelper.WaitLoop(() => TestHelper.IsNodeSynced(scSender));
TestHelper.WaitLoop(() => TestHelper.AreNodesSynced(scReceiver, scSender));
// The balance should now reflect the transfer
Assert.Equal((ulong)900, senderState.GetCurrentBalance(tokenContractAddress));
}
}
public void TxMempoolBlockDoublespend()
{
using (NodeBuilder builder = NodeBuilder.Create(this))
{
CoreNode stratisNodeSync = builder.CreateStratisPowNode(this.network).WithDummyWallet().Start();
stratisNodeSync.FullNode.NodeService <MempoolSettings>().RequireStandard = true; // make sure to test standard tx
TestHelper.MineBlocks(stratisNodeSync, 100); // coinbase maturity = 100
// Make sure skipping validation of transctions that were
// validated going into the memory pool does not allow
// double-spends in blocks to pass validation when they should not.
Script scriptPubKey = PayToPubkeyHashTemplate.Instance.GenerateScriptPubKey(stratisNodeSync.MinerSecret.PubKey);
Block genBlock = stratisNodeSync.FullNode.BlockStore().GetBlockAsync(stratisNodeSync.FullNode.Chain.GetBlock(1).HashBlock).Result;
// Create a double-spend of mature coinbase txn:
var spends = new List <Transaction>(2);
foreach (int index in Enumerable.Range(1, 2))
{
Transaction trx = stratisNodeSync.FullNode.Network.CreateTransaction();
trx.AddInput(new TxIn(new OutPoint(genBlock.Transactions[0].GetHash(), 0), scriptPubKey));
trx.AddOutput(Money.Cents(11), new Key().PubKey.Hash);
// Sign:
trx.Sign(stratisNodeSync.FullNode.Network, stratisNodeSync.MinerSecret, false);
spends.Add(trx);
}
// Test 1: block with both of those transactions should be rejected.
var tipBeforeBlockCreation = stratisNodeSync.FullNode.Chain.Tip;
Assert.Throws <ConsensusException>(() => { Task.Delay(2).Wait(); Block block = TestHelper.GenerateBlockManually(stratisNodeSync, spends); });
Assert.True(stratisNodeSync.FullNode.Chain.Tip.HashBlock == tipBeforeBlockCreation.HashBlock);
// Test 2: ... and should be rejected if spend1 is in the memory pool
tipBeforeBlockCreation = stratisNodeSync.FullNode.Chain.Tip;
Assert.True(stratisNodeSync.AddToStratisMempool(spends[0]));
Assert.Throws <ConsensusException>(() => { Task.Delay(2).Wait(); Block block = TestHelper.GenerateBlockManually(stratisNodeSync, spends, 100_000); });
Assert.True(stratisNodeSync.FullNode.Chain.Tip.HashBlock == tipBeforeBlockCreation.HashBlock);
stratisNodeSync.FullNode.MempoolManager().Clear().Wait();
// Test 3: ... and should be rejected if spend2 is in the memory pool
tipBeforeBlockCreation = stratisNodeSync.FullNode.Chain.Tip;
Assert.True(stratisNodeSync.AddToStratisMempool(spends[1]));
Assert.Throws <ConsensusException>(() => { Task.Delay(2).Wait(); Block block = TestHelper.GenerateBlockManually(stratisNodeSync, spends, 100_000_000); });
Assert.True(stratisNodeSync.FullNode.Chain.Tip.HashBlock == tipBeforeBlockCreation.HashBlock);
stratisNodeSync.FullNode.MempoolManager().Clear().Wait();
// Final sanity test: first spend in mempool, second in block, that's OK:
var oneSpend = new List <Transaction>();
oneSpend.Add(spends[0]);
Assert.True(stratisNodeSync.AddToStratisMempool(spends[1]));
var validBlock = TestHelper.GenerateBlockManually(stratisNodeSync, oneSpend);
TestHelper.WaitLoop(() => stratisNodeSync.FullNode.ConsensusManager().Tip.HashBlock == stratisNodeSync.FullNode.Chain.Tip.HashBlock);
Assert.True(stratisNodeSync.FullNode.Chain.Tip.HashBlock == validBlock.GetHash());
// spends[1] should have been removed from the mempool when the
// block with spends[0] is accepted:
TestHelper.WaitLoop(() => stratisNodeSync.FullNode.MempoolManager().MempoolSize().Result == 0);
}
}