@Test
public void disconnectOldVersions1() throws Exception {
// Set up the connection with an old version.
final SettableFuture<Void> connectedFuture = SettableFuture.create();
final SettableFuture<Void> disconnectedFuture = SettableFuture.create();
peer.addEventListener(
new AbstractPeerEventListener() {
@Override
public void onPeerConnected(Peer peer, int peerCount) {
connectedFuture.set(null);
}
@Override
public void onPeerDisconnected(Peer peer, int peerCount) {
disconnectedFuture.set(null);
}
});
connectWithVersion(500);
// We must wait uninterruptibly here because connect[WithVersion] generates a peer that
// interrupts the current
// thread when it disconnects.
Uninterruptibles.getUninterruptibly(connectedFuture);
Uninterruptibles.getUninterruptibly(disconnectedFuture);
try {
peer.writeTarget.writeBytes(new byte[1]);
fail();
} catch (IOException e) {
assertTrue(
(e.getCause() != null && e.getCause() instanceof CancelledKeyException)
|| (e instanceof SocketException && e.getMessage().equals("Socket is closed")));
}
}
// Check that it starts downloading the block chain correctly on request.
@Test
public void startBlockChainDownload() throws Exception {
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Block b2 = makeSolvedTestBlock(b1);
blockChain.add(b2);
connect();
fail.set(true);
peer.addEventListener(
new AbstractPeerEventListener() {
@Override
public void onChainDownloadStarted(Peer p, int blocksLeft) {
if (p == peer && blocksLeft == 108) fail.set(false);
}
},
Threading.SAME_THREAD);
peer.startBlockChainDownload();
List<Sha256Hash> expectedLocator = new ArrayList<Sha256Hash>();
expectedLocator.add(b2.getHash());
expectedLocator.add(b1.getHash());
expectedLocator.add(unitTestParams.getGenesisBlock().getHash());
GetBlocksMessage message = (GetBlocksMessage) outbound(writeTarget);
assertEquals(message.getLocator(), expectedLocator);
assertEquals(Sha256Hash.ZERO_HASH, message.getStopHash());
}
@Test
public void testAddEventListener() throws Exception {
connect();
PeerEventListener listener = new AbstractPeerEventListener();
peer.addEventListener(listener);
assertTrue(peer.removeEventListener(listener));
assertFalse(peer.removeEventListener(listener));
}
// Check that inventory message containing blocks we want is processed correctly.
@Test
public void newBlock() throws Exception {
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
final Block b2 = makeSolvedTestBlock(b1);
// Receive notification of a new block.
final InventoryMessage inv = new InventoryMessage(unitTestParams);
InventoryItem item = new InventoryItem(InventoryItem.Type.Block, b2.getHash());
inv.addItem(item);
final AtomicInteger newBlockMessagesReceived = new AtomicInteger(0);
connect();
// Round-trip a ping so that we never see the response verack if we attach too quick
pingAndWait(writeTarget);
peer.addEventListener(
new AbstractPeerEventListener() {
@Override
public synchronized Message onPreMessageReceived(Peer p, Message m) {
if (p != peer) fail.set(true);
if (m instanceof Pong) return m;
int newValue = newBlockMessagesReceived.incrementAndGet();
if (newValue == 1 && !inv.equals(m)) fail.set(true);
else if (newValue == 2 && !b2.equals(m)) fail.set(true);
else if (newValue > 3) fail.set(true);
return m;
}
@Override
public synchronized void onBlocksDownloaded(Peer p, Block block, int blocksLeft) {
int newValue = newBlockMessagesReceived.incrementAndGet();
if (newValue != 3
|| p != peer
|| !block.equals(b2)
|| blocksLeft != OTHER_PEER_CHAIN_HEIGHT - 2) fail.set(true);
}
},
Threading.SAME_THREAD);
long height = peer.getBestHeight();
inbound(writeTarget, inv);
pingAndWait(writeTarget);
assertEquals(height + 1, peer.getBestHeight());
// Response to the getdata message.
inbound(writeTarget, b2);
pingAndWait(writeTarget);
Threading.waitForUserCode();
pingAndWait(writeTarget);
assertEquals(3, newBlockMessagesReceived.get());
GetDataMessage getdata = (GetDataMessage) outbound(writeTarget);
List<InventoryItem> items = getdata.getItems();
assertEquals(1, items.size());
assertEquals(b2.getHash(), items.get(0).hash);
assertEquals(InventoryItem.Type.Block, items.get(0).type);
}
public void recursiveDownload(boolean useNotFound) throws Exception {
// Using ping or notfound?
connectWithVersion(useNotFound ? 70001 : 60001);
// Check that we can download all dependencies of an unconfirmed relevant transaction from the
// mempool.
ECKey to = new ECKey();
final Transaction[] onTx = new Transaction[1];
peer.addEventListener(
new AbstractPeerEventListener() {
@Override
public void onTransaction(Peer peer1, Transaction t) {
onTx[0] = t;
}
},
Threading.SAME_THREAD);
// Make the some fake transactions in the following graph:
// t1 -> t2 -> [t5]
// -> t3 -> t4 -> [t6]
// -> [t7]
// -> [t8]
// The ones in brackets are assumed to be in the chain and are represented only by hashes.
Transaction t2 = TestUtils.createFakeTx(unitTestParams, Utils.toNanoCoins(1, 0), to);
Sha256Hash t5 = t2.getInput(0).getOutpoint().getHash();
Transaction t4 = TestUtils.createFakeTx(unitTestParams, Utils.toNanoCoins(1, 0), new ECKey());
Sha256Hash t6 = t4.getInput(0).getOutpoint().getHash();
t4.addOutput(Utils.toNanoCoins(1, 0), new ECKey());
Transaction t3 = new Transaction(unitTestParams);
t3.addInput(t4.getOutput(0));
t3.addOutput(Utils.toNanoCoins(1, 0), new ECKey());
Transaction t1 = new Transaction(unitTestParams);
t1.addInput(t2.getOutput(0));
t1.addInput(t3.getOutput(0));
Sha256Hash someHash =
new Sha256Hash("2b801dd82f01d17bbde881687bf72bc62e2faa8ab8133d36fcb8c3abe7459da6");
t1.addInput(
new TransactionInput(
unitTestParams,
t1,
new byte[] {},
new TransactionOutPoint(unitTestParams, 0, someHash)));
Sha256Hash anotherHash =
new Sha256Hash("3b801dd82f01d17bbde881687bf72bc62e2faa8ab8133d36fcb8c3abe7459da6");
t1.addInput(
new TransactionInput(
unitTestParams,
t1,
new byte[] {},
new TransactionOutPoint(unitTestParams, 1, anotherHash)));
t1.addOutput(Utils.toNanoCoins(1, 0), to);
t1 = TestUtils.roundTripTransaction(unitTestParams, t1);
t2 = TestUtils.roundTripTransaction(unitTestParams, t2);
t3 = TestUtils.roundTripTransaction(unitTestParams, t3);
t4 = TestUtils.roundTripTransaction(unitTestParams, t4);
// Announce the first one. Wait for it to be downloaded.
InventoryMessage inv = new InventoryMessage(unitTestParams);
inv.addTransaction(t1);
inbound(writeTarget, inv);
GetDataMessage getdata = (GetDataMessage) outbound(writeTarget);
Threading.waitForUserCode();
assertEquals(t1.getHash(), getdata.getItems().get(0).hash);
inbound(writeTarget, t1);
pingAndWait(writeTarget);
assertEquals(t1, onTx[0]);
// We want its dependencies so ask for them.
ListenableFuture<List<Transaction>> futures = peer.downloadDependencies(t1);
assertFalse(futures.isDone());
// It will recursively ask for the dependencies of t1: t2, t3, someHash and anotherHash.
getdata = (GetDataMessage) outbound(writeTarget);
assertEquals(4, getdata.getItems().size());
assertEquals(t2.getHash(), getdata.getItems().get(0).hash);
assertEquals(t3.getHash(), getdata.getItems().get(1).hash);
assertEquals(someHash, getdata.getItems().get(2).hash);
assertEquals(anotherHash, getdata.getItems().get(3).hash);
long nonce = -1;
if (!useNotFound) nonce = ((Ping) outbound(writeTarget)).getNonce();
// For some random reason, t4 is delivered at this point before it's needed - perhaps it was a
// Bloom filter
// false positive. We do this to check that the mempool is being checked for seen transactions
// before
// requesting them.
inbound(writeTarget, t4);
// Deliver the requested transactions.
inbound(writeTarget, t2);
inbound(writeTarget, t3);
if (useNotFound) {
NotFoundMessage notFound = new NotFoundMessage(unitTestParams);
notFound.addItem(new InventoryItem(InventoryItem.Type.Transaction, someHash));
notFound.addItem(new InventoryItem(InventoryItem.Type.Transaction, anotherHash));
inbound(writeTarget, notFound);
} else {
inbound(writeTarget, new Pong(nonce));
}
assertFalse(futures.isDone());
// It will recursively ask for the dependencies of t2: t5 and t4, but not t3 because it already
// found t4.
getdata = (GetDataMessage) outbound(writeTarget);
assertEquals(getdata.getItems().get(0).hash, t2.getInput(0).getOutpoint().getHash());
// t5 isn't found and t4 is.
if (useNotFound) {
NotFoundMessage notFound = new NotFoundMessage(unitTestParams);
notFound.addItem(new InventoryItem(InventoryItem.Type.Transaction, t5));
inbound(writeTarget, notFound);
} else {
bouncePing();
}
assertFalse(futures.isDone());
// Continue to explore the t4 branch and ask for t6, which is in the chain.
getdata = (GetDataMessage) outbound(writeTarget);
assertEquals(t6, getdata.getItems().get(0).hash);
if (useNotFound) {
NotFoundMessage notFound = new NotFoundMessage(unitTestParams);
notFound.addItem(new InventoryItem(InventoryItem.Type.Transaction, t6));
inbound(writeTarget, notFound);
} else {
bouncePing();
}
pingAndWait(writeTarget);
// That's it, we explored the entire tree.
assertTrue(futures.isDone());
List<Transaction> results = futures.get();
assertTrue(results.contains(t2));
assertTrue(results.contains(t3));
assertTrue(results.contains(t4));
}