/*
* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.devcoin.core;
import com.google.devcoin.core.Peer.PeerHandler;
import com.google.devcoin.params.TestNet3Params;
import com.google.devcoin.utils.TestUtils;
import com.google.devcoin.utils.Threading;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import org.easymock.Capture;
import org.easymock.CaptureType;
import org.jboss.netty.channel.*;
import org.junit.Before;
import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.math.BigInteger;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import static com.google.devcoin.utils.TestUtils.*;
import static org.easymock.EasyMock.*;
import static org.junit.Assert.*;
public class PeerTest extends TestWithNetworkConnections {
private Peer peer;
private Capture<DownstreamMessageEvent> event;
private PeerHandler handler;
private static final int OTHER_PEER_CHAIN_HEIGHT = 110;
private MemoryPool memoryPool;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
memoryPool = new MemoryPool();
VersionMessage ver = new VersionMessage(unitTestParams, 100);
peer = new Peer(unitTestParams, blockChain, ver, memoryPool);
peer.addWallet(wallet);
handler = peer.getHandler();
event = new Capture<DownstreamMessageEvent>(CaptureType.ALL);
pipeline.sendDownstream(capture(event));
expectLastCall().anyTimes();
}
private void connect() throws Exception {
connect(handler, channel, ctx, 70001);
}
private void connectWithVersion(int version) throws Exception {
connect(handler, channel, ctx, version);
}
private void connect(PeerHandler handler, Channel channel, ChannelHandlerContext ctx, int version) throws Exception {
handler.connectRequested(ctx, new UpstreamChannelStateEvent(channel, ChannelState.CONNECTED, socketAddress));
VersionMessage peerVersion = new VersionMessage(unitTestParams, OTHER_PEER_CHAIN_HEIGHT);
peerVersion.clientVersion = version;
DownstreamMessageEvent versionEvent =
new DownstreamMessageEvent(channel, Channels.future(channel), peerVersion, null);
handler.messageReceived(ctx, versionEvent);
}
@Test
public void testAddEventListener() throws Exception {
control.replay();
connect();
PeerEventListener listener = new AbstractPeerEventListener();
peer.addEventListener(listener);
assertTrue(peer.removeEventListener(listener));
assertFalse(peer.removeEventListener(listener));
}
// Check that the connection is shut down if there's a read error and that the exception is propagated.
@Test
public void testRun_exception() throws Exception {
expect(channel.close()).andReturn(null);
control.replay();
handler.exceptionCaught(ctx,
new DefaultExceptionEvent(channel, new IOException("proto")));
control.verify();
}
@Test
public void testRun_protocolException() throws Exception {
expect(channel.close()).andReturn(null);
replay(channel);
handler.exceptionCaught(ctx,
new DefaultExceptionEvent(channel, new ProtocolException("proto")));
verify(channel);
}
// Check that it runs through the event loop and shut down correctly
@Test
public void shutdown() throws Exception {
closePeer(peer);
}
@Test
public void chainDownloadEnd2End() throws Exception {
// A full end-to-end test of the chain download process, with a new block being solved in the middle.
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Block b2 = makeSolvedTestBlock(b1);
Block b3 = makeSolvedTestBlock(b2);
Block b4 = makeSolvedTestBlock(b3);
Block b5 = makeSolvedTestBlock(b4);
control.replay();
connect();
peer.startBlockChainDownload();
GetBlocksMessage getblocks = (GetBlocksMessage)outbound();
assertEquals(blockStore.getChainHead().getHeader().getHash(), getblocks.getLocator().get(0));
assertEquals(Sha256Hash.ZERO_HASH, getblocks.getStopHash());
// Remote peer sends us an inv with some blocks.
InventoryMessage inv = new InventoryMessage(unitTestParams);
inv.addBlock(b2);
inv.addBlock(b3);
// We do a getdata on them.
inbound(peer, inv);
GetDataMessage getdata = (GetDataMessage)outbound();
assertEquals(b2.getHash(), getdata.getItems().get(0).hash);
assertEquals(b3.getHash(), getdata.getItems().get(1).hash);
assertEquals(2, getdata.getItems().size());
// Remote peer sends us the blocks. The act of doing a getdata for b3 results in getting an inv with just the
// best chain head in it.
inbound(peer, b2);
inbound(peer, b3);
inv = new InventoryMessage(unitTestParams);
inv.addBlock(b5);
// We request the head block.
inbound(peer, inv);
getdata = (GetDataMessage)outbound();
assertEquals(b5.getHash(), getdata.getItems().get(0).hash);
assertEquals(1, getdata.getItems().size());
// Peer sends us the head block. The act of receiving the orphan block triggers a getblocks to fill in the
// rest of the chain.
inbound(peer, b5);
getblocks = (GetBlocksMessage)outbound();
assertEquals(b5.getHash(), getblocks.getStopHash());
assertEquals(b3.getHash(), getblocks.getLocator().get(0));
// At this point another block is solved and broadcast. The inv triggers a getdata but we do NOT send another
// getblocks afterwards, because that would result in us receiving the same set of blocks twice which is a
// timewaste. The getblocks message that would have been generated is set to be the same as the previous
// because we walk backwards down the orphan chain and then discover we already asked for those blocks, so
// nothing is done.
Block b6 = makeSolvedTestBlock(b5);
inv = new InventoryMessage(unitTestParams);
inv.addBlock(b6);
inbound(peer, inv);
getdata = (GetDataMessage)outbound();
assertEquals(1, getdata.getItems().size());
assertEquals(b6.getHash(), getdata.getItems().get(0).hash);
inbound(peer, b6);
assertFalse(event.hasCaptured()); // Nothing is sent at this point.
// We're still waiting for the response to the getblocks (b3,b5) sent above.
inv = new InventoryMessage(unitTestParams);
inv.addBlock(b4);
inv.addBlock(b5);
inbound(peer, inv);
getdata = (GetDataMessage)outbound();
assertEquals(1, getdata.getItems().size());
assertEquals(b4.getHash(), getdata.getItems().get(0).hash);
// We already have b5 from before, so it's not requested again.
inbound(peer, b4);
assertFalse(event.hasCaptured());
// b5 and b6 are now connected by the block chain and we're done.
closePeer(peer);
control.verify();
}
// Check that an inventory tickle is processed correctly when downloading missing blocks is active.
@Test
public void invTickle() throws Exception {
control.replay();
connect();
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
// Make a missing block.
Block b2 = makeSolvedTestBlock(b1);
Block b3 = makeSolvedTestBlock(b2);
inbound(peer, b3);
InventoryMessage inv = new InventoryMessage(unitTestParams);
InventoryItem item = new InventoryItem(InventoryItem.Type.Block, b3.getHash());
inv.addItem(item);
inbound(peer, inv);
GetBlocksMessage getblocks = (GetBlocksMessage)outbound();
List<Sha256Hash> expectedLocator = new ArrayList<Sha256Hash>();
expectedLocator.add(b1.getHash());
expectedLocator.add(unitTestParams.getGenesisBlock().getHash());
assertEquals(getblocks.getLocator(), expectedLocator);
assertEquals(getblocks.getStopHash(), b3.getHash());
control.verify();
}
// Check that an inv to a peer that is not set to download missing blocks does nothing.
@Test
public void invNoDownload() throws Exception {
// Don't download missing blocks.
peer.setDownloadData(false);
control.replay();
connect();
// Make a missing block that we receive.
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Block b2 = makeSolvedTestBlock(b1);
// Receive an inv.
InventoryMessage inv = new InventoryMessage(unitTestParams);
InventoryItem item = new InventoryItem(InventoryItem.Type.Block, b2.getHash());
inv.addItem(item);
inbound(peer, inv);
// Peer does nothing with it.
control.verify();
}
@Test
public void invDownloadTx() throws Exception {
control.replay();
connect();
peer.setDownloadData(true);
// Make a transaction and tell the peer we have it.
BigInteger value = Utils.toNanoCoins(1, 0);
Transaction tx = createFakeTx(unitTestParams, value, address);
InventoryMessage inv = new InventoryMessage(unitTestParams);
InventoryItem item = new InventoryItem(InventoryItem.Type.Transaction, tx.getHash());
inv.addItem(item);
inbound(peer, inv);
// Peer hasn't seen it before, so will ask for it.
GetDataMessage getdata = (GetDataMessage) outbound();
assertEquals(1, getdata.getItems().size());
assertEquals(tx.getHash(), getdata.getItems().get(0).hash);
inbound(peer, tx);
// Ask for the dependency, it's not in the mempool (in chain).
getdata = (GetDataMessage) outbound();
inbound(peer, new NotFoundMessage(unitTestParams, getdata.getItems()));
assertEquals(value, wallet.getBalance(Wallet.BalanceType.ESTIMATED));
}
@Test
public void invDownloadTxMultiPeer() throws Exception {
ChannelHandlerContext ctx2 = createChannelHandlerContext();
Channel channel2 = createChannel();
createPipeline(channel2);
control.replay();
// Check co-ordination of which peer to download via the memory pool.
MockNetworkConnection conn2 = createMockNetworkConnection();
VersionMessage ver = new VersionMessage(unitTestParams, 100);
Peer peer2 = new Peer(unitTestParams, blockChain, ver, memoryPool);
peer2.addWallet(wallet);
connect();
connect(peer2.getHandler(), channel2, ctx2, 70001);
// Make a tx and advertise it to one of the peers.
BigInteger value = Utils.toNanoCoins(1, 0);
Transaction tx = createFakeTx(unitTestParams, value, address);
InventoryMessage inv = new InventoryMessage(unitTestParams);
InventoryItem item = new InventoryItem(InventoryItem.Type.Transaction, tx.getHash());
inv.addItem(item);
inbound(peer, inv);
// We got a getdata message.
GetDataMessage message = (GetDataMessage)outbound();
assertEquals(1, message.getItems().size());
assertEquals(tx.getHash(), message.getItems().get(0).hash);
assertTrue(memoryPool.maybeWasSeen(tx.getHash()));
// Advertising to peer2 results in no getdata message.
conn2.inbound(inv);
assertFalse(event.hasCaptured());
}
// Check that inventory message containing blocks we want is processed correctly.
@Test
public void newBlock() throws Exception {
PeerEventListener listener = control.createMock(PeerEventListener.class);
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Block b2 = makeSolvedTestBlock(b1);
// Receive notification of a new block.
InventoryMessage inv = new InventoryMessage(unitTestParams);
InventoryItem item = new InventoryItem(InventoryItem.Type.Block, b2.getHash());
inv.addItem(item);
expect(listener.onPreMessageReceived(eq(peer), eq(inv))).andReturn(inv);
expect(listener.onPreMessageReceived(eq(peer), eq(b2))).andReturn(b2);
// The listener gets the delta between the first announced height and our height.
listener.onBlocksDownloaded(eq(peer), anyObject(Block.class), eq(OTHER_PEER_CHAIN_HEIGHT - 2));
expectLastCall();
control.replay();
connect();
peer.addEventListener(listener, Threading.SAME_THREAD);
long height = peer.getBestHeight();
inbound(peer, inv);
assertEquals(height + 1, peer.getBestHeight());
// Response to the getdata message.
inbound(peer, b2);
control.verify();
GetDataMessage getdata = (GetDataMessage) event.getValue().getMessage();
List<InventoryItem> items = getdata.getItems();
assertEquals(1, items.size());
assertEquals(b2.getHash(), items.get(0).hash);
assertEquals(InventoryItem.Type.Block, items.get(0).type);
}
// Check that it starts downloading the block chain correctly on request.
@Test
public void startBlockChainDownload() throws Exception {
PeerEventListener listener = control.createMock(PeerEventListener.class);
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Block b2 = makeSolvedTestBlock(b1);
blockChain.add(b2);
listener.onChainDownloadStarted(peer, 108);
expectLastCall();
control.replay();
connect();
peer.addEventListener(listener, Threading.SAME_THREAD);
peer.startBlockChainDownload();
control.verify();
List<Sha256Hash> expectedLocator = new ArrayList<Sha256Hash>();
expectedLocator.add(b2.getHash());
expectedLocator.add(b1.getHash());
expectedLocator.add(unitTestParams.getGenesisBlock().getHash());
GetBlocksMessage message = (GetBlocksMessage) event.getValue().getMessage();
assertEquals(message.getLocator(), expectedLocator);
assertEquals(Sha256Hash.ZERO_HASH, message.getStopHash());
}
@Test
public void getBlock() throws Exception {
control.replay();
connect();
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Block b2 = makeSolvedTestBlock(b1);
Block b3 = makeSolvedTestBlock(b2);
// Request the block.
Future<Block> resultFuture = peer.getBlock(b3.getHash());
assertFalse(resultFuture.isDone());
// Peer asks for it.
GetDataMessage message = (GetDataMessage) event.getValue().getMessage();
assertEquals(message.getItems().get(0).hash, b3.getHash());
assertFalse(resultFuture.isDone());
// Peer receives it.
inbound(peer, b3);
Block b = resultFuture.get();
assertEquals(b, b3);
}
@Test
public void fastCatchup() throws Exception {
control.replay();
connect();
// Check that blocks before the fast catchup point are retrieved using getheaders, and after using getblocks.
// This test is INCOMPLETE because it does not check we handle >2000 blocks correctly.
Block b1 = createFakeBlock(blockStore).block;
blockChain.add(b1);
Utils.rollMockClock(60 * 10); // 10 minutes later.
Block b2 = makeSolvedTestBlock(b1);
Utils.rollMockClock(60 * 10); // 10 minutes later.
Block b3 = makeSolvedTestBlock(b2);
Utils.rollMockClock(60 * 10);
Block b4 = makeSolvedTestBlock(b3);
// Request headers until the last 2 blocks.
peer.setDownloadParameters((Utils.now().getTime() / 1000) - (600*2) + 1, false);
peer.startBlockChainDownload();
GetHeadersMessage getheaders = (GetHeadersMessage) outbound();
List<Sha256Hash> expectedLocator = new ArrayList<Sha256Hash>();
expectedLocator.add(b1.getHash());
expectedLocator.add(unitTestParams.getGenesisBlock().getHash());
assertEquals(getheaders.getLocator(), expectedLocator);
assertEquals(getheaders.getStopHash(), Sha256Hash.ZERO_HASH);
// Now send all the headers.
HeadersMessage headers = new HeadersMessage(unitTestParams, b2.cloneAsHeader(),
b3.cloneAsHeader(), b4.cloneAsHeader());
// We expect to be asked for b3 and b4 again, but this time, with a body.
expectedLocator.clear();
expectedLocator.add(b2.getHash());
expectedLocator.add(b1.getHash());
expectedLocator.add(unitTestParams.getGenesisBlock().getHash());
inbound(peer, headers);
GetBlocksMessage getblocks = (GetBlocksMessage) outbound();
assertEquals(expectedLocator, getblocks.getLocator());
assertEquals(Sha256Hash.ZERO_HASH, getblocks.getStopHash());
// We're supposed to get an inv here.
InventoryMessage inv = new InventoryMessage(unitTestParams);
inv.addItem(new InventoryItem(InventoryItem.Type.Block, b3.getHash()));
inbound(peer, inv);
GetDataMessage getdata = (GetDataMessage) event.getValue().getMessage();
assertEquals(b3.getHash(), getdata.getItems().get(0).hash);
// All done.
inbound(peer, b3);
}
@Test
public void pingPong() throws Exception {
control.replay();
connect();
Utils.rollMockClock(0);
// No ping pong happened yet.
assertEquals(Long.MAX_VALUE, peer.getLastPingTime());
assertEquals(Long.MAX_VALUE, peer.getPingTime());
ListenableFuture<Long> future = peer.ping();
Ping pingMsg = (Ping) outbound();
assertEquals(Long.MAX_VALUE, peer.getLastPingTime());
assertEquals(Long.MAX_VALUE, peer.getPingTime());
assertFalse(future.isDone());
Utils.rollMockClock(5);
// The pong is returned.
inbound(peer, new Pong(pingMsg.getNonce()));
assertTrue(future.isDone());
long elapsed = future.get();
assertTrue("" + elapsed, elapsed > 1000);
assertEquals(elapsed, peer.getLastPingTime());
assertEquals(elapsed, peer.getPingTime());
// Do it again and make sure it affects the average.
future = peer.ping();
pingMsg = (Ping) outbound();
Utils.rollMockClock(50);
inbound(peer, new Pong(pingMsg.getNonce()));
elapsed = future.get();
assertEquals(elapsed, peer.getLastPingTime());
assertEquals(7250, peer.getPingTime());
}
@Test
public void recursiveDownloadNew() throws Exception {
recursiveDownload(true);
}
@Test
public void recursiveDownloadOld() throws Exception {
recursiveDownload(false);
}
public void recursiveDownload(boolean useNotFound) throws Exception {
// Using ping or notfound?
control.replay();
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(peer, inv);
GetDataMessage getdata = (GetDataMessage) outbound();
assertEquals(t1.getHash(), getdata.getItems().get(0).hash);
inbound(peer, t1);
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();
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()).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(peer, t4);
// Deliver the requested transactions.
inbound(peer, t2);
inbound(peer, 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(peer, notFound);
} else {
inbound(peer, 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();
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(peer, notFound);
} else {
bouncePing();
}
assertFalse(futures.isDone());
// Continue to explore the t4 branch and ask for t6, which is in the chain.
getdata = (GetDataMessage) outbound();
assertEquals(t6, getdata.getItems().get(0).hash);
if (useNotFound) {
NotFoundMessage notFound = new NotFoundMessage(unitTestParams);
notFound.addItem(new InventoryItem(InventoryItem.Type.Transaction, t6));
inbound(peer, notFound);
} else {
bouncePing();
}
// 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));
}
private void bouncePing() throws Exception {
Ping ping = (Ping) outbound();
inbound(peer, new Pong(ping.getNonce()));
}
@Test
public void timeLockedTransactionNew() throws Exception {
timeLockedTransaction(true);
}
@Test
public void timeLockedTransactionOld() throws Exception {
timeLockedTransaction(false);
}
public void timeLockedTransaction(boolean useNotFound) throws Exception {
control.replay();
connectWithVersion(useNotFound ? 70001 : 60001);
// Test that if we receive a relevant transaction that has a lock time, it doesn't result in a notification
// until we explicitly opt in to seeing those.
ECKey key = new ECKey();
Wallet wallet = new Wallet(unitTestParams);
wallet.addKey(key);
peer.addWallet(wallet);
final Transaction[] vtx = new Transaction[1];
wallet.addEventListener(new AbstractWalletEventListener() {
@Override
public void onCoinsReceived(Wallet wallet, Transaction tx, BigInteger prevBalance, BigInteger newBalance) {
vtx[0] = tx;
}
});
// Send a normal relevant transaction, it's received correctly.
Transaction t1 = TestUtils.createFakeTx(unitTestParams, Utils.toNanoCoins(1, 0), key);
inbound(peer, t1);
GetDataMessage getdata = (GetDataMessage) outbound();
if (useNotFound) {
inbound(peer, new NotFoundMessage(unitTestParams, getdata.getItems()));
} else {
bouncePing();
}
Threading.waitForUserCode();
assertNotNull(vtx[0]);
vtx[0] = null;
// Send a timelocked transaction, nothing happens.
Transaction t2 = TestUtils.createFakeTx(unitTestParams, Utils.toNanoCoins(2, 0), key);
t2.setLockTime(999999);
inbound(peer, t2);
Threading.waitForUserCode();
assertNull(vtx[0]);
// Now we want to hear about them. Send another, we are told about it.
wallet.setAcceptTimeLockedTransactions(true);
inbound(peer, t2);
getdata = (GetDataMessage) outbound();
if (useNotFound) {
inbound(peer, new NotFoundMessage(unitTestParams, getdata.getItems()));
} else {
bouncePing();
}
Threading.waitForUserCode();
assertEquals(t2, vtx[0]);
}
@Test
public void rejectTimeLockedDependencyNew() throws Exception {
// Check that we also verify the lock times of dependencies. Otherwise an attacker could still build a tx that
// looks legitimate and useful but won't actually ever confirm, by sending us a normal tx that spends a
// timelocked tx.
checkTimeLockedDependency(false, true);
}
@Test
public void acceptTimeLockedDependencyNew() throws Exception {
checkTimeLockedDependency(true, true);
}
@Test
public void rejectTimeLockedDependencyOld() throws Exception {
// Check that we also verify the lock times of dependencies. Otherwise an attacker could still build a tx that
// looks legitimate and useful but won't actually ever confirm, by sending us a normal tx that spends a
// timelocked tx.
checkTimeLockedDependency(false, false);
}
@Test
public void acceptTimeLockedDependencyOld() throws Exception {
checkTimeLockedDependency(true, false);
}
private void checkTimeLockedDependency(boolean shouldAccept, boolean useNotFound) throws Exception {
// Initial setup.
control.replay();
connectWithVersion(useNotFound ? 70001 : 60001);
ECKey key = new ECKey();
Wallet wallet = new Wallet(unitTestParams);
wallet.addKey(key);
wallet.setAcceptTimeLockedTransactions(shouldAccept);
peer.addWallet(wallet);
final Transaction[] vtx = new Transaction[1];
wallet.addEventListener(new AbstractWalletEventListener() {
@Override
public void onCoinsReceived(Wallet wallet, Transaction tx, BigInteger prevBalance, BigInteger newBalance) {
vtx[0] = tx;
}
});
// t1 -> t2 [locked] -> t3 (not available)
Transaction t2 = new Transaction(unitTestParams);
t2.setLockTime(999999);
// Add a fake input to t3 that goes nowhere.
Sha256Hash t3 = Sha256Hash.create("abc".getBytes(Charset.forName("UTF-8")));
t2.addInput(new TransactionInput(unitTestParams, t2, new byte[]{}, new TransactionOutPoint(unitTestParams, 0, t3)));
t2.getInput(0).setSequenceNumber(0xDEADBEEF);
t2.addOutput(Utils.toNanoCoins(1, 0), new ECKey());
Transaction t1 = new Transaction(unitTestParams);
t1.addInput(t2.getOutput(0));
t1.addOutput(Utils.toNanoCoins(1, 0), key); // Make it relevant.
// Announce t1.
InventoryMessage inv = new InventoryMessage(unitTestParams);
inv.addTransaction(t1);
inbound(peer, inv);
// Send it.
GetDataMessage getdata = (GetDataMessage) outbound();
assertEquals(t1.getHash(), getdata.getItems().get(0).hash);
inbound(peer, t1);
// Nothing arrived at our event listener yet.
assertNull(vtx[0]);
// We request t2.
getdata = (GetDataMessage) outbound();
assertEquals(t2.getHash(), getdata.getItems().get(0).hash);
inbound(peer, t2);
if (!useNotFound)
bouncePing();
// We request t3.
getdata = (GetDataMessage) outbound();
assertEquals(t3, getdata.getItems().get(0).hash);
// Can't find it: bottom of tree.
if (useNotFound) {
NotFoundMessage notFound = new NotFoundMessage(unitTestParams);
notFound.addItem(new InventoryItem(InventoryItem.Type.Transaction, t3));
inbound(peer, notFound);
} else {
bouncePing();
}
Threading.waitForUserCode();
// We're done but still not notified because it was timelocked.
if (shouldAccept)
assertNotNull(vtx[0]);
else
assertNull(vtx[0]);
}
@Test
public void disconnectOldVersions1() throws Exception {
expect(channel.close()).andReturn(null);
control.replay();
// Set up the connection with an old version.
handler.connectRequested(ctx, new UpstreamChannelStateEvent(channel, ChannelState.CONNECTED, socketAddress));
VersionMessage peerVersion = new VersionMessage(unitTestParams, OTHER_PEER_CHAIN_HEIGHT);
peerVersion.clientVersion = 500;
DownstreamMessageEvent versionEvent =
new DownstreamMessageEvent(channel, Channels.future(channel), peerVersion, null);
handler.messageReceived(ctx, versionEvent);
}
@Test
public void disconnectOldVersions2() throws Exception {
expect(channel.close()).andReturn(null);
control.replay();
// Set up the connection with an old version.
handler.connectRequested(ctx, new UpstreamChannelStateEvent(channel, ChannelState.CONNECTED, socketAddress));
VersionMessage peerVersion = new VersionMessage(unitTestParams, OTHER_PEER_CHAIN_HEIGHT);
peerVersion.clientVersion = 70000;
DownstreamMessageEvent versionEvent =
new DownstreamMessageEvent(channel, Channels.future(channel), peerVersion, null);
handler.messageReceived(ctx, versionEvent);
peer.setMinProtocolVersion(500);
}
@Test
public void exceptionListener() throws Exception {
wallet.addEventListener(new AbstractWalletEventListener() {
@Override
public void onCoinsReceived(Wallet wallet, Transaction tx, BigInteger prevBalance, BigInteger newBalance) {
throw new NullPointerException("boo!");
}
});
final Throwable[] throwables = new Throwable[1];
Threading.uncaughtExceptionHandler = new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread thread, Throwable throwable) {
throwables[0] = throwable;
}
};
// In real usage we're not really meant to adjust the uncaught exception handler after stuff started happening
// but in the unit test environment other tests have just run so the thread is probably still kicking around.
// Force it to crash so it'll be recreated with our new handler.
Threading.USER_THREAD.execute(new Runnable() {
@Override
public void run() {
throw new RuntimeException();
}
});
control.replay();
connect();
Transaction t1 = new Transaction(unitTestParams);
t1.addInput(new TransactionInput(unitTestParams, t1, new byte[]{}));
t1.addOutput(Utils.toNanoCoins(1, 0), new ECKey().toAddress(unitTestParams));
Transaction t2 = new Transaction(unitTestParams);
t2.addInput(t1.getOutput(0));
t2.addOutput(Utils.toNanoCoins(1, 0), wallet.getChangeAddress());
inbound(peer, t2);
final InventoryItem inventoryItem = new InventoryItem(InventoryItem.Type.Transaction, t2.getInput(0).getOutpoint().getHash());
final NotFoundMessage nfm = new NotFoundMessage(unitTestParams, Lists.newArrayList(inventoryItem));
inbound(peer, nfm);
Threading.waitForUserCode();
assertTrue(throwables[0] instanceof NullPointerException);
Threading.uncaughtExceptionHandler = null;
}
@Test
public void badMessage() throws Exception {
// Bring up an actual network connection and feed it bogus data.
final SettableFuture<Void> result = SettableFuture.create();
Threading.uncaughtExceptionHandler = new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread thread, Throwable throwable) {
result.setException(throwable);
}
};
ServerSocket server = new ServerSocket(0);
final NetworkParameters params = TestNet3Params.testNet();
Peer peer = new Peer(params, blockChain, "test", "1.0");
ListenableFuture<TCPNetworkConnection> future = TCPNetworkConnection.connectTo(TestNet3Params.get(),
new InetSocketAddress(InetAddress.getLocalHost(), server.getLocalPort()), 5000, peer);
Socket socket = server.accept();
// Write out a verack+version.
BitcoinSerializer serializer = new BitcoinSerializer(params);
final VersionMessage ver = new VersionMessage(params, 1000);
ver.localServices = VersionMessage.NODE_NETWORK;
serializer.serialize(ver, socket.getOutputStream());
serializer.serialize(new VersionAck(), socket.getOutputStream());
// Now write some bogus truncated message.
serializer.serialize("inv", new InventoryMessage(params) {
@Override
public void bitcoinSerializeToStream(OutputStream stream) throws IOException {
// Add some hashes.
addItem(new InventoryItem(InventoryItem.Type.Transaction, Sha256Hash.create(new byte[] { 1 })));
addItem(new InventoryItem(InventoryItem.Type.Transaction, Sha256Hash.create(new byte[] { 2 })));
addItem(new InventoryItem(InventoryItem.Type.Transaction, Sha256Hash.create(new byte[] { 3 })));
// Write out a copy that's truncated in the middle.
ByteArrayOutputStream bos = new ByteArrayOutputStream();
super.bitcoinSerializeToStream(bos);
byte[] bits = bos.toByteArray();
bits = Arrays.copyOf(bits, bits.length / 2);
stream.write(bits);
}
}.bitcoinSerialize(), socket.getOutputStream());
try {
result.get();
fail();
} catch (ExecutionException e) {
assertTrue(e.getCause() instanceof ProtocolException);
}
}
// TODO: Use generics here to avoid unnecessary casting.
private Message outbound() {
List<DownstreamMessageEvent> messages = event.getValues();
if (messages.isEmpty())
throw new AssertionError("No messages sent when one was expected");
Message message = (Message)messages.get(0).getMessage();
messages.remove(0);
return message;
}
}