Ejemplo n.º 1
0
 private void checkTimeLockedDependency(boolean shouldAccept, boolean useNotFound)
     throws Exception {
   // Initial setup.
   connectWithVersion(useNotFound ? 70001 : 60001);
   ECKey key = new ECKey();
   Wallet wallet = new Wallet(unitTestParams);
   wallet.addKey(key);
   wallet.setAcceptRiskyTransactions(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(writeTarget, inv);
   // Send it.
   GetDataMessage getdata = (GetDataMessage) outbound(writeTarget);
   assertEquals(t1.getHash(), getdata.getItems().get(0).hash);
   inbound(writeTarget, t1);
   // Nothing arrived at our event listener yet.
   assertNull(vtx[0]);
   // We request t2.
   getdata = (GetDataMessage) outbound(writeTarget);
   assertEquals(t2.getHash(), getdata.getItems().get(0).hash);
   inbound(writeTarget, t2);
   if (!useNotFound) bouncePing();
   // We request t3.
   getdata = (GetDataMessage) outbound(writeTarget);
   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(writeTarget, notFound);
   } else {
     bouncePing();
   }
   pingAndWait(writeTarget);
   Threading.waitForUserCode();
   // We're done but still not notified because it was timelocked.
   if (shouldAccept) assertNotNull(vtx[0]);
   else assertNull(vtx[0]);
 }
Ejemplo n.º 2
0
  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));
  }