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Add a double spending test program

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This commit is contained in:
Mike Hearn 2014-04-15 13:35:11 +02:00
parent f19741d2ab
commit 0942bb57b5
1 changed files with 47 additions and 0 deletions
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examples/src/main/java/com/google/bitcoin/examples/DoubleSpend.java Normal file
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package com.google.bitcoin.examples;
import com.google.bitcoin.core.*;
import com.google.bitcoin.kits.WalletAppKit;
import com.google.bitcoin.params.RegTestParams;
import com.google.bitcoin.utils.BriefLogFormatter;
import com.google.bitcoin.utils.Threading;
import java.io.File;
import java.math.BigInteger;
/**
* This is a little test app that waits for a coin on a local regtest node, then generates two transactions that double
* spend the same output and sends them. It's useful for testing double spend codepaths but is otherwise not something
* you would normally want to do.
*/
public class DoubleSpend {
public static void main(String[] args) throws Exception {
BriefLogFormatter.init();
final RegTestParams params = RegTestParams.get();
WalletAppKit kit = new WalletAppKit(params, new File("."), "doublespend");
kit.connectToLocalHost();
kit.setAutoSave(false);
kit.startAsync();
kit.awaitRunning();
System.out.println(kit.wallet());
kit.wallet().getBalanceFuture(Utils.COIN, Wallet.BalanceType.AVAILABLE).get();
Transaction tx1 = kit.wallet().createSend(new Address(params, "muYPFNCv7KQEG2ZLM7Z3y96kJnNyXJ53wm"), Utils.CENT);
Transaction tx2 = kit.wallet().createSend(new Address(params, "muYPFNCv7KQEG2ZLM7Z3y96kJnNyXJ53wm"), Utils.CENT.add(BigInteger.TEN));
final Peer peer = kit.peerGroup().getConnectedPeers().get(0);
peer.addEventListener(new AbstractPeerEventListener() {
@Override
public Message onPreMessageReceived(Peer peer, Message m) {
System.err.println("Got a message!" + m.getClass().getSimpleName() + ": " + m);
return m;
}
}, Threading.SAME_THREAD);
peer.sendMessage(tx1);
peer.sendMessage(tx2);
Thread.sleep(5000);
kit.stopAsync();
kit.awaitTerminated();
}
}