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Netty network stack.

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This should resolve some scalability and robustness issues.
This commit is contained in:
Miron Cuperman
2012-04-01 18:37:21 -07:00
committed by Mike Hearn
parent 2d8f25a2da
commit fa10523007
14 changed files with 915 additions and 693 deletions
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33
examples/src/main/java/com/google/bitcoin/examples/FetchBlock.java
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@@ -21,35 +21,44 @@ import com.google.bitcoin.store.BlockStore;
import com.google.bitcoin.store.MemoryBlockStore;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Future;
import org.jboss.netty.channel.ChannelFuture;
/**
* Downloads the block given a block hash from the localhost node and prints it out.
*/
public class FetchBlock {
public static void main(String[] args) throws Exception {
System.out.println("Connecting to node");
final NetworkParameters params = NetworkParameters.prodNet();
final NetworkParameters params = NetworkParameters.testNet();
BlockStore blockStore = new MemoryBlockStore(params);
BlockChain chain = new BlockChain(params, blockStore);
final Peer peer = new Peer(params, new PeerAddress(InetAddress.getLocalHost()), chain);
peer.connect();
new Thread(new Runnable() {
public void run() {
try {
peer.run();
} catch (PeerException e) {
throw new RuntimeException(e);
}
PeerGroup peerGroup = new PeerGroup(params, chain);
peerGroup.start();
final CountDownLatch latch = new CountDownLatch(1);
peerGroup.addEventListener(new AbstractPeerEventListener() {
@Override
public void onPeerConnected(Peer peer, int peerCount) {
latch.countDown();
}
}).start();
});
ChannelFuture channelFuture =
peerGroup.connectTo(new InetSocketAddress(InetAddress.getLocalHost(), params.port));
latch.await();
Peer peer = PeerGroup.peerFromChannelFuture(channelFuture);
Sha256Hash blockHash = new Sha256Hash(args[0]);
Future<Block> future = peer.getBlock(blockHash);
System.out.println("Waiting for node to send us the requested block: " + blockHash);
Block block = future.get();
System.out.println(block);
peer.disconnect();
peerGroup.stop();
}
}

75
examples/src/main/java/com/google/bitcoin/examples/PrintPeers.java
View File

@@ -16,21 +16,26 @@
package com.google.bitcoin.examples;
import com.google.bitcoin.core.NetworkConnection;
import com.google.bitcoin.core.NetworkParameters;
import com.google.bitcoin.core.PeerAddress;
import com.google.bitcoin.core.TCPNetworkConnection;
import com.google.bitcoin.discovery.DnsDiscovery;
import com.google.bitcoin.discovery.IrcDiscovery;
import com.google.bitcoin.discovery.PeerDiscoveryException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.jboss.netty.bootstrap.ClientBootstrap;
import org.jboss.netty.channel.*;
import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
import com.google.bitcoin.core.Message;
import com.google.bitcoin.core.NetworkParameters;
import com.google.bitcoin.core.TCPNetworkConnection;
import com.google.bitcoin.core.VersionMessage;
import com.google.bitcoin.discovery.DnsDiscovery;
import com.google.bitcoin.discovery.IrcDiscovery;
import com.google.bitcoin.discovery.PeerDiscoveryException;
/**
* Prints a list of IP addresses connected to the rendezvous point on the LFnet IRC channel.
*/
@@ -51,7 +56,7 @@ public class PrintPeers {
private static void printIRC() throws PeerDiscoveryException {
long start = System.currentTimeMillis();
IrcDiscovery d = new IrcDiscovery("#bitcoin") {
IrcDiscovery d = new IrcDiscovery("#bitcoinTEST") {
@Override
protected void onIRCReceive(String message) {
System.out.println("<- " + message);
@@ -88,26 +93,50 @@ public class PrintPeers {
for (InetSocketAddress peer : ircPeers) addrs.add(peer.getAddress());
System.out.println("Scanning " + addrs.size() + " peers:");
final NetworkParameters params = NetworkParameters.testNet();
final Object lock = new Object();
final long[] bestHeight = new long[1];
final ClientBootstrap bootstrap = new ClientBootstrap(
new NioClientSocketChannelFactory(
Executors.newCachedThreadPool(),
Executors.newCachedThreadPool()));
for (final InetAddress addr : addrs) {
pool.submit(new Runnable() {
public void run() {
try {
NetworkConnection conn =
new TCPNetworkConnection(NetworkParameters.prodNet(), 0);
conn.connect(new PeerAddress(addr), 1000);
synchronized (lock) {
long nodeHeight = conn.getVersionMessage().bestHeight;
long diff = bestHeight[0] - nodeHeight;
if (diff > 0) {
System.out.println("Node is behind by " + diff + " blocks: " + addr.toString());
} else {
bestHeight[0] = nodeHeight;
}
}
conn.shutdown();
ChannelPipeline pipeline = Channels.pipeline();
final CountDownLatch latch = new CountDownLatch(1);
TCPNetworkConnection conn =
new TCPNetworkConnection(params, new VersionMessage(params, 0));
pipeline.addLast("codec", conn);
pipeline.addLast("peer", new SimpleChannelHandler() {
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
Message m = (Message)e.getMessage();
if (m instanceof VersionMessage) {
VersionMessage ver = (VersionMessage)m;
long nodeHeight = ver.bestHeight;
synchronized (lock) {
long diff = bestHeight[0] - nodeHeight;
if (diff > 0) {
System.out.println("Node is behind by " + diff + " blocks: " + addr.toString());
} else {
bestHeight[0] = nodeHeight;
}
}
e.getChannel().close();
latch.countDown();
}
};
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
System.err.println(addr.toString() + " : " + e.getCause().getMessage());
latch.countDown();
};
});
bootstrap.setPipeline(pipeline);
bootstrap.connect(new InetSocketAddress(addr, params.port));
latch.await();
} catch (Exception e) {
}
}