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VersionMessage: Add support for BIP111 (NODE_BLOOM service bit).

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This commit is contained in:
Andreas Schildbach 2019-01-31 12:45:42 +01:00
parent d35583236a
commit dceb2a4261
4 changed files with 22 additions and 12 deletions
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3
core/src/main/java/org/bitcoinj/core/NetworkParameters.java
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@ -516,7 +516,8 @@ public abstract class NetworkParameters {
public static enum ProtocolVersion {
MINIMUM(70000),
PONG(60001),
BLOOM_FILTER(70000),
BLOOM_FILTER(70000), // BIP37
BLOOM_FILTER_BIP111(70011), // BIP111
WITNESS_VERSION(70012),
CURRENT(70012);

4
core/src/main/java/org/bitcoinj/core/Peer.java
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@ -420,6 +420,10 @@ public class Peer extends PeerSocketHandler {
a.add("GETUTXOS");
services &= ~VersionMessage.NODE_GETUTXOS;
}
if ((services & VersionMessage.NODE_BLOOM) == VersionMessage.NODE_BLOOM) {
a.add("BLOOM");
services &= ~VersionMessage.NODE_BLOOM;
}
if ((services & VersionMessage.NODE_WITNESS) == VersionMessage.NODE_WITNESS) {
a.add("WITNESS");
services &= ~VersionMessage.NODE_WITNESS;

13
core/src/main/java/org/bitcoinj/core/VersionMessage.java
View file

@ -49,6 +49,8 @@ public class VersionMessage extends Message {
public static final int NODE_NETWORK = 1 << 0;
/** A service bit that denotes whether the peer supports the getutxos message or not. */
public static final int NODE_GETUTXOS = 1 << 1;
/** A service bit that denotes whether the peer supports BIP37 bloom filters or not. The service bit is defined in BIP111. */
public static final int NODE_BLOOM = 1 << 2;
/** Indicates that a node can be asked for blocks and transactions including witness data. */
public static final int NODE_WITNESS = 1 << 3;
/** A service bit that denotes whether the peer has at least the last two days worth of blockchain (BIP159). */
@ -273,12 +275,15 @@ public class VersionMessage extends Message {
}
/**
* Returns true if the clientVersion field is {@link NetworkParameters.ProtocolVersion#BLOOM_FILTER} or higher.
* If it is then Bloom filtering
* is available and the memory pool of the remote peer will be queried when the downloadData property is true.
* Returns true if the peer supports bloom filtering according to BIP37 and BIP111.
*/
public boolean isBloomFilteringSupported() {
return clientVersion >= params.getProtocolVersionNum(NetworkParameters.ProtocolVersion.BLOOM_FILTER);
if (clientVersion >= params.getProtocolVersionNum(NetworkParameters.ProtocolVersion.BLOOM_FILTER)
&& clientVersion < params.getProtocolVersionNum(NetworkParameters.ProtocolVersion.BLOOM_FILTER_BIP111))
return true;
if ((localServices & NODE_BLOOM) == NODE_BLOOM)
return true;
return false;
}
/** Returns true if the protocol version and service bits both indicate support for the getutxos message. */

14
core/src/test/java/org/bitcoinj/core/PeerGroupTest.java
View file

@ -688,24 +688,24 @@ public class PeerGroupTest extends TestWithPeerGroup {
@Test
public void waitForPeersOfVersion() throws Exception {
final int baseVer = peerGroup.getMinRequiredProtocolVersion() + 3000;
final int newVer = baseVer + 1000;
final int bip37ver = UNITTEST.getProtocolVersionNum(NetworkParameters.ProtocolVersion.BLOOM_FILTER);
final int bip111ver = UNITTEST.getProtocolVersionNum(NetworkParameters.ProtocolVersion.BLOOM_FILTER_BIP111);
ListenableFuture<List<Peer>> future = peerGroup.waitForPeersOfVersion(2, newVer);
ListenableFuture<List<Peer>> future = peerGroup.waitForPeersOfVersion(2, bip111ver);
VersionMessage ver1 = new VersionMessage(UNITTEST, 10);
ver1.clientVersion = baseVer;
ver1.clientVersion = bip37ver;
ver1.localServices = VersionMessage.NODE_NETWORK;
VersionMessage ver2 = new VersionMessage(UNITTEST, 10);
ver2.clientVersion = newVer;
ver2.localServices = VersionMessage.NODE_NETWORK;
ver2.clientVersion = bip111ver;
ver2.localServices = VersionMessage.NODE_NETWORK | VersionMessage.NODE_BLOOM;
peerGroup.start();
assertFalse(future.isDone());
connectPeer(1, ver1);
assertFalse(future.isDone());
connectPeer(2, ver2);
assertFalse(future.isDone());
assertTrue(peerGroup.waitForPeersOfVersion(1, newVer).isDone()); // Immediate completion.
assertTrue(peerGroup.waitForPeersOfVersion(1, bip111ver).isDone()); // Immediate completion.
connectPeer(3, ver2);
future.get();
assertTrue(future.isDone());