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Add a create method to Sha256Hash.

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Don't deserialize block or tx messages that were already seen, to avoid wasting battery and causing memory spikes that can trigger OOM conditions. Updates issue 73.
This commit is contained in:
Mike Hearn
2011-09-15 16:11:32 +00:00
parent 10b40cbb48
commit 0315b3a5e6
5 changed files with 151 additions and 26 deletions
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50
tests/com/google/bitcoin/core/BitcoinSerializerTest.java
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@@ -21,14 +21,39 @@ import org.bouncycastle.util.encoders.Hex;
import org.junit.Test;
import java.io.ByteArrayInputStream;
import java.util.LinkedHashMap;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
public class BitcoinSerializerTest {
private final byte[] addrMessage = Hex.decode("f9beb4d96164647200000000000000001f000000" +
"ed52399b01e215104d010000000000000000000000000000000000ffff0a000001208d");
private final byte[] txMessage = Hex.decode(
"F9 BE B4 D9 74 78 00 00 00 00 00 00 00 00 00 00" +
"02 01 00 00 E2 93 CD BE 01 00 00 00 01 6D BD DB" +
"08 5B 1D 8A F7 51 84 F0 BC 01 FA D5 8D 12 66 E9" +
"B6 3B 50 88 19 90 E4 B4 0D 6A EE 36 29 00 00 00" +
"00 8B 48 30 45 02 21 00 F3 58 1E 19 72 AE 8A C7" +
"C7 36 7A 7A 25 3B C1 13 52 23 AD B9 A4 68 BB 3A" +
"59 23 3F 45 BC 57 83 80 02 20 59 AF 01 CA 17 D0" +
"0E 41 83 7A 1D 58 E9 7A A3 1B AE 58 4E DE C2 8D" +
"35 BD 96 92 36 90 91 3B AE 9A 01 41 04 9C 02 BF" +
"C9 7E F2 36 CE 6D 8F E5 D9 40 13 C7 21 E9 15 98" +
"2A CD 2B 12 B6 5D 9B 7D 59 E2 0A 84 20 05 F8 FC" +
"4E 02 53 2E 87 3D 37 B9 6F 09 D6 D4 51 1A DA 8F" +
"14 04 2F 46 61 4A 4C 70 C0 F1 4B EF F5 FF FF FF" +
"FF 02 40 4B 4C 00 00 00 00 00 19 76 A9 14 1A A0" +
"CD 1C BE A6 E7 45 8A 7A BA D5 12 A9 D9 EA 1A FB" +
"22 5E 88 AC 80 FA E9 C7 00 00 00 00 19 76 A9 14" +
"0E AB 5B EA 43 6A 04 84 CF AB 12 48 5E FD A0 B7" +
"8B 4E CC 52 88 AC 00 00 00 00");
public class BitcoinSerializerTest
{
@Test
public void testVersion() throws Exception {
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), false);
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), false, null);
// the actual data from https://en.bitcoin.it/wiki/Protocol_specification#version
ByteArrayInputStream bais = new ByteArrayInputStream(Hex.decode("f9beb4d976657273696f6e0000000000550000009" +
"c7c00000100000000000000e615104d00000000010000000000000000000000000000000000ffff0a000001daf6010000" +
@@ -42,7 +67,7 @@ public class BitcoinSerializerTest
@Test
public void testVerack() throws Exception {
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), false);
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), false, null);
// the actual data from https://en.bitcoin.it/wiki/Protocol_specification#verack
ByteArrayInputStream bais = new ByteArrayInputStream(Hex.decode("f9beb4d976657261636b00000000000000000000"));
VersionAck va = (VersionAck)bs.deserialize(bais);
@@ -51,14 +76,25 @@ public class BitcoinSerializerTest
@Test
public void testAddr() throws Exception {
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), true);
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), true, null);
// the actual data from https://en.bitcoin.it/wiki/Protocol_specification#addr
ByteArrayInputStream bais = new ByteArrayInputStream(Hex.decode("f9beb4d96164647200000000000000001f000000" +
"ed52399b01e215104d010000000000000000000000000000000000ffff0a000001208d"));
ByteArrayInputStream bais = new ByteArrayInputStream(addrMessage);
AddressMessage a = (AddressMessage)bs.deserialize(bais);
assertEquals(1, a.addresses.size());
PeerAddress pa = a.addresses.get(0);
assertEquals(8333, pa.port);
assertEquals("10.0.0.1", pa.addr.getHostAddress());
}
@Test
public void testDeduplication() throws Exception {
LinkedHashMap<Sha256Hash, Integer> dedupeList = BitcoinSerializer.createDedupeList();
BitcoinSerializer bs = new BitcoinSerializer(NetworkParameters.prodNet(), true, dedupeList);
ByteArrayInputStream bais = new ByteArrayInputStream(txMessage);
Transaction tx = (Transaction)bs.deserialize(bais);
assertNotNull(tx);
bais.reset();
tx = (Transaction)bs.deserialize(bais);
assertNull(tx);
}
}