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Add support for IPv4 link-local addresses.

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This commit is contained in:
akwizgran
2019-10-03 10:59:56 +01:00
parent eb562f8f6b
commit ed13cbca6a
2 changed files with 37 additions and 38 deletions
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34
bramble-core/src/test/java/org/briarproject/bramble/plugin/tcp/LanTcpPluginTest.java
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@@ -73,6 +73,8 @@ public class LanTcpPluginTest extends BrambleTestCase {
makeAddress(10, 255, 255, 255)));
assertFalse(plugin.addressesAreOnSameLan(makeAddress(192, 168, 0, 0),
makeAddress(172, 31, 255, 255)));
assertFalse(plugin.addressesAreOnSameLan(makeAddress(169, 254, 0, 0),
makeAddress(192, 168, 255, 255)));
// Remote prefix unrecognised should return false
assertFalse(plugin.addressesAreOnSameLan(makeAddress(10, 0, 0, 0),
makeAddress(1, 2, 3, 4)));
@@ -80,8 +82,8 @@ public class LanTcpPluginTest extends BrambleTestCase {
makeAddress(1, 2, 3, 4)));
assertFalse(plugin.addressesAreOnSameLan(makeAddress(192, 168, 0, 0),
makeAddress(1, 2, 3, 4)));
// Both prefixes unrecognised should return true (could be link-local)
assertTrue(plugin.addressesAreOnSameLan(makeAddress(1, 2, 3, 4),
// Both prefixes unrecognised should return false
assertFalse(plugin.addressesAreOnSameLan(makeAddress(1, 2, 3, 4),
makeAddress(5, 6, 7, 8)));
}
@@ -292,41 +294,33 @@ public class LanTcpPluginTest extends BrambleTestCase {
@Test
public void testComparatorPrefersLongerPrefixes() {
Comparator<InetSocketAddress> comparator = new LanAddressComparator();
InetSocketAddress prefix169 = new InetSocketAddress("169.254.0.1", 0);
InetSocketAddress prefix192 = new InetSocketAddress("192.168.0.1", 0);
InetSocketAddress prefix172 = new InetSocketAddress("172.16.0.1", 0);
InetSocketAddress prefix10 = new InetSocketAddress("10.0.0.1", 0);
assertEquals(0, comparator.compare(prefix169, prefix169));
assertEquals(0, comparator.compare(prefix169, prefix192));
assertTrue(comparator.compare(prefix169, prefix172) < 0);
assertTrue(comparator.compare(prefix169, prefix10) < 0);
assertEquals(0, comparator.compare(prefix192, prefix192));
assertEquals(0, comparator.compare(prefix192, prefix169));
assertTrue(comparator.compare(prefix192, prefix172) < 0);
assertTrue(comparator.compare(prefix192, prefix10) < 0);
assertTrue(comparator.compare(prefix172, prefix169) > 0);
assertTrue(comparator.compare(prefix172, prefix192) > 0);
assertEquals(0, comparator.compare(prefix172, prefix172));
assertTrue(comparator.compare(prefix172, prefix10) < 0);
assertTrue(comparator.compare(prefix10, prefix169) > 0);
assertTrue(comparator.compare(prefix10, prefix192) > 0);
assertTrue(comparator.compare(prefix10, prefix172) > 0);
assertEquals(0, comparator.compare(prefix10, prefix10));
}
@Test
public void testComparatorPrefersSiteLocalToLinkLocal() {
Comparator<InetSocketAddress> comparator = new LanAddressComparator();
InetSocketAddress prefix192 = new InetSocketAddress("192.168.0.1", 0);
InetSocketAddress prefix172 = new InetSocketAddress("172.16.0.1", 0);
InetSocketAddress prefix10 = new InetSocketAddress("10.0.0.1", 0);
InetSocketAddress linkLocal = new InetSocketAddress("169.254.0.1", 0);
assertTrue(comparator.compare(prefix192, linkLocal) < 0);
assertTrue(comparator.compare(prefix172, linkLocal) < 0);
assertTrue(comparator.compare(prefix10, linkLocal) < 0);
assertTrue(comparator.compare(linkLocal, prefix192) > 0);
assertTrue(comparator.compare(linkLocal, prefix172) > 0);
assertTrue(comparator.compare(linkLocal, prefix10) > 0);
assertEquals(0, comparator.compare(linkLocal, linkLocal));
}
@SuppressWarnings("BooleanMethodIsAlwaysInverted")
private boolean systemHasLocalIpv4Address() throws Exception {
for (NetworkInterface i : list(getNetworkInterfaces())) {
for (InetAddress a : list(i.getInetAddresses())) {