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* the Apache License, Version 2.0 (the "License"); you may
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* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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package org.elasticsearch.common.network;
import org.elasticsearch.test.ESTestCase;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Collections;
import static org.hamcrest.Matchers.containsString;
/**
* Tests for network utils. Please avoid using any methods that cause DNS lookups!
*/
public class NetworkUtilsTests extends ESTestCase {
/**
* test sort key order respects PREFER_IPV4
*/
public void testSortKey() throws Exception {
InetAddress localhostv4 = InetAddress.getByName("127.0.0.1");
InetAddress localhostv6 = InetAddress.getByName("::1");
assertTrue(NetworkUtils.sortKey(localhostv4, false) < NetworkUtils.sortKey(localhostv6, false));
assertTrue(NetworkUtils.sortKey(localhostv6, true) < NetworkUtils.sortKey(localhostv4, true));
}
/**
* test ordinary addresses sort before private addresses
*/
public void testSortKeySiteLocal() throws Exception {
InetAddress siteLocal = InetAddress.getByName("172.16.0.1");
assert siteLocal.isSiteLocalAddress();
InetAddress ordinary = InetAddress.getByName("192.192.192.192");
assertTrue(NetworkUtils.sortKey(ordinary, true) < NetworkUtils.sortKey(siteLocal, true));
assertTrue(NetworkUtils.sortKey(ordinary, false) < NetworkUtils.sortKey(siteLocal, false));
InetAddress siteLocal6 = InetAddress.getByName("fec0::1");
assert siteLocal6.isSiteLocalAddress();
InetAddress ordinary6 = InetAddress.getByName("fddd::1");
assertTrue(NetworkUtils.sortKey(ordinary6, true) < NetworkUtils.sortKey(siteLocal6, true));
assertTrue(NetworkUtils.sortKey(ordinary6, false) < NetworkUtils.sortKey(siteLocal6, false));
}
/**
* test private addresses sort before link local addresses
*/
public void testSortKeyLinkLocal() throws Exception {
InetAddress linkLocal = InetAddress.getByName("fe80::1");
assert linkLocal.isLinkLocalAddress();
InetAddress ordinary = InetAddress.getByName("fddd::1");
assertTrue(NetworkUtils.sortKey(ordinary, true) < NetworkUtils.sortKey(linkLocal, true));
assertTrue(NetworkUtils.sortKey(ordinary, false) < NetworkUtils.sortKey(linkLocal, false));
}
/**
* Test filtering out ipv4/ipv6 addresses
*/
public void testFilter() throws Exception {
InetAddress addresses[] = { InetAddress.getByName("::1"), InetAddress.getByName("127.0.0.1") };
assertArrayEquals(new InetAddress[] { InetAddress.getByName("127.0.0.1") }, NetworkUtils.filterIPV4(addresses));
assertArrayEquals(new InetAddress[] { InetAddress.getByName("::1") }, NetworkUtils.filterIPV6(addresses));
}
/**
* Test that selecting by name is possible and properly matches the addresses on all interfaces and virtual
* interfaces.
*
* Note that to avoid that this test fails when interfaces are down or they do not have addresses assigned to them,
* they are ignored.
*/
public void testAddressInterfaceLookup() throws Exception {
for (NetworkInterface netIf : NetworkUtils.getInterfaces()) {
if (!netIf.isUp() || Collections.list(netIf.getInetAddresses()).isEmpty()) {
continue;
}
String name = netIf.getName();
InetAddress[] expectedAddresses = Collections.list(netIf.getInetAddresses()).toArray(new InetAddress[0]);
InetAddress[] foundAddresses = NetworkUtils.getAddressesForInterface(name);
assertArrayEquals(expectedAddresses, foundAddresses);
}
}
public void testNonExistingInterface() throws Exception {
IllegalArgumentException exception = expectThrows(IllegalArgumentException.class,
() -> NetworkUtils.getAddressesForInterface("non-existing"));
assertThat(exception.getMessage(), containsString("No interface named 'non-existing' found"));
}
}