b249714a2d
Motivation: The DNS resolver may use default configuration inherited from the environment. This means the ndots value may change and result in test failure if the tests don't explicitly set the assumed value. Modifications: - Explicitly set ndots in resolver-dns unit tests so we don't fail if the environment overrides the search domain and ndots Result: Unit tests are less dependent upon the enviroment they run in. Fixes https://github.com/netty/netty/issues/6966.
70 lines
2.8 KiB
Java
70 lines
2.8 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.resolver.dns;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.nio.NioDatagramChannel;
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import io.netty.handler.codec.dns.DefaultDnsOptEcsRecord;
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import io.netty.handler.codec.dns.DnsRecord;
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import io.netty.util.internal.SocketUtils;
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import io.netty.util.concurrent.Future;
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import org.junit.Ignore;
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import org.junit.Test;
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import java.net.InetAddress;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.TimeUnit;
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public class DnsNameResolverClientSubnetTest {
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// See https://www.gsic.uva.es/~jnisigl/dig-edns-client-subnet.html
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// Ignore as this needs to query real DNS servers.
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@Ignore
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@Test
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public void testSubnetQuery() throws Exception {
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EventLoopGroup group = new NioEventLoopGroup(1);
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DnsNameResolver resolver = newResolver(group).build();
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try {
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// Same as:
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// # /.bind-9.9.3-edns/bin/dig @ns1.google.com www.google.es +client=157.88.0.0/24
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Future<List<InetAddress>> future = resolver.resolveAll("www.google.es",
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Collections.<DnsRecord>singleton(
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// Suggest max payload size of 1024
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// 157.88.0.0 / 24
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new DefaultDnsOptEcsRecord(1024, 24,
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SocketUtils.addressByName("157.88.0.0").getAddress())));
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for (InetAddress address: future.syncUninterruptibly().getNow()) {
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System.err.println(address);
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}
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} finally {
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resolver.close();
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group.shutdownGracefully(0, 0, TimeUnit.SECONDS);
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}
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}
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private static DnsNameResolverBuilder newResolver(EventLoopGroup group) {
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return new DnsNameResolverBuilder(group.next())
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.channelType(NioDatagramChannel.class)
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.nameServerProvider(
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new SingletonDnsServerAddressStreamProvider(SocketUtils.socketAddress("8.8.8.8", 53)))
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.maxQueriesPerResolve(1)
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.optResourceEnabled(false)
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.ndots(1);
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}
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}
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