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DnsResolver.resolve(...) fails when ipaddress is used.

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Motivation:

DnsResolver.resolve(...) fails when an InetSocketAddress is used that was constructed of an ipaddress string.

Modifications:

Don't try to lookup when the InetSocketAddress was constructed via an ipaddress.

Result:

DnsResolver.resolve(...) works in all cases.
This commit is contained in:
Norman Maurer 2015-07-10 22:00:30 +02:00
parent 74dd7f85ca
commit d1344345bb
2 changed files with 22 additions and 4 deletions
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16
resolver-dns/src/main/java/io/netty/resolver/dns/DnsNameResolver.java
View File

@ -38,6 +38,7 @@ import io.netty.handler.codec.dns.DnsResponse;
import io.netty.handler.codec.dns.DnsResponseCode;
import io.netty.resolver.NameResolver;
import io.netty.resolver.SimpleNameResolver;
import io.netty.util.NetUtil;
import io.netty.util.ReferenceCountUtil;
import io.netty.util.collection.IntObjectHashMap;
import io.netty.util.concurrent.Future;
@ -50,6 +51,7 @@ import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.net.IDN;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.ArrayList;
@ -638,12 +640,18 @@ public class DnsNameResolver extends SimpleNameResolver<InetSocketAddress> {
@Override
protected void doResolve(InetSocketAddress unresolvedAddress, Promise<InetSocketAddress> promise) throws Exception {
final String hostname = IDN.toASCII(hostname(unresolvedAddress));
final int port = unresolvedAddress.getPort();
byte[] bytes = NetUtil.createByteArrayFromIpAddressString(unresolvedAddress.getHostName());
if (bytes == null) {
final String hostname = IDN.toASCII(hostname(unresolvedAddress));
final int port = unresolvedAddress.getPort();
final DnsNameResolverContext ctx = new DnsNameResolverContext(this, hostname, port, promise);
final DnsNameResolverContext ctx = new DnsNameResolverContext(this, hostname, port, promise);
ctx.resolve();
ctx.resolve();
} else {
// The unresolvedAddress was created via a String that contains an ipaddress.
promise.setSuccess(new InetSocketAddress(InetAddress.getByAddress(bytes), unresolvedAddress.getPort()));
}
}
private static String hostname(InetSocketAddress addr) {

10
resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverTest.java
View File

@ -418,6 +418,16 @@ public class DnsNameResolverTest {
}
}
@Test
public void testResolveIp() {
InetSocketAddress unresolved =
InetSocketAddress.createUnresolved("10.0.0.1", ThreadLocalRandom.current().nextInt(65536));
InetSocketAddress address = resolver.resolve(unresolved).syncUninterruptibly().getNow();
assertEquals("10.0.0.1", address.getHostName());
}
private static void resolve(
Map<InetSocketAddress, Future<InetSocketAddress>> futures, String hostname) {
InetSocketAddress unresolved =