java.lang.NoSuchFieldError: NETWORK_INTERFACES

[hantsy]

Affects: 6.0.5

Upgrade my Spring RSocket Sample to 6.0.5, it failed with following exception when running tests.

java.lang.NoSuchFieldError: NETWORK_INTERFACES
	at io.netty.resolver.dns.DnsNameResolver.anyInterfaceSupportsIpV6(DnsNameResolver.java:170)
	at io.netty.resolver.dns.DnsNameResolver.<clinit>(DnsNameResolver.java:122)
	at io.netty.resolver.dns.DnsNameResolverBuilder.<init>(DnsNameResolverBuilder.java:52)
	at reactor.netty.transport.NameResolverProvider.newNameResolverGroup(NameResolverProvider.java:501)
	at reactor.netty.tcp.TcpResources.getOrCreateDefaultResolver(TcpResources.java:315)
	at reactor.netty.tcp.TcpClientConfig.defaultAddressResolverGroup(TcpClientConfig.java:104)
	at reactor.netty.transport.ClientTransportConfig.resolverInternal(ClientTransportConfig.java:225)
	at reactor.netty.transport.ClientTransport.connect(ClientTransport.java:59)
	at reactor.netty.tcp.TcpClient.connect(TcpClient.java:193)
	at io.rsocket.transport.netty.client.TcpClientTransport.connect(TcpClientTransport.java:118)
	at io.rsocket.core.RSocketConnector.lambda$null$6(RSocketConnector.java:551)
	at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:152)
	at reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53)
	at reactor.core.publisher.Mono.subscribe(Mono.java:4470)
	at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:200)
	at reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53)
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57)
	at io.rsocket.core.DefaultRSocketClient.doSubscribe(DefaultRSocketClient.java:190)
	at io.rsocket.core.ResolvingOperator.add(ResolvingOperator.java:378)
	at io.rsocket.core.ResolvingOperator.observe(ResolvingOperator.java:105)
	at io.rsocket.core.DefaultRSocketClient$FlatMapMain.onNext(DefaultRSocketClient.java:302)
	at io.rsocket.core.DefaultRSocketClient$FlatMapMain.onNext(DefaultRSocketClient.java:214)
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107)
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107)
	at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:224)
	at reactor.core.publisher.MonoZip$ZipCoordinator.signal(MonoZip.java:293)
	at reactor.core.publisher.MonoZip$ZipInner.onNext(MonoZip.java:474)
	at reactor.core.publisher.MonoCallable$MonoCallableSubscription.request(MonoCallable.java:156)
	at reactor.core.publisher.MonoZip$ZipInner.onSubscribe(MonoZip.java:466)
	at reactor.core.publisher.MonoCallable.subscribe(MonoCallable.java:48)
	at reactor.core.publisher.MonoZip$ZipCoordinator.request(MonoZip.java:216)
	at reactor.core.publisher.FluxMap$MapConditionalSubscriber.request(FluxMap.java:295)
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136)
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136)
	at io.rsocket.core.DefaultRSocketClient$FlatMapMain.request(DefaultRSocketClient.java:327)
	at io.rsocket.core.DefaultRSocketClient$FlattingInner.request(DefaultRSocketClient.java:453)
	at reactor.core.publisher.FluxMap$MapSubscriber.request(FluxMap.java:164)
	at reactor.core.publisher.FluxMap$MapSubscriber.request(FluxMap.java:164)
	at reactor.test.DefaultStepVerifierBuilder$DefaultVerifySubscriber.onSubscribe(DefaultStepVerifierBuilder.java:1161)
	at reactor.core.publisher.FluxMap$MapSubscriber.onSubscribe(FluxMap.java:92)
	at reactor.core.publisher.FluxMap$MapSubscriber.onSubscribe(FluxMap.java:92)
	at io.rsocket.core.DefaultRSocketClient$FlatMapMain.onSubscribe(DefaultRSocketClient.java:256)
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onSubscribe(FluxContextWrite.java:101)
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onSubscribe(FluxContextWrite.java:101)
	at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onSubscribe(FluxMap.java:194)
	at reactor.core.publisher.MonoZip.subscribe(MonoZip.java:125)
	at reactor.core.publisher.Mono.subscribe(Mono.java:4485)
	at io.rsocket.core.DefaultRSocketClient$RSocketClientFluxOperator.subscribe(DefaultRSocketClient.java:555)
	at reactor.core.publisher.Flux.subscribe(Flux.java:8671)
	at reactor.test.DefaultStepVerifierBuilder$DefaultStepVerifier.toVerifierAndSubscribe(DefaultStepVerifierBuilder.java:891)
	at reactor.test.DefaultStepVerifierBuilder$DefaultStepVerifier.verify(DefaultStepVerifierBuilder.java:831)
	at reactor.test.DefaultStepVerifierBuilder$DefaultStepVerifier.verify(DefaultStepVerifierBuilder.java:823)
	at reactor.test.DefaultStepVerifierBuilder.verifyComplete(DefaultStepVerifierBuilder.java:690)
	at com.example.demo.IntegrationTests.testGetAllPosts(IntegrationTests.java:46)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
	at 

Check the complete message from Github Actions, https://github.com/hantsy/spring6-sandbox/actions/runs/4249830087/jobs/7390342006#step:5:984

The application is very simple, just to taste the RSocket client interface feature.

@Configuration
@ComponentScan
@PropertySource(value = "classpath:application.properties", ignoreResourceNotFound = true)
public class Application {
    public static void main(String[] args) throws Exception {
        try (AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
            Application.class)) {
            var rSocketServer = context.getBean(RSocketServer.class);
            rSocketServer.bind(TcpServerTransport.create("localhost", 7000)).block();
        }
    }

    @Bean
    RSocketServer rSocketServer(RSocketMessageHandler handler) {
        return RSocketServer.create(handler.responder());
    }

    @Bean
    public RSocketStrategies rsocketStrategies() {
        return RSocketStrategies.builder()
            .encoders(encoders -> encoders.add(new Jackson2CborEncoder()))
            .decoders(decoders -> decoders.add(new Jackson2CborDecoder()))
            .routeMatcher(new PathPatternRouteMatcher())
            .build();
    }
}

// Client Config
@Configuration
public class ClientConfig {


    @Bean
    RSocketRequester rSocketRequester(RSocketStrategies strategies) {
        return RSocketRequester.builder()
            .rsocketStrategies(strategies)
            .tcp("localhost", 7000);
    }

    @SneakyThrows
    @Bean
    public PostClientService postClientService(RSocketRequester requester) {
        RSocketServiceProxyFactory rSocketServiceProxyFactory =
            RSocketServiceProxyFactory.builder(requester)
                .blockTimeout(Duration.ofMillis(5000))
                .build();
        return rSocketServiceProxyFactory.createClient(PostClientService.class);
    }
}
public interface PostClientService {

    @RSocketExchange("posts.findAll")
    public Flux<Post> all();

    @RSocketExchange("posts.titleContains")
    public Flux<Post> titleContains(@Payload String title);

    @RSocketExchange("posts.findById.{id}")
    public Mono<Post> get(@DestinationVariable("id") UUID id);

    @RSocketExchange("posts.save")
    public Mono<UUID> create(@Payload Post post);

    @RSocketExchange("posts.update.{id}")
    public Mono<Boolean> update(@DestinationVariable("id") UUID id, @Payload Post post);

    @RSocketExchange("posts.deleteById.{id}")
    public Mono<Boolean> delete(@DestinationVariable("id") UUID id);

}



// Server Config
@Configuration
class ServerConfig {

    @Bean
    public RSocketMessageHandler rsocketMessageHandler(RSocketStrategies rsocketStrategies) {
        RSocketMessageHandler handler = new RSocketMessageHandler();
        handler.setRSocketStrategies(rsocketStrategies);
        return handler;
    }
}

The testing codes that throws the exception.

@SpringJUnitConfig(classes = Application.class)
public class IntegrationTests {

    @Value("${rsocket.port:7000}")
    int port;

    @Autowired
    PostClientService client;

    @Autowired
    RSocketServer rSocketServer;

    private Closeable disposableServer;

    @BeforeEach
    public void setup() {
        this.disposableServer = this.rSocketServer
                .bindNow(TcpServerTransport.create("localhost", port));
    }

    @AfterEach
    public void teardown() {
        this.disposableServer.dispose();
    }

    @Test
    public void testGetAllPosts() throws Exception {
        this.client.all()
                .as(StepVerifier::create)
                .expectNextCount(2)
                .verifyComplete();
    }

}

[ClaudioRizzo]

I am facing a related / similar issue:

java.lang.NoSuchFieldError: NETWORK_INTERFACES
	at io.netty.resolver.dns.DnsNameResolver.anyInterfaceSupportsIpV6(DnsNameResolver.java:170) ~[netty-resolver-dns-4.1.89.Final.jar:4.1.89.Final]
	at io.netty.resolver.dns.DnsNameResolver.<clinit>(DnsNameResolver.java:122) ~[netty-resolver-dns-4.1.89.Final.jar:4.1.89.Final]
	at io.netty.resolver.dns.DnsNameResolverBuilder.<init>(DnsNameResolverBuilder.java:52) ~[netty-resolver-dns-4.1.89.Final.jar:4.1.89.Final]
	at reactor.netty.transport.NameResolverProvider.newNameResolverGroup(NameResolverProvider.java:501) ~[reactor-netty-core-1.1.3.jar:1.1.3]
	at reactor.netty.tcp.TcpResources.getOrCreateDefaultResolver(TcpResources.java:315) ~[reactor-netty-core-1.1.3.jar:1.1.3]
	at reactor.netty.http.HttpResources.getOrCreateDefaultResolver(HttpResources.java:162) ~[reactor-netty-http-1.1.3.jar:1.1.3]
	at reactor.netty.http.client.HttpClientConfig.defaultAddressResolverGroup(HttpClientConfig.java:396) ~[reactor-netty-http-1.1.3.jar:1.1.3]
	at reactor.netty.transport.ClientTransportConfig.resolverInternal(ClientTransportConfig.java:225) ~[reactor-netty-core-1.1.3.jar:1.1.3]
	at reactor.netty.http.client.HttpClientConfig.resolverInternal(HttpClientConfig.java:450) ~[reactor-netty-http-1.1.3.jar:1.1.3]
	at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.lambda$subscribe$0(HttpClientConnect.java:269) ~[reactor-netty-http-1.1.3.jar:1.1.3]
	at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:58) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.FluxRetryWhen.subscribe(FluxRetryWhen.java:77) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoRetryWhen.subscribeOrReturn(MonoRetryWhen.java:46) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.subscribe(HttpClientConnect.java:276) ~[reactor-netty-http-1.1.3.jar:1.1.3]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoDeferContextual.subscribe(MonoDeferContextual.java:55) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:165) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2545) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2341) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:2215) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoCacheTime.subscribeOrReturn(MonoCacheTime.java:143) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.Mono.subscribe(Mono.java:4470) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber.run(MonoSubscribeOn.java:126) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:84) ~[reactor-core-3.5.3.jar:3.5.3]
	at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:37) ~[reactor-core-3.5.3.jar:3.5.3]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na]
	at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]

[sbrannen]

Upgrade my Spring RSocket Sample to 6.0.5, it failed with following exception when running tests.

What version of Spring Framework did you upgrade from?

In any case, it sounds like an incompatibility with the version of one or more Netty artifacts -- and thus perhaps not directly related to Spring.

Have you verified that your various Netty artifacts are compatible?

[hantsy]

What version of Spring Framework did you upgrade from?

Upgraded 6.0.4 to 6.0.5, and failed with the above exception.

Have you verified that your various Netty artifacts are compatible?

Managed by reactor-bom, the version is:

<reactor.version>2022.0.3</reactor.version>

Reactor Netty deps added:

<dependency>
    <groupId>io.projectreactor.netty</groupId>
    <artifactId>reactor-netty</artifactId>
</dependency>

Check the sample project here.

https://github.com/hantsy/spring6-sandbox/blob/master/declarative-rsocket-client

[rstoyanchev]

The field was added in Netty 4.1.87 with netty/netty@8da8f27, and the class expecting it is another Netty class, which points to a mix of versions for Netty modules.

Netty is an optional dependency in the Spring Framework, and therefore this is completely unrelated to the switch from 6.0.4 to 6.0.5. Instead your pom picked up a newer version of Reactor Netty since the last time you ran the sample, because in the pom the version is not specified, and therefore set to get the latest.

$ mvn dependency:tree
...
[INFO] +- io.rsocket:rsocket-core:jar:1.1.3:compile
[INFO] |  \- io.netty:netty-buffer:jar:4.1.81.Final:compile
[INFO] |     \- io.netty:netty-common:jar:4.1.81.Final:compile
[INFO] +- io.rsocket:rsocket-transport-netty:jar:1.1.3:compile
[INFO] |  +- io.projectreactor.netty:reactor-netty-core:jar:1.1.3:compile
[INFO] |  |  + ...
[INFO] |  |  +- io.netty:netty-resolver-dns:jar:4.1.89.Final:compile
...
[INFO] +- io.projectreactor.netty:reactor-netty:jar:1.1.3:compile
[INFO] |  \- io.projectreactor.netty.incubator:reactor-netty-incubator-quic:jar:0.1.3:runtime
[INFO] |     \- io.netty.incubator:netty-incubator-codec-native-quic:jar:linux-x86_64:0.0.36.Final:runtime
[INFO] |        \- io.netty.incubator:netty-incubator-codec-classes-quic:jar:0.0.36.Final:runtime
[INFO] |           \- commons-codec:commons-codec:jar:1.15:runtime
...

You can see the mix of netty-common 4.1.81 and netty-resolver-dns 4.1.89.

Either you need to set to a lower Reactor Netty version explicitly, probably 1.1.1, or exclude reactor-netty-buffer from your RScocket dependencies. Or use a new version of RSocket Java compiled against Netty 4.1.87 or higher, and that does not exist at the moment. There is an issue for it rsocket/rsocket-java#1082.