Java GRPC Client : Jetty ALPN/NPN has not been properly configured.

[Vinicius Carvalho]

Hi there I'm trying the latest google-cloud-pubsub client, and although I'm following the instructions at https://github.com/grpc/grpc-java/blob/master/SECURITY.md

I'm still getting an error : Jetty ALPN/NPN has not been properly configured.

My pom file looks like this:

<dependencies>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-actuator</artifactId>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
   </dependency>

   <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-pubsub</artifactId>
      <version>0.3.0</version>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
   </dependency>
</dependencies>

I'm trying to run a JUnit test from intellij and it fails:

com.google.cloud.pubsub.PubSubException: io.grpc.StatusRuntimeException: UNKNOWN

at com.google.cloud.pubsub.spi.DefaultPubSubRpc$1.apply(DefaultPubSubRpc.java:174)

at com.google.cloud.pubsub.spi.DefaultPubSubRpc$1.apply(DefaultPubSubRpc.java:168)

at com.google.common.util.concurrent.Futures$CatchingFuture.doFallback(Futures.java:842)

at com.google.common.util.concurrent.Futures$CatchingFuture.doFallback(Futures.java:834)

at com.google.common.util.concurrent.Futures$AbstractCatchingFuture.run(Futures.java:789)

at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:456)

at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:817)

at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:595)

at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.addListener(AbstractFuture.java:96)

at com.google.common.util.concurrent.Futures.catching(Futures.java:553)

at com.google.cloud.pubsub.spi.DefaultPubSubRpc.translate(DefaultPubSubRpc.java:168)

at com.google.cloud.pubsub.spi.DefaultPubSubRpc.create(DefaultPubSubRpc.java:183)

at com.google.cloud.pubsub.PubSubImpl.createAsync(PubSubImpl.java:206)

at com.google.cloud.pubsub.PubSubImpl.create(PubSubImpl.java:201)

at org.springframework.cloud.pubsub.PubsubRpcApplicationTests.contextLoads(PubsubRpcApplicationTests.java:24)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:483)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)

at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)

at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)

at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:483)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

Caused by: com.google.api.gax.grpc.ApiException: io.grpc.StatusRuntimeException: UNKNOWN

at com.google.api.gax.grpc.ExceptionTransformingCallable$1.onFailure(ExceptionTransformingCallable.java:91)

at com.google.common.util.concurrent.Futures$6.run(Futures.java:1764)

at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:456)

at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:817)

at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:595)

at com.google.common.util.concurrent.Futures.addCallback(Futures.java:1776)

at com.google.common.util.concurrent.Futures.addCallback(Futures.java:1713)

at com.google.api.gax.grpc.ExceptionTransformingCallable.futureCall(ExceptionTransformingCallable.java:66)

at com.google.api.gax.grpc.RetryingCallable$Retryer.run(RetryingCallable.java:129)

at com.google.api.gax.grpc.RetryingCallable.futureCall(RetryingCallable.java:85)

at com.google.api.gax.grpc.ChannelBindingCallable.futureCall(ChannelBindingCallable.java:64)

at com.google.api.gax.grpc.ApiCallable.futureCall(ApiCallable.java:237)

at com.google.api.gax.grpc.ApiCallable.futureCall(ApiCallable.java:248)

... 36 more

Caused by: io.grpc.StatusRuntimeException: UNKNOWN

at io.grpc.Status.asRuntimeException(Status.java:545)

at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:417)

at io.grpc.ClientInterceptors$CheckedForwardingClientCall.start(ClientInterceptors.java:203)

at io.grpc.ForwardingClientCall.start(ForwardingClientCall.java:47)

at com.google.api.gax.grpc.HeaderInterceptor$1.start(HeaderInterceptor.java:64)

at io.grpc.stub.ClientCalls.startCall(ClientCalls.java:248)

at io.grpc.stub.ClientCalls.asyncUnaryRequestCall(ClientCalls.java:227)

at io.grpc.stub.ClientCalls.futureUnaryCall(ClientCalls.java:186)

at com.google.api.gax.grpc.DirectCallable.futureCall(DirectCallable.java:58)

at com.google.api.gax.grpc.ExceptionTransformingCallable.futureCall(ExceptionTransformingCallable.java:65)

... 41 more

Caused by: java.lang.IllegalArgumentException: Jetty ALPN/NPN has not been properly configured.

at io.grpc.netty.GrpcSslContexts.selectApplicationProtocolConfig(GrpcSslContexts.java:153)

at io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:130)

at io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:119)

at io.grpc.netty.GrpcSslContexts.forClient(GrpcSslContexts.java:90)

at io.grpc.netty.NettyChannelBuilder.createProtocolNegotiator(NettyChannelBuilder.java:263)

at io.grpc.netty.NettyChannelBuilder$NettyTransportFactory.newClientTransport(NettyChannelBuilder.java:322)

at io.grpc.internal.CallCredentialsApplyingTransportFactory.newClientTransport(CallCredentialsApplyingTransportFactory.java:62)

at io.grpc.internal.TransportSet.startNewTransport(TransportSet.java:199)

at io.grpc.internal.TransportSet.obtainActiveTransport(TransportSet.java:179)

at io.grpc.internal.ManagedChannelImpl$3.getTransport(ManagedChannelImpl.java:476)

at io.grpc.internal.ManagedChannelImpl$3.getTransport(ManagedChannelImpl.java:432)

at io.grpc.DummyLoadBalancerFactory$DummyLoadBalancer.pickTransport(DummyLoadBalancerFactory.java:105)

at io.grpc.internal.ManagedChannelImpl$1.get(ManagedChannelImpl.java:149)

at io.grpc.internal.ClientCallImpl.start(ClientCallImpl.java:201)

at io.grpc.auth.ClientAuthInterceptor$1.checkedStart(ClientAuthInterceptor.java:104)

at io.grpc.ClientInterceptors$CheckedForwardingClientCall.start(ClientInterceptors.java:195)

... 48 more

Am I missing something obvious on setting up ALPN on GRPC?

Regards

[Vinicius Carvalho]

Turns out that because of tomcat the native openssl library was not being loaded. Switched to Jetty and it works

Cheers