Channel closed while performing protocol negotiation

[prvsousa]

Please answer these questions before submitting your issue.

What version of gRPC are you using?

What JVM are you using (java -version)?

java version "1.8.0_131"

What did you do?

If possible, provide a recipe for reproducing the error.
If I do:
➔ ./run-test-server.sh
and then,
➔ ./run-test-client.sh --server_port=8080

Gradle is no longer run automatically. Make sure to run
'./gradlew installDist -PskipCodegen=true' or
'./gradlew :grpc-interop-testing:installDist -PskipCodegen=true' after any
changes. -PskipCodegen=true is optional, but requires less setup.
Running test empty_unary
Exception in thread "main" io.grpc.StatusRuntimeException: UNAVAILABLE: Channel closed while performing protocol negotiation
at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:227)
at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:208)
at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:141)
at io.grpc.testing.integration.TestServiceGrpc$TestServiceBlockingStub.emptyCall(TestServiceGrpc.java:463)
at io.grpc.testing.integration.AbstractInteropTest.emptyUnary(AbstractInteropTest.java:273)
at io.grpc.testing.integration.TestServiceClient.runTest(TestServiceClient.java:209)
at io.grpc.testing.integration.TestServiceClient.run(TestServiceClient.java:197)
at io.grpc.testing.integration.TestServiceClient.main(TestServiceClient.java:81)
Shutting down

What did you expect to see?

What did you see instead?

The error:

Gradle is no longer run automatically. Make sure to run
'./gradlew installDist -PskipCodegen=true' or
'./gradlew :grpc-interop-testing:installDist -PskipCodegen=true' after any
changes. -PskipCodegen=true is optional, but requires less setup.
Running test empty_unary
Exception in thread "main" io.grpc.StatusRuntimeException: UNAVAILABLE: Channel closed while performing protocol negotiation
at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:227)
at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:208)
at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:141)
at io.grpc.testing.integration.TestServiceGrpc$TestServiceBlockingStub.emptyCall(TestServiceGrpc.java:463)
at io.grpc.testing.integration.AbstractInteropTest.emptyUnary(AbstractInteropTest.java:273)
at io.grpc.testing.integration.TestServiceClient.runTest(TestServiceClient.java:209)
at io.grpc.testing.integration.TestServiceClient.run(TestServiceClient.java:197)
at io.grpc.testing.integration.TestServiceClient.main(TestServiceClient.java:81)
Shutting down

[ejona86]

The server-side says:

Using fake CA for TLS certificate. Test clients should expect host
*.test.google.fr and our test CA. For the Java test client binary, use:
--server_host_override=foo.test.google.fr --use_test_ca=true

Running ./run-test-client.sh --server_port=8080 --server_host_override=foo.test.google.fr --use_test_ca=true succeeds.

I'm not sure why there isn't more error information included.

[prvsousa]

Ok I got this. Thanks.

Can I test a script from a true CA? Instead of localhost a self-signed certificate in this library?

I would like to establish a communication between server-client validating the certificates (which I already have and generated based on easypki by google) in a CA. Does this library support this? If so, how can I do it?

Thank you.

[prvsousa]

I ask this because this library only generates traffic in localhost, so, means that it does not test on a true CA in the network.

[ejona86]

The default host is simply localhost. You can change the hostname via --server_host. If you don't use --use_test_ca=true, then it will use the default root CAs.

To use a publicly-trusted certificate, you would need to modify the server or use grpc-test.sandbox.googleapis.com: ./run-test-client.sh --server_host=grpc-test.sandbox.googleapis.com --server_port=443 .