Reflection not detected

[hrpath]

trafficstars

Hi !

Here's an extract from the same shell on the same local server

❯ grpcurl -plaintext localhost:50051 list Failed to list services: server does not support the reflection API

❯ grpc_cli ls localhost:50051 metal.grpc.ExecutionService metal.grpc.CoreExecutionService metal.grpc.PayExecutionService grpc.reflection.v1alpha.ServerReflection

I've just started using grpcurl maybe I missed a parameter ?

Thank you !

[jhump]

@hrpath, can you see what happens on the server? Is the server getting the request to the ServerReflection service and then returning an error code?

Also, can you provide more details about the server -- what language it is written in and what version of gRPC it uses?

[hrpath]

Hi,

We use micronaut with grpc 1.25.0

Implementation is the official java https://github.com/grpc/grpc-java/blob/master/documentation/server-reflection-tutorial.md#enable-server-reflection

Can I get some more logs from grpc_cli ls ?

[shibumi]

Hi, I have the same problem with grpc v1.33.2 and protobuf v1.4.3. Programming Language is Go.

[jhump]

@shibumi, and what do you see happening server-side? Do you see a failed request? The grpcurl client will try to use the reflection service and will only print this message if the RPC fails with an "unimplemented" error.

Perhaps your server is registering this service using a different fully-qualified service name? The expected service name is grpc.reflection.v1alpha.ServerReflection and the method used is called ServerReflectionInfo.

[shibumi]

@jhump I should have read your README more carefully. It wasn't working because I did not register a reflection service via reflection.Register(s). With this line it works as expected. Thanks and sorry for the issue hijacking.