grpc: c++ server and java client

[gary]

can grpc support "A Bidirectional streaming RPC" between c++ and java? it works fine when i test the example "SayHello",it is a sync method.
I used "grpc-java/examlpe/route-guide-client" as a client and "grpc-common/cpp/route_guide_server" as a server, port 50051, I got the error message:

com.google.common.util.concurrent.UncheckedExecutionException: io.grpc.StatusRuntimeException: UNIMPLEMENTED
at io.grpc.stub.Calls.getUnchecked(Calls.java:117)
at io.grpc.stub.Calls.blockingUnaryCall(Calls.java:129)
at io.grpc.examples.routeguide.RouteGuideGrpc$RouteGuideBlockingStub.getFeature(RouteGuideGrpc.java:204)
at io.grpc.examples.routeguide.RouteGuideClient.getFeature(RouteGuideClient.java:81)
at io.grpc.examples.routeguide.RouteGuideClient.main(RouteGuideClient.java:233)
Caused by: io.grpc.StatusRuntimeException: UNIMPLEMENTED
at io.grpc.Status.asRuntimeException(Status.java:428)
at io.grpc.stub.Calls$UnaryStreamToFuture.onClose(Calls.java:324)
at io.grpc.ChannelImpl$CallImpl$ClientStreamListenerImpl$3.run(ChannelImpl.java:402)
at io.grpc.SerializingExecutor$TaskRunner.run(SerializingExecutor.java:154)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Exception in thread "main" com.google.common.util.concurrent.UncheckedExecutionException: io.grpc.StatusRuntimeException: UNIMPLEMENTED
at io.grpc.stub.Calls.getUnchecked(Calls.java:117)
at io.grpc.stub.Calls.blockingUnaryCall(Calls.java:129)
at io.grpc.examples.routeguide.RouteGuideGrpc$RouteGuideBlockingStub.getFeature(RouteGuideGrpc.java:204)
at io.grpc.examples.routeguide.RouteGuideClient.getFeature(RouteGuideClient.java:81)
at io.grpc.examples.routeguide.RouteGuideClient.main(RouteGuideClient.java:233)
Caused by: io.grpc.StatusRuntimeException: UNIMPLEMENTED
at io.grpc.Status.asRuntimeException(Status.java:428)
at io.grpc.stub.Calls$UnaryStreamToFuture.onClose(Calls.java:324)
at io.grpc.ChannelImpl$CallImpl$ClientStreamListenerImpl$3.run(ChannelImpl.java:402)
at io.grpc.SerializingExecutor$TaskRunner.run(SerializingExecutor.java:154)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

can grpc work between c++ and java by using async method?
thanks

[Eric Anderson]

Could a C++ dev look into this? I tried from the Java-side but the example isn't compiling on master ("too many arguments to CreateChannel").

sync vs async shouldn't matter at all; that is a language-specific detail and doesn't impact the wire-protocol.

The proto files look identical, so I'm surprised it doesn't work, especially since the hello world example worked. Maybe you were accidentally still running the hello world server?

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[Simon Ma]

The proto packages are different.

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[Yang Gao]

I somehow did not see this. This seems to be a duplicate of https://github.com/grpc/grpc/issues/3151. Please look at https://github.com/grpc/grpc/issues/3161 and it is being fixed.

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[Eric Anderson]

Arg. With the removal of grpc-common grpc-java now has two different routeguide.protos:

https://github.com/grpc/grpc-java/blob/master/examples/protos/route_guide.proto

https://github.com/grpc/grpc-java/blob/master/examples/src/main/proto/route_guide.proto

And of course they have different packages; the one I was looking at had the same package as the one in C++.

[Yang Gao]

As mentioned in the issue, we are all changing to routeguide as a package name.

[gary]

thank you

在 2015年9月1日星期二 UTC+8上午5:19:43，Yang Gao写道：