help about credentials in Server

This code is from etcd to create server, and when I let grpcServer listen at http://localhost:2379, tls === nil and grpc.NewServer doesn’t include grpc.Creds.

func Server(s *etcdserver.EtcdServer, tls *tls.Config, gopts ...grpc.ServerOption) *grpc.Server {
	var opts []grpc.ServerOption
	opts = append(opts, grpc.CustomCodec(&codec{}))
	if tls != nil {
		opts = append(opts, grpc.Creds(credentials.NewTLS(tls)))
	}
	opts = append(opts, grpc.UnaryInterceptor(newUnaryInterceptor(s)))
	opts = append(opts, grpc.StreamInterceptor(newStreamInterceptor(s)))
	opts = append(opts, grpc.MaxRecvMsgSize(int(s.Cfg.MaxRequestBytes+grpcOverheadBytes)))
	opts = append(opts, grpc.MaxSendMsgSize(maxSendBytes))
	opts = append(opts, grpc.MaxConcurrentStreams(maxStreams))
	grpcServer := grpc.NewServer(append(opts, gopts...)...)

I want to do the same thing with nodejs grpc, does grpc.ServerCredentials.createInsecure() work?

[zyf0330]

I have tried python grpc, and python-client behaviors like node-client. It gives error

Traceback (most recent call last):
  File "greeter_client.py", line 38, in <module>
    run()
  File "greeter_client.py", line 33, in run
    response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'))
  File "/home/zyf/.local/lib/python3.6/site-packages/grpc/_channel.py", line 500, in __call__
    return _end_unary_response_blocking(state, call, False, None)
  File "/home/zyf/.local/lib/python3.6/site-packages/grpc/_channel.py", line 434, in _end_unary_response_blocking
    raise _Rendezvous(state, None, None, deadline)
grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with (StatusCode.UNAVAILABLE, Connect Failed)>

which is the same as error of node-client.

Using python-server with go-client works normally.

I don’t try C++ grpc, because both client and server cannot run and show core dump, I don’t know why.

[Sunnykaby]

I’m not sure that https://github.com/grpc/grpc-go/issues/434