stub = HogeServer::Stub.new("localhost:99999", :this_channel_is_insecure) request = HogeRequest.new(hoge: 'fuga') metadata = { username: 'admin', password: 'admin123' } stub.hoge(request, metadata: metadata) import ( grpc "google.golang.org/grpc" metadata "google.golang.org/grpc/metadata" ) grpcServer := grpc.NewServer( grpc.StreamInterceptor(streamInterceptor), grpc.UnaryInterceptor(unaryIntercep