grpc client。 has crt

main_test.go

func Test_server_SayHello(t *testing.T) {
	certificate, err := tls.LoadX509KeyPair("./keys/client.crt", "./keys/client.key")
	if err != nil {
		log.Fatalf("Failed to load client key pair, %v", err)
	}

	certPool := x509.NewCertPool()
	ca, err := os.ReadFile("./keys/ca.crt")
	if err != nil {
		log.Fatalf("Failed to read %s, error: %v", "./keys/ca.crt", err)
	}

	if ok := certPool.AppendCertsFromPEM(ca); !ok {
		log.Fatalf("Failed to append ca certs")
	}

	opts := []grpc.DialOption{
		grpc.WithTransportCredentials(credentials.NewTLS(
			&tls.Config{
				ServerName:   "localhost",
				Certificates: []tls.Certificate{certificate},
				RootCAs:      certPool,
			})),
	}
	// conn, err := grpc.Dial(*addr, grpc.WithTransportCredentials(insecure.NewCredentials()))
	conn, err := grpc.Dial("localhost:50051", opts...)
	if err != nil {
		log.Fatalf("Connect to %s failed", "localhost:50051")
	}
	defer conn.Close()

	client := api.NewGreeterClient(conn)
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
	defer cancel()
	r, err := client.SayHello(ctx, &api.HelloRequest{Name: "Hello"})
	if err != nil {
		log.Printf("Failed to greet, error: %v", err)
	} else {
		log.Printf("Greeting: %v", r.GetMessage())
	}
}