Add credentials and secure port to motor server.

MotorControl/MotorServer.py

@@ -57,11 +57,20 @@ class MotorServicer(motorService_pb2_grpc.CarControlServicer):
     def start_server(self):
         server = grpc.server(futures.ThreadPoolExecutor(max_workers=8))
         motorService_pb2_grpc.add_CarControlServicer_to_server(self, server)
-        server.add_insecure_port('[::]:50051')
+        server.add_secure_port('[::]:50051', self.create_credentials())
         server.start()
         while True:
             time.sleep(60*60)
 
+    def create_credentials(self):
+        pvtKeyPath = '/home/pi/tls/device.key'
+        pvtCertPath = '/home/pi/tls/device.crt'
+
+        pvtKeyBytes = open(pvtKeyPath).read()
+        pvtCertBytes = open(pvtCertPath).read()
+
+        return grpc.ssl_channel_credentials(pvtCertBytes, pvtKeyBytes)
+
 motor = Motor()
 servo = Servo(servo_pin)
 servicer = MotorServicer(motor, servo)