Added delay on send, due to avoid congestion

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@2810 b32b6428-25c9-4566-ad07-03861ab6144f

libs/lib/xaal/lib/aioengine.py

@@ -172,6 +172,7 @@ class AsyncEngine(core.EngineMixin):
         while self.is_running():
             temp = await self.__txFifo.get()
             self.send_msg(temp)
+            await asyncio.sleep(0.001)
 
     async def timer_task(self):
         await self.running_event.wait()