cleanup

deltatau.py

@@ -35,7 +35,7 @@ class Deltatau:
     try:
       self._comm=comm=PPComm(**param,timeout=2.0)
       self._gather=gather=Gather(comm)
-    except socket.timeout as e:
+    except (socket.timeout,socket.gaierror) as e:
       _log.critical(f'can not connect to deltatau:"{host}" -> {e}')
       self._comm=comm=None
       self._gather=gather=None