FIX dbprepare: wait_net_service exceptions

dodo_utils.py

@@ -34,10 +34,12 @@ def wait_net_service(server, port, timeout=None):
             # this exception occurs only if timeout is set
             if timeout:
                 return False
+        except (ConnectionRefusedError, ConnectionAbortedError):
+            pass
         except socket.error as err:
             # catch timeout exception from underlying network library
             # this one is different from socket.timeout
-            if type(err.args) != tuple or err[0] != errno.ETIMEDOUT:
+            if type(err.args) != tuple or err.errno != errno.ETIMEDOUT:
                 raise
         else:
             s.close()