do not destroy client if related to the session

src/omero/gateway/__init__.py

@@ -2092,8 +2092,14 @@ def _resetOmeroClient(self):
         logger.debug(self.ice_config)
 
         if self.c is not None:
-            self.c.__del__()
-            self.c = None
+            try:
+                if self.c.getSessionId() !=  self._sessionUuid:
+                    self.c.__del__()
+                    self.c = None
+            except omero.ClientError: # no session available
+                self.c.__del__()
+                self.c = None
+                pass
 
         if self.host is not None:
             if self.port is not None:
@@ -2145,17 +2151,14 @@ def connect(self, sUuid=None):
                         logger.debug(
                             "was connected, creating new omero.client")
                         self._resetOmeroClient()
-                    print("Client created")
                     # timeout to allow this is $ omero config set
                     # omero.sessions.timeout 3600000
                     s = self.c.joinSession(self._sessionUuid)
                     s.detachOnDestroy()
-                    print("Session joined")
                     self.SERVICE_OPTS = self.createServiceOptsDict()
                     logger.debug(
                         'Joined Session OK with Uuid: %s'
                         % (self._sessionUuid,))
-                    print("Join %s:" % self._sessionUuid)
                     self._was_join = True
                 except Ice.SyscallException:  # pragma: no cover
                     raise