Fix history continuation point calculation.

alexander-travov · oroulet · commit 9f743f68e1ba · 2022-11-25T19:01:35.000+01:00
diff --git a/opcua/server/history.py b/opcua/server/history.py
@@ -123,7 +123,7 @@ def read_node_history(self, node_id, start, end, nb_values):
             else:
                 results = [dv for dv in self._datachanges[node_id] if start <= dv.SourceTimestamp <= end]
             if nb_values and len(results) > nb_values:
-                cont = results[nb_values + 1].SourceTimestamp
+                cont = results[nb_values].SourceTimestamp
                 results = results[:nb_values]
             return results, cont
 
@@ -164,7 +164,7 @@ def read_event_history(self, source_id, start, end, nb_values, evfilter):
             else:
                 results = [ev for ev in self._events[source_id] if start <= ev.Time <= end]
             if nb_values and len(results) > nb_values:
-                cont = results[nb_values + 1].Time
+                cont = results[nb_values].Time
                 results = results[:nb_values]
             return results, cont
 
