first attempt to decode custom extension objects, broken!

Author: oroulet

opcua/common/node.py

@@ -308,6 +308,12 @@ def get_methods(self):
     def get_children_descriptions(self, refs=ua.ObjectIds.HierarchicalReferences, nodeclassmask=ua.NodeClass.Unspecified, includesubtypes=True):
         return self.get_references(refs, ua.BrowseDirection.Forward, nodeclassmask, includesubtypes)
 
+    def get_encoding_refs(self):
+        return self.get_referenced_nodes(ua.ObjectIds.HasEncoding, ua.BrowseDirection.Forward)
+
+    def get_description_refs(self):
+        return self.get_referenced_nodes(ua.ObjectIds.HasDescription, ua.BrowseDirection.Forward)
+
     def get_references(self, refs=ua.ObjectIds.References, direction=ua.BrowseDirection.Both, nodeclassmask=ua.NodeClass.Unspecified, includesubtypes=True):
         """
         returns references of the node based on specific filter defined with:

opcua/ua/uatypes.py

@@ -1051,7 +1051,9 @@ def get_default_value(vtype):
         return None
     elif vtype == VariantType.Boolean:
         return False
-    elif vtype in (VariantType.SByte, VariantType.Byte, VariantType.ByteString):
+    elif vtype in (VariantType.SByte, VariantType.Byte):
+        return 0
+    elif vtype == VariantType.ByteString:
         return b""
     elif 4 <= vtype.value <= 9:
         return 0