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-rw-r--r--sleekxmpp/stanza/roster.py25
1 files changed, 24 insertions, 1 deletions
diff --git a/sleekxmpp/stanza/roster.py b/sleekxmpp/stanza/roster.py
index 0b34d03b..4788ba72 100644
--- a/sleekxmpp/stanza/roster.py
+++ b/sleekxmpp/stanza/roster.py
@@ -36,7 +36,30 @@ class Roster(ElementBase):
namespace = 'jabber:iq:roster'
name = 'query'
plugin_attrib = 'roster'
- interfaces = set(('items',))
+ interfaces = set(('items', 'ver'))
+
+ def get_ver(self):
+ """
+ Ensure handling an empty ver attribute propery.
+
+ The ver attribute is special in that the presence of the
+ attribute with an empty value is important for boostrapping
+ roster versioning.
+ """
+ return self.xml.attrib.get('ver', None)
+
+ def set_ver(self, ver):
+ """
+ Ensure handling an empty ver attribute propery.
+
+ The ver attribute is special in that the presence of the
+ attribute with an empty value is important for boostrapping
+ roster versioning.
+ """
+ if ver is not None:
+ self.xml.attrib['ver'] = ver
+ else:
+ del self.xml.attrib['ver']
def set_items(self, items):
"""