Add caching support to xep_0030.

New plugin configuration options:

    use_cache    - Enable caching disco info results. Defaults to True
    wrap_results - Always return disco results in an Iq stanza. Defaults
                   to False

Node handler changes:

    Handlers now take four arguments: jid, node, ifrom, data

    Most older style handlers will still work, depending on if they
    raise a TypeError for incorrect number of arguments. Handlers that
    used *args may not work.

New get_info options:

    cached - Passing cached=True to get_info() will attempt to load
             results from the cache. If nothing is found, a query
             will be sent as normal. If set to False, the cache
             will be skipped, even if it contains results.

New method:

    supports() - Given a JID/node pair and a feature, return True
                 if the feature is supported, False if not, and
                 None if there was a timeout. By default, the search
                 will use the cache.

1 files changed, 3 insertions, 3 deletions

diff --git a/sleekxmpp/plugins/xep_0128/extended_disco.py b/sleekxmpp/plugins/xep_0128/extended_disco.py
index 63b3cfee..5bb78320 100644
--- a/sleekxmpp/plugins/xep_0128/extended_disco.py
+++ b/sleekxmpp/plugins/xep_0128/extended_disco.py
@@ -76,7 +76,7 @@ class xep_0128(base_plugin):
                     as extended information, replacing any
                     existing extensions.
         """
-        self.disco._run_node_handler('set_extended_info', jid, node, kwargs)
+        self.disco._run_node_handler('set_extended_info', jid, node, None, kwargs)
 
     def add_extended_info(self, jid=None, node=None, **kwargs):
         """
@@ -88,7 +88,7 @@ class xep_0128(base_plugin):
             data -- Either a form, or a list of forms to add
                     as extended information.
         """
-        self.disco._run_node_handler('add_extended_info', jid, node, kwargs)
+        self.disco._run_node_handler('add_extended_info', jid, node, None, kwargs)
 
     def del_extended_info(self, jid=None, node=None, **kwargs):
         """
@@ -98,4 +98,4 @@ class xep_0128(base_plugin):
             jid  -- The JID to modify.
             node -- The node to modify.
         """
-        self.disco._run_node_handler('del_extended_info', jid, node, kwargs)
+        self.disco._run_node_handler('del_extended_info', jid, node, None, kwargs)