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# Slixmpp: The Slick XMPP Library
# Copyright (C) 2012 Nathanael C. Fritz
# This file is part of Slixmpp.
# See the file LICENSE for copying permission.
import logging
from slixmpp.stanza import StreamFeatures
from slixmpp.features.feature_rosterver import stanza
from slixmpp.xmlstream import register_stanza_plugin
from slixmpp.plugins.base import BasePlugin
from typing import ClassVar, Set
log = logging.getLogger(__name__)
class FeatureRosterVer(BasePlugin):
name = 'feature_rosterver'
description = 'RFC 6121: Stream Feature: Roster Versioning'
dependences: ClassVar[Set[str]] = set()
stanza = stanza
def plugin_init(self):
self.xmpp.register_feature('rosterver',
self._handle_rosterver,
restart=False,
order=9000)
register_stanza_plugin(StreamFeatures, stanza.RosterVer)
def _handle_rosterver(self, features):
"""Enable using roster versioning.
Arguments:
features -- The stream features stanza.
"""
log.debug("Enabling roster versioning.")
self.xmpp.features.add('rosterver')
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