Mercurial > libervia-backend
view sat/plugins/plugin_xep_0352.py @ 3153:2c7b42f53e9a
core (xmpp): avoid starting several clients at the same time:
a check is done to avoid running startConnection several times at once, which would lead
to the creation of several SatXMPPEntity instances at the same time, resulting in many
issues.
If startConnection is called while a previous one is not finished yet, a CancelError is
now raised.
author | Goffi <goffi@goffi.org> |
---|---|
date | Mon, 03 Feb 2020 13:46:24 +0100 |
parents | 559a625a236b |
children | be6d91572633 |
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#!/usr/bin/env python3 # SAT plugin for Explicit Message Encryption # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. from twisted.words.xish import domish from sat.core.i18n import _, D_ from sat.core.constants import Const as C from sat.core.log import getLogger log = getLogger(__name__) PLUGIN_INFO = { C.PI_NAME: "Client State Indication", C.PI_IMPORT_NAME: "XEP-0352", C.PI_TYPE: C.PLUG_TYPE_XEP, C.PI_PROTOCOLS: ["XEP-0352"], C.PI_DEPENDENCIES: [], C.PI_MAIN: "XEP_0352", C.PI_HANDLER: "no", C.PI_DESCRIPTION: D_("Notify server when frontend is not actively used, to limit " "traffic and save bandwidth and battery life"), } NS_CSI = "urn:xmpp:csi:0" class XEP_0352(object): def __init__(self, host): log.info(_("Client State Indication plugin initialization")) self.host = host host.registerNamespace("csi", NS_CSI) def isActive(self, client): try: if not client._xep_0352_enabled: return True return client._xep_0352_active except AttributeError: # _xep_0352_active can not be set if isActive is called before # profileConnected has been called log.debug("isActive called when XEP-0352 plugin has not yet set the " "attributes") return True def profileConnected(self, client): if (NS_CSI, 'csi') in client.xmlstream.features: log.info(_("Client State Indication is available on this server")) client._xep_0352_enabled = True client._xep_0352_active = True else: log.warning(_("Client State Indication is not available on this server, some" " bandwidth optimisations can't be used.")) client._xep_0352_enabled = False def setInactive(self, client): if self.isActive(client): inactive_elt = domish.Element((NS_CSI, 'inactive')) client.send(inactive_elt) client._xep_0352_active = False log.info("inactive state set") def setActive(self, client): if not self.isActive(client): active_elt = domish.Element((NS_CSI, 'active')) client.send(active_elt) client._xep_0352_active = True log.info("active state set")