Mercurial > libervia-backend
view sat/plugins/plugin_xep_0261.py @ 2845:42380a4f6433
quick frontend (app): new synchronisation mechanism:
on some frontend (notably on mobiles) frontend can be paused and lose synchronisation with backend, this can also happen if backend restart a connexion without resuming using stream management. To manage that, QuickApp now has a sync attribute which is True when the backend is in sync with frontend.
When synchronisation has been lost and is possible again, all widget will have their "resync" method called, which can be used to do necessary calls to update the status.
It's the responsability of each widget to then reset the "sync" attribute, once everything has been resynchronised.
author | Goffi <goffi@goffi.org> |
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date | Sat, 09 Mar 2019 16:33:31 +0100 |
parents | 003b8b4b56a7 |
children | 69e4716d6268 |
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#!/usr/bin/env python2 # -*- coding: utf-8 -*- # SAT plugin for Jingle (XEP-0261) # Copyright (C) 2009-2019 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 sat.core.i18n import _ from sat.core.constants import Const as C from sat.core.log import getLogger log = getLogger(__name__) from wokkel import disco, iwokkel from zope.interface import implements from twisted.words.xish import domish import uuid try: from twisted.words.protocols.xmlstream import XMPPHandler except ImportError: from wokkel.subprotocols import XMPPHandler NS_JINGLE_IBB = "urn:xmpp:jingle:transports:ibb:1" PLUGIN_INFO = { C.PI_NAME: "Jingle In-Band Bytestreams", C.PI_IMPORT_NAME: "XEP-0261", C.PI_TYPE: "XEP", C.PI_MODES: C.PLUG_MODE_BOTH, C.PI_PROTOCOLS: ["XEP-0261"], C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0047"], C.PI_MAIN: "XEP_0261", C.PI_HANDLER: "yes", C.PI_DESCRIPTION: _("""Implementation of Jingle In-Band Bytestreams"""), } class XEP_0261(object): NAMESPACE = NS_JINGLE_IBB # used by XEP-0260 plugin for transport-replace def __init__(self, host): log.info(_("plugin Jingle In-Band Bytestreams")) self.host = host self._j = host.plugins["XEP-0166"] # shortcut to access jingle self._ibb = host.plugins["XEP-0047"] # and in-band bytestream self._j.registerTransport( NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000 ) # must be the lowest priority def getHandler(self, client): return XEP_0261_handler() def jingleSessionInit(self, client, session, content_name): transport_elt = domish.Element((NS_JINGLE_IBB, "transport")) content_data = session["contents"][content_name] transport_data = content_data["transport_data"] transport_data["block_size"] = self._ibb.BLOCK_SIZE transport_elt["block-size"] = unicode(transport_data["block_size"]) transport_elt["sid"] = transport_data["sid"] = unicode(uuid.uuid4()) return transport_elt def jingleHandler(self, client, action, session, content_name, transport_elt): content_data = session["contents"][content_name] transport_data = content_data["transport_data"] if action in ( self._j.A_SESSION_ACCEPT, self._j.A_ACCEPTED_ACK, self._j.A_TRANSPORT_ACCEPT, ): pass elif action in (self._j.A_SESSION_INITIATE, self._j.A_TRANSPORT_REPLACE): transport_data["sid"] = transport_elt["sid"] elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER): peer_jid = session["peer_jid"] sid = transport_data["sid"] stream_object = content_data["stream_object"] if action == self._j.A_START: block_size = transport_data["block_size"] d = self._ibb.startStream( client, stream_object, peer_jid, sid, block_size ) d.chainDeferred(content_data["finished_d"]) else: d = self._ibb.createSession(client, stream_object, peer_jid, sid) d.chainDeferred(content_data["finished_d"]) else: log.warning(u"FIXME: unmanaged action {}".format(action)) return transport_elt class XEP_0261_handler(XMPPHandler): implements(iwokkel.IDisco) def getDiscoInfo(self, requestor, target, nodeIdentifier=""): return [disco.DiscoFeature(NS_JINGLE_IBB)] def getDiscoItems(self, requestor, target, nodeIdentifier=""): return []