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"""
SleekXMPP: The Sleek XMPP Library
XEP-0199 (Ping) support
Copyright (C) 2007 Kevin Smith
This file is part of SleekXMPP.
SleekXMPP is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
SleekXMPP 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with SleekXMPP; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
"""
from xml.etree import cElementTree as ET
from . import base
import time
import logging
class xep_0199(base.base_plugin):
"""XEP-0199 XMPP Ping"""
def plugin_init(self):
self.description = "XMPP Ping"
self.xep = "0199"
self.xmpp.add_handler("<iq type='get' xmlns='%s'><ping xmlns='http://www.xmpp.org/extensions/xep-0199.html#ns'/></iq>" % self.xmpp.default_ns, self.handler_ping)
self.running = False
if self.config.get('keepalive', True):
self.xmpp.add_event_handler('session_start', self.handler_pingserver, threaded=True)
def post_init(self):
self.xmpp['xep_0030'].add_feature('http://www.xmpp.org/extensions/xep-0199.html#ns')
def handler_pingserver(self, xml):
if not self.running:
time.sleep(self.config.get('frequency', 300))
while self.sendPing(self.xmpp.server, self.config.get('timeout', 30)) is not False:
time.sleep(self.config.get('frequency', 300))
logging.debug("Did not recieve ping back in time. Requesting Reconnect.")
self.xmpp.disconnect(reconnect=True)
def handler_ping(self, xml):
iq = self.xmpp.makeIqResult(xml.get('id', 'unknown'))
iq.attrib['to'] = xml.get('from', self.xmpp.server)
self.xmpp.send(iq)
def sendPing(self, jid, timeout = 30):
""" sendPing(jid, timeout)
Sends a ping to the specified jid, returning the time (in seconds)
to receive a reply, or None if no reply is received in timeout seconds.
"""
id = self.xmpp.getNewId()
iq = self.xmpp.makeIq(id)
iq.attrib['type'] = 'get'
iq.attrib['to'] = jid
ping = ET.Element('{http://www.xmpp.org/extensions/xep-0199.html#ns}ping')
iq.append(ping)
startTime = time.clock()
pingresult = self.xmpp.send(iq, self.xmpp.makeIq(id), timeout)
endTime = time.clock()
if pingresult == False:
#self.xmpp.disconnect(reconnect=True)
return False
return endTime - startTime
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