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authorFlorent Le Coz <louiz@louiz.org>2014-07-17 14:19:04 +0200
committerFlorent Le Coz <louiz@louiz.org>2014-07-17 14:19:04 +0200
commit5ab77c745270d7d5c016c1dc7ef2a82533a4b16e (patch)
tree259377cc666f8b9c7954fc4e7b8f7a912bcfe101 /sleekxmpp/plugins/xep_0199/ping.py
parente5582694c07236e6830c20361840360a1dde37f3 (diff)
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diff --git a/sleekxmpp/plugins/xep_0199/ping.py b/sleekxmpp/plugins/xep_0199/ping.py
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-"""
- SleekXMPP: The Sleek XMPP Library
- Copyright (C) 2010 Nathanael C. Fritz
- This file is part of SleekXMPP.
-
- See the file LICENSE for copying permission.
-"""
-
-import time
-import logging
-
-from sleekxmpp.jid import JID
-from sleekxmpp.stanza import Iq
-from sleekxmpp.exceptions import IqError, IqTimeout
-from sleekxmpp.xmlstream import register_stanza_plugin
-from sleekxmpp.xmlstream.matcher import StanzaPath
-from sleekxmpp.xmlstream.handler import Callback
-from sleekxmpp.plugins import BasePlugin
-from sleekxmpp.plugins.xep_0199 import stanza, Ping
-
-
-log = logging.getLogger(__name__)
-
-
-class XEP_0199(BasePlugin):
-
- """
- XEP-0199: XMPP Ping
-
- Given that XMPP is based on TCP connections, it is possible for the
- underlying connection to be terminated without the application's
- awareness. Ping stanzas provide an alternative to whitespace based
- keepalive methods for detecting lost connections.
-
- Also see <http://www.xmpp.org/extensions/xep-0199.html>.
-
- Attributes:
- keepalive -- If True, periodically send ping requests
- to the server. If a ping is not answered,
- the connection will be reset.
- interval -- Time in seconds between keepalive pings.
- Defaults to 300 seconds.
- timeout -- Time in seconds to wait for a ping response.
- Defaults to 30 seconds.
- Methods:
- send_ping -- Send a ping to a given JID, returning the
- round trip time.
- """
-
- name = 'xep_0199'
- description = 'XEP-0199: XMPP Ping'
- dependencies = set(['xep_0030'])
- stanza = stanza
- default_config = {
- 'keepalive': False,
- 'interval': 300,
- 'timeout': 30
- }
-
- def plugin_init(self):
- """
- Start the XEP-0199 plugin.
- """
-
- register_stanza_plugin(Iq, Ping)
-
- self.xmpp.register_handler(
- Callback('Ping',
- StanzaPath('iq@type=get/ping'),
- self._handle_ping))
-
- if self.keepalive:
- self.xmpp.add_event_handler('session_start',
- self.enable_keepalive,
- threaded=True)
- self.xmpp.add_event_handler('session_end',
- self.disable_keepalive)
-
- def plugin_end(self):
- self.xmpp['xep_0030'].del_feature(feature=Ping.namespace)
- self.xmpp.remove_handler('Ping')
- if self.keepalive:
- self.xmpp.del_event_handler('session_start',
- self.enable_keepalive)
- self.xmpp.del_event_handler('session_end',
- self.disable_keepalive)
-
- def session_bind(self, jid):
- self.xmpp['xep_0030'].add_feature(Ping.namespace)
-
- def enable_keepalive(self, interval=None, timeout=None):
- if interval:
- self.interval = interval
- if timeout:
- self.timeout = timeout
-
- self.keepalive = True
- self.xmpp.schedule('Ping keepalive',
- self.interval,
- self._keepalive,
- repeat=True)
-
- def disable_keepalive(self, event=None):
- self.xmpp.scheduler.remove('Ping keepalive')
-
- def _keepalive(self, event=None):
- log.debug("Keepalive ping...")
- try:
- rtt = self.ping(self.xmpp.boundjid.host, timeout=self.timeout)
- except IqTimeout:
- log.debug("Did not recieve ping back in time." + \
- "Requesting Reconnect.")
- self.xmpp.reconnect()
- else:
- log.debug('Keepalive RTT: %s' % rtt)
-
- def _handle_ping(self, iq):
- """Automatically reply to ping requests."""
- log.debug("Pinged by %s", iq['from'])
- iq.reply().send()
-
- def send_ping(self, jid, ifrom=None, block=True, timeout=None, callback=None):
- """Send a ping request.
-
- Arguments:
- jid -- The JID that will receive the ping.
- ifrom -- Specifiy the sender JID.
- block -- Indicate if execution should block until
- a pong response is received. Defaults
- to True.
- timeout -- Time in seconds to wait for a response.
- Defaults to self.timeout.
- callback -- Optional handler to execute when a pong
- is received. Useful in conjunction with
- the option block=False.
- """
- if not timeout:
- timeout = self.timeout
-
- iq = self.xmpp.Iq()
- iq['type'] = 'get'
- iq['to'] = jid
- iq['from'] = ifrom
- iq.enable('ping')
-
- return iq.send(block=block, timeout=timeout, callback=callback)
-
- def ping(self, jid=None, ifrom=None, timeout=None):
- """Send a ping request and calculate RTT.
-
- Arguments:
- jid -- The JID that will receive the ping.
- ifrom -- Specifiy the sender JID.
- timeout -- Time in seconds to wait for a response.
- Defaults to self.timeout.
- """
- own_host = False
- if not jid:
- if self.xmpp.is_component:
- jid = self.xmpp.server
- else:
- jid = self.xmpp.boundjid.host
- jid = JID(jid)
- if jid == self.xmpp.boundjid.host or \
- self.xmpp.is_component and jid == self.xmpp.server:
- own_host = True
-
- if not timeout:
- timeout = self.timeout
-
- start = time.time()
-
- log.debug('Pinging %s' % jid)
- try:
- self.send_ping(jid, ifrom=ifrom, timeout=timeout)
- except IqError as e:
- if own_host:
- rtt = time.time() - start
- log.debug('Pinged %s, RTT: %s', jid, rtt)
- return rtt
- else:
- raise e
- else:
- rtt = time.time() - start
- log.debug('Pinged %s, RTT: %s', jid, rtt)
- return rtt