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stream resumption (needs testing)

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This commit is contained in:
Jefry Lagrange 2011-06-06 23:34:19 -04:00
parent e53f95c87e
commit 89cd4b2e45
5 changed files with 88 additions and 25 deletions
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19
src/common/connection.py
View file

@ -57,9 +57,9 @@ from common import gajim
from common import gpg
from common import passwords
from common import exceptions
from connection_handlers import *
from xmpp import Smacks
from string import Template
import logging
log = logging.getLogger('gajim.c.connection')
@ -711,6 +711,9 @@ class Connection(CommonConnection, ConnectionHandlers):
self.private_storage_supported = True
self.streamError = ''
self.secret_hmac = str(random.random())[2:]
self.sm = Smacks(self)
gajim.ged.register_event_handler('privacy-list-received', ged.CORE,
self._nec_privacy_list_received)
gajim.ged.register_event_handler('agent-info-error-received', ged.CORE,
@ -1587,12 +1590,18 @@ class Connection(CommonConnection, ConnectionHandlers):
self.connection.set_send_timeout2(self.pingalives, self.sendPing)
self.connection.onreceive(None)
self.request_message_archiving_preferences()
self.privacy_rules_requested = False
self.discoverInfo(gajim.config.get_per('accounts', self.name, 'hostname'),
id_prefix='Gajim_')
# If we are not resuming, we ask for discovery info
# and archiving preferences
if not self.sm.resuming:
self.request_message_archiving_preferences()
self.discoverInfo(gajim.config.get_per('accounts', self.name, 'hostname'),
id_prefix='Gajim_')
self.sm.resuming = False # back to previous state
# Discover Stun server(s)
gajim.resolver.resolve('_stun._udp.' + helpers.idn_to_ascii(
self.connected_hostname), self._on_stun_resolved)

1
src/common/xmpp/__init__.py
View file

@ -15,3 +15,4 @@ import simplexml, protocol, auth_nb, transports_nb, roster_nb
import dispatcher_nb, features_nb, idlequeue, bosh, tls_nb, proxy_connectors
from client_nb import NonBlockingClient
from plugin import PlugIn
from smacks import Smacks

13
src/common/xmpp/auth_nb.py
View file

@ -643,13 +643,18 @@ class NonBlockingBind(PlugIn):
self._owner.User = jid.getNode()
self._owner.Resource = jid.getResource()
# Only negociate stream management after bounded
sm = self._owner._caller.sm
if self.supports_sm:
# starts negociation
sm = Smacks(self._owner)
self._owner.Dispatcher.supports_sm = True
if sm._owner and sm.resumption:
sm.set_owner(self._owner)
sm.resume_request()
else:
sm.set_owner(self._owner)
sm.negociate()
self._owner.Dispatcher.sm = sm
sm.negociate()
if hasattr(self, 'session') and self.session == -1:
# Server don't want us to initialize a session
log.info('No session required.')

3
src/common/xmpp/dispatcher_nb.py
View file

@ -420,7 +420,8 @@ class XMPPDispatcher(PlugIn):
typ = ''
stanza.props = stanza.getProperties()
ID = stanza.getID()
if self.supports_sm and (stanza.getName() != 'r' and
# If server supports stream management
if self.sm != None and (stanza.getName() != 'r' and
stanza.getName() != 'a' and
stanza.getName() != 'enabled') :
# increments the number of stanzas that has been handled

77
src/common/xmpp/smacks.py
View file

@ -13,15 +13,21 @@ class Smacks():
'''
def __init__(self, owner):
self._owner = owner
def __init__(self, con):
self.con = con # Connection object
self.out_h = 0 # Outgoing stanzas handled
self.in_h = 0 # Incoming stanzas handled
self.uqueue = [] # Unhandled stanzas queue
self.sesion_id = None
self.supports_resume = False # If server supports resume
self.session_id = None
self.resumption = False # If server supports resume
# Max number of stanzas in queue before making a request
self.max_queue = 5
self._owner = None
self.resuming = False
def set_owner(self, owner):
self._owner = owner
# Register handlers
owner.Dispatcher.RegisterNamespace(NS_STREAM_MGMT)
owner.Dispatcher.RegisterHandler('enabled', self._neg_response
@ -30,19 +36,41 @@ class Smacks():
,xmlns=NS_STREAM_MGMT)
owner.Dispatcher.RegisterHandler('a', self.check_ack
,xmlns=NS_STREAM_MGMT)
def negociate(self):
stanza = Acks()
stanza.buildEnable(resume=True)
self._owner.Connection.send(stanza, now=True)
owner.Dispatcher.RegisterHandler('resumed', self.check_ack
,xmlns=NS_STREAM_MGMT)
owner.Dispatcher.RegisterHandler('failed', self.error_handling
,xmlns=NS_STREAM_MGMT)
def _neg_response(self, disp, stanza):
r = stanza.getAttr('resume')
if r == 'true':
self.supports_resume = True
self.sesion_id = stanza.getAttr(id)
if r == 'true' or r == 'True' or r == '1':
self.resumption = True
self.session_id = stanza.getAttr('id')
if r == 'false' or r == 'False' or r == '0':
self.negociate(False)
def negociate(self, resume=True):
# Every time we attempt to negociate, we must erase all previous info
# about any previous session
self.uqueue = []
self.in_h = 0
self.out_h = 0
self.session_id = None
stanza = Acks()
stanza.buildEnable(resume)
self._owner.Connection.send(stanza, now=True)
def resume_request(self):
if not self.session_id:
self.resuming = False
log.error('Attempted to resume without a valid session id ')
return
resume = Acks()
resume.buildResume(self.in_h, self.session_id)
self._owner.Connection.send(resume, True)
def send_ack(self, disp, stanza):
ack = Acks()
@ -70,5 +98,24 @@ class Smacks():
while (len(self.uqueue) > diff):
self.uqueue.pop(0)
if stanza.getName() == 'resumed':
self.resuming = True
if self.uqueue != []:
for i in self.uqueue:
self._owner.Connection.send(i, False)
def error_handling(self, disp, stanza): # NEEDS TESTING
tag = stanza.getTag('item-not-found')
# If the server doesn't recognize previd, forget about resuming
# Ask for service discovery, etc..
if tag:
self.negociate()
self.resuming = False
self.con._discover_server_at_connection(self.con.connection)
tag = stanza.getTag('feature-not-implemented')
# Doesn't support resumption
if tag:
self.negociate(False)