sip-session3
No OneTemporary
Actions

Size

144 KB

Referenced Files

None

Subscribers

None

sip-session3
View Options

	#!/usr/bin/env python3

	import os
	import re
	import signal
	import sys
	import urllib.request, urllib.parse, urllib.error
	import random
	import requests

	from collections import defaultdict
	from datetime import datetime, timedelta
	from dateutil.tz import tzlocal
	from itertools import chain
	from lxml import html
	from optparse import OptionParser
	from threading import Event, Thread
	from time import sleep

	from application import log
	from application.notification import IObserver, NotificationCenter
	from application.python.queue import EventQueue
	from application.python import Null
	from eventlib import api
	from twisted.internet import reactor
	from zope.interface import implementer

	from otr import OTRTransport, OTRState, SMPStatus
	from otr.exceptions import IgnoreMessage, UnencryptedMessage, EncryptedMessageError, OTRError, OTRFinishedError

	from sipsimple.core import Engine, FromHeader, Message, RouteHeader, SIPCoreError, SIPURI, ToHeader

	from sipsimple.account import Account, AccountManager, BonjourAccount
	from sipsimple.application import SIPApplication
	from sipsimple.audio import WavePlayer
	from sipsimple.configuration import ConfigurationError
	from sipsimple.configuration.settings import SIPSimpleSettings
	from sipsimple.core import Route
	from sipsimple.core import CORE_REVISION, PJ_VERSION, PJ_SVN_REVISION
	from sipsimple import __version__ as version
	from sipsimple.lookup import DNSLookup
	from sipsimple.payloads.iscomposing import IsComposingMessage
	from sipsimple.session import IllegalStateError, Session
	from sipsimple.streams import MediaStreamRegistry
	from sipsimple.streams.msrp.filetransfer import FileSelector
	from sipsimple.streams.msrp.chat import CPIMPayload, SimplePayload, CPIMParserError, ChatIdentity, OTREncryption
	from sipsimple.storage import FileStorage
	from sipsimple.threading.green import run_in_green_thread
	from sipsimple.util import ISOTimestamp

	from sipclient.configuration import config_directory
	from sipclient.configuration.account import AccountExtension
	from sipclient.configuration.datatypes import ResourcePath
	from sipclient.configuration.settings import SIPSimpleSettingsExtension
	from sipclient.log import Logger
	from sipclient.system import IPAddressMonitor, copy_default_certificates
	from sipclient.ui import Prompt, Question, RichText, UI


	# This is a helper function for sending formatted notice messages
	def show_notice(text, bold=True):
	ui = UI()
	if isinstance(text, list):
	ui.writelines([RichText(line, bold=bold) if not isinstance(line, RichText) else line for line in text])
	elif isinstance(text, RichText):
	ui.write(text)
	else:
	ui.write(RichText(text, bold=bold))


	# Utility classes
	#

	class BonjourNeighbour(object):
	def __init__(self, neighbour, uri, display_name, host):
	self.display_name = display_name
	self.host = host
	self.neighbour = neighbour
	self.uri = uri


	class RTPStatisticsThread(Thread):
	def __init__(self):
	Thread.__init__(self)
	self.setDaemon(True)
	self.stopped = False

	def run(self):
	application = SIPSessionApplication()
	while not self.stopped:
	if application.active_session is not None and application.active_session.streams:
	audio_stream = next((stream for stream in application.active_session.streams if stream.type == 'audio'), None)
	if audio_stream is not None:
	stats = audio_stream.statistics
	if stats is not None:
	reactor.callFromThread(show_notice, '%s RTP statistics: RTT=%d ms, packet loss=%.1f%%, jitter RX/TX=%d/%d ms' %
	(datetime.now().replace(microsecond=0),
	stats['rtt']['avg'] / 1000,
	100.0 * stats['rx']['packets_lost'] / stats['rx']['packets'] if stats['rx']['packets'] else 0,
	stats['rx']['jitter']['avg'] / 1000,
	stats['tx']['jitter']['avg'] / 1000))
	sleep(10)

	def stop(self):
	self.stopped = True


	class QueuedMessage(object):
	def __init__(self, msg_id, content, content_type='text/plain', call_id=None):
	self.id = msg_id
	self.content = content
	self.timestamp = None
	self.content_type = content_type
	self.encrypted = False
	self.call_id = None


	class OTRInternalMessage(QueuedMessage):
	def __init__(self, content):
	super(OTRInternalMessage, self).__init__('OTR', content, 'text/plain')


	@implementer(IObserver)
	class MessageSession(object):

	def __init__(self, account, target, route=None, use_cpim=False):
	self.account = account
	self.target = target
	self.routes = None
	self.use_cpim = use_cpim
	self.msg_id = 0
	self.started = False
	self.msg_map = {}
	self.route = None
	self.ended = False
	self.route = route

	self.encryption = OTREncryption(self)

	self.message_queue = EventQueue(self._send_message)

	target = self.target

	if '@' not in target:
	target = '%s@%s' % (target, self.account.id.domain)

	if not target.startswith('sip:') and not target.startswith('sips:'):
	target = 'sip:' + target

	self.remote_uri = str(target).split(":")[1]

	try:
	self.target_uri = SIPURI.parse(target)
	except SIPCoreError:
	show_notice('Illegal SIP URI: %s' % target)
	self.target_uri = None

	self.notification_center = NotificationCenter()

	if self.route:
	show_notice('Message session started with %s via %s' % (self.target, self.route))
	else:
	show_notice('Message session started with %s' % self.target)

	def end(self):
	show_notice('Ending message session to %s' % self.target)
	if self.encryption.active:
	self.encryption.stop()

	self.notification_center = None
	self.message_queue = None
	self.encryption = None
	self.ended = True

	def start(self):
	if self.ended:
	return

	if self.route:
	self.routes = [self.route]
	show_notice('%s Session to %s will start via %s' % (datetime.now().replace(microsecond=0), self.remote_uri, self.routes[0]))

	if not self.started:
	self.message_queue.start()

	if not self.encryption.active:
	self.encryption.start()

	self.started = True

	return

	lookup = DNSLookup()
	self.notification_center.add_observer(self, sender=lookup)
	settings = SIPSimpleSettings()

	if isinstance(self.account, Account) and self.account.sip.outbound_proxy is not None:
	uri = SIPURI(host=self.account.sip.outbound_proxy.host, port=self.account.sip.outbound_proxy.port, parameters={'transport': self.account.sip.outbound_proxy.transport})
	elif isinstance(self.account, Account) and self.account.sip.always_use_my_proxy:
	uri = SIPURI(host=self.account.id.domain)
	else:
	uri = self.target_uri

	lookup.lookup_sip_proxy(uri, settings.sip.transport_list, tls_name=self.account.sip.tls_name if self.account is not BonjourAccount() else None)

	def handle_notification(self, notification):
	if self.ended:
	return

	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def inject_otr_message(self, data):
	if not self.encryption.active:
	ui = UI()
	ui.status = 'Negotiating OTR encryption...'
	messageObject = OTRInternalMessage(data)
	self.send_message(messageObject)

	def _NH_DNSLookupDidSucceed(self, notification):
	self.notification_center.remove_observer(self, sender=notification.sender)

	self.routes = notification.data.result

	show_notice('%s Session to %s will start via %s' % (datetime.now().replace(microsecond=0), self.remote_uri, self.routes[0]))

	if not self.started:
	self.message_queue.start()

	if not self.encryption.active:
	self.encryption.start()

	self.started = True

	def _NH_DNSLookupDidFail(self, notification):
	self.notification_center.remove_observer(self, sender=notification.sender)
	show_notice('%s Session to %s failed: DNS lookup failed' % (datetime.now().replace(microsecond=0), self.remote_uri))
	self.message_queue.stop()

	def send_message(self, message):
	if not self.routes:
	self.start()

	self.msg_id = self.msg_id + 1

	if not isinstance(message, OTRInternalMessage):
	messageObject = QueuedMessage(self.msg_id , message)
	self.message_queue.put(messageObject)
	else:
	self.message_queue.put(message)

	return self.msg_id

	def _send_message(self, message):
	if not self.routes:
	return

	if not self.route:
	self.route = self.routes.pop(0)

	identity = str(self.account.uri)

	if self.account.display_name:
	identity = '"%s" <%s>' % (self.account.display_name, identity)

	if isinstance(message.content, str):
	charset = 'utf8'
	message.content = message.content.encode(charset)
	else:
	charset = None

	what_type = None

	if not isinstance(message, OTRInternalMessage):
	try:
	message.content = self.encryption.otr_session.handle_output(message.content, message.content_type)
	except OTRError as e:
	if 'has ended the private conversation' in str(e):
	show_notice('Encryption has been disabled by remote party, please resend the message again')
	self.encryption.stop()
	else:
	show_notice('Failed to encrypt outgoing message: %s' % str(e))
	return
	except OTRFinishedError:
	show_notice('Encryption has finished, please resend the message again')
	return

	if self.encryption.active and not message.content.startswith(b'?OTR:'):
	show_notice('Encryption has been disabled by remote party, please resend the message again')
	self.encryption.stop()
	return None

	else:
	what_type = 'OTR'

	if message.timestamp is None:
	message.timestamp = ISOTimestamp.now()


	if self.use_cpim:
	content_type = 'message/cpim'
	payload = CPIMPayload(message.content,
	'text/plain',
	charset='utf-8',
	sender=ChatIdentity(self.account.uri, self.account.display_name),
	recipients=[ChatIdentity(self.remote_uri, None)])
	else:
	payload = SimplePayload(message.content, message.content_type, charset)

	content, content_type = payload.encode()

	message_request = Message(FromHeader(self.account.uri, self.account.display_name),
	ToHeader(self.target_uri),
	RouteHeader(self.route.uri),
	content_type,
	content,
	credentials=self.account.credentials)

	self.notification_center.add_observer(self, sender=message_request)


	self.msg_map[message_request] = message
	message_request.send(15)
	call_id = message_request._request.call_id.decode()
	message.call_id = call_id

	if message.id != 'OTR':
	if '?OTR:' in content.decode():
	show_notice('Encrypted message %s sent to %s' % (call_id, self.route.uri))
	message.encrypted = True
	else:
	show_notice('Message %s sent to %s' % (call_id, self.route.uri))
	else:
	show_notice('OTR message %s sent' % call_id)


	def handle_incoming(self, from_header, content_type, data, call_id):
	self.msg_id = self.msg_id + 1

	if content_type == 'message/cpim':
	try:
	payload = CPIMPayload.decode(data)
	except CPIMParserError as e:
	show_notice('CPIM parse error: %s' % str(e))
	return None
	else:

	if payload.sender:
	identity = '%s@%s' % (payload.sender.uri.user.decode(), payload.sender.uri.host.decode())
	if from_header.uri == cpim_message.sender.uri:
	if payload.sender.display_name:
	identity = '"%s" <%s>' % (payload.sender.display_name, identity)
	elif from_header.display_name:
	identity = '"%s" <%s>' % (from_header.display_name, identity)
	else:
	identity = from_header

	else:
	payload = SimplePayload.decode(data, content_type)
	from_header = FromHeader.new(from_header)
	identity = '%s@%s' % (from_header.uri.user.decode(), from_header.uri.host.decode())

	content = payload.content
	content_type = payload.content_type

	try:
	content = self.encryption.otr_session.handle_input(content, content_type)
	except IgnoreMessage:
	show_notice('OTR message %s received' % call_id)
	return None
	except UnencryptedMessage:
	encrypted = False
	encryption_active = True
	except EncryptedMessageError as e:
	show_notice('OTP encrypted message error: %s' % str(e))
	return None
	except (OTRError, OTRFinishedError) as e:
	show_notice('OTP error: %s' % str(e))
	return None
	else:
	encrypted = encryption_active = self.encryption.active

	if payload.charset is not None:
	content = content.decode(payload.charset)
	elif payload.content_type.startswith('text/'):
	content.decode('utf8')

	return (content_type, content, identity, self.msg_id, encrypted)

	def _NH_SIPMessageDidSucceed(self, notification):
	self.notification_center.remove_observer(self, sender=notification.sender)

	try:
	message = self.msg_map[notification.sender]
	except KeyError:
	message = None
	else:
	del(self.msg_map[notification.sender])

	if not message:
	return

	if message.id in (None, 'OTR'):
	return

	if notification.data.code == 202:
	show_notice('%s Message %s to %s will be delivered later by the server' % (datetime.now().replace(microsecond=0), message.id, self.remote_uri))
	elif notification.data.code == 200:
	show_notice('%s Message %s received by %s' % (datetime.now().replace(microsecond=0), message.id, self.remote_uri))
	else:
	show_notice('%s Message %s received by %s (code %d)' % (datetime.now().replace(microsecond=0), message.id, self.remote_uri, notification.data.code ))


	def _NH_SIPMessageDidFail(self, notification):
	self.notification_center.remove_observer(self, sender=notification.sender)
	try:
	message = self.msg_map[notification.sender]
	except KeyError:
	message = None
	else:
	del(self.msg_map[notification.sender])

	if not message:
	return

	if message.id in (None, 'OTR'):
	return

	if hasattr(notification.data, 'headers'):
	server = notification.data.headers.get('Server', Null).body
	client = notification.data.headers.get('Client', Null).body
	else:
	server = 'local'
	client = 'local'

	if notification.data.code == 408 and self.routes:
	pass
	# self.route = self.routes.pop(0)
	# TO DO retry

	if message.encrypted:
	show_notice('%s Encrypted message %s to %s failed on %s: %s (%d)' % (datetime.now().replace(microsecond=0), message.id, self.remote_uri, server or client, notification.data.reason.decode(), notification.data.code))
	else:
	show_notice('%s Message %s to %s failed on %s: %s (%d)' % (datetime.now().replace(microsecond=0), message.id, self.remote_uri, server or client, notification.data.reason.decode() if isinstance(notification.data.reason, bytes) else notification.data.reason, notification.data.code))


	OTRTransport.register(MessageSession)


	@implementer(IObserver)
	class OutgoingCallInitializer(object):

	def __init__(self, account, target, audio=False, chat=False, video=False):
	self.account = account
	self.target = target
	self.streams = []
	if video:
	self.streams.append(MediaStreamRegistry.VideoStream())
	if audio:
	self.streams.append(MediaStreamRegistry.AudioStream())
	if chat:
	self.streams.append(MediaStreamRegistry.ChatStream())
	self.wave_ringtone = None

	def start(self):
	if isinstance(self.account, BonjourAccount) and '@' not in self.target:
	show_notice('Bonjour mode requires a host in the destination address')
	return
	if '@' not in self.target:
	self.target = '%s@%s' % (self.target, self.account.id.domain)
	if not self.target.startswith('sip:') and not self.target.startswith('sips:'):
	self.target = 'sip:' + self.target

	try:
	self.target = SIPURI.parse(self.target)
	except SIPCoreError:
	show_notice('Illegal SIP URI: %s' % self.target)
	else:
	if '.' not in self.target.host.decode() and not isinstance(self.account, BonjourAccount):
	self.target.host = '%s.%s' % (self.target.host, self.account.id.domain)
	lookup = DNSLookup()
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=lookup)
	settings = SIPSimpleSettings()
	if isinstance(self.account, Account) and self.account.sip.outbound_proxy is not None:
	uri = SIPURI(host=self.account.sip.outbound_proxy.host, port=self.account.sip.outbound_proxy.port, parameters={'transport': self.account.sip.outbound_proxy.transport})
	elif isinstance(self.account, Account) and self.account.sip.always_use_my_proxy:
	uri = SIPURI(host=self.account.id.domain)
	else:
	uri = self.target

	show_notice('DNS lookup for %s' % uri)
	lookup.lookup_sip_proxy(uri, settings.sip.transport_list, tls_name=self.account.sip.tls_name if self.account is not BonjourAccount() else None)

	def handle_notification(self, notification):
	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def _NH_DNSLookupDidSucceed(self, notification):
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=notification.sender)
	session = Session(self.account)
	notification_center.add_observer(self, sender=session)
	session.connect(ToHeader(self.target), routes=notification.data.result, streams=self.streams)
	application = SIPSessionApplication()
	application.outgoing_session = session

	def _NH_DNSLookupDidFail(self, notification):
	show_notice('Call to %s failed: DNS lookup error: %s' % (self.target, notification.data.error))
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=notification.sender)

	def _NH_SIPSessionNewOutgoing(self, notification):
	session = notification.sender
	local_identity = str(session.local_identity.uri)
	if session.local_identity.display_name:
	local_identity = '"%s" <%s>' % (session.local_identity.display_name, local_identity)
	remote_identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	remote_identity = '"%s" <%s>' % (session.remote_identity.display_name, remote_identity)
	show_notice("Initiating SIP session from %s to %s via %s..." % (local_identity, remote_identity, session.route))
	self.message_session_to = None

	def _NH_SIPSessionGotRingIndication(self, notification):
	settings = SIPSimpleSettings()
	ui = UI()
	ringtone = settings.sounds.audio_outbound
	if ringtone and self.wave_ringtone is None:
	self.wave_ringtone = WavePlayer(SIPApplication.voice_audio_mixer, ringtone.path.normalized, volume=ringtone.volume, loop_count=0, pause_time=2)
	SIPApplication.voice_audio_bridge.add(self.wave_ringtone)
	self.wave_ringtone.start()
	ui.status = 'Ringing...'

	def _NH_SIPSessionWillStart(self, notification):
	ui = UI()
	if self.wave_ringtone:
	self.wave_ringtone.stop()
	SIPApplication.voice_audio_bridge.remove(self.wave_ringtone)
	self.wave_ringtone = None
	ui.status = 'Connecting...'

	def _NH_SIPSessionDidStart(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)
	ui.status = 'Connected'
	reactor.callLater(2, setattr, ui, 'status', None)

	application = SIPSessionApplication()
	application.outgoing_session = None

	for stream in notification.data.streams:
	if stream.type in ('audio', 'video'):
	show_notice('%s session established using %s codec at %sHz' % (stream.type.title(), stream.codec.capitalize(), stream.sample_rate))
	if stream.ice_active:
	show_notice('%s RTP endpoints %s:%d (ICE type %s) <-> %s:%d (ICE type %s)' % (stream.type.title(),
	stream.local_rtp_address,
	stream.local_rtp_port,
	stream.local_rtp_candidate.type.lower(),
	stream.remote_rtp_address,
	stream.remote_rtp_port,
	stream.remote_rtp_candidate.type.lower()
	)
	)
	else:
	show_notice('%s RTP endpoints %s:%d <-> %s:%d' % (stream.type.title(), stream.local_rtp_address, stream.local_rtp_port, stream.remote_rtp_address, stream.remote_rtp_port))


	if session.remote_user_agent is not None:
	show_notice('Remote SIP User Agent is "%s"' % session.remote_user_agent)

	def _NH_SIPSessionDidFail(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)

	ui = UI()
	ui.status = None

	application = SIPSessionApplication()
	application.outgoing_session = None

	if self.wave_ringtone:
	self.wave_ringtone.stop()
	SIPApplication.voice_audio_bridge.remove(self.wave_ringtone)
	self.wave_ringtone = None
	if notification.data.failure_reason == 'user request' and notification.data.code == 487:
	show_notice('SIP session cancelled')
	elif notification.data.failure_reason == 'user request':
	show_notice('SIP session rejected by user (%d %s)' % (notification.data.code, notification.data.reason))
	else:
	show_notice('SIP session failed: %s' % notification.data.failure_reason)


	@implementer(IObserver)
	class IncomingCallInitializer(object):

	sessions = 0
	tone_ringtone = None

	def __init__(self, session, auto_answer_interval=None):
	self.session = session
	self.auto_answer_interval = auto_answer_interval
	self.question = None

	def start(self):
	IncomingCallInitializer.sessions += 1
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=self.session)

	# start auto-answer
	self.answer_timer = None
	if self.auto_answer_interval == 0:
	self.session.accept(self.session.proposed_streams)
	return
	elif self.auto_answer_interval and self.auto_answer_interval > 0:
	self.answer_timer = reactor.callFromThread(reactor.callLater, self.auto_answer_interval, self.session.accept, self.session.proposed_streams)

	# start ringing
	application = SIPSessionApplication()
	self.wave_ringtone = None
	if application.active_session is None:
	if IncomingCallInitializer.sessions == 1:
	ringtone = self.session.account.sounds.audio_inbound.sound_file if self.session.account.sounds.audio_inbound is not None else None
	if ringtone:
	self.wave_ringtone = WavePlayer(SIPApplication.alert_audio_mixer, ringtone.path.normalized, volume=ringtone.volume, loop_count=0, pause_time=2)
	SIPApplication.alert_audio_bridge.add(self.wave_ringtone)
	self.wave_ringtone.start()
	elif IncomingCallInitializer.tone_ringtone is None:
	IncomingCallInitializer.tone_ringtone = WavePlayer(SIPApplication.voice_audio_mixer, ResourcePath('sounds/ring_tone.wav').normalized, loop_count=0, pause_time=6)
	SIPApplication.voice_audio_bridge.add(IncomingCallInitializer.tone_ringtone)
	IncomingCallInitializer.tone_ringtone.start()
	self.session.send_ring_indication()

	# ask question
	identity = str(self.session.remote_identity.uri)
	if self.session.remote_identity.display_name:
	identity = '"%s" <%s>' % (self.session.remote_identity.display_name, identity)
	streams = '/'.join(stream.type for stream in self.session.proposed_streams)
	self.question = Question("Incoming %s from %s, do you want to accept? (a)ccept/(r)eject/(b)usy" % (streams, identity), 'arbi', bold=True)
	notification_center.add_observer(self, sender=self.question)
	ui = UI()
	ui.add_question(self.question)

	def handle_notification(self, notification):
	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def _NH_UIQuestionGotAnswer(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	notification_center.remove_observer(self, sender=notification.sender)
	answer = notification.data.answer
	self.question = None
	if answer == 'a':
	self.session.accept(self.session.proposed_streams)
	ui.status = 'Accepting...'
	elif answer == 'r':
	self.session.reject()
	ui.status = 'Rejecting...'
	elif answer == 'b':
	self.session.reject(486)
	ui.status = 'Sending Busy Here...'

	if self.wave_ringtone:
	self.wave_ringtone.stop()
	self.wave_ringtone = None
	if IncomingCallInitializer.sessions > 1:
	if IncomingCallInitializer.tone_ringtone is None:
	IncomingCallInitializer.tone_ringtone = WavePlayer(SIPApplication.voice_audio_mixer, ResourcePath('sounds/ring_tone.wav').normalized, loop_count=0, pause_time=6)
	SIPApplication.voice_audio_bridge.add(IncomingCallInitializer.tone_ringtone)
	IncomingCallInitializer.tone_ringtone.start()
	elif IncomingCallInitializer.tone_ringtone:
	IncomingCallInitializer.tone_ringtone.stop()
	IncomingCallInitializer.tone_ringtone = None
	if self.answer_timer is not None and self.answer_timer.active():
	self.answer_timer.cancel()

	def _NH_SIPSessionWillStart(self, notification):
	ui = UI()
	if self.question is not None:
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=self.question)
	ui.remove_question(self.question)
	self.question = None
	ui.status = 'Connecting...'

	def _NH_SIPSessionDidStart(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)
	IncomingCallInitializer.sessions -= 1

	ui = UI()
	ui.status = 'Connected'
	reactor.callLater(2, setattr, ui, 'status', None)

	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice("SIP session with %s established" % identity)

	for stream in notification.data.streams:
	if stream.type in ('audio', 'video'):
	show_notice('%s stream using %s codec at %sHz' % (stream.type.title(), stream.codec.capitalize(), stream.sample_rate))

	if stream.ice_active:
	show_notice('%s RTP endpoints %s:%d (ICE type %s) <-> %s:%d (ICE type %s)\n' % (stream.type.title(), stream.local_rtp_address,
	stream.local_rtp_port,
	stream.local_rtp_candidate.type.lower(),
	stream.remote_rtp_address,
	stream.remote_rtp_port,
	stream.remote_rtp_candidate.type.lower()))
	else:
	show_notice('%s RTP endpoints %s:%d <-> %s:%d\n' % (stream.type.title(),
	stream.local_rtp_address,
	stream.local_rtp_port,
	stream.remote_rtp_address,
	stream.remote_rtp_port))

	if stream.encryption.active:
	show_notice('%s RTP stream is encrypted using %s (%s)\n' % (stream.type.title(), stream.encryption.type, stream.encryption.cipher))
	if session.remote_user_agent is not None:
	show_notice('Remote SIP User Agent is "%s"' % session.remote_user_agent)

	def _NH_SIPSessionDidFail(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)

	ui.status = None

	if self.question is not None:
	notification_center.remove_observer(self, sender=self.question)
	ui.remove_question(self.question)
	self.question = None

	IncomingCallInitializer.sessions -= 1
	if self.wave_ringtone:
	self.wave_ringtone.stop()
	self.wave_ringtone = None
	if IncomingCallInitializer.sessions == 0 and IncomingCallInitializer.tone_ringtone is not None:
	IncomingCallInitializer.tone_ringtone.stop()
	IncomingCallInitializer.tone_ringtone = None
	if notification.data.failure_reason == 'user request' and notification.data.code == 487:
	show_notice('SIP session cancelled by user')
	if notification.data.failure_reason == 'Call completed elsewhere' and notification.data.code == 487:
	show_notice('SIP session cancelled, call was answered elsewhere')
	elif notification.data.failure_reason == 'user request':
	show_notice('SIP session rejected (%d %s)' % (notification.data.code, notification.data.reason))
	else:
	show_notice('SIP session failed: %s' % notification.data.failure_reason)


	@implementer(IObserver)
	class OutgoingProposalHandler(object):

	def __init__(self, session, audio=False, chat=False):
	self.session = session
	self.stream = None
	if audio:
	self.stream = MediaStreamRegistry.AudioStream()
	if chat:
	self.stream = MediaStreamRegistry.ChatStream()
	if not self.stream:
	raise ValueError("Need to specify exactly one stream")

	def start(self):
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=self.session)
	try:
	self.session.add_stream(self.stream)
	except IllegalStateError:
	notification_center.remove_observer(self, sender=self.session)
	raise

	remote_identity = str(self.session.remote_identity.uri)
	if self.session.remote_identity.display_name:
	remote_identity = '"%s" <%s>' % (self.session.remote_identity.display_name, remote_identity)
	show_notice("Proposing %s to '%s'..." % (self.stream.type, remote_identity))

	def handle_notification(self, notification):
	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def _NH_SIPSessionProposalAccepted(self, notification):
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=self.session)
	application = SIPSessionApplication()
	application.sessions_with_proposals.remove(notification.sender)
	show_notice('Proposal accepted')

	def _NH_SIPSessionProposalRejected(self, notification):
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=self.session)
	application = SIPSessionApplication()
	application.sessions_with_proposals.remove(notification.sender)

	ui = UI()
	ui.status = None
	if notification.data.code == 487:
	show_notice('Proposal cancelled (%d %s)' % (notification.data.code, notification.data.reason))
	else:
	show_notice('Proposal rejected (%d %s)' % (notification.data.code, notification.data.reason))

	def _NH_SIPSessionDidEnd(self, notification):
	notification_center = NotificationCenter()
	notification_center.discard_observer(self, sender=self.session)


	@implementer(IObserver)
	class IncomingProposalHandler(object):

	sessions = 0
	tone_ringtone = None

	def __init__(self, session):
	self.session = session
	self.question = None

	def start(self):
	IncomingProposalHandler.sessions += 1
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=self.session)

	# start ringing
	if IncomingProposalHandler.tone_ringtone is None:
	IncomingProposalHandler.tone_ringtone = WavePlayer(SIPApplication.voice_audio_mixer, ResourcePath('sounds/ring_tone.wav').normalized, loop_count=0, pause_time=6)
	SIPApplication.voice_audio_bridge.add(IncomingProposalHandler.tone_ringtone)
	IncomingProposalHandler.tone_ringtone.start()
	self.session.send_ring_indication()

	# ask question
	identity = str(self.session.remote_identity.uri)
	if self.session.remote_identity.display_name:
	identity = '"%s" <%s>' % (self.session.remote_identity.display_name, identity)
	streams = ', '.join(stream.type for stream in self.session.proposed_streams)
	self.question = Question("'%s' wants to add %s, do you want to accept? (a)ccept/(r)eject" % (identity, streams), 'ar', bold=True)
	notification_center.add_observer(self, sender=self.question)
	ui = UI()
	ui.add_question(self.question)

	def handle_notification(self, notification):
	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def _NH_UIQuestionGotAnswer(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	notification_center.remove_observer(self, sender=notification.sender)
	answer = notification.data.answer
	self.question = None
	if answer == 'a':
	self.session.accept_proposal(self.session.proposed_streams)
	ui.status = 'Accepting proposal...'
	elif answer == 'r':
	self.session.reject_proposal()
	ui.status = 'Rejecting proposal...'

	if IncomingProposalHandler.sessions == 1 and IncomingProposalHandler.tone_ringtone:
	IncomingProposalHandler.tone_ringtone.stop()
	IncomingProposalHandler.tone_ringtone = None

	def _NH_SIPSessionProposalAccepted(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)
	application = SIPSessionApplication()
	application.sessions_with_proposals.remove(notification.sender)
	IncomingProposalHandler.sessions -= 1

	ui = UI()
	ui.status = None
	show_notice('Proposal accepted')

	def _NH_SIPSessionProposalRejected(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)
	application = SIPSessionApplication()
	application.sessions_with_proposals.remove(notification.sender)
	IncomingProposalHandler.sessions -= 1

	ui = UI()
	ui.status = None
	if notification.data.code == 487:
	show_notice('Proposal cancelled (%d %s)' % (notification.data.code, notification.data.reason))
	else:
	show_notice('Proposal rejected (%d %s)' % (notification.data.code, notification.data.reason))

	if IncomingProposalHandler.tone_ringtone:
	IncomingProposalHandler.tone_ringtone.stop()
	IncomingProposalHandler.tone_ringtone = None

	if self.question is not None:
	notification_center.remove_observer(self, sender=self.question)
	ui.remove_question(self.question)
	self.question = None

	def _NH_SIPSessionHadProposalFailure(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	notification_center.remove_observer(self, sender=session)
	IncomingProposalHandler.sessions -= 1

	ui = UI()
	ui.status = None
	show_notice('Proposal failed (%s)' % notification.data.failure_reason)

	def _NH_SIPSessionDidEnd(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	session = notification.sender
	notification_center.discard_observer(self, sender=session)

	ui.status = None

	if self.question is not None:
	notification_center.remove_observer(self, sender=self.question)
	ui.remove_question(self.question)
	self.question = None

	IncomingProposalHandler.sessions -= 1
	if IncomingProposalHandler.sessions == 0 and IncomingProposalHandler.tone_ringtone is not None:
	IncomingProposalHandler.tone_ringtone.stop()
	IncomingProposalHandler.tone_ringtone = None


	@implementer(IObserver)
	class OutgoingTransferHandler(object):

	def __init__(self, account, target, filepath):
	self.account = account
	self.target = target
	self.filepath = filepath
	self.file_selector = None
	self.hash_compute_proc = None
	self.session = None
	self.stream = None
	self.handler = None
	self.wave_ringtone = None

	@run_in_green_thread
	def start(self):
	if isinstance(self.account, BonjourAccount) and '@' not in self.target:
	show_notice('Bonjour mode requires a host in the destination address')
	return
	if '@' not in self.target:
	self.target = '%s@%s' % (self.target, self.account.id.domain)
	if not self.target.startswith('sip:') and not self.target.startswith('sips:'):
	self.target = 'sip:' + self.target
	try:
	self.target = SIPURI.parse(self.target)
	except SIPCoreError:
	show_notice('Illegal SIP URI: %s' % self.target)
	return

	show_notice('Preparing transfer...')
	self.file_selector = FileSelector.for_file(self.filepath)
	if '.' not in self.target.host.decode() and not isinstance(self.account, BonjourAccount):
	self.target.host = '%s.%s' % (self.target.host, self.account.id.domain)
	lookup = DNSLookup()
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=lookup)
	settings = SIPSimpleSettings()
	if isinstance(self.account, Account) and self.account.sip.outbound_proxy is not None:
	uri = SIPURI(host=self.account.sip.outbound_proxy.host, port=self.account.sip.outbound_proxy.port, parameters={'transport': self.account.sip.outbound_proxy.transport})
	elif isinstance(self.account, Account) and self.account.sip.always_use_my_proxy:
	uri = SIPURI(host=self.account.id.domain)
	else:
	uri = self.target
	lookup.lookup_sip_proxy(uri, settings.sip.transport_list, tls_name=self.account.sip.tls_name if self.account is not BonjourAccount() else None)

	def _terminate(self, failure_reason=None):
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=self.session)
	notification_center.remove_observer(self, sender=self.stream)
	notification_center.remove_observer(self, sender=self.handler)

	ui = UI()
	ui.status = None

	if self.wave_ringtone:
	self.wave_ringtone.stop()
	self.wave_ringtone = None

	if failure_reason is None:
	show_notice('File transfer of %s succeeded' % self.filepath)
	else:
	show_notice('File transfer of %s failed: %s' % (self.filepath, failure_reason))

	self.session = None
	self.stream = None
	self.handler = None

	def handle_notification(self, notification):
	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def _NH_DNSLookupDidSucceed(self, notification):
	notification.center.remove_observer(self, sender=notification.sender)
	self.session = Session(self.account)
	self.stream = MediaStreamRegistry.FileTransferStream(self.file_selector, 'sendonly')
	self.handler = self.stream.handler
	notification.center.add_observer(self, sender=self.session)
	notification.center.add_observer(self, sender=self.stream)
	notification.center.add_observer(self, sender=self.handler)
	routes = notification.data.result
	self.session.connect(ToHeader(self.target), routes=routes, streams=[self.stream])

	def _NH_DNSLookupDidFail(self, notification):
	notification.center.remove_observer(self, sender=notification.sender)
	show_notice('File transfer to %s failed: DNS lookup error: %s' % (self.target, notification.data.error))

	def _NH_SIPSessionNewOutgoing(self, notification):
	session = notification.sender
	local_identity = str(session.local_identity.uri)
	if session.local_identity.display_name:
	local_identity = '"%s" <%s>' % (session.local_identity.display_name, local_identity)
	remote_identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	remote_identity = '"%s" <%s>' % (session.remote_identity.display_name, remote_identity)
	show_notice("Initiating file transfer from '%s' to '%s' via %s..." % (local_identity, remote_identity, session.route))

	def _NH_SIPSessionGotRingIndication(self, notification):
	settings = SIPSimpleSettings()
	ui = UI()
	ringtone = settings.sounds.audio_outbound
	if ringtone and self.wave_ringtone is None:
	self.wave_ringtone = WavePlayer(SIPApplication.voice_audio_mixer, ringtone.path.normalized, volume=ringtone.volume, loop_count=0, pause_time=2)
	SIPApplication.voice_audio_bridge.add(self.wave_ringtone)
	self.wave_ringtone.start()
	ui.status = 'Ringing...'

	def _NH_SIPSessionWillStart(self, notification):
	ui = UI()
	if self.wave_ringtone:
	self.wave_ringtone.stop()
	ui.status = 'Connecting...'

	def _NH_SIPSessionDidStart(self, notification):
	session = notification.sender

	ui = UI()
	ui.status = 'File transfer connected'

	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice("File transfer for %s to '%s' started" % (os.path.basename(self.filepath), identity))

	def _NH_FileTransferHandlerHashProgress(self, notification):
	progress = int(notification.data.processed*100/notification.data.total)
	if progress % 10 == 0:
	ui = UI()
	if progress < 100:
	ui.status = 'Calculating checksum for %s: %s%%' % (self.filepath, progress)
	else:
	ui.status = 'Sending file transfer request...'

	def _NH_MediaStreamDidNotInitialize(self, notification):
	self._terminate(failure_reason=notification.data.reason)

	def _NH_FileTransferHandlerDidEnd(self, notification):
	self.session.end()
	self._terminate(failure_reason=notification.data.reason)


	@implementer(IObserver)
	class IncomingTransferHandler(object):

	sessions = 0
	tone_ringtone = None

	def __init__(self, session, auto_answer_interval=None):
	self.session = session
	self.stream = None
	self.handler = None
	self.auto_answer_interval = auto_answer_interval
	self.file = None
	self.filename = None
	self.finished = False
	self.hash = None
	self.question = None
	self.wave_ringtone = None

	def start(self):
	self.stream = self.session.proposed_streams[0]
	self.handler = self.stream.handler
	self.file_selector = self.stream.file_selector
	self.filename = self.file_selector.name

	IncomingTransferHandler.sessions += 1
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=self.session)
	notification_center.add_observer(self, sender=self.stream)
	notification_center.add_observer(self, sender=self.handler)

	# start auto-answer
	self.answer_timer = None
	if self.auto_answer_interval == 0:
	self.session.accept(self.session.proposed_streams)
	return
	elif (self.auto_answer_interval and self.auto_answer_interval > 0):
	self.answer_timer = reactor.callFromThread(reactor.callLater, self.auto_answer_interval, self.session.accept, self.session.proposed_streams)

	# start ringing
	application = SIPSessionApplication()
	if application.active_session is None:
	if IncomingTransferHandler.sessions == 1:
	ringtone = self.session.account.sounds.audio_inbound.sound_file if self.session.account.sounds.audio_inbound is not None else None
	if ringtone:
	self.wave_ringtone = WavePlayer(SIPApplication.alert_audio_mixer, ringtone.path.normalized, volume=ringtone.volume, loop_count=0, pause_time=2)
	SIPApplication.alert_audio_bridge.add(self.wave_ringtone)
	self.wave_ringtone.start()
	elif IncomingTransferHandler.tone_ringtone is None:
	IncomingTransferHandler.tone_ringtone = WavePlayer(SIPApplication.voice_audio_mixer, ResourcePath('sounds/ring_tone.wav').normalized, loop_count=0, pause_time=6)
	SIPApplication.voice_audio_bridge.add(IncomingTransferHandler.tone_ringtone)
	IncomingTransferHandler.tone_ringtone.start()
	self.session.send_ring_indication()

	# ask question
	identity = str(self.session.remote_identity.uri)
	if self.session.remote_identity.display_name:
	identity = '"%s" <%s>' % (self.session.remote_identity.display_name, identity)
	self.question = Question("Incoming file transfer for %s from '%s', do you want to accept? (a)ccept/(r)eject" % (os.path.basename(self.filename), identity), 'ari', bold=True)
	notification_center.add_observer(self, sender=self.question)
	ui = UI()
	ui.add_question(self.question)

	def _terminate(self, failure_reason=None):
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=self.session)
	notification_center.remove_observer(self, sender=self.stream)
	notification_center.remove_observer(self, sender=self.handler)

	ui = UI()
	ui.status = None

	if self.question is not None:
	notification_center.remove_observer(self, sender=self.question)
	ui.remove_question(self.question)
	self.question = None

	if self.wave_ringtone:
	self.wave_ringtone.stop()

	if failure_reason is None:
	show_notice('File saved to %s' % self.filename)
	else:
	show_notice('File transfer of %s failed: %s' % (self.filename, failure_reason))

	self.session = None
	self.stream = None
	self.handler = None

	def handle_notification(self, notification):
	handler = getattr(self, '_NH_%s' % notification.name, Null)
	handler(notification)

	def _NH_UIQuestionGotAnswer(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	notification_center.remove_observer(self, sender=notification.sender)
	answer = notification.data.answer
	self.question = None
	if answer == 'a':
	self.session.accept(self.session.proposed_streams)
	ui.status = 'Accepting...'
	elif answer == 'r':
	self.session.reject()
	ui.status = 'Rejecting...'

	if IncomingTransferHandler.sessions == 1:
	if self.wave_ringtone:
	self.wave_ringtone.stop()
	self.wave_ringtone = None
	if IncomingTransferHandler.tone_ringtone:
	IncomingTransferHandler.tone_ringtone.stop()
	IncomingTransferHandler.tone_ringtone = None
	if self.answer_timer is not None and self.answer_timer.active():
	self.answer_timer.cancel()

	def _NH_SIPSessionWillStart(self, notification):
	ui = UI()
	if self.question is not None:
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=self.question)
	ui.remove_question(self.question)
	self.question = None
	ui.status = 'Connecting...'

	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=notification.sender.proposed_streams[0])

	def _NH_SIPSessionDidStart(self, notification):
	session = notification.sender
	IncomingCallInitializer.sessions -= 1

	ui = UI()
	ui.status = 'File transfer connected'

	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice("File transfer for %s with %s started" % (os.path.basename(self.filename), identity))

	if IncomingTransferHandler.sessions == 1:
	if self.wave_ringtone:
	self.wave_ringtone.stop()
	self.wave_ringtone = None
	if IncomingTransferHandler.tone_ringtone:
	IncomingTransferHandler.tone_ringtone.stop()
	IncomingTransferHandler.tone_ringtone = None

	def _NH_SIPSessionDidFail(self, notification):
	IncomingTransferHandler.sessions -= 1
	if self.wave_ringtone:
	self.wave_ringtone.stop()
	self.wave_ringtone = None
	if IncomingTransferHandler.sessions == 0 and IncomingTransferHandler.tone_ringtone is not None:
	IncomingTransferHandler.tone_ringtone.stop()
	IncomingTransferHandler.tone_ringtone = None

	def _NH_MediaStreamDidNotInitialize(self, notification):
	self._terminate(failure_reason=notification.data.reason)

	def _NH_FileTransferHandlerDidInitialize(self, notification):
	self.filename = self.stream.file_selector.name

	def _NH_FileTransferHandlerProgress(self, notification):
	ui = UI()
	ui.status = '%s: %s%%' % (os.path.basename(self.filename), notification.data.transferred_bytes*100//notification.data.total_bytes)

	def _NH_FileTransferHandlerDidEnd(self, notification):
	reactor.callFromThread(reactor.callLater, 0, self.session.end)
	self._terminate(failure_reason=notification.data.reason)



	class SIPSessionApplication(SIPApplication):
	# public methods
	#

	def __init__(self):
	self.account = None
	self.options = None
	self.target = None
	self.filepath = None
	self.enable_video = False

	self.active_session = None
	self.message_session_to = None
	self.outgoing_session = None
	self.connected_sessions = []
	self.sessions_with_proposals = set()
	self.hangup_timers = {}
	self.neighbours = {}
	self.registration_succeeded = {}
	self.stopped_event = Event()
	self.received_message_ids = set()

	self.message_sessions = set()

	self.ip_address_monitor = IPAddressMonitor()
	self.logger = None
	self.rtp_statistics = None

	self.hold_tone = None

	self.ignore_local_hold = False
	self.ignore_local_unhold = False

	self.smp_verification_question = 'What is the ZRTP authentication string?'
	self.smp_verifified_using_zrtp = False
	self.smp_verification_delay = 0
	self.smp_verification_tries = 5
	self.smp_secret = None
	self.must_exit = False
	self.last_failure_reason = None

	def start(self, target, options, filepath=None):
	notification_center = NotificationCenter()

	ui = UI()

	history_file = os.path.join(config_directory, 'input.history')
	ui.input.add_history(history_file)

	self.options = options
	self.target = target
	self.filepath = filepath
	self.logger = Logger(sip_to_stdout=options.trace_sip,
	msrp_to_stdout=options.trace_msrp,
	pjsip_to_stdout=options.trace_pjsip,
	notifications_to_stdout=options.trace_notifications)

	notification_center.add_observer(self, sender=self)
	notification_center.add_observer(self, sender=ui)
	notification_center.add_observer(self, name='SIPSessionNewIncoming')
	notification_center.add_observer(self, name='SIPSessionNewOutgoing')
	notification_center.add_observer(self, name='RTPStreamDidChangeRTPParameters')
	notification_center.add_observer(self, name='RTPStreamICENegotiationDidSucceed')
	notification_center.add_observer(self, name='RTPStreamICENegotiationDidFail')
	notification_center.add_observer(self, name='SIPEngineGotMessage')
	notification_center.add_observer(self, name='SIPSessionDidEnd')
	notification_center.add_observer(self, name='SIPSessionDidFail')
	notification_center.add_observer(self, name='MediaStreamDidNotInitialize')
	notification_center.add_observer(self, name='SIPSessionGotConferenceInfo')
	notification_center.add_observer(self, name='SIPSessionTransferGotProgress')
	notification_center.add_observer(self, name='SIPSessionTransferDidFail')
	notification_center.add_observer(self, name='SIPSessionTransferNewIncoming')
	notification_center.add_observer(self, name='RTPStreamICENegotiationStateDidChange')
	notification_center.add_observer(self, name='RTPStreamICENegotiationDidFail')
	notification_center.add_observer(self, name='RTPStreamICENegotiationDidSucceed')
	notification_center.add_observer(self, name='ChatStreamOTREncryptionStateChanged')


	log.level.current = log.level.WARNING # get rid of twisted messages
	control_bindings={'s': 'trace sip',
	'm': 'trace msrp',
	'j': 'trace pjsip',
	'n': 'trace notifications',
	'h': 'hangup',
	'r': 'record',
	'c': 'camera',
	'i': 'input',
	'o': 'output',
	'a': 'alert',
	'u': 'mute',
	' ': 'hold',
	'q': 'quit',
	'/': 'help',
	'?': 'help',
	'0': 'dtmf 0',
	'1': 'dtmf 1',
	'2': 'dtmf 2',
	'3': 'dtmf 3',
	'4': 'dtmf 4',
	'5': 'dtmf 5',
	'6': 'dtmf 6',
	'7': 'dtmf 7',
	'8': 'dtmf 8',
	'9': 'dtmf 9',
	'': 'dtmf ',
	'#': 'dtmf #',
	'A': 'dtmf A',
	'B': 'dtmf B',
	'C': 'dtmf C',
	'D': 'dtmf D'}
	ui.start(control_bindings=control_bindings, display_text=False)

	Account.register_extension(AccountExtension)
	BonjourAccount.register_extension(AccountExtension)
	SIPSimpleSettings.register_extension(SIPSimpleSettingsExtension)

	try:
	SIPApplication.start(self, FileStorage(options.config_directory or config_directory))
	except ConfigurationError as e:
	show_notice("Failed to load sipclient's configuration: %s\n" % str(e), bold=False)
	show_notice("If an old configuration file is in place, delete it or move it and recreate the configuration using the sip_settings script.", bold=False)
	ui.stop()
	self.stopped_event.set()
	else:
	show_notice("SDK version %s, core version %s, PJSIP version %s (%s)" % (version, CORE_REVISION, PJ_VERSION.decode(), PJ_SVN_REVISION))

	# notification handlers
	#

	def _NH_SIPApplicationWillStart(self, notification):
	account_manager = AccountManager()
	notification_center = NotificationCenter()
	settings = SIPSimpleSettings()
	ui = UI()

	for account in account_manager.iter_accounts():
	if isinstance(account, Account):
	account.sip.register = False
	account.presence.enabled = False
	account.xcap.enabled = False
	account.message_summary.enabled = False

	notification_center.add_observer(self, sender=account)

	if self.options.account is None:
	self.account = account_manager.default_account
	else:
	possible_accounts = [account for account in account_manager.iter_accounts() if self.options.account in account.id and account.enabled]
	if len(possible_accounts) > 1:
	show_notice('More than one account exists which matches %s: %s' % (self.options.account, ', '.join(sorted(account.id for account in possible_accounts))), bold=False)
	self.stop()
	return
	elif len(possible_accounts) == 0:
	show_notice('No enabled account which matches %s was found. Available and enabled accounts: %s' % (self.options.account, ', '.join(sorted(account.id for account in account_manager.get_accounts() if account.enabled))), bold=False)
	self.stop()
	return
	else:
	self.account = possible_accounts[0]

	if isinstance(self.account, Account):
	self.account.sip.register = True

	show_notice('Using account %s' % self.account.id, bold=False)
	ui.prompt = Prompt(self.account.id, foreground='default')

	self.logger.start()
	if settings.logs.trace_sip and self.logger._siptrace_filename is not None:
	show_notice('Logging SIP trace to file "%s"' % self.logger._siptrace_filename, bold=False)
	if settings.logs.trace_msrp and self.logger._msrptrace_filename is not None:
	show_notice('Logging MSRP trace to file "%s"' % self.logger._msrptrace_filename, bold=False)
	if settings.logs.trace_pjsip and self.logger._pjsiptrace_filename is not None:
	show_notice('Logging PJSIP trace to file "%s"' % self.logger._pjsiptrace_filename, bold=False)
	if settings.logs.trace_notifications and self.logger._notifications_filename is not None:
	show_notice('Logging notifications trace to file "%s"' % self.logger._notifications_filename, bold=False)

	if self.options.disable_sound:
	settings.audio.input_device = None
	settings.audio.output_device = None
	settings.audio.alert_device = None

	def _NH_SIPApplicationDidStart(self, notification):
	settings = SIPSimpleSettings()
	engine = Engine()
	show_notice('Available audio codecs: %s\n' % ', '.join([codec.decode() for codec in engine._ua.available_codecs]))
	show_notice('Available video codecs: %s\n' % ', '.join([codec.decode() for codec in engine._ua.available_video_codecs]))

	self.ip_address_monitor.start()

	# set the file transfer directory if it's not set
	if settings.file_transfer.directory is None:
	settings.file_transfer.directory = 'file_transfers'

	# display a list of available devices
	self._CH_devices()

	show_notice('Type /help to see a list of available commands.', bold=False)

	if settings.tls.ca_list is None:
	show_notice('Initializing default TLS certificates and settings')
	copy_default_certificates()
	settings.tls.ca_list = os.path.join(config_directory, 'tls/ca.crt')
	settings.tls.verify_server = True
	settings.save()

	if isinstance(self.account, Account):
	self.account.tls.ca_list = os.path.join(config_directory, 'tls/ca.crt')
	self.account.tls.verify_server = True
	self.account.save()

	if self.account.tls.certificate is None and isinstance(self.account, BonjourAccount):
	self.account.tls.certificate = os.path.join(config_directory, 'tls/default.crt')
	self.account.save()

	if self.target is not None:
	if self.filepath:
	self.send_outgoing_file(self.target, self.filepath)
	self.must_exit = True
	else:
	call_initializer = OutgoingCallInitializer(self.account, self.target, audio=True, chat=True, video=True)
	call_initializer.start()

	def _NH_SIPApplicationWillEnd(self, notification):
	show_notice('Application will end')
	self.ip_address_monitor.stop()

	def _NH_SIPApplicationDidEnd(self, notification):
	ui = UI()
	ui.stop()
	self.stopped_event.set()

	def _NH_SIPEngineDetectedNATType(self, notification):
	SIPApplication._NH_SIPEngineDetectedNATType(self, notification)
	if notification.data.succeeded:
	show_notice('Detected NAT type: %s' % notification.data.nat_type)

	def _NH_UIInputGotCommand(self, notification):
	handler = getattr(self, '_CH_%s' % notification.data.command, None)
	if handler is not None:
	try:
	handler(*notification.data.args)
	except TypeError:
	show_notice('Illegal use of command /%s. Type /help for a list of available commands.' % notification.data.command)
	else:
	show_notice('Unknown command /%s. Type /help for a list of available commands.' % notification.data.command)

	def _NH_RTPStreamICENegotiationStateDidChange(self, notification):
	data = notification.data
	stype = notification.sender.type.title()
	if data.state == 'GATHERING':
	show_notice("Gathering %s ICE Candidates..." % stype)
	elif data.state == 'NEGOTIATION_START':
	show_notice("Probing remote %s ICE candidates..." % stype)
	elif data.state == 'NEGOTIATING':
	show_notice("%s ICE negotiating in progress..." % stype)
	elif data.state == 'GATHERING_COMPLETE':
	show_notice("%s ICE candidates gathering complete" % stype)
	elif data.state == 'RUNNING':
	show_notice("%s ICE negotiation succeeded" % stype)
	elif data.state == 'FAILED':
	show_notice("%s ICE negotiation failed" % stype, True)

	def _NH_RTPStreamICENegotiationDidFail(self, notification):
	stream = notification.sender
	show_notice('%s ICE negotiation failed: %s' % (notification.sender.type, notification.data.reason))

	def _NH_RTPStreamICENegotiationDidSucceed(self, notification):
	stream = notification.sender
	show_notice('%s ICE negotiation succeeded' % stream.type)
	show_notice('%s RTP endpoints: %s:%d (%s) <-> %s:%d (%s)' % (stream.type, stream.local_rtp_address,
	stream.local_rtp_port,
	self.stream.local_rtp_candidate.type.lower(),
	stream.remote_rtp_address,
	stream.remote_rtp_port,
	stream.remote_rtp_candidate.type.lower()))

	if stream.local_rtp_candidate.type.lower() != 'relay' and stream.remote_rtp_candidate.type.lower() != 'relay':
	show_notice('%s stream is peer to peer' % stream.type)
	else:
	show_notice('%s stream is relayed by server' % stream.type)


	def _NH_UIInputGotText(self, notification):
	msrp_chat = None
	message_text = notification.data.text
	local_identity = '%s@%s' % (self.account.id.username, self.account.id.domain)
	encrypted = False

	if self.active_session is not None:
	msrp_chat = next((stream for stream in self.active_session.streams if stream.type == 'chat'), None)

	if msrp_chat:
	msrp_chat.send_message(message_text)

	if msrp_chat.local_identity.display_name:
	local_identity = msrp_chat.local_identity.display_name
	else:
	local_identity = str(msrp_chat.local_identity.uri)
	else:
	# compose SMS message
	pass

	elif self.message_session_to:
	# compose SMS message
	message_session = self.message_session(self.message_session_to)
	msg_id = message_session.send_message(message_text)
	message_text = message_text + ' (%s)' % msg_id

	if message_session.encryption.active:
	local_identity = '%s encrypted text sent to %s' % (local_identity, self.message_session_to)
	else:
	local_identity = '%s clear text sent to %s' % (local_identity, self.message_session_to)

	else:
	show_notice('No active chat or message session')
	return

	ui = UI()
	ui.write(RichText('%s> ' % local_identity, foreground='darkred') + message_text)

	def message_session(self, recipient, account=None, route=None):
	account = account or self.account
	try:
	message_session = next((session for session in self.message_sessions if session.target == recipient and account == session.account))
	except StopIteration:
	message_session = MessageSession(account, recipient, route)
	self.message_sessions.add(message_session)

	return message_session

	def _NH_SIPSessionTransferNewIncoming(self, notification):
	target = "%s@%s" % (notification.data.transfer_destination.user.decode(), notification.data.transfer_destination.host.decode())
	show_notice('Session transfer requested by remote party to: %s' % target)
	self.question = Question("Call transfer request to %s, do you want to accept? (a)ccept/(r)eject" % target, 'arbi', bold=True)
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=self.question)
	ui = UI()
	ui.add_question(self.question)

	def _NH_UIQuestionGotAnswer(self, notification):
	notification_center = NotificationCenter()
	ui = UI()
	notification_center.remove_observer(self, sender=notification.sender)
	answer = notification.data.answer
	self.question = None
	if answer == 'a':
	if self.active_session:
	ui.status = 'Accepting transfer...'
	self.active_session.accept_transfer()
	elif answer == 'r':
	if self.active_session:
	ui.status = 'Rejecting transfer...'
	self.active_session.accept_transfer()

	def _NH_SIPEngineGotException(self, notification):
	lines = ['An exception occured within the SIP core:']
	lines.extend(notification.data.traceback.split('\n'))
	show_notice(lines)

	def _NH_SIPAccountRegistrationDidSucceed(self, notification):
	account = notification.sender

	try:
	s = self.registration_succeeded[account.id]
	except KeyError:
	pass
	else:
	if s and notification.data.expires == 0:
	show_notice('%s Registration ended for %s' % (datetime.now().replace(microsecond=0), notification.sender.id))
	return

	contact_header = notification.data.contact_header
	contact_header_list = notification.data.contact_header_list
	expires = notification.data.expires
	registrar = notification.data.registrar
	now = datetime.now().replace(microsecond=0)
	lines = ['%s Registered contact "%s" of %s at %s:%d;transport=%s for %d seconds' % (now, contact_header.uri, account.id, registrar.address, registrar.port, registrar.transport, expires)]
	if len(contact_header_list) > 1:
	lines.append('%s Other registered contacts of %s:' % (now, account.id))
	lines.extend('%s %s of %s for %s seconds' % (now, str(other_contact_header.uri), account.id, other_contact_header.expires) for other_contact_header in contact_header_list if other_contact_header.uri != notification.data.contact_header.uri)

	if account.contact.public_gruu is not None:
	lines.append('%s Public GRUU: %s' % (now, account.contact.public_gruu))

	if account.contact.temporary_gruu is not None:
	lines.append('%s Temporary GRUU: %s' % (now, account.contact.temporary_gruu))

	show_notice(lines)

	self.registration_succeeded[account.id] = True

	def _NH_SIPAccountRegistrationDidFail(self, notification):
	account = notification.sender
	if notification.data.error == self.last_failure_reason:
	return

	self.last_failure_reason = notification.data.error
	if self.active_session is None:
	show_notice('%s Failed to register contact for %s: %s (retrying in %.2f seconds)' % (datetime.now().replace(microsecond=0), account.id, notification.data.error, notification.data.retry_after))
	self.registration_succeeded[notification.sender.id] = False

	def _NH_SIPAccountRegistrationDidEnd(self, notification):
	account = notification.sender
	show_notice('%s Registration ended for %s' % (datetime.now().replace(microsecond=0), account.id))

	def _NH_BonjourAccountRegistrationDidSucceed(self, notification):
	show_notice('%s Registered Bonjour contact %s' % (datetime.now().replace(microsecond=0), notification.data.name))

	def _NH_BonjourAccountRegistrationDidFail(self, notification):
	if notification.data.reason == self.last_failure_reason:
	return

	self.last_failure_reason = notification.data.reason
	show_notice('%s Failed to register Bonjour contact: %s' % (datetime.now().replace(microsecond=0), notification.data.reason))

	def _NH_BonjourAccountRegistrationDidEnd(self, notification):
	pass
	#show_notice('%s Bonjour registration ended for %s' % (datetime.now().replace(microsecond=0), notification.sender.id))

	def _NH_BonjourAccountDidAddNeighbour(self, notification):
	neighbour, record = notification.data.neighbour, notification.data.record
	now = datetime.now().replace(microsecond=0)
	#show_notice('%s Discovered Bonjour neighbour: "%s (%s)" <%s>' % (now, record.name, record.host, record.uri))
	self.neighbours[neighbour] = BonjourNeighbour(neighbour, record.uri, record.name, record.host)

	def _NH_BonjourAccountDidUpdateNeighbour(self, notification):
	neighbour, record = notification.data.neighbour, notification.data.record
	now = datetime.now().replace(microsecond=0)
	try:
	bonjour_neighbour = self.neighbours[neighbour]
	except KeyError:
	#show_notice('%s Discovered Bonjour neighbour: "%s (%s)" <%s>' % (now, record.name, record.host, record.uri))
	self.neighbours[neighbour] = BonjourNeighbour(neighbour, record.uri, record.name, record.host)
	else:
	#show_notice('%s Updated Bonjour neighbour: "%s (%s)" <%s>' % (now, record.name, record.host, record.uri))
	bonjour_neighbour.display_name = record.name
	bonjour_neighbour.host = record.host
	bonjour_neighbour.uri = record.uri

	def _NH_BonjourAccountDidRemoveNeighbour(self, notification):
	neighbour = notification.data.neighbour
	now = datetime.now().replace(microsecond=0)
	try:
	bonjour_neighbour = self.neighbours.pop(neighbour)
	except KeyError:
	pass
	else:
	pass
	#show_notice('%s Bonjour neighbour left: "%s (%s)" <%s>' % (now, bonjour_neighbour.display_name, bonjour_neighbour.host, bonjour_neighbour.uri))

	def _NH_SIPEngineGotMessage(self, notification):
	data = notification.data

	call_id = data.headers.get('Call-ID', Null).body

	try:
	self.received_message_ids.remove(call_id)
	except KeyError:
	self.received_message_ids.add(call_id)
	else:
	# drop duplicate message received
	return

	content_type = data.content_type

	if content_type not in ('text/plain', 'text/html', 'message/cpim', 'application/im-iscomposing+xml'):
	return

	account = AccountManager().find_account(data.request_uri)
	is_composing = False

	from_header = FromHeader.new(data.from_header)

	identity = '%s@%s' % (from_header.uri.user.decode(), from_header.uri.host.decode())
	if isinstance(account, BonjourAccount):
	via = data.headers.get('Via', Null)[0]
	route = Route(address=via.host, port=via.port, transport=via.transport.lower())
	else:
	route = None

	message_session = self.message_session(identity, account=account, route=route)

	parsed_payload = message_session.handle_incoming(data.from_header, content_type, data.body, call_id)

	if parsed_payload is None:
	return

	(content_type, content, identity, msg_id, encrypted) = parsed_payload
	if content_type == 'application/im-iscomposing+xml':
	# body must not be utf-8 decoded
	msg = IsComposingMessage.parse(content)
	state = msg.state.value
	refresh = msg.refresh.value if msg.refresh is not None else None
	content_type = msg.content_type.value if msg.content_type is not None else None
	last_active = msg.last_active.value if msg.last_active is not None else None
	sender_identity = data.from_header
	#show_notice('Is composing state=%s, refresh=%s, last_active=%s' % (state, refresh, last_active))

	if state == 'active':
	if refresh is None:
	refresh = 120

	if last_active is not None and (last_active - ISOTimestamp.now() > timedelta(seconds=refresh)):
	# message is old, discard it
	return
	elif state == 'idle':
	return

	is_composing = True

	if content_type != 'application/im-iscomposing+xml':
	self.message_session_to = identity

	if from_header.display_name:
	identity = '"%s" <%s>' % (from_header.display_name, identity)

	content = content.decode()

	if is_composing:
	ui = UI()
	ui.status = "%s is composing a message" % identity
	reactor.callLater(2, setattr, ui, 'status', None)
	else:
	if encrypted:
	show_notice("%s %s wrote: %s (%s encrypted)" % (datetime.now().replace(microsecond=0), identity, content, msg_id))
	else:
	show_notice("%s %s wrote: %s (%s)" % (datetime.now().replace(microsecond=0), identity, content, msg_id))

	if not encrypted and message_session.encryption.active and content_type != 'application/im-iscomposing+xml':
	show_notice("%s %s stopped the encryption" % (datetime.now().replace(microsecond=0), identity))
	message_session.encryption.stop()

	if content.startswith('?OTR:'):
	show_notice("%s %s encrypted message could not be read" % (datetime.now().replace(microsecond=0), identity))
	message_session.encryption.stop()

	def _NH_SIPSessionNewIncoming(self, notification):
	session = notification.sender
	transfer_streams = [stream for stream in session.proposed_streams if stream.type == 'file-transfer' and stream.direction == 'recvonly']
	# only allow sessions with 0 or 1 file transfers
	if transfer_streams:
	if len(transfer_streams) > 1:
	session.reject(488)
	return
	transfer_handler = IncomingTransferHandler(session, self.options.auto_answer_interval)
	transfer_handler.start()
	else:
	for stream in notification.data.streams:
	if stream.type in ('audio', 'chat'):
	break
	else:
	remote_identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	remote_identity = '"%s" <%s>' % (session.remote_identity.display_name, remote_identity)

	show_notice('Session from %s rejected due to incompatible media' % remote_identity)
	session.reject(415)
	return

	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=session)
	call_initializer = IncomingCallInitializer(session, self.options.auto_answer_interval)
	call_initializer.start()

	def _NH_SIPSessionNewOutgoing(self, notification):
	session = notification.sender
	transfer_streams = [stream for stream in session.proposed_streams if stream.type == 'file-transfer']
	if not transfer_streams:
	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=session)

	def _NH_SIPSessionDidFail(self, notification):
	notification_center = NotificationCenter()
	notification_center.discard_observer(self, sender=notification.sender)

	if self.must_exit:
	self.stop()

	def _NH_SIPSessionWillStart(self, notification):
	notification_center = NotificationCenter()
	for stream in notification.sender.proposed_streams:
	notification_center.add_observer(self, sender=stream)

	def _NH_SIPSessionDidStart(self, notification):
	session = notification.sender

	self.connected_sessions.append(session)
	if self.active_session is not None:
	self.active_session.hold()
	self.active_session = session
	self.message_session_to = None

	self._update_prompt()
	if len(self.connected_sessions) > 1:
	# this displays the conencted sessions
	self._CH_sessions()

	if self.options.auto_hangup_interval is not None:
	if self.options.auto_hangup_interval == 0:
	session.end()
	else:
	timer = reactor.callLater(self.options.auto_hangup_interval, session.end)
	self.hangup_timers[id(session)] = timer

	def _NH_SIPSessionWillEnd(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	if id(session) in self.hangup_timers:
	timer = self.hangup_timers[id(session)]
	if timer.active():
	timer.cancel()
	del self.hangup_timers[id(session)]

	hangup_tone = WavePlayer(self.voice_audio_mixer, ResourcePath('sounds/hangup_tone.wav').normalized)
	notification_center.add_observer(self, sender=hangup_tone)
	self.voice_audio_bridge.add(hangup_tone)
	hangup_tone.start()

	def _NH_SIPSessionDidEnd(self, notification):
	notification_center = NotificationCenter()
	session = notification.sender
	notification_center.discard_observer(self, sender=session)
	for stream in session.streams or session.proposed_streams or []:
	notification_center.remove_observer(self, sender=stream)

	ui = UI()
	ui.status = None

	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	if notification.data.end_reason == 'user request':
	show_notice('SIP session with %s ended by %s party' % (identity, notification.data.originator))
	else:
	show_notice('SIP session with %s ended due to error: %s' % (identity, notification.data.end_reason))
	if session.start_time:
	duration = session.end_time - session.start_time
	seconds = duration.seconds if duration.microseconds < 500000 else duration.seconds+1
	minutes, seconds = seconds / 60, seconds % 60
	hours, minutes = minutes / 60, minutes % 60
	hours += duration.days*24
	if not minutes and not hours:
	duration_text = '%d seconds' % seconds
	elif not hours:
	duration_text = '%02d:%02d' % (minutes, seconds)
	else:
	duration_text = '%02d:%02d:%02d' % (hours, minutes, seconds)
	else:
	duration_text = '0s'
	show_notice('Session duration was %s' % duration_text)

	if session in self.connected_sessions:
	self.connected_sessions.remove(session)
	if session is self.active_session:
	if self.connected_sessions:
	self.active_session = self.connected_sessions[0]
	self.message_session_to = None
	self.active_session.unhold()
	self.ignore_local_unhold = True
	identity = str(self.active_session.remote_identity.uri)
	if self.active_session.remote_identity.display_name:
	identity = '"%s" <%s>' % (self.active_session.remote_identity.display_name, identity)
	show_notice('Active SIP session: "%s" (%d/%d)' % (identity, self.connected_sessions.index(self.active_session)+1, len(self.connected_sessions)))
	else:
	self.active_session = None
	self._update_prompt()
	if session is self.outgoing_session:
	self.outgoing_session = None

	on_hold_streams = [stream for stream in chain(*(session.streams for session in self.connected_sessions)) if stream.on_hold]
	if not on_hold_streams and self.hold_tone is not None:
	self.hold_tone.stop()
	self.hold_tone = None

	if self.must_exit:
	self.stop()

	def _NH_SIPSessionDidChangeHoldState(self, notification):
	session = notification.sender
	if notification.data.on_hold:
	if notification.data.originator == 'remote':
	if session is self.active_session:
	show_notice('Remote party has put the session on hold')
	else:
	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice('%s has put the session on hold' % identity)
	elif not self.ignore_local_hold:
	if session is self.active_session:
	show_notice('Session was put on hold')
	else:
	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice('Session with %s was put on hold' % identity)
	else:
	self.ignore_local_hold = False
	if self.hold_tone is None:
	self.hold_tone = WavePlayer(self.voice_audio_mixer, ResourcePath('sounds/hold_tone.wav').normalized, loop_count=0, pause_time=30, volume=50)
	self.voice_audio_bridge.add(self.hold_tone)
	self.hold_tone.start()
	else:
	if notification.data.originator == 'remote':
	if session is self.active_session:
	show_notice('Remote party has taken the session out of hold')
	else:
	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice('%s has taken the session out of hold' % identity)
	elif not self.ignore_local_unhold:
	if session is self.active_session:
	show_notice('Session was taken out of hold')
	else:
	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	show_notice('Session with %s was taken out of hold' % identity)
	else:
	self.ignore_local_unhold = False
	on_hold_streams = [stream for stream in chain(*(session.streams for session in self.connected_sessions)) if stream.on_hold]
	if not on_hold_streams and self.hold_tone is not None:
	self.hold_tone.stop()
	self.hold_tone = None

	def _NH_SIPSessionNewProposal(self, notification):
	self.sessions_with_proposals.add(notification.sender)
	if notification.data.originator == 'remote':
	proposal_handler = IncomingProposalHandler(notification.sender)
	proposal_handler.start()

	def _NH_SIPSessionDidRenegotiateStreams(self, notification):
	notification_center = NotificationCenter()
	for stream in notification.data.added_streams:
	notification_center.add_observer(self, sender=stream)
	for stream in notification.data.removed_streams:
	notification_center.remove_observer(self, sender=stream)

	session = notification.sender
	added_streams = ', '.join(stream.type for stream in notification.data.added_streams)
	removed_streams = ', '.join(stream.type for stream in notification.data.removed_streams)
	action = 'added' if added_streams else 'removed'
	message = '%s party %s %s' % (notification.data.originator.capitalize(), action, added_streams or removed_streams)
	if session is not self.active_session:
	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	message = '%s in session with %s' % (message, identity)
	show_notice(message)
	self._update_prompt()

	def _NH_AudioStreamGotDTMF(self, notification):
	notification_center = NotificationCenter()
	digit = notification.data.digit
	filename = 'sounds/dtmf_%s_tone.wav' % {'*': 'star', '#': 'pound'}.get(digit, digit)
	wave_player = WavePlayer(self.voice_audio_mixer, ResourcePath(filename).normalized)
	notification_center.add_observer(self, sender=wave_player)
	self.voice_audio_bridge.add(wave_player)
	wave_player.start()
	show_notice('Got DMTF %s' % notification.data.digit)

	def _NH_RTPStreamZRTPVerifiedStateChanged(self, notification):
	self._update_prompt()

	def _NH_RTPStreamZRTPPeerNameChanged(self, notification):
	self._update_prompt()

	def _NH_RTPStreamDidEnableEncryption(self, notification):
	stream = notification.sender
	show_notice("%s encryption activated using %s (%s)" % (stream.type.title(), stream.encryption.type, stream.encryption.cipher))

	if stream.encryption.type == 'ZRTP' and stream.type == 'audio':
	peer_name = stream.encryption.zrtp.peer_name if stream.encryption.zrtp.peer_name else None
	sas = stream.encryption.zrtp.sas.decode() if isinstance(stream.encryption.zrtp.sas, bytes) else stream.encryption.zrtp.sas
	show_notice("ZRTP secret is %s" % sas)
	show_notice("ZRTP peer name is %s, use /zrtp_name command to change it" % (peer_name or 'not set'))
	show_notice("ZRTP peer is %s, use /zrtp_verified command to toggle it" % ('verified' if stream.encryption.zrtp.verified else 'not verified'))

	self._update_prompt()

	def _NH_RTPStreamDidChangeRTPParameters(self, notification):
	stream = notification.sender
	show_notice('Audio RTP parameters changed:')
	show_notice('Audio stream using %s codec at %sHz' % (stream.codec.capitalize(), stream.sample_rate))
	show_notice('Audio RTP endpoints %s:%d <-> %s:%d' % (stream.local_rtp_address, stream.local_rtp_port, stream.remote_rtp_address, stream.remote_rtp_port))
	if stream.encryption.active:
	show_notice('RTP audio stream is encrypted using %s (%s)\n' % (stream.encryption.type, stream.encryption.cipher))

	def _NH_AudioStreamDidStartRecordingAudio(self, notification):
	show_notice('Recording audio to %s' % notification.data.filename)

	def _NH_AudioStreamDidStopRecordingAudio(self, notification):
	show_notice('Stopped recording audio to %s' % notification.data.filename)

	def _NH_ChatStreamSMPVerificationDidStart(self, notification):
	show_notice('OTR verification started', bold=False)
	data = notification.data
	session = self.active_session
	stream = notification.sender
	if data.originator == 'remote':
	if data.question == self.smp_verification_question:
	try:
	audio_stream = next(stream for stream in session.streams if stream.type=='audio' and stream.encryption.type=='ZRTP' and stream.encryption.active and stream.encryption.zrtp.verified)
	except StopIteration:
	stream.encryption.smp_abort()
	else:
	show_notice("OTR verification requested by remote and replied automatically using ZRTP SAS", bold=False)
	stream.encryption.smp_answer(audio_stream.encryption.zrtp.sas.encode())
	self.smp_verifified_using_zrtp = True
	else:
	show_notice("OTR verification requested by remote, reply using /otr_answer")
	show_notice('Question: %s' % data.question.decode())
	self._update_prompt()
	else:
	try:
	audio_stream = next(stream for stream in session.streams if stream.type=='audio' and stream.encryption.type=='ZRTP' and stream.encryption.active and stream.encryption.zrtp.verified)
	except StopIteration:
	pass
	else:
	stream.encryption.smp_verify(audio_stream.encryption.zrtp.sas.encode(), question=self.smp_verification_question)
	show_notice("OTR verification performed automatically using ZRTP SAS...", bold=False)
	self._update_prompt()

	def _NH_ChatStreamSMPVerificationDidNotStart(self, notification):
	pass

	def _NH_ChatStreamSMPVerificationDidEnd(self, notification):
	data = notification.data
	stream = notification.sender
	if data.status is SMPStatus.Success:
	show_notice("OTR verification %s" % ('succeeded' if data.same_secrets else 'failed: the secret is wrong'), bold=False)
	stream.encryption.verified = data.same_secrets
	self._update_prompt()
	elif data.status is SMPStatus.Interrupted:
	show_notice("OTR verification aborted: %s" % data.reason, bold=False)
	elif data.status is SMPStatus.ProtocolError:
	show_notice("OTR verification error: %s" % data.reason, bold=False)
	if data.reason == 'startup collision':
	self.smp_verification_tries -= 1
	self.smp_verification_delay *= 2
	if self.smp_verification_tries > 0:
	# TODO verify later
	pass

	def _NH_ChatStreamOTRError(self, notification):
	show_notice("Chat encryption error: %s", notification.data.error, bold=False)

	def _NH_ChatStreamOTRVerifiedStateChanged(self, notification):
	self._update_prompt()

	def _NH_ChatStreamOTREncryptionStateChanged(self, notification):
	data = notification.data
	stream = notification.sender
	if data.new_state is OTRState.Encrypted:
	local_fingerprint = stream.encryption.key_fingerprint
	remote_fingerprint = stream.encryption.peer_fingerprint
	show_notice("Chat encryption activated using OTR protocol", bold=False)
	show_notice("OTR local fingerprint %s" % local_fingerprint, bold=False)
	show_notice("OTR remote fingerprint %s" % remote_fingerprint, bold=False)

	ui = UI()
	if stream.encryption.verified:
	ui.status = "OTR remote fingerprint has been verified"
	else:
	ui.status = "OTR remote fingerprint has not yet been verified"

	reactor.callLater(15, setattr, ui, 'status', None)

	elif data.new_state is OTRState.Finished:
	show_notice("Chat encryption deactivated", bold=False)
	elif data.new_state is OTRState.Plaintext:
	show_notice("Chat encryption deactivated", bold=False)

	self._update_prompt()

	def _NH_ChatStreamGotMessage(self, notification):
	if not notification.data.message.content_type.startswith("text/"):
	return
	remote_identity = notification.data.message.sender.display_name or notification.data.message.sender.uri
	doc = html.fromstring(notification.data.message.content)
	if doc.body.text is not None:
	doc.body.text = doc.body.text.lstrip('\n')
	for br in doc.xpath('.//br'):
	br.tail = '\n' + (br.tail or '')
	head = RichText('%s> ' % remote_identity, foreground='blue')
	ui = UI()
	ui.writelines([head + line for line in doc.body.text_content().splitlines()])

	def _NH_DefaultAudioDeviceDidChange(self, notification):
	SIPApplication._NH_DefaultAudioDeviceDidChange(self, notification)
	if notification.data.changed_input and self.voice_audio_mixer.input_device=='system_default':
	show_notice('Switched default input device to: %s' % self.voice_audio_mixer.real_input_device)
	if notification.data.changed_output and self.voice_audio_mixer.output_device=='system_default':
	show_notice('Switched default output device to: %s' % self.voice_audio_mixer.real_output_device)
	if notification.data.changed_output and self.alert_audio_mixer.output_device=='system_default':
	show_notice('Switched alert device to: %s' % self.alert_audio_mixer.real_output_device)

	def _NH_AudioDevicesDidChange(self, notification):
	old_devices = set(notification.data.old_devices)
	new_devices = set(notification.data.new_devices)
	added_devices = new_devices - old_devices
	removed_devices = old_devices - new_devices
	changed_input_device = self.voice_audio_mixer.real_input_device in removed_devices
	changed_output_device = self.voice_audio_mixer.real_output_device in removed_devices
	changed_alert_device = self.alert_audio_mixer.real_output_device in removed_devices

	SIPApplication._NH_AudioDevicesDidChange(self, notification)

	if added_devices:
	show_notice('Added audio device(s): %s' % ', '.join(sorted(added_devices)))
	if removed_devices:
	show_notice('Removed audio device(s): %s' % ', '.join(sorted(removed_devices)))
	if changed_input_device:
	show_notice('Input device has been switched to: %s' % self.voice_audio_mixer.real_input_device)
	if changed_output_device:
	show_notice('Output device has been switched to: %s' % self.voice_audio_mixer.real_output_device)
	if changed_alert_device:
	show_notice('Alert device has been switched to: %s' % self.alert_audio_mixer.real_output_device)

	def _NH_WavePlayerDidEnd(self, notification):
	notification_center = NotificationCenter()
	notification_center.remove_observer(self, sender=notification.sender)

	def _NH_MediaStreamDidNotInitialize(self, notification):
	if self.must_exit:
	self.stop()

	def _NH_SIPSessionTransferGotProgress(self, notification):
	show_notice('Session transfer progress: %s (%s)' % (notification.data.reason, notification.data.code))

	def _NH_SIPSessionTransferDidFail(self, notification):
	show_notice('Session transfer failed: %s (%s)' % (notification.data.reason, notification.data.code))

	def _NH_SIPSessionGotConferenceInfo(self, notification):
	info = notification.data.conference_info
	show_notice('Conference users: %s' % ", ".join(user.entity.split(":")[1] for user in info.users))
	if info.conference_description.resources:
	for file in info.conference_description.resources.files:
	show_notice('Conference shared file: %s (%s bytes)' % (file.name, file.size))

	def _NH_RTPStreamICENegotiationDidSucceed(self, notification):
	show_notice(" ")
	show_notice("ICE negotiation succeeded in %s seconds" % notification.data.duration)
	if self.rtp_statistics:
	show_notice(" ")
	show_notice("Local ICE candidates:")
	for candidate in notification.data.local_candidates:
	show_notice(str(candidate))
	show_notice(" ")
	show_notice("Remote ICE candidates:")
	for candidate in notification.data.remote_candidates:
	show_notice(str(candidate))
	show_notice(" ")
	show_notice("ICE connectivity valid pairs:")
	for check in notification.data.valid_pairs:
	show_notice(str(check))
	show_notice(" ")

	def _NH_RTPStreamICENegotiationDidFail(self, notification):
	show_notice("\n")
	show_notice("ICE negotiation failed: %s" % notification.data.reason.decode())

	# command handlers
	#

	def _CH_call(self, target, video_option=None):
	if video_option and video_option != '+video':
	raise TypeError()
	if self.outgoing_session is not None:
	show_notice('Please cancel any outgoing sessions before makeing any new ones')
	return
	call_initializer = OutgoingCallInitializer(self.account, target, audio=True, video=video_option=='+video')
	call_initializer.start()

	def _CH_audio(self, target, chat_option=None):
	if chat_option and chat_option != '+chat':
	raise TypeError()
	if self.outgoing_session is not None:
	show_notice('Please cancel any outgoing sessions before makeing any new ones')
	return
	call_initializer = OutgoingCallInitializer(self.account, target, audio=True, chat=chat_option=='+chat')
	call_initializer.start()

	def _CH_m(self, target=None):
	self._CH_message(target)

	def _CH_message(self, target=None):
	if not target:
	show_notice('Usage: /message user@domain')

	route = None

	if isinstance(self.account, BonjourAccount):
	try:
	idx = int(target)
	neighbour = list(self.neighbours.values())[idx-1]
	show_notice('Using Bonjour neighbour "%s (%s)" <%s>' % (neighbour.display_name, neighbour.host, neighbour.uri))
	target = '%s@%s' % (neighbour.uri.user, neighbour.uri.host)
	route = Route(address=neighbour.uri.host, port=neighbour.uri.port, transport=neighbour.uri.transport)
	except (IndexError, TypeError):
	i = 1
	lines = ['Bonjour neighbours:']
	for key, neighbour in self.neighbours.items():
	lines.append(' "%s (%s)" <%s> (%i)' % (neighbour.display_name, neighbour.host, neighbour.uri, i))
	i = i + 1
	show_notice(lines)

	try:
	SIPURI.parse('sip:%s' % target)
	if self.message_session_to != target:
	message_session = self.message_session(target, route=route)
	self.message_session_to = target
	except SIPCoreError:
	show_notice('Invalid SIP URI %s' % target)

	def _CH_chat(self, target, audio_option=None):
	if audio_option and audio_option != '+audio':
	raise TypeError()
	if self.outgoing_session is not None:
	show_notice('Please cancel any outgoing sessions before makeing any new ones')
	return
	call_initializer = OutgoingCallInitializer(self.account, target, audio=audio_option=='+audio', chat=True)
	call_initializer.start()

	def send_outgoing_file(self, target, filepath):
	if '~' in filepath:
	filepath = os.path.expanduser(filepath)
	filepath = os.path.abspath(filepath)
	if (os.path.exists(filepath)):
	transfer_handler = OutgoingTransferHandler(self.account, target, filepath)
	transfer_handler.start()
	else:
	show_notice('File %s does not exist' % filepath)


	def _CH_send(self, target, filepath):
	self.send_outgoing_file(target, filepath)

	def _CH_next(self):
	if len(self.connected_sessions) > 1:
	self.active_session.hold()
	self.active_session = self.connected_sessions[(self.connected_sessions.index(self.active_session)+1) % len(self.connected_sessions)]
	self.message_session_to = None
	self.active_session.unhold()
	self.ignore_local_unhold = True
	identity = str(self.active_session.remote_identity.uri)
	if self.active_session.remote_identity.display_name:
	identity = '"%s" <%s>' % (self.active_session.remote_identity.display_name, identity)
	show_notice('Active SIP session: "%s" (%d/%d)' % (identity, self.connected_sessions.index(self.active_session)+1, len(self.connected_sessions)))
	self._update_prompt()

	def _CH_prev(self):
	if len(self.connected_sessions) > 1:
	self.active_session.hold()
	self.active_session = self.connected_sessions[self.connected_sessions.index(self.active_session)-1]
	self.message_session_to = None
	self.active_session.unhold()
	self.ignore_local_unhold = True
	identity = str(self.active_session.remote_identity.uri)
	if self.active_session.remote_identity.display_name:
	identity = '"%s" <%s>' % (self.active_session.remote_identity.display_name, identity)
	show_notice('Active SIP session: "%s" (%d/%d)' % (identity, self.connected_sessions.index(self.active_session)+1, len(self.connected_sessions)))
	self._update_prompt()

	def _CH_sessions(self):
	if self.connected_sessions:
	lines = ['Connected sessions:']
	for session in self.connected_sessions:
	identity = str(session.remote_identity.uri)
	if session.remote_identity.display_name:
	identity = '"%s" <%s>' % (session.remote_identity.display_name, identity)
	lines.append(' SIP session with %s (%d/%d) - %s' % (identity, self.connected_sessions.index(session)+1, len(self.connected_sessions), 'active' if session is self.active_session else 'on hold'))
	if len(self.connected_sessions) > 1:
	lines.append('Use the /next and /prev commands to switch the active session')
	show_notice(lines)
	else:
	show_notice('There are no connected sessions')

	def _CH_n(self):
	self._CH_neighbours()

	def _CH_neighbours(self):
	lines = ['Bonjour neighbours:']
	for key, neighbour in self.neighbours.items():
	lines.append(' "%s (%s)" <%s>' % (neighbour.display_name, neighbour.host, neighbour.uri))
	show_notice(lines)

	def _CH_trace(self, *types):
	if not types:
	lines = []
	lines.append('SIP tracing to console is now %s' % ('active' if self.logger.sip_to_stdout else 'inactive'))
	lines.append('MSRP tracing to console is now %s' % ('active' if self.logger.msrp_to_stdout else 'inactive'))
	lines.append('PJSIP tracing to console is now %s' % ('active' if self.logger.pjsip_to_stdout else 'inactive'))
	lines.append('Notification tracing to console is now %s' % ('active' if self.logger.notifications_to_stdout else 'inactive'))
	show_notice(lines)
	return

	add_types = [type[1:] for type in types if type[0] == '+']
	remove_types = [type[1:] for type in types if type[0] == '-']
	toggle_types = [type for type in types if type[0] not in ('+', '-')]

	if 'sip' in add_types or ('sip' in toggle_types and not self.logger.sip_to_stdout):
	self.logger.sip_to_stdout = True
	show_notice('SIP tracing to console is now activated')
	elif 'sip' in remove_types or ('sip' in toggle_types and self.logger.sip_to_stdout):
	self.logger.sip_to_stdout = False
	show_notice('SIP tracing to console is now deactivated')

	if 'msrp' in add_types or ('msrp' in toggle_types and not self.logger.msrp_to_stdout):
	self.logger.msrp_to_stdout = True
	show_notice('MSRP tracing to console is now activated')
	elif 'msrp' in remove_types or ('msrp' in toggle_types and self.logger.msrp_to_stdout):
	self.logger.msrp_to_stdout = False
	show_notice('MSRP tracing to console is now deactivated')

	if 'pjsip' in add_types or ('pjsip' in toggle_types and not self.logger.pjsip_to_stdout):
	self.logger.pjsip_to_stdout = True
	show_notice('PJSIP tracing to console is now activated')
	elif 'pjsip' in remove_types or ('pjsip' in toggle_types and self.logger.pjsip_to_stdout):
	self.logger.pjsip_to_stdout = False
	show_notice('PJSIP tracing to console is now deactivated')

	if 'notifications' in add_types or ('notifications' in toggle_types and not self.logger.notifications_to_stdout):
	self.logger.notifications_to_stdout = True
	show_notice('Notification tracing to console is now activated')
	elif 'notifications' in remove_types or ('notifications' in toggle_types and self.logger.notifications_to_stdout):
	self.logger.notifications_to_stdout = False
	show_notice('Notification tracing to console is now deactivated')

	def _CH_rtp(self, state='toggle'):
	if state == 'toggle':
	new_state = self.rtp_statistics is None
	elif state == 'on':
	new_state = True
	elif state == 'off':
	new_state = False
	else:
	raise TypeError()
	if (self.rtp_statistics and new_state) or (not self.rtp_statistics and not new_state):
	return
	if new_state:
	self.rtp_statistics = RTPStatisticsThread()
	self.rtp_statistics.start()
	show_notice('Output of RTP statistics and ICE negotiation results on console is now activated')
	else:
	self.rtp_statistics.stop()
	self.rtp_statistics = None
	show_notice('Output of RTP statistics and ICE negotiation results on console is now dectivated')

	def _CH_mute(self, state='toggle'):
	if state == 'toggle':
	self.voice_audio_mixer.muted = not self.voice_audio_mixer.muted
	elif state == 'on':
	self.voice_audio_mixer.muted = True
	elif state == 'off':
	self.voice_audio_mixer.muted = False
	show_notice('The microphone is now %s' % ('muted' if self.voice_audio_mixer.muted else 'unmuted'))

	def _CH_camera(self, device=None):
	engine = Engine()
	settings = SIPSimpleSettings()
	video_devices = [None] + sorted(engine.video_devices)
	if device is None:
	if settings.video.device in video_devices:
	old_device = settings.video.device
	else:
	old_device = None
	new_device = video_devices[(video_devices.index(old_device)+1) % len(video_devices)]
	settings.video.device = new_device
	settings.save()
	show_notice('Video device changed to %s' % new_device)
	else:
	device = device.decode(sys.getfilesystemencoding())
	if device == 'None':
	device = None
	elif device not in video_devices:
	show_notice('Unknown video device %s. Type /devices to see a list of available devices' % device)
	return
	try:
	settings.video.device = new_device
	except SIPCoreError as e:
	show_notice('Failed to set video device to %s: %s' % (device, str(e)))
	else:
	show_notice('Video device changed to %s' % new_device)

	def _CH_input(self, device=None):
	engine = Engine()
	settings = SIPSimpleSettings()
	input_devices = [None, 'system_default'] + sorted(engine.input_devices)
	if device is None:
	if self.voice_audio_mixer.input_device in input_devices:
	old_input_device = self.voice_audio_mixer.input_device
	else:
	old_input_device = None
	tail_length = settings.audio.echo_canceller.tail_length if settings.audio.echo_canceller.enabled else 0
	new_input_device = input_devices[(input_devices.index(old_input_device)+1) % len(input_devices)]
	try:
	self.voice_audio_mixer.set_sound_devices(new_input_device, self.voice_audio_mixer.output_device, tail_length)
	except SIPCoreError as e:
	show_notice('Failed to set input device to %s: %s' % (new_input_device, str(e)))
	else:
	if new_input_device == 'system_default':
	show_notice('Input device changed to %s (system default device)' % self.voice_audio_mixer.real_input_device)
	else:
	show_notice('Input device changed to %s' % new_input_device)
	else:
	device = device.decode(sys.getfilesystemencoding())
	if device == 'None':
	device = None
	elif device not in input_devices:
	show_notice('Unknown input device %s. Type /devices to see a list of available devices' % device)
	return
	tail_length = settings.audio.echo_canceller.tail_length if settings.audio.echo_canceller.enabled else 0
	try:
	self.voice_audio_mixer.set_sound_devices(device, self.voice_audio_mixer.output_device, self.voice_audio_mixer.tail_length)
	except SIPCoreError as e:
	show_notice('Failed to set input device to %s: %s' % (device, str(e)))
	else:
	if device == 'system_default':
	show_notice('Input device changed to %s (system default device)' % self.voice_audio_mixer.real_input_device)
	else:
	show_notice('Input device changed to %s' % device)

	def _CH_output(self, device=None):
	engine = Engine()
	settings = SIPSimpleSettings()
	output_devices = [None, 'system_default'] + sorted(engine.output_devices)
	if device is None:
	if self.voice_audio_mixer.output_device in output_devices:
	old_output_device = self.voice_audio_mixer.output_device
	else:
	old_output_device = None
	tail_length = settings.audio.echo_canceller.tail_length if settings.audio.echo_canceller.enabled else 0
	new_output_device = output_devices[(output_devices.index(old_output_device)+1) % len(output_devices)]
	try:
	self.voice_audio_mixer.set_sound_devices(self.voice_audio_mixer.input_device, new_output_device, tail_length)
	except SIPCoreError as e:
	show_notice('Failed to set output device to %s: %s' % (new_output_device, str(e)))
	else:
	if new_output_device == 'system_default':
	show_notice('Output device changed to %s (system default device)' % self.voice_audio_mixer.real_output_device)
	else:
	show_notice('Output device changed to %s' % new_output_device)
	else:
	device = device.decode(sys.getfilesystemencoding())
	if device == 'None':
	device = None
	elif device not in output_devices:
	show_notice('Unknown output device %s. Type /devices to see a list of available devices' % device)
	return
	tail_length = settings.audio.echo_canceller.tail_length if settings.audio.echo_canceller.enabled else 0
	try:
	self.voice_audio_mixer.set_sound_devices(self.voice_audio_mixer.input_device, device, tail_length)
	except SIPCoreError as e:
	show_notice('Failed to set output device to %s: %s' % (device, str(e)))
	else:
	if device == 'system_default':
	show_notice('Output device changed to %s (system default device)' % self.voice_audio_mixer.real_output_device)
	else:
	show_notice('Output device changed to %s' % device)

	def _CH_alert(self, device=None):
	engine = Engine()
	settings = SIPSimpleSettings()
	output_devices = [None, 'system_default'] + sorted(engine.output_devices)
	if device is None:
	if self.alert_audio_mixer.output_device in output_devices:
	old_output_device = self.alert_audio_mixer.output_device
	else:
	old_output_device = None
	tail_length = settings.audio.echo_canceller.tail_length if settings.audio.echo_canceller.enabled else 0
	new_output_device = output_devices[(output_devices.index(old_output_device)+1) % len(output_devices)]
	try:
	self.alert_audio_mixer.set_sound_devices(self.alert_audio_mixer.input_device, new_output_device, tail_length)
	except SIPCoreError as e:
	old_output_device = new_output_device
	show_notice('Failed to set alert device to %s: %s' % (new_output_device, str(e)))
	else:
	if new_output_device == 'system_default':
	show_notice('Alert device changed to %s (system default device)' % self.alert_audio_mixer.real_output_device)
	else:
	show_notice('Alert device changed to %s' % new_output_device)
	else:
	device = device.decode(sys.getfilesystemencoding())
	if device == 'None':
	device = None
	elif device not in output_devices:
	show_notice('Unknown output device %s. Type /devices to see a list of available devices' % device)
	return
	tail_length = settings.audio.echo_canceller.tail_length if settings.audio.echo_canceller.enabled else 0
	try:
	self.alert_audio_mixer.set_sound_devices(self.alert_audio_mixer.input_device, device, tail_length)
	except SIPCoreError as e:
	show_notice('Failed to set alert device to %s: %s' % (device, str(e)))
	else:
	if device == 'system_default':
	show_notice('Alert device changed to %s (system default device)' % self.alert_audio_mixer.real_output_device)
	else:
	show_notice('Alert device changed to %s' % device)

	def _CH_devices(self):
	engine = Engine()
	settings = SIPSimpleSettings()
	show_notice('Available audio input devices: %s' % ', '.join(['None', 'system_default'] + sorted(engine.input_devices)), bold=False)
	show_notice('Available audio output devices: %s' % ', '.join(['None', 'system_default'] + sorted(engine.output_devices)), bold=False)
	if self.voice_audio_mixer.input_device == 'system_default':
	show_notice('Using audio input device: %s (system default device)' % self.voice_audio_mixer.real_input_device, bold=False)
	else:
	show_notice('Using audio input device: %s' % self.voice_audio_mixer.input_device, bold=False)

	if self.voice_audio_mixer.output_device == 'system_default':
	show_notice('Using audio output device: %s (system default device)' % self.voice_audio_mixer.real_output_device, bold=False)
	else:
	show_notice('Using audio output device: %s' % self.voice_audio_mixer.output_device, bold=False)

	if self.alert_audio_mixer.output_device == 'system_default':
	show_notice('Using audio alert device: %s (system default device)' % self.alert_audio_mixer.real_output_device, bold=False)
	else:
	show_notice('Using audio alert device: %s' % self.alert_audio_mixer.output_device, bold=False)

	if engine.video_devices:
	show_notice('Available cameras: %s' % ', '.join(sorted(engine.video_devices)))
	show_notice('Selected camera: %s' % settings.video.device)

	else:
	if self.enable_video:
	show_notice('No camera present, video is disabled')
	self.enable_video = False

	def _CH_help(self):
	self._print_help()

	def _CH_quit(self):
	self.stop()

	def _CH_eof(self):
	ui = UI()
	if self.active_session is not None:
	if self.active_session in self.sessions_with_proposals:
	ui.status = 'Cancelling proposal...'
	self.active_session.cancel_proposal()
	else:
	ui.status = 'Ending SIP session...'
	self.active_session.end()
	elif self.outgoing_session is not None:
	ui.status = 'Cancelling SIP session...'
	self.outgoing_session.end()
	else:
	self.stop()

	def _CH_hangup(self):
	if self.active_session is not None:
	show_notice('Ending SIP session...')
	self.active_session.end()
	elif self.outgoing_session is not None:
	show_notice('Cancelling SIP session...')
	self.outgoing_session.end()
	else:
	try:
	message_session = next((session for session in self.message_sessions if session.target == self.message_session_to and self.account == session.account))
	except StopIteration:
	pass
	else:
	message_session.end()
	try:
	self.message_sessions.remove(message_session)
	except KeyError:
	show_notice('Message session not found')
	pass

	@run_in_green_thread
	def _CH_dtmf(self, tones):
	if self.active_session is not None:
	audio_stream = next((stream for stream in self.active_session.streams if stream.type == 'audio'), None)
	if audio_stream is not None:
	notification_center = NotificationCenter()
	for digit in tones:
	filename = 'sounds/dtmf_%s_tone.wav' % {'*': 'star', '#': 'pound'}.get(digit, digit)
	wave_player = WavePlayer(self.voice_audio_mixer, ResourcePath(filename).normalized)
	notification_center.add_observer(self, sender=wave_player)
	audio_stream.send_dtmf(digit)
	if self.active_session.account.rtp.inband_dtmf:
	audio_stream.bridge.add(wave_player)
	self.voice_audio_bridge.add(wave_player)
	wave_player.start()
	api.sleep(0.3)

	def _CH_record(self, state='toggle'):
	if self.active_session is None:
	return
	audio_stream = next((stream for stream in self.active_session.streams if stream.type == 'audio'), None)
	if audio_stream is not None:
	if state == 'toggle':
	new_state = audio_stream.recorder is None
	elif state == 'on':
	new_state = True
	elif state == 'off':
	new_state = False
	else:
	show_notice('Illegal argument to /record. Type /help for a list of available commands.')
	return
	if new_state:
	settings = SIPSimpleSettings()
	direction = self.active_session.direction
	remote = "%s@%s" % (self.active_session.remote_identity.uri.user, self.active_session.remote_identity.uri.host)
	filename = "%s-%s-%s.wav" % (datetime.now().strftime("%Y%m%d-%H%M%S"), remote, direction)
	path = os.path.join(settings.audio.directory.normalized, self.active_session.account.id)
	audio_stream.start_recording(os.path.join(path, filename))
	else:
	audio_stream.stop_recording()


	def _CH_account(self, *args):
	account_manager = AccountManager()

	if not args or args[0] == 'list':
	show_notice('Accounts available: %s' % ", ".join(account.id for account in account_manager.iter_accounts() if account != self.account and account.enabled))

	elif args and args[0] == 'register':
	if not self.account.sip.register:
	self.registration_succeeded[self.account.id] = False

	self.account.sip.register = not self.account.sip.register
	self.account.save()

	elif args and args[0] == 'enroll':
	settings = SIPSimpleSettings()
	try:
	username = args[1].strip()
	password = args[2].strip()
	email = args[3].strip()
	display_name = " ".join(args[4:])

	if not "@" in email:
	show_notice('Email address is not valid, must be user@domain')
	return

	if not display_name:
	show_notice('Please specify a display name')
	return

	sip_address = '%s@%s' % (username, settings.enrollment.default_domain)
	if account_manager.has_account(sip_address):
	show_notice('Account %s is already defined' % sip_address)
	return
	except IndexError:
	show_notice('To enroll an account you must provide: username password email display_name')
	return
	else:
	data = self.enroll(username, password, email, display_name)

	if data['error']:
	show_notice(data['error'])
	else:
	show_notice('Account %s created' % data['sip_address'])

	elif args:
	new_account = args[0]
	possible_accounts = [account for account in account_manager.iter_accounts() if new_account in account.id and account.enabled]
	if len(possible_accounts) > 1:
	show_notice('More than one account exists which matches %s: %s' % (new_account, ', '.join(sorted(account.id for account in possible_accounts))), bold=False)
	elif len(possible_accounts) == 0:
	show_notice('No enabled account which matches %s was found. Available and enabled accounts: %s' % (self.options.account, ', '.join(sorted(possible_accounts))), bold=False)
	elif possible_accounts[0] == self.account:
	show_notice('Same account selected')
	elif possible_accounts[0] != self.account:
	self.switch_account(possible_accounts[0])

	def switch_account(self, account):
	if isinstance(self.account, Account):
	self.account.sip.register = False
	self.account.save()

	self.registration_succeeded[self.account.id] = False

	self.account = account
	show_notice('Switching account to %s' % self.account.id)

	notification_center = NotificationCenter()
	notification_center.add_observer(self, sender=account)

	if isinstance(self.account, Account):
	self.account.sip.register = True
	self.account.save()

	self._update_prompt()

	def enroll(self, username, password, email, display_name):
	settings = SIPSimpleSettings()

	tzname = datetime.now(tzlocal()).tzname() or ""

	post_data = {'password' : password.encode("utf8"),
	'username' : username.encode("utf8"),
	'email' : email.encode("utf8"),
	'display_name' : display_name.encode("utf8"),
	'tzinfo' : tzname }

	return_data = {}

	try:
	r = requests.post(settings.enrollment.url, timeout=5, data=post_data)
	settings = SIPSimpleSettings()
	show_notice("Enrollment request sent to %s" % settings.enrollment.url)

	if r.status_code == 200:
	body = r.json()
	if not body["success"]:
	return_data['error'] = "Enrollment failed: %s" % body["error_message"]
	else:
	data = defaultdict(lambda: None, body)
	sip_address = data['sip_address']
	outbound_proxy = data['outbound_proxy']

	try:
	account = Account(sip_address)
	except ValueError as e:
	return_data['error'] = "Local account create error: %s" % str(e)
	else:
	account.auth.password = password
	account.sip.always_use_my_proxy = True
	account.sip.register = True
	account.rtp.srtp_encryption = 'opportunistic'
	account.nat_traversal.msrp_relay = data['msrp_relay']

	if data['outbound_proxy']:
	account.sip.outbound_proxy = data['outbound_proxy']

	if data['xcap_root']:
	account.xcap.xcap_root = data['xcap_root']
	account.xcap.enabled = True

	account.enabled = True
	account.save()
	account_manager = AccountManager()
	account_manager.default_account = account

	self.switch_account(account)

	return_data = data
	else:
	return_data['error'] = "Enrollment server error code %s" % r.status_code

	except Exception as e:
	return_data['error'] = "Enrollment exception: %s" % str(e)

	return return_data

	def _CH_otr(self):
	if self.active_session is None:
	message_session = self.message_session(self.message_session_to)

	if not message_session:
	return

	if message_session.encryption.active:
	show_notice("Message encryption will stop")
	message_session.encryption.stop()
	else:
	show_notice("Message encryption will start")
	message_session.encryption.start()

	return

	chat_stream = next((stream for stream in self.active_session.streams if stream.type == 'chat'), None)

	if chat_stream is None:
	return

	if chat_stream.encryption.active:
	show_notice("Chat encryption will stop")
	chat_stream.encryption.stop()
	else:
	show_notice("Chat encryption will start")
	chat_stream.encryption.start()

	def _CH_otr_secret(self, *args):
	secret = " ".join(args) if args else None
	if secret is None and self.smp_secret:
	show_notice("OTR secret answer is: %s" % self.smp_secret)
	return

	self.smp_secret = secret
	show_notice("OTR secret answer is now set to: %s" % secret)

	def _CH_otr_answer(self, *args):
	answer = " ".join(args) if args else None

	if self.active_session is None:
	message_session = self.message_session(self.message_session_to)

	if not message_session:
	show_notice("OTR functions can be used only during active chat sessions")
	return

	message_session.encryption.smp_answer(answer.encode())

	else:
	chat_stream = next((stream for stream in self.active_session.streams if stream.type == 'chat'), None)

	if chat_stream is None:
	show_notice("OTR functions can be used only during active chat sessions")
	return

	if answer:
	chat_stream.encryption.smp_answer(answer.encode())

	def _CH_otr_question(self, *args):
	question = " ".join(args) if args else None

	if self.smp_secret is None:
	show_notice("OTR question can be asked only after secret has been set with /otr_secret")
	return

	if self.active_session is None:
	message_session = self.message_session(self.message_session_to)

	if not message_session:
	show_notice("OTR functions can be used only during active chat sessions")
	return

	if question:
	show_notice("OTR SMP verification question will be asked for message: %s" % question)
	message_session.encryption.verified = False
	message_session.encryption.smp_verify(self.smp_secret.encode(), question=question.encode())

	return

	chat_stream = next((stream for stream in self.active_session.streams if stream.type == 'chat'), None)
	audio_stream = next((stream for stream in self.active_session.streams if stream.type == 'audio'), None)

	if chat_stream is None:
	show_notice("OTR functions can be used only during active chat sessions")
	return

	if self.smp_secret is None:
	show_notice("First set the SMP secret answer using /otr_secret command")
	return

	if question:
	show_notice("OTR SMP verification question will be asked: %s" % question)
	chat_stream.encryption.verified = False
	chat_stream.encryption.smp_verify(self.smp_secret.encode(), question=question.encode())

	def _CH_zrtp_verified(self):
	if self.active_session is None:
	show_notice("ZRTP functions can be used only during active audio sessions")
	return

	audio_stream = next((stream for stream in self.active_session.streams if stream.type == 'audio'), None)

	if audio_stream is None:
	show_notice("ZRTP functions can be used only during active audio sessions")
	return

	audio_stream.encryption.zrtp.verified = not audio_stream.encryption.zrtp.verified
	show_notice("ZRTP peer is now %s" % ('verified' if audio_stream.encryption.zrtp.verified else 'not verified'))

	def _CH_zrtp_name(self, *args):
	if self.active_session is None:
	show_notice("ZRTP functions can be used only during active audio sessions")
	return

	audio_stream = next((stream for stream in self.active_session.streams if stream.type == 'audio'), None)

	if audio_stream is None:
	show_notice("ZRTP functions can be used only during active audio sessions")
	return

	peer_name = " ".join(args) if args else None
	audio_stream.encryption.zrtp.peer_name = peer_name
	show_notice("ZRTP peer name is now %s" % audio_stream.encryption.zrtp.peer_name)

	def _CH_hold(self, state='toggle'):
	if self.active_session is not None:
	if state == 'toggle':
	new_state = not self.active_session.on_hold
	elif state == 'on':
	new_state = True
	elif state == 'off':
	new_state = False
	else:
	show_notice('Illegal argument to /hold. Type /help for a list of available commands.')
	return
	if new_state:
	self.active_session.hold()
	else:
	self.active_session.unhold()

	def _CH_add(self, stream_name):
	if self.active_session is None:
	show_notice('There is no active session')
	return
	if stream_name in (stream.type for stream in self.active_session.streams):
	show_notice('The active session already has a %s stream' % stream_name)
	return
	proposal_handler = OutgoingProposalHandler(self.active_session, **{stream_name: True})
	try:
	proposal_handler.start()
	except IllegalStateError:
	show_notice('Cannot add a stream while another transaction is in progress')

	def _CH_remove(self, stream_name):
	if self.active_session is None:
	show_notice('There is no active session')
	return
	try:
	stream = next((stream for stream in self.active_session.streams if stream.type==stream_name))
	except StopIteration:
	show_notice('The current active session does not have any %s streams' % stream_name)
	else:
	try:
	self.active_session.remove_stream(stream)
	except IllegalStateError:
	show_notice('Cannot remove a stream while another transaction is in progress')

	def _CH_add_participant(self, uri):
	if self.active_session is None:
	show_notice('There is no active session')
	return
	if re.match('^(sip:\|sips:)', uri) is None:
	uri = 'sip:%s' % uri
	try:
	uri = SIPURI.parse(uri)
	except SIPCoreError:
	show_notice('Invalid SIP URI')
	else:
	self.active_session.conference.add_participant(uri)

	def _CH_remove_participant(self, uri):
	if self.active_session is None:
	show_notice('There is no active session')
	return
	if re.match('^(sip:\|sips:)', uri) is None:
	uri = 'sip:%s' % uri
	try:
	uri = SIPURI.parse(uri)
	except SIPCoreError:
	show_notice('Invalid SIP URI')
	else:
	self.active_session.conference.remove_participant(uri)

	def _CH_transfer(self, uri):
	if self.active_session is None:
	show_notice('There is no active session')
	return
	if re.match('^(sip:\|sips:)', uri) is None:
	uri = 'sip:%s' % uri

	if '@' not in uri:
	uri = '%s@%s' % (uri, self.account.id.domain)

	try:
	uri = SIPURI.parse(uri)
	except SIPCoreError:
	show_notice('Invalid SIP URI')
	else:
	self.active_session.transfer(uri)

	def _CH_nickname(self, nickname):
	if self.active_session is not None:
	try:
	chat_stream = next((stream for stream in self.active_session.streams if stream.type=='chat'))
	except StopIteration:
	return
	try:
	chat_stream.set_local_nickname(nickname)
	except Exception as e:
	show_notice('Error setting nickname: %s' % e)

	# private methods
	#

	def _print_help(self):
	lines = []
	lines.append('General commands:')
	lines.append(' /account [list\|register\|user@domain\|enroll user password email display_name]: account management')
	lines.append(' /call {user[@domain]} [+video]: call the specified user using audio and optionally video')
	lines.append(' /chat {user[@domain]} [+audio]: call the specified user using chat and possibly audio')
	lines.append(' /[message \| m] {user[@domain]}: start a message session')
	lines.append(' /send {user[@domain]} {file}: initiate a file transfer with the specified user')
	lines.append(' /next: select the next connected session')
	lines.append(' /prev: select the previous connected session')
	lines.append(' /sessions: show the list of connected sessions')
	if isinstance(self.account, BonjourAccount):
	lines.append(' /[neighbours \| n]: show the list of bonjour neighbours')
	lines.append(' /trace [[+\|-]sip] [[+\|-]msrp] [[+\|-]pjsip] [[+\|-]notifications]: toggle/set tracing on the console (ctrl-x s \| ctrl-x m \| ctrl-x j \| ctrl-x n)')
	lines.append(' /rtp [on\|off]: toggle/set printing RTP statistics and ICE negotiation results on the console (ctrl-x p)')
	lines.append(' /mute [on\|off]: mute the microphone (ctrl-x u)')
	lines.append(' /camera [device]: change audio input device (ctrl-x c)')
	lines.append(' /input [device]: change audio input device (ctrl-x i)')
	lines.append(' /output [device]: change audio output device (ctrl-x o)')
	lines.append(' /alert [device]: change audio alert device (ctrl-x a)')
	lines.append(' /quit: quit the program (ctrl-x q)')
	lines.append(' /help: display this help message (ctrl-x ?)')
	lines.append('In call commands:')
	lines.append(' /hangup: hang-up the active session (ctrl-x h)')
	lines.append(' /dtmf {0-9\|\|#\|A-D}...: send DTMF tones (ctrl-x 0-9\|\|#\|A-D)')
	lines.append(' /record [on\|off]: toggle/set audio recording (ctrl-x r)')
	lines.append(' /hold [on\|off]: hold/unhold (ctrl-x SPACE)')
	lines.append(' /zrtp_verified: toggle verified flag for ZRTP peer (both parties must do it)')
	lines.append(' /zrtp_name name: set name for ZRTP peer')
	lines.append(' /otr: toggle OTR encryption for the chat stream')
	lines.append(' /otr_answer answer: Answer OTR verification question using SMP protocol')
	lines.append(' /otr_secret [secret]: show or set OTR secret')
	lines.append(' /otr_question question: Ask OTR verification question using SMP protocol')
	lines.append(' /add {chat\|audio}: add a stream to the current session')
	lines.append(' /remove {chat\|audio}: remove a stream from the current session')
	lines.append(' /add_participant {user@domain}: add the specified user to the conference')
	lines.append(' /remove_participant {user@domain}: remove the specified user from the conference')
	lines.append(' /transfer {user@domain}: transfer (using blind transfer) callee to the specified destination')
	lines.append(' /nickname nick: set the user nickname whithin a conference')
	show_notice(lines, bold=False)

	def _update_prompt(self):
	return
	ui = UI()
	session = self.active_session
	if session is None:
	ui.prompt = Prompt('%s@%s' % (self.account.id.username, self.account.id.domain), foreground='default')
	else:
	info = []
	identity = '%s@%s' % (session.remote_identity.uri.user, session.remote_identity.uri.host)
	if session.remote_identity.display_name:
	identity = '%s (%s)' % (session.remote_identity.display_name, identity)
	streams = '/'.join(stream.type.capitalize() for stream in session.streams)
	chat_stream = next((stream for stream in session.streams if stream.type == 'chat'), None)
	audio_stream = next((stream for stream in session.streams if stream.type == 'audio'), None)

	if chat_stream and chat_stream.encryption.active:
	info.append('Chat encrypted verified' if chat_stream.encryption.verified else 'Chat encrypted NOT verified')

	if audio_stream and audio_stream.encryption.active:
	if audio_stream.encryption.zrtp:
	if audio_stream.encryption.zrtp.verified:
	if audio_stream.encryption.zrtp.peer_name:
	info.append('Audio encrypted verified with %s' % audio_stream.encryption.zrtp.peer_name)
	else:
	info.append('Audio encrypted verified')
	else:
	info.append('Audio encrypted NOT verified')
	else:
	info.append('Audio encrypted NOT verified')

	if not info:
	info = ['not encrypted']
	ui.prompt = Prompt('%s to %s (%s)' % (streams, identity, ", ".join(info)), foreground='darkred')


	def parse_handle_call_option(option, opt_str, value, parser, name):
	try:
	value = parser.rargs[0]
	except IndexError:
	value = 0
	else:
	if value == '' or value[0] == '-':
	value = 0
	else:
	try:
	value = int(value)
	except ValueError:
	value = 0
	else:
	del parser.rargs[0]
	setattr(parser.values, name, value)


	if __name__ == '__main__':
	description = '%prog is a command-line client for handling multiple audio, chat and file-transfer sessions'
	usage = '%prog [options] [user@domain] [filename]'
	parser = OptionParser(usage=usage, description=description)
	parser.print_usage = parser.print_help
	parser.add_option('-a', '--account', type='string', dest='account', help='The account name to use for any outgoing traffic. If not supplied, the default account will be used.', metavar='NAME')
	parser.add_option('-c', '--config-directory', type='string', dest='config_directory', help='The configuration directory to use. This overrides the default location.')
	parser.add_option('-s', '--trace-sip', action='store_true', dest='trace_sip', default=False, help='Dump the raw contents of incoming and outgoing SIP messages.')
	parser.add_option('-m', '--trace-msrp', action='store_true', dest='trace_msrp', default=False, help='Dump msrp logging information and the raw contents of incoming and outgoing MSRP messages.')
	parser.add_option('-j', '--trace-pjsip', action='store_true', dest='trace_pjsip', default=False, help='Print PJSIP logging output.')
	parser.add_option('-n', '--trace-notifications', action='store_true', dest='trace_notifications', default=False, help='Print all notifications (disabled by default).')
	parser.add_option('-S', '--disable-sound', action='store_true', dest='disable_sound', default=False, help='Disables initializing the sound card.')
	parser.set_default('auto_answer_interval', None)
	parser.add_option('--auto-answer', action='callback', callback=parse_handle_call_option, callback_args=('auto_answer_interval',), help='Interval after which to answer an incoming session (disabled by default). If the option is specified but the interval is not, it defaults to 0 (accept the session as soon as it starts ringing).', metavar='[INTERVAL]')
	parser.set_default('auto_hangup_interval', None)
	parser.add_option('--auto-hangup', action='callback', callback=parse_handle_call_option, callback_args=('auto_hangup_interval',), help='Interval after which to hang up an established session (disabled by default). If the option is specified but the interval is not, it defaults to 0 (hangup the session as soon as it connects).', metavar='[INTERVAL]')
	options, args = parser.parse_args()

	target = args[0] if args else None
	filepath = args[1] if len(args) == 2 else None

	application = SIPSessionApplication()
	application.start(target, options, filepath)

	signal.signal(signal.SIGINT, signal.SIG_DFL)
	application.stopped_event.wait()
	sleep(0.1)

File Metadata

Mime Type: text/x-python
Expires: Sat, Nov 23, 2:19 PM (23 h, 27 m)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 3409259
Default Alt Text: sip-session3 (144 KB)

sip-session3No OneTemporaryActions

sip-session3View Options

File Metadata

Event Timeline

sip-session3
No OneTemporary
Actions

sip-session3
View Options