Python scripting interface to OsmoNITB/OsmoMSC MNCC interface
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#!/usr/bin/env python2
# Python testing tool for establishing calls via the OsmoNITB MNCC
# interface.
# (C) 2015 by Harald Welte <>
# Licensed under GNU General Public License, Version 2 or at your
# option, any later version.
from gsm_call_fsm import GsmCallFsm, GsmCallConnector, GSM48
from mncc_sock import MnccSocket
from thread import start_new_thread
import pykka
import logging as log
import signal, sys, time
import readline, code
import time
# MnccActor provides an interface for GsmCallFsm to send MNCC messages
class MnccActor(pykka.ThreadingActor):
def __init__(self, mncc_sock):
super(MnccActor, self).__init__()
self.mncc_sock = mncc_sock
def on_receive(self, message):
if message['type'] == 'send':
msg = message['msg']
log.debug('MnccActor TxMNCC %s' % msg)
raise Exception('mncc', 'MnccActor Received unhandled %s' % message)
# MNCC receive thread, broadcasting received MNCC packets to GsmCallFsm
def mncc_rx_thread(mncc_sock):
while 1:
msg = mncc_sock.recv()
if msg.is_frame():
log.warning("Dropping traffic frame: %s" % msg)
log.debug("MnccActor RxMNCC %s, broadcasting to Call FSMs" % msg)
# we simply broadcast to all calls
pykka.ActorRegistry.broadcast({'type': 'mncc', 'msg': msg}, GsmCallFsm)
# capture SIGINT (Ctrl+C) and stop all actors
def sigint_handler(signum, frame):
log.basicConfig(level = log.DEBUG,
format = "%(levelname)s %(filename)s:%(lineno)d %(message)s")
signal.signal(signal.SIGINT, sigint_handler)
# start the MnccSocket and associated pykka actor + rx thread
mncc_sock = MnccSocket()
mncc_act = MnccActor.start(mncc_sock)
start_new_thread(mncc_rx_thread, (mncc_sock,))
# convenience wrapper
def connect_call(msisdn_a, msisdn_b, rtp_bridge = True, codecs = GSM48.AllCodecs):
call_conn = GsmCallConnector.start(mncc_act, rtp_bridge, codecs).proxy()
call_conn.start_call_ab(msisdn_a, msisdn_b)
return call_conn
def calls(nr, ramp=1.0):
if (nr & 1):
print('Only even numbers allowed, because each invocation has two call legs')
nr /= 2
for i in range(nr):
a = 90001 + 2*i
b = a + 1
a = str(a)
b = str(b)
print('%d: connect_call(%r, %r)' % (i, a, b))
connect_call(a, b)
# start a first bogus call"")"")"Start calls by typing:")' c = connect_call("90001", "90002")')' c.release()')'or')' calls(200)')"")"")
# start a shell to enable the user to add more calls as needed
vars = globals().copy()
shell = code.InteractiveConsole(vars)
except SystemExit:
# clan up after user leaves interactive shell
sigint_handler(signal.SIGINT, None)