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import sys
import pjsua as pj
import socket
import time

from time import sleep
from datetime import datetime


HOST = None
PORT = 50020
s = None

stop ="false"
server = "132.230.4.8"
username = "mpselftest2"
password = "2mpselftest"

LOG_LEVEL=2
current_call = None
success = ""
number = ""



# Logging callback
def log_cb(level, str, len):
    print str, "I am here"


# Callback to receive events from account
class MyAccountCallback(pj.AccountCallback):

    def __init__(self, account=None):
        pj.AccountCallback.__init__(self, account)

    # Notification on incoming call
    def on_incoming_call(self, call):
        global current_call
	global number
        if current_call:
            call.answer(486, "Busy")
            return
            
        number = call.info().remote_uri

        current_call = call

        call_cb = MyCallCallback(current_call)
        current_call.set_callback(call_cb)

        current_call.answer(180)
	current_call.answer(200)
	print "accept call"
	sleep(5)
	current_call.hangup()

        
# Callback to receive events from Call
class MyCallCallback(pj.CallCallback):

    def __init__(self, call=None):
        pj.CallCallback.__init__(self, call)

    # Notification when call state has changed
    def on_state(self):
        global current_call
        
	if self.call.info().state_text == "CONNECTING":
		success = "true"
		#connection.send(success)

        if self.call.info().state == pj.CallState.DISCONNECTED:
            current_call = None
            print 'Current call is', current_call

    # Notification when call's media state has changed.
    def on_media_state(self):
        if self.call.info().media_state == pj.MediaState.ACTIVE:
            # Connect the call to sound device
            call_slot = self.call.info().conf_slot
            pj.Lib.instance().conf_connect(call_slot, 0)
            pj.Lib.instance().conf_connect(0, call_slot)
	    #connection.send('establish connection')

            print "Media is now active"


        else:
            print "Media is inactive"


        
lib = pj.Lib()

try:
	for res in socket.getaddrinfo(HOST, PORT, socket.AF_UNSPEC, socket.SOCK_STREAM, 0, socket.AI_PASSIVE):
    		af, socktype, proto, canonname, sa = res
    		try:
        		s = socket.socket(af, socktype, proto)
    		except socket.error, msg:
        		s = None
        		continue

		try:
		        s.bind(sa)
		        s.listen(1)
		except socket.error, msg:
			s.close()
		        s = None
		        continue
		break
	
	if s is None:
		print 'could not open socket'
		sys.exit(1)
	
	lib.init(log_cfg = pj.LogConfig(level=LOG_LEVEL, callback=log_cb))


	transport = lib.create_transport(pj.TransportType.UDP, pj.TransportConfig(0))
    	print "\nListening on", transport.info().host, 
    	print "port", transport.info().port, "\n"
    
    # Start the library
    	lib.start()
    	lib.set_null_snd_dev()

    # Create local account
    	acc_cfg = pj.AccountConfig(server, username, password)
    	acc = lib.create_account(acc_cfg, cb=MyAccountCallback())

	if acc.info().reg_status < 700:

    		my_sip_uri = "sip:" + transport.info().host + ":" + str(transport.info().port)

		#connection, addr = s.accept()
		#print 'Connected by', addr
		#connection.send('I am ready')

    		while stop <> "true":
			
			#data = connection.recv(1024)
			#if data == "terminated":
			#	break

			if current_call == None:
				continue
			else:
				print "Incoming call from :", number
				sleep(4)
        

    # Shutdown the library
    		transport = None
    		acc.delete()
    		acc = None
    		lib.destroy()
    		lib = None
	else:
		Regis_status= "Bad"
		print "error when register"

		lib.destroy()
		lib = None
    		acc = None

except pj.Error, e:
    print "Exception: " + str(e)
    lib.destroy()
    lib = None