Twisted SIP protocol example

sip_example.py

from twisted.internet import reactor

from twisted.protocols import sip
from twisted.internet.protocol import ServerFactory

class SipProxy(sip.Proxy):
  def __init__(self):
  sip.Proxy.__init__(self,host='192.168.1.3',port=5060)
  self.tries=0
  def handle_request(self,message,addr):
  print message.toString()
  print dir(message)
  if message.method=='ACK':return
  r = self.responseFromRequest(301,message)
  r.addHeader("Contact","sip:192.168.1.100:5061")
  r.creationFinished()
  self.deliverResponse(r)
  print r.toString()
  print addr
  self.tries+=1

class sipfactory(ServerFactory):
  protocol=SipProxy

reactor.listenUDP(5060,SipProxy(),'192.168.1.3')
reactor.run()