def start_new_dialog(self):
""" Refresh the SIP dialog specific parameters """
self.parameters.update({
"callId": util.randomCallID(),
"fromTag": util.randomTag(),
"viaBranch": util.randomBranch(),
"epid": lambda x=6: "SC" + util.randStr(x),
"cseq": 1
})
def make_response_to(self, other):
""" RFC 3261 Section 8.2.6.2 Headers and Tags"""
self.set_dialog_from(other)
self.via_branch = other.via_branch
self["From"] = other["From"]
self["Call-ID"] = other["Call-ID"]
self["Via"] = other["Via"]
if other.to_tag:
self["To"] = other["To"]
else:
self.to_tag = util.randomTag()
def start_new_dialog(self):
""" Refresh the SIP dialog specific parameters """
dialog = {
"Call-ID": util.randomCallID(),
"from_tag": util.randomTag(),
"to_tag": ""
# "epid": lambda x=6: "SC" + util.randStr(x),
}
self.current_dialog = dialog
self.dialogs.append(dialog)
self.requests.append([])
return dialog
def notify_after_subscribe(sip_ep, notify_dialog):
cd = dict(notify_dialog)
subscribe = sip_ep.get_last_message_in(cd)
cd["to_tag"] = util.randomTag()
sip_ep.reply(message_string=message["200_OK_1"], dialog=cd)
cd = sip_ep.current_dialog
notify_dialog = {"Call-ID": cd["Call-ID"],
"from_tag": cd["to_tag"],
"to_tag": cd["from_tag"]}
subscribe.set_dialog_from(notify_dialog)
sip_ep.save_message(subscribe)
sip_ep.send(message_string=message["Notify_terminated_1"], expected_response="200 OK", dialog=notify_dialog)
def make_response_to(self, other, dialog={}):
""" RFC 3261 Section 8.2.6.2 Headers and Tags
:dict dialog: The current sip dialog we are in, represented by
a dictionary with keys as in the return type of self.get_dialog()
"""
self.set_dialog_from(other)
self.via_branch = other.via_branch
self["From"] = other["From"]
self["Call-ID"] = other["Call-ID"]
self["Via"] = other["Via"]
self["To"] = other["To"]
if not other.to_tag:
# This is useful when we make a response to an initial invite.
# The invite has no to tag. But we made one for Trying
# and now we must use it for Ringing as well.
if "to_tag" in dialog and dialog["to_tag"]:
self.to_tag = dialog["to_tag"]
else:
self.to_tag = util.randomTag()
return self.get_dialog()
import sys
sys.path.append("..")
from common.client import TCPClient
from sip.SipParser import parseBytes, prepareMessage
from sip.messages import message
from common import util
parameters = {
"dest_ip": "10.2.0.22",
"dest_port": 5060,
"transport": "tcp",
"callId": util.randomCallID(),
"user": "******",
"fromTag": util.randomTag(),
"sourceIP": util.getLocalIP(),
"sourcePort": 5080,
"viaBranch": util.randomBranch(),
"epid": "SC" + util.randHex(3),
"expires": "360"
}
# Open the connection
C = TCPClient(parameters["sourceIP"], parameters["sourcePort"])
C.connect(parameters["dest_ip"], parameters["dest_port"])
# Register
m = prepareMessage(message["Register_1"], parameters)
print(m)
C.send(m)