def __init__(self, buf=None):
self.headers = []
if buf == None:
return
# Locate a body
self.__mbody = None
for bdel in ('\r\n\r\n', '\r\r', '\n\n'):
boff = buf.find(bdel)
if boff != -1:
self.__mbody = buf[boff + len(bdel):]
buf = buf[:boff]
if len(self.__mbody) == 0:
self.__mbody = None
break
# Split message into lines and put aside start line
lines = buf.splitlines()
self.setSL(lines[0])
i = 2
while i < len(lines):
if lines[i][0] in (' ', '\t'):
lines[i - 1] += ' ' + lines[i].strip()
del lines[i]
else:
i += 1
# Parse headers
self.__content_type = None
self.__content_length = None
header_names = []
for line in lines[1:]:
try:
header = SipHeader(line, fixname=True)
if header.name == 'content-type':
self.__content_type = header
elif header.name == 'content-length':
self.__content_length = header
else:
self.headers.append(header)
header_names.append(header.name)
except ESipHeaderCSV as einst:
for body in einst.bodys:
header = SipHeader(name=einst.name, bodys=body)
if header.name == 'content-type':
self.__content_type = header
elif header.name == 'content-length':
self.__content_length = header
else:
self.headers.append(header)
header_names.append(header.name)
except ESipHeaderIgnore:
continue
if 'via' not in header_names:
raise Exception('Via HF is missed')
if 'to' not in header_names:
raise Exception('To HF is missed')
if 'from' not in header_names:
raise Exception('From HF is missed')
if 'cseq' not in header_names:
raise Exception('CSeq HF is missed')
def gotreply(self, resp):
if self.dead:
return
if resp.scode < 200:
return
if resp.scode >= 200 and resp.scode < 300 and resp.reason != 'Auth Failed':
contact = None
if resp.countHFs('contact') > 0:
contact = resp.getHFBody('contact')
if contact != None and 'expires' in contact.address.params:
tout = int(contact.address.params['expires'])
elif resp.countHFs('expires') > 0:
tout = resp.getHFBody('expires').getNum()
else:
tout = 180
timer = Timeout(self.doregister, tout)
if self.rok_cb != None:
self.rok_cb(timer.etime.realt, contact, self.cb_arg)
self.atries = 0
return
if resp.scode == 401 and resp.countHFs('www-authenticate') != 0 and \
self.user != None and self.passw != None and self.atries < 3:
challenge = resp.getHFBody('www-authenticate')
auth = SipAuthorization(realm=challenge.getRealm(),
nonce=challenge.getNonce(),
method='REGISTER',
uri=str(self.rmsg.ruri),
username=self.user,
password=self.passw)
for authorization in self.rmsg.getHFs('authorization'):
self.rmsg.removeHeader(authorization)
self.rmsg.appendHeader(SipHeader(name='authorization', body=auth))
self.atries += 1
self.doregister()
return
if resp.scode == 407 and resp.countHFs('proxy-authenticate') != 0 and \
self.user != None and self.passw != None and self.atries < 3:
challenge = resp.getHFBody('proxy-authenticate')
auth = SipProxyAuthorization(realm=challenge.getRealm(),
nonce=challenge.getNonce(),
method='REGISTER',
uri=str(self.rmsg.ruri),
username=self.user,
password=self.passw)
for authorization in self.rmsg.getHFs('proxy-authorization'):
self.rmsg.removeHeader(authorization)
self.rmsg.appendHeader(
SipHeader(name='proxy-authorization', body=auth))
self.atries += 1
self.doregister()
return
if self.rfail_cb != None:
self.rfail_cb(resp.getSL(), self.cb_arg)
Timeout(self.doregister, 60)
self.atries = 0
def recvRequest(self, req):
if req.getHFBody('to').getTag() != None:
# Request within dialog, but no such dialog
return (req.genResponse(481,
'Call Leg/Transaction Does Not Exist'),
None, None)
if req.getMethod() == 'INVITE':
# New dialog
if req.countHFs('via') > 1:
via = req.getHFBody('via', 1)
else:
via = req.getHFBody('via', 0)
remote_ip = via.getTAddr()[0]
source = req.getSource()
# First check if request comes from IP that
# we want to accept our traffic from
if '_accept_ips' in self.global_config and \
not source[0] in self.global_config['_accept_ips']:
resp = req.genResponse(403, 'Forbidden')
return (resp, None, None)
challenge = None
if self.global_config['auth_enable']:
# Prepare challenge if no authorization header is present.
# Depending on configuration, we might try remote ip auth
# first and then challenge it or challenge immediately.
if self.global_config['digest_auth'] and \
req.countHFs('authorization') == 0:
challenge = SipHeader(name='www-authenticate')
challenge.getBody().realm = req.getRURI().host
# Send challenge immediately if digest is the
# only method of authenticating
if challenge != None and self.global_config.getdefault(
'digest_auth_only', False):
resp = req.genResponse(401, 'Unauthorized')
resp.appendHeader(challenge)
return (resp, None, None)
pass_headers = []
for header in self.global_config['_pass_headers']:
hfs = req.getHFs(header)
if len(hfs) > 0:
pass_headers.extend(hfs)
cc = CallController(remote_ip, source, self.global_config,
pass_headers)
cc.challenge = challenge
rval = cc.uaA.recvRequest(req)
self.ccmap.append(cc)
return rval
if req.getMethod() in ('NOTIFY', 'PING'):
# Whynot?
return (req.genResponse(200, 'OK'), None, None)
return (req.genResponse(501, 'Not Implemented'), None, None)
def recvRequest(self, req):
if req.getHFBody('to').getTag() != None:
# Request within dialog, but no such dialog
return (req.genResponse(481, 'Call Leg/Transaction Does Not Exist'), None, None)
if req.getMethod() == 'INVITE':
# New dialog
if req.countHFs('via') > 1:
via = req.getHFBody('via', 1)
else:
via = req.getHFBody('via', 0)
remote_ip = via.getTAddr()[0]
source = req.getSource()
# First check if request comes from IP that
# we want to accept our traffic from
if self.global_config.has_key('_accept_ips') and \
not source[0] in self.global_config['_accept_ips']:
resp = req.genResponse(403, 'Forbidden')
return (resp, None, None)
challenge = None
if self.global_config['auth_enable']:
# Prepare challenge if no authorization header is present.
# Depending on configuration, we might try remote ip auth
# first and then challenge it or challenge immediately.
if self.global_config['digest_auth'] and \
req.countHFs('authorization') == 0:
challenge = SipHeader(name = 'www-authenticate')
challenge.getBody().realm = req.getRURI().host
# Send challenge immediately if digest is the
# only method of authenticating
if challenge != None and self.global_config.getdefault('digest_auth_only', False):
resp = req.genResponse(401, 'Unauthorized')
resp.appendHeader(challenge)
return (resp, None, None)
pass_headers = []
for header in self.global_config['_pass_headers']:
hfs = req.getHFs(header)
if len(hfs) > 0:
pass_headers.extend(hfs)
cc = CallController(remote_ip, source, self.global_config, pass_headers)
cc.challenge = challenge
rval = cc.uaA.recvRequest(req)
self.ccmap.append(cc)
return rval
if req.getMethod() in ('NOTIFY', 'PING'):
# Whynot?
return (req.genResponse(200, 'OK'), None, None)
return (req.genResponse(501, 'Not Implemented'), None, None)
def sendUasResponse(self, scode, reason, body = None, contacts = None, \
reason_rfc3326 = None, extra_headers = None, ack_wait = False):
uasResp = self.uasResp.getCopy()
uasResp.setSCode(scode, reason)
uasResp.setBody(body)
if contacts != None:
for contact in contacts:
uasResp.appendHeader(SipHeader(name='contact', body=contact))
if reason_rfc3326 != None:
uasResp.appendHeader(SipHeader(body=reason_rfc3326))
if extra_headers != None:
uasResp.appendHeaders(extra_headers)
if ack_wait:
ack_cb = self.recvACK
else:
ack_cb = None
self.global_config['_sip_tm'].sendResponse(uasResp, ack_cb = ack_cb, \
lossemul = self.uas_lossemul)
def cancelTransaction(self, t, reason=None):
# If we got at least one provisional reply then (state == RINGING)
# then start CANCEL transaction, otherwise deffer it
if t.state != RINGING:
t.cancelPending = True
else:
if reason != None:
t.cancel.appendHeader(SipHeader(body=reason))
self.newTransaction(t.cancel, userv=t.userv)
def recvRequest(self, req):
via0 = SipVia()
via0.genBranch()
via1 = req.getHF('via')
req.insertHeaderBefore(via1, SipHeader(name='via', body=via0))
req.setTarget(self.destination)
print(req)
self.global_config['_sip_tm'].newTransaction(req, self.recvResponse)
return (None, None, None)
def genRequest(self, method, body = None, nonce = None, realm = None, SipXXXAuthorization = SipAuthorization, \
reason = None, max_forwards = None):
if self.outbound_proxy != None:
target = self.outbound_proxy
else:
target = self.rAddr
if max_forwards != None:
max_forwards_hf = SipMaxForwards(number=max_forwards)
else:
max_forwards_hf = None
req = SipRequest(method=method,
ruri=self.rTarget,
to=self.rUri,
fr0m=self.lUri,
cseq=self.lCSeq,
callid=self.cId,
contact=self.lContact,
routes=self.routes,
target=target,
cguid=self.cGUID,
user_agent=self.local_ua,
maxforwards=max_forwards_hf)
if nonce != None and realm != None and self.username != None and self.password != None:
auth = SipXXXAuthorization(realm=realm,
nonce=nonce,
method=method,
uri=str(self.rTarget),
username=self.username,
password=self.password)
req.appendHeader(SipHeader(body=auth))
if body != None:
req.setBody(body)
if self.extra_headers != None:
req.appendHeaders(self.extra_headers)
if reason != None:
req.appendHeader(SipHeader(body=reason))
self.reqs[self.lCSeq] = req
return req
def rDone(self, results):
# Check that we got necessary result from Radius
if len(results) != 2 or results[1] != 0:
if isinstance(self.uaA.state, UasStateTrying):
if self.challenge != None:
event = CCEventFail((401, 'Unauthorized'))
event.extra_header = self.challenge
else:
event = CCEventFail((403, 'Auth Failed'))
self.uaA.recvEvent(event)
self.state = CCStateDead
return
if self.global_config['acct_enable']:
self.acctA = RadiusAccounting(self.global_config, 'answer', \
send_start = self.global_config['start_acct_enable'], lperiod = \
self.global_config.getdefault('alive_acct_int', None))
self.acctA.ms_precision = self.global_config.getdefault('precise_acct', False)
self.acctA.setParams(self.username, self.cli, self.cld, self.cGUID, self.cId, self.remote_ip)
else:
self.acctA = FakeAccounting()
# Check that uaA is still in a valid state, send acct stop
if not isinstance(self.uaA.state, UasStateTrying):
self.acctA.disc(self.uaA, time(), 'caller')
return
cli = [x[1][4:] for x in results[0] if x[0] == 'h323-ivr-in' and x[1].startswith('CLI:')]
if len(cli) > 0:
self.cli = cli[0]
if len(self.cli) == 0:
self.cli = None
caller_name = [x[1][5:] for x in results[0] if x[0] == 'h323-ivr-in' and x[1].startswith('CNAM:')]
if len(caller_name) > 0:
self.caller_name = caller_name[0]
if len(self.caller_name) == 0:
self.caller_name = None
credit_time = [x for x in results[0] if x[0] == 'h323-credit-time']
if len(credit_time) > 0:
global_credit_time = int(credit_time[0][1])
else:
global_credit_time = None
if not self.global_config.has_key('static_route'):
routing = [x for x in results[0] if x[0] == 'h323-ivr-in' and x[1].startswith('Routing:')]
if len(routing) == 0:
self.uaA.recvEvent(CCEventFail((500, 'Internal Server Error (2)')))
self.state = CCStateDead
return
routing = [x[1][8:].split(';') for x in routing]
else:
routing = [self.global_config['static_route'].split(';')]
rnum = 0
for route in routing:
rnum += 1
if route[0].find('@') != -1:
cld, host = route[0].split('@', 1)
if len(cld) == 0:
# Allow CLD to be forcefully removed by sending `Routing:@host' entry,
# as opposed to the Routing:host, which means that CLD should be obtained
# from the incoming call leg.
cld = None
else:
cld = self.cld
host = route[0]
credit_time = global_credit_time
expires = None
no_progress_expires = None
forward_on_fail = False
user = None
passw = None
cli = self.cli
parameters = {}
parameters['extra_headers'] = self.pass_headers[:]
for a, v in [x.split('=', 1) for x in route[1:]]:
if a == 'credit-time':
credit_time = int(v)
if credit_time < 0:
credit_time = None
elif a == 'expires':
expires = int(v)
if expires < 0:
expires = None
elif a == 'hs_scodes':
parameters['huntstop_scodes'] = tuple([int(x) for x in v.split(',') if len(x.strip()) > 0])
elif a == 'np_expires':
no_progress_expires = int(v)
if no_progress_expires < 0:
no_progress_expires = None
elif a == 'forward_on_fail':
forward_on_fail = True
elif a == 'auth':
user, passw = v.split(':', 1)
elif a == 'cli':
cli = v
if len(cli) == 0:
cli = None
elif a == 'cnam':
caller_name = unquote(v)
if len(caller_name) == 0:
caller_name = None
parameters['caller_name'] = caller_name
elif a == 'ash':
ash = SipHeader(unquote(v))
parameters['extra_headers'].append(ash)
elif a == 'rtpp':
parameters['rtpp'] = (int(v) != 0)
elif a == 'gt':
timeout, skip = v.split(',', 1)
parameters['group_timeout'] = (int(timeout), rnum + int(skip))
elif a == 'op':
host_port = v.split(':', 1)
if len(host_port) == 1:
parameters['outbound_proxy'] = (v, 5060)
else:
parameters['outbound_proxy'] = (host_port[0], int(host_port[1]))
else:
parameters[a] = v
if self.global_config.has_key('max_credit_time'):
if credit_time == None or credit_time > self.global_config['max_credit_time']:
credit_time = self.global_config['max_credit_time']
if credit_time == 0 or expires == 0:
continue
self.routes.append((rnum, host, cld, credit_time, expires, no_progress_expires, forward_on_fail, user, \
passw, cli, parameters))
#print 'Got route:', host, cld
if len(self.routes) == 0:
self.uaA.recvEvent(CCEventFail((500, 'Internal Server Error (3)')))
self.state = CCStateDead
return
self.state = CCStateARComplete
self.placeOriginate(self.routes.pop(0))
def __init__(self, sroute = None, cself = None):
if cself != None:
self.rnum = cself.rnum
self.addrinfo = cself.addrinfo
self.cld = cself.cld
self.cld_set = cself.cld_set
self.hostport = cself.hostport
self.hostonly = cself.hostonly
self.credit_time = cself.credit_time
self.crt_set = cself.crt_set
self.expires = cself.expires
self.no_progress_expires = cself.no_progress_expires
self.no_reply_expires = cself.no_reply_expires
self.forward_on_fail = cself.forward_on_fail
self.user = cself.user
self.passw = cself.passw
self.cli = cself.cli
self.cli_set = cself.cli_set
self.params = dict(cself.params)
self.ainfo = cself.ainfo
if cself.extra_headers != None:
self.extra_headers = tuple([x.getCopy() for x in cself.extra_headers])
return
route = sroute.split(';')
if route[0].find('@') != -1:
self.cld, self.hostport = route[0].split('@', 1)
if len(self.cld) == 0:
# Allow CLD to be forcefully removed by sending `Routing:@host' entry,
# as opposed to the Routing:host, which means that CLD should be obtained
# from the incoming call leg.
self.cld = None
self.cld_set = True
else:
self.hostport = route[0]
if not self.hostport.startswith('['):
hostport = self.hostport.split(':', 1)
af = 0
self.hostonly = hostport[0]
else:
hostport = self.hostport[1:].split(']', 1)
if len(hostport) > 1:
if len(hostport[1]) == 0:
del hostport[1]
else:
hostport[1] = hostport[1][1:]
af = AF_INET6
self.hostonly = '[%s]' % hostport[0]
if len(hostport) == 1:
port = SipConf.default_port
else:
port = int(hostport[1])
self.ainfo = getaddrinfo(hostport[0], port, af, SOCK_STREAM)
self.params = {}
extra_headers = []
for a, v in [x.split('=', 1) for x in route[1:]]:
if a == 'credit-time':
self.credit_time = int(v)
if self.credit_time < 0:
self.credit_time = None
self.crt_set = True
elif a == 'expires':
self.expires = int(v)
if self.expires < 0:
self.expires = None
elif a == 'hs_scodes':
self.params['huntstop_scodes'] = tuple([int(x) for x in v.split(',') if len(x.strip()) > 0])
elif a == 'np_expires':
self.no_progress_expires = int(v)
if self.no_progress_expires < 0:
self.no_progress_expires = None
elif a == 'nr_expires':
self.no_reply_expires = int(v)
if self.no_reply_expires < 0:
self.no_reply_expires = None
elif a == 'forward_on_fail':
self.forward_on_fail = True
elif a == 'auth':
self.user, self.passw = v.split(':', 1)
elif a == 'cli':
self.cli = v
if len(self.cli) == 0:
self.cli = None
self.cli_set = True
elif a == 'cnam':
caller_name = unquote(v)
if len(caller_name) == 0:
caller_name = None
self.params['caller_name'] = caller_name
elif a == 'ash':
ash = SipHeader(unquote(v))
extra_headers.append(ash)
elif a == 'rtpp':
self.params['rtpp'] = (int(v) != 0)
elif a == 'op':
host_port = v.split(':', 1)
if len(host_port) == 1:
self.params['outbound_proxy'] = (v, 5060)
else:
self.params['outbound_proxy'] = (host_port[0], int(host_port[1]))
else:
self.params[a] = v
if len(extra_headers) > 0:
self.extra_headers = tuple(extra_headers)
def setWarning(self, eistr):
self.warning = SipHeader(body=SipWarning(text=eistr))
def __init__(self, buf = None, method = None, ruri = None, sipver = 'SIP/2.0', to = None, fr0m = None, via = None, cseq = None, \
callid = None, maxforwards = None, body = None, contact = None, routes = (), target = None, cguid = None,
user_agent = None, expires = None):
SipMsg.__init__(self, buf)
if buf != None:
try:
SipMsg.init_body(self)
except ESipParseException as e:
try:
e.sip_response = self.genResponse(
400, 'Bad Request - %s' % str(e))
except Exception as e1:
print('BUG: Double exception, should not be happening:\n',
str(e1))
raise e
return
self.method = method
self.ruri = ruri
if target == None:
if len(routes) == 0:
self.setTarget(self.ruri.getAddr())
else:
self.setTarget(routes[0].getAddr())
else:
self.setTarget(target)
self.sipver = sipver
self.appendHeader(SipHeader(name='via', body=via))
if via == None:
self.getHFBody('via').genBranch()
self.appendHeaders([SipHeader(name='route', body=x) for x in routes])
self.appendHeader(SipHeader(name='max-forwards', body=maxforwards))
self.appendHeader(SipHeader(name='from', body=fr0m))
if to == None:
to = SipTo(address=SipAddress(url=ruri))
self.appendHeader(SipHeader(name='to', body=to))
self.appendHeader(SipHeader(name='call-id', body=callid))
self.appendHeader(
SipHeader(name='cseq', body=SipCSeq(cseq=cseq, method=method)))
if contact != None:
self.appendHeader(SipHeader(name='contact', body=contact))
if expires == None and method == 'INVITE':
expires = SipHeader(name='expires')
self.appendHeader(expires)
elif expires != None:
expires = SipHeader(name='expires', body=expires)
self.appendHeader(expires)
if user_agent != None:
self.user_agent = user_agent
self.appendHeader(SipHeader(name='user-agent', bodys=user_agent))
else:
self.appendHeader(SipHeader(name='user-agent'))
if cguid != None:
self.appendHeader(SipHeader(name='cisco-guid', body=cguid))
self.appendHeader(SipHeader(name='h323-conf-id', body=cguid))
if body != None:
self.setBody(body)
def incomingResponse(self, msg, t, checksum):
# In those two states upper level already notified, only do ACK retransmit
# if needed
if t.state == TERMINATED:
return
if t.state == TRYING:
# Stop timers
if t.teA != None:
t.teA.cancel()
t.teA = None
if t.state in (TRYING, RINGING):
if t.teB != None:
t.teB.cancel()
t.teB = None
if msg.getSCode()[0] < 200:
# Privisional response - leave everything as is, except that
# change state and reload timeout timer
if t.state == TRYING:
t.state = RINGING
if t.cancelPending:
self.newTransaction(t.cancel, userv=t.userv)
t.cancelPending = False
t.teB = Timeout(self.timerB, t.expires, 1, t)
self.l1rcache[checksum] = SipTMRetransmitO()
if t.resp_cb != None:
if t.cb_ifver == 1:
t.resp_cb(msg)
else:
t.resp_cb(msg, t)
else:
# Final response - notify upper layer and remove transaction
if t.resp_cb != None:
if t.cb_ifver == 1:
t.resp_cb(msg)
else:
t.resp_cb(msg, t)
if t.needack:
# Prepare and send ACK if necessary
fcode = msg.getSCode()[0]
tag = msg.getHFBody('to').getTag()
if tag != None:
t.ack.getHFBody('to').setTag(tag)
rAddr = None
if msg.getSCode()[0] >= 200 and msg.getSCode()[0] < 300:
# Some hairy code ahead
if msg.countHFs('contact') > 0:
rTarget = msg.getHFBody(
'contact').getUrl().getCopy()
else:
rTarget = None
routes = [
x.getCopy() for x in msg.getHFBodys('record-route')
]
routes.reverse()
if len(routes) > 0:
if not routes[0].getUrl().lr:
if rTarget != None:
routes.append(
SipRoute(address=SipAddress(
url=rTarget)))
rTarget = routes.pop(0).getUrl()
rAddr = rTarget.getAddr()
else:
rAddr = routes[0].getAddr()
elif rTarget != None:
rAddr = rTarget.getAddr()
if rTarget != None:
t.ack.setRURI(rTarget)
if rAddr != None:
t.ack.setTarget(rAddr)
t.ack.delHFs('route')
t.ack.appendHeaders(
[SipHeader(name='route', body=x) for x in routes])
if fcode >= 200 and fcode < 300:
t.ack.getHFBody('via').genBranch()
if rAddr == None:
rAddr = t.address
if not t.uack:
self.transmitMsg(t.userv, t.ack, rAddr, checksum,
t.compact)
if t.req_out_cb != None:
t.req_out_cb(t.ack)
else:
t.state = UACK
t.ack_rAddr = rAddr
t.ack_checksum = checksum
self.l1rcache[checksum] = SipTMRetransmitO()
t.teG = Timeout(self.timerG, 64, 1, t)
return
else:
self.l1rcache[checksum] = SipTMRetransmitO()
del self.tclient[t.tid]
t.cleanup()
def recvEvent(self, event):
if isinstance(event, CCEventDisconnect) or isinstance(
event, CCEventFail) or isinstance(event, CCEventRedirect):
#print 'event', event, 'received in the Connected state sending BYE'
redirect = None
if isinstance(event, CCEventDisconnect):
redirect = event.getData()
elif isinstance(event, CCEventRedirect):
redirects = event.getData()
if redirects != None:
redirect = redirects[0]
if redirect != None and self.ua.useRefer:
req = self.ua.genRequest('REFER', reason=event.reason)
self.ua.lCSeq += 1
also = SipReferTo(address=redirect)
req.appendHeader(SipHeader(name='refer-to', body=also))
rby = SipReferredBy(address=SipAddress(
url=self.ua.lUri.getUrl()))
req.appendHeader(SipHeader(name='referred-by', body=rby))
self.ua.global_config['_sip_tm'].newTransaction(req, self.rComplete, \
laddress = self.ua.source_address, compact = self.ua.compact_sip)
else:
req = self.ua.genRequest('BYE', reason=event.reason)
self.ua.lCSeq += 1
if redirect != None:
also = SipAlso(address=redirect)
req.appendHeader(SipHeader(name='also', body=also))
self.ua.global_config['_sip_tm'].newTransaction(req, \
laddress = self.ua.source_address, compact = self.ua.compact_sip)
self.ua.cancelCreditTimer()
self.ua.disconnect_ts = event.rtime
return (UaStateDisconnected, self.ua.disc_cbs, event.rtime,
event.origin)
if isinstance(event, CCEventUpdate):
body = event.getData()
if str(self.ua.lSDP) == str(body):
if self.ua.rSDP != None:
self.ua.equeue.append(CCEventConnect((200, 'OK', self.ua.rSDP.getCopy()), \
rtime = event.rtime, origin = event.origin))
else:
self.ua.equeue.append(CCEventConnect((200, 'OK', None), rtime = event.rtime, \
origin = event.origin))
return None
if body != None and self.ua.on_local_sdp_change != None and body.needs_update:
try:
self.ua.on_local_sdp_change(
body,
lambda x: self.ua.recvEvent(event),
en_excpt=True)
except Exception as e:
event = CCEventFail((400, 'Malformed SDP Body'),
rtime=event.rtime)
event.setWarning(str(e))
self.ua.equeue.append(event)
return None
if event.max_forwards != None:
if event.max_forwards <= 0:
self.ua.equeue.append(
CCEventFail((483, 'Too Many Hops'), rtime=event.rtime))
return None
max_forwards_hf = SipMaxForwards(number=event.max_forwards - 1)
else:
max_forwards_hf = None
req = self.ua.genRequest('INVITE', body, reason = event.reason, \
max_forwards = max_forwards_hf)
self.ua.lCSeq += 1
self.ua.lSDP = body
self.ua.tr = self.ua.global_config['_sip_tm'].newTransaction(req, self.ua.recvResponse, \
laddress = self.ua.source_address, cb_ifver = 2, compact = self.ua.compact_sip)
return (UacStateUpdating, )
if isinstance(event, CCEventInfo):
body = event.getData()
req = self.ua.genRequest('INFO', reason=event.reason)
req.setBody(body)
self.ua.lCSeq += 1
self.ua.global_config['_sip_tm'].newTransaction(req, None, \
laddress = self.ua.source_address, compact = self.ua.compact_sip)
return None
if self.ua.pending_tr != None and isinstance(event, CCEventConnect):
if self.ua.expire_timer != None:
self.ua.expire_timer.cancel()
self.ua.expire_timer = None
code, reason, body = event.getData()
if body != None and self.ua.on_local_sdp_change != None and body.needs_update:
self.ua.on_local_sdp_change(body,
lambda x: self.ua.recvEvent(event))
return None
self.ua.startCreditTimer(event.rtime)
self.ua.connect_ts = event.rtime
self.ua.lSDP = body
self.ua.pending_tr.ack.setBody(body)
self.ua.global_config['_sip_tm'].sendACK(self.ua.pending_tr)
self.ua.pending_tr = None
for callback in self.ua.conn_cbs:
callback(self.ua, event.rtime, self.ua.origin)
return None
#print 'wrong event %s in the Connected state' % event
return None