def test_stateless_proxy_forward_to_ua():
def check_rroute_fun(uri):
return uri == Uri(this_proxy_uri)
bob_uri = 'sip:[email protected]'
this_proxy_uri = 'sip:this.proxy.org'
msg = 'INVITE ' + bob_uri + ' SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 70' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nRoute: <' + this_proxy_uri + '>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
proxy_opts = ProxyOptionsDetails(check_rroute_function=check_rroute_fun)
options = ValidationOptions(proxy=proxy_opts)
sip_msg = process_route_info(raw_message(msg), options)
target = Uri(bob_uri)
sip_msg, opts = CommonProxy.forward_request(target, sip_msg, proxy_opts)
assert target == opts.nexthop
assert isinstance(sip_msg.find(ROUTE_HEADER), NotFound)
def test_process_route_info_loose_routing():
def check_rroute_fun(uri):
return Uri(this_proxy_uri) == uri
bob_uri = 'sip:[email protected]'
this_proxy_uri = 'sip:this.proxy.org'
next_proxy_uri = 'sip:next.proxy.org'
msg = 'INVITE ' + bob_uri + ' SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 70' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nRoute: <' + this_proxy_uri + '>' + \
'\r\nRoute: <' + next_proxy_uri + '>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
options = ValidationOptions(proxy=ProxyOptionsDetails(check_rroute_function=check_rroute_fun))
sip_msg = process_route_info(raw_message(msg), options)
sip_msg_rebuilt = rebuild_sip_msg(sip_msg)
assert sip_msg_rebuilt.ruri == Uri(bob_uri)
expected_route_hdr = RouteHeader(next_proxy_uri)
assert expected_route_hdr == sip_msg_rebuilt.get(ROUTE_HEADER)
def test_forward_request_record_route_append():
bob_uri = 'sip:[email protected]'
another_proxy_uri = 'sip:another.proxy.org;lr'
this_proxy_uri = Uri('sip:this.proxy.org')
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nRecord-Route: <' + another_proxy_uri + '>' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
proxy_opts = ProxyOptionsDetails(record_route_uri=this_proxy_uri,
check_rroute_function=lambda x: this_proxy_uri == x)
sip_msg, opts = forward_request(bob_uri, raw_message(msg), proxy_opts)
sip_msg = rebuild_sip_msg(sip_msg)
record_route_hdr = sip_msg.get(RECORD_ROUTE_HEADER)
first_rr_uri = record_route_hdr.first.uri
last_rr_uri = record_route_hdr.last.uri
this_proxy_uri.set_param('lr', True)
assert first_rr_uri == this_proxy_uri
assert last_rr_uri == Uri(another_proxy_uri)
def test_forward_request_add_maxforwars():
bob_uri = 'sip:[email protected]'
msg = 'INVITE ' + bob_uri + ' SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
sip_msg, options = forward_request(bob_uri, raw_message(msg), ProxyOptionsDetails())
sip_msg = rebuild_sip_msg(sip_msg)
assert sip_msg.get(MAXFORWARDS_HEADER).maxforwards == 70
def test_proxy_params_check_no_validate():
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 70' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
this_proxy_uri = Uri('sip:this.proxy.org')
options = ValidationOptions(proxy=ProxyOptionsDetails(record_route_uri=this_proxy_uri, no_validate=True))
# No exceptions raised:
process_route_info(raw_message(msg), options)
def test_request_validation_proxy_require_all_supported():
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 70' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nProxy-Require: gin' + \
'\r\n\r\n'
supported = OptTagListHeader.from_list([OptionTag('gin')])
options = ValidationOptions(proxy=ProxyOptionsDetails(supported=supported))
# no errors while validating:
response = CommonProxy.validate_request(raw_message(msg), options)
assert isinstance(response, SipMessage)
def test_forward_request_no_rr_sips_to_sips():
bob_uri = 'sips:[email protected]'
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
raw_msg = raw_message(msg)
raw_msg.source = tls_source
sip_msg, opts = forward_request(bob_uri, raw_msg, ProxyOptionsDetails())
sip_msg = rebuild_sip_msg(sip_msg)
assert isinstance(sip_msg.find(RECORD_ROUTE_HEADER), NotFound)
def test_forward_request_invalid_maxforwars():
bob_uri = 'sip:[email protected]'
msg = 'INVITE ' + bob_uri + ' SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: x' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
sip_msg = SipMessage.parse(raw_message(msg), [])
with pytest.raises(SipHeaderError) as exc:
CommonProxy.forward_request(Uri(bob_uri), sip_msg, ProxyOptionsDetails())
assert 'max-forwards' in str(exc.value).lower()
def test_process_route_info_no_routes_strict_route():
bob_uri = 'sip:[email protected]'
msg = 'INVITE ' + bob_uri + ' SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 70' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
options = ValidationOptions(proxy=ProxyOptionsDetails(check_rroute_function=lambda x: True))
sip_msg = process_route_info(raw_message(msg), options)
sip_msg = rebuild_sip_msg(sip_msg)
assert sip_msg.ruri == Uri(bob_uri)
assert isinstance(sip_msg.find(ROUTE_HEADER), NotFound)
def test_forward_request_to_loose_router():
bob_uri = 'sip:[email protected]'
loose_route_uri = 'sip:stict.proxy.org;lr'
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nRoute: <' + loose_route_uri + '>' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
sip_msg, opts = forward_request(bob_uri, raw_message(msg), ProxyOptionsDetails())
expected_nexthop = Uri(loose_route_uri)
assert opts.nexthop == expected_nexthop
sip_msg = rebuild_sip_msg(sip_msg)
assert sip_msg.ruri == Uri(bob_uri)
def test_forward_request_no_rr_sip_to_sips():
bob_uri = 'sips:[email protected]'
another_proxy_uri = 'sip:another.proxy.org;lr'
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nRecord-Route: <' + another_proxy_uri + '>' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
raw_msg = raw_message(msg)
raw_msg.source = udp_source
with pytest.raises(CommonProxyError) as exc:
forward_request(bob_uri, raw_msg, ProxyOptionsDetails())
assert 'sips transform' in str(exc.value).lower()
def test_request_validation_proxy_require_no_required():
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 70' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nProxy-Require: gin' + \
'\r\n\r\n'
unsupported = OptTagListHeader.from_list([OptionTag('gin')])
supported = OptTagListHeader.from_list([OptionTag('100rel'), OptionTag('timers')])
options = ValidationOptions(proxy=ProxyOptionsDetails(supported=supported))
response = CommonProxy.validate_request(raw_message(msg), options)
assert response.status == 420
assert response.reason.lower() == 'bad extension'
resp_raw_message = raw_message(response.serialize())
sip_response = SipMessage.parse(resp_raw_message, [UNSUPPORTED_HEADER])
assert sip_response.get(UNSUPPORTED_HEADER) == unsupported
def test_forward_request_record_route_append_sips():
# If the Request-URI contains a SIPS URI, or the topmost Route header field value (after the post processing of
# bullet 6) contains a SIPS URI, the URI placed into the Record-Route header field MUST be a SIPS URI.
bob_uri = 'sips:[email protected]'
another_proxy_uri = 'sip:another.proxy.org;lr'
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nRecord-Route: <' + another_proxy_uri + '>' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
this_proxy_uri = Uri('sips:this.proxy.org')
proxy_opts = ProxyOptionsDetails(record_route_uri=this_proxy_uri,
check_rroute_function=lambda x: x == this_proxy_uri)
forward_request(bob_uri, raw_message(msg), proxy_opts)
def test_request_validation_maxforwards_is_zero_options_reply():
msg = 'OPTIONS sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nMax-Forwards: 0' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 OPTIONS' + \
'\r\n\r\n'
allow_methods = AllowHeader(MethodSet([INVITE, ACK, OPTIONS, CANCEL, BYE]))
supported_list = OptTagListHeader.from_list([OptionTag('100rel'), OptionTag('timers')])
options = ValidationOptions(validate=ValidationOptionsDetails(reply_on_options=True),
proxy=ProxyOptionsDetails(supported=supported_list, allow=allow_methods))
response = CommonProxy.validate_request(raw_message(msg), options)
assert response.status == 200
assert response.reason == 'OK'
resp_raw_message = raw_message(response.serialize())
sip_response = SipMessage.parse(resp_raw_message, [ALLOW_HEADER, SUPPORTED_HEADER])
assert allow_methods == sip_response.get(ALLOW_HEADER)
assert sip_response.get(SUPPORTED_HEADER) == supported_list
def test_forward_request_no_rr_sips_to_sip():
# If the Request-URI contains a SIPS URI, or the topmost Route header field value (after the post processing of
# bullet 6) contains a SIPS URI, the URI placed into the Record-Route header field MUST be a SIPS URI.
bob_uri = 'sip:[email protected]'
another_proxy_uri = 'sip:another.proxy.org;lr'
msg = 'INVITE sip:[email protected] SIP/2.0' + \
'\r\nVia: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bK776asdhds' + \
'\r\nVia: SIP/2.0/UDP bigbox3.site3.atlanta.com' + \
'\r\nTo: Bob <sip:[email protected]>' + \
'\r\nFrom: Alice <sip:[email protected]>;tag=1928301774' + \
'\r\nCall-ID: [email protected]' + \
'\r\nCSeq: 314159 INVITE' + \
'\r\nContact: <sip:[email protected]>' + \
'\r\nContent-Type: application/sdp' + \
'\r\nRecord-Route: <' + another_proxy_uri + '>' + \
'\r\nContent-Length: 4' + \
'\r\n\r\nTest'
raw_msg = raw_message(msg)
raw_msg.source = tls_source
with pytest.raises(CommonProxyError) as exc:
forward_request(bob_uri, raw_msg, ProxyOptionsDetails())
assert 'sip transform' in str(exc.value).lower()