Hi Jakub, It seems to be and inconsistent state of the session. Did you start the authn flow directly from a Discovery Service Page? This could be a cause. Is there the possibility that the satosa cookies have not been passed by the browser? Il gio 5 ago 2021, 14:40 Jakub Niezabitowski <kuba.michal.n at gmail.com> ha scritto: > Hello, > > We are trying to use Satosa as proxy for Keycloak. After successful > login backend receives attributes and tries to route them to frontend named > Saml2IDP (same name as in the example) but fails: > > [2021-08-05 11:03:50,412] [DEBUG] [satosa.attribute_mapping.to_internal] backend attribute ['sn', 'surname'] mapped to surname > > [2021-08-05 11:03:50,413] [DEBUG] [satosa.backends.saml2._translate_response] [urn:uuid:6e039cb0-5454-4224-987e-1965c623cad9] backend received attributes: > > { > > "sn": [ > > "czterna" > > ] > > } > > [2021-08-05 11:03:50,413] [DEBUG] [satosa.routing.frontend_routing] [urn:uuid:6e039cb0-5454-4224-987e-1965c623cad9] Routing to frontend: Saml2IDP > > [2021-08-05 11:03:50,413] [ERROR] [satosa.base.run] [urn:uuid:6e039cb0-5454-4224-987e-1965c623cad9] Uncaught exception > > Traceback (most recent call last): > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 240, in run > > resp = self._run_bound_endpoint(context, spec) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 180, in _run_bound_endpoint > > return spec(context) > > File "/usr/local/lib/python3.6/site-packages/satosa/backends/saml2.py", line 350, in authn_response > > return self.auth_callback_func(context, self._translate_response(authn_response, context.state)) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 149, in _auth_resp_callback_func > > context, internal_response) > > File "/usr/local/lib/python3.6/site-packages/satosa/micro_services/attribute_modifications.py", line 17, in process > > return super().process(context, data) > > File "/usr/local/lib/python3.6/site-packages/satosa/micro_services/base.py", line 33, in process > > return self.next(context, data) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 120, in _auth_resp_finish > > return frontend.handle_authn_response(context, internal_response) > > File "/usr/local/lib/python3.6/site-packages/satosa/frontends/saml2.py", line 86, in handle_authn_response > > return self._handle_authn_response(context, internal_response, self.idp) > > File "/usr/local/lib/python3.6/site-packages/satosa/frontends/saml2.py", line 317, in _handle_authn_response > > request_state = self.load_state(context.state) > > File "/usr/local/lib/python3.6/site-packages/satosa/frontends/saml2.py", line 149, in load_state > > state_data = state[self.name] > > File "/usr/lib64/python3.6/collections/__init__.py", line 991, in __getitem__ > > raise KeyError(key) > > KeyError: 'Saml2IDP' > > [2021-08-05 11:03:50,416] [ERROR] [satosa.proxy_server.__call__] Unknown error > > Traceback (most recent call last): > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 240, in run > > resp = self._run_bound_endpoint(context, spec) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 180, in _run_bound_endpoint > > return spec(context) > > File "/usr/local/lib/python3.6/site-packages/satosa/backends/saml2.py", line 350, in authn_response > > return self.auth_callback_func(context, self._translate_response(authn_response, context.state)) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 149, in _auth_resp_callback_func > > context, internal_response) > > File "/usr/local/lib/python3.6/site-packages/satosa/micro_services/attribute_modifications.py", line 17, in process > > return super().process(context, data) > > File "/usr/local/lib/python3.6/site-packages/satosa/micro_services/base.py", line 33, in process > > return self.next(context, data) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 120, in _auth_resp_finish > > return frontend.handle_authn_response(context, internal_response) > > File "/usr/local/lib/python3.6/site-packages/satosa/frontends/saml2.py", line 86, in handle_authn_response > > return self._handle_authn_response(context, internal_response, self.idp) > > File "/usr/local/lib/python3.6/site-packages/satosa/frontends/saml2.py", line 317, in _handle_authn_response > > request_state = self.load_state(context.state) > > File "/usr/local/lib/python3.6/site-packages/satosa/frontends/saml2.py", line 149, in load_state > > state_data = state[self.name] > > File "/usr/lib64/python3.6/collections/__init__.py", line 991, in __getitem__ > > raise KeyError(key) > > KeyError: 'Saml2IDP' > > The above exception was the direct cause of the following exception: > > Traceback (most recent call last): > > File "/usr/local/lib/python3.6/site-packages/satosa/proxy_server.py", line 118, in __call__ > > resp = self.run(context) > > File "/usr/local/lib/python3.6/site-packages/satosa/base.py", line 258, in run > > raise SATOSAUnknownError("Unknown error") from err > > satosa.exception.SATOSAUnknownError: Unknown error > > > Thank you in advance for any help! 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