| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2020, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| import unittest |
| |
| import pexpect |
| import config |
| import thread_cert |
| |
| LEADER = 1 |
| ROUTER = 2 |
| |
| |
| class TestCoapObserve(thread_cert.TestCase): |
| """ |
| Test suite for CoAP Observations (RFC7641). |
| """ |
| |
| SUPPORT_NCP = False |
| |
| TOPOLOGY = { |
| LEADER: { |
| 'mode': 'rdn', |
| 'allowlist': [ROUTER] |
| }, |
| ROUTER: { |
| 'mode': 'rdn', |
| 'allowlist': [LEADER] |
| }, |
| } |
| |
| def _do_notification_test(self, con): |
| self.nodes[LEADER].start() |
| self.simulator.go(5) |
| self.assertEqual(self.nodes[LEADER].get_state(), 'leader') |
| |
| self.nodes[ROUTER].start() |
| self.simulator.go(5) |
| self.assertEqual(self.nodes[ROUTER].get_state(), 'router') |
| |
| mleid = self.nodes[LEADER].get_ip6_address(config.ADDRESS_TYPE.ML_EID) |
| |
| self.nodes[LEADER].coap_start() |
| self.nodes[LEADER].coap_set_resource_path('test') |
| self.nodes[LEADER].coap_set_content('Test123') |
| |
| self.nodes[ROUTER].coap_start() |
| response = self.nodes[ROUTER].coap_observe(mleid, 'test', con=con) |
| |
| first_observe = response['observe'] |
| self.assertIsNotNone(first_observe) |
| self.assertEqual(response['payload'], 'Test123') |
| self.assertEqual(response['source'], mleid) |
| |
| # This should have been emitted already, so should return immediately |
| self.nodes[LEADER].coap_wait_subscribe() |
| |
| # Now change the content on the leader and wait for it to show up |
| # on the router. We will do this a few times with a short delay. |
| for n in range(0, 5): |
| content = 'msg%d' % n |
| |
| self.nodes[LEADER].coap_set_content(content) |
| |
| response = self.nodes[ROUTER].coap_wait_response() |
| self.assertGreater(response['observe'], first_observe) |
| self.assertEqual(response['payload'], content) |
| self.assertEqual(response['source'], mleid) |
| |
| # Stop subscription |
| self.nodes[ROUTER].coap_cancel() |
| |
| # We should see the response, but with no Observe option |
| response = self.nodes[ROUTER].coap_wait_response() |
| self.assertIsNone(response['observe']) |
| # Content won't have changed. |
| self.assertEqual(response['payload'], content) |
| |
| # Make another change, no notification should be sent |
| self.nodes[LEADER].coap_set_content('LastNote') |
| |
| # This should time out! |
| try: |
| self.nodes[ROUTER].coap_wait_response() |
| self.fail('Should not have received notification') |
| except pexpect.exceptions.TIMEOUT: |
| pass |
| |
| self.nodes[ROUTER].coap_stop() |
| self.nodes[LEADER].coap_stop() |
| |
| def test_con(self): |
| """ |
| Test notification using CON messages. |
| """ |
| for trial in range(0, 3): |
| try: |
| self._do_notification_test(con=True) |
| break |
| except (AssertionError, pexpect.exceptions.TIMEOUT): |
| continue |
| |
| def test_non(self): |
| """ |
| Test notification using NON messages. |
| """ |
| for trial in range(0, 3): |
| try: |
| self._do_notification_test(con=False) |
| break |
| except (AssertionError, pexpect.exceptions.TIMEOUT): |
| continue |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |