#!/usr/bin/env python3 # # Copyright (c) 2021, 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 ipaddress import unittest import command import config import thread_cert # Test description: # This test verifies SRP client auto-start functionality that SRP client can # correctly discovers and connects to SRP server. # # Topology: # # Four routers, one acting as SRP client, others as SRP server. # CLIENT = 1 SERVER1 = 2 SERVER2 = 3 SERVER3 = 4 class SrpAutoStartMode(thread_cert.TestCase): USE_MESSAGE_FACTORY = False SUPPORT_NCP = False TOPOLOGY = { CLIENT: { 'name': 'SRP_CLIENT', 'mode': 'rdn', }, SERVER1: { 'name': 'SRP_SERVER1', 'mode': 'rdn', }, SERVER2: { 'name': 'SRP_SERVER2', 'mode': 'rdn', }, SERVER3: { 'name': 'SRP_SERVER3', 'mode': 'rdn', }, } def test(self): client = self.nodes[CLIENT] server1 = self.nodes[SERVER1] server2 = self.nodes[SERVER2] server3 = self.nodes[SERVER3] #------------------------------------------------------------------- # Form the network. client.srp_server_set_enabled(False) client.start() self.simulator.go(config.LEADER_STARTUP_DELAY) self.assertEqual(client.get_state(), 'leader') server1.start() server2.start() server3.start() self.simulator.go(config.ROUTER_STARTUP_DELAY) self.assertEqual(server1.get_state(), 'router') self.assertEqual(server2.get_state(), 'router') self.assertEqual(server3.get_state(), 'router') server1_mleid = server1.get_mleid() server2_mleid = server2.get_mleid() server3_mleid = server3.get_mleid() anycast_port = 53 #------------------------------------------------------------------- # Enable server1 with unicast address mode server1.srp_server_set_addr_mode('unicast') server1.srp_server_set_enabled(True) self.simulator.go(5) #------------------------------------------------------------------- # Check auto start mode on client and check that server1 is selected self.assertEqual(client.srp_client_get_auto_start_mode(), 'Enabled') self.simulator.go(2) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), server1_mleid) #------------------------------------------------------------------- # Disable server1 and check client is stopped/disabled. server1.srp_server_set_enabled(False) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Disabled') #------------------------------------------------------------------- # Enable server2 with unicast address mode and check client starts # again. server1.srp_server_set_addr_mode('unicast') server2.srp_server_set_enabled(True) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), server2_mleid) #------------------------------------------------------------------- # Enable server1 and check that client stays with server2 server1.srp_server_set_enabled(True) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), server2_mleid) #------------------------------------------------------------------- # Disable server2 and check client switches to server1. server2.srp_server_set_enabled(False) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), server1_mleid) #------------------------------------------------------------------- # Enable server2 with anycast mode seq-num 1, and check that client # switched to it. server2.srp_server_set_addr_mode('anycast') server2.srp_server_set_anycast_seq_num(1) server2.srp_server_set_enabled(True) self.simulator.go(5) server2_alocs = server2.get_ip6_address(config.ADDRESS_TYPE.ALOC) self.assertEqual(server2.srp_server_get_anycast_seq_num(), 1) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertIn(client.srp_client_get_server_address(), server2_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Enable server3 with anycast mode seq-num 2, and check that client # switched to it since seq number is higher. server3.srp_server_set_addr_mode('anycast') server3.srp_server_set_anycast_seq_num(2) server3.srp_server_set_enabled(True) self.simulator.go(5) server3_alocs = server3.get_ip6_address(config.ADDRESS_TYPE.ALOC) self.assertEqual(server3.srp_server_get_anycast_seq_num(), 2) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertIn(client.srp_client_get_server_address(), server3_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Disable server3 and check that client goes back to server2. server3.srp_server_set_enabled(False) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertIn(client.srp_client_get_server_address(), server2_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Enable server3 with anycast mode seq-num 0 (which is smaller than # server2 seq-num 1) and check that client stays with server2. server3.srp_server_set_anycast_seq_num(0) server3.srp_server_set_enabled(True) self.simulator.go(5) self.assertEqual(server3.srp_server_get_anycast_seq_num(), 0) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertIn(client.srp_client_get_server_address(), server2_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Disable server2 and check that client goes back to server3. server2.srp_server_set_enabled(False) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Enabled') server3_alocs = server3.get_ip6_address(config.ADDRESS_TYPE.ALOC) self.assertIn(client.srp_client_get_server_address(), server3_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Disable server3 and check that client goes back to server1 with # unicast address. server3.srp_server_set_enabled(False) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), server1_mleid) #------------------------------------------------------------------- # Enable server2 with anycast mode seq-num 5, and check that client # switched to it. server2.srp_server_set_addr_mode('anycast') server2.srp_server_set_anycast_seq_num(5) server2.srp_server_set_enabled(True) self.simulator.go(5) server2_alocs = server2.get_ip6_address(config.ADDRESS_TYPE.ALOC) self.assertEqual(server2.srp_server_get_anycast_seq_num(), 5) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertIn(client.srp_client_get_server_address(), server2_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Publish an entry on server3 with specific unicast address # This entry should be now preferred over anycast of server2. unicast_addr3 = 'fd00:0:0:0:0:3333:beef:cafe' unicast_port3 = 1234 server3.netdata_publish_dnssrp_unicast(unicast_addr3, unicast_port3) self.simulator.go(65) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), unicast_addr3) self.assertEqual(client.srp_client_get_server_port(), unicast_port3) #------------------------------------------------------------------- # Publish an entry on server1 with specific unicast address # Client should still stay with server3 which it originally selected. unicast_addr1 = 'fd00:0:0:0:0:2222:beef:cafe' unicast_port1 = 10203 server1.srp_server_set_enabled(False) server1.netdata_publish_dnssrp_unicast(unicast_addr1, unicast_port1) self.simulator.go(65) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), unicast_addr3) self.assertEqual(client.srp_client_get_server_port(), unicast_port3) #------------------------------------------------------------------- # Unpublish the entry on server3. Now client should switch to entry # from server1. server3.netdata_unpublish_dnssrp() self.simulator.go(65) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertEqual(client.srp_client_get_server_address(), unicast_addr1) self.assertEqual(client.srp_client_get_server_port(), unicast_port1) #------------------------------------------------------------------- # Unpublish the entry on server1 and check client goes back to anycast # entry from server2. server1.netdata_unpublish_dnssrp() self.simulator.go(65) self.assertEqual(client.srp_client_get_state(), 'Enabled') self.assertIn(client.srp_client_get_server_address(), server2_alocs) self.assertEqual(client.srp_client_get_server_port(), anycast_port) #------------------------------------------------------------------- # Finally disable server2, and check that client is disabled. server2.srp_server_set_enabled(False) self.simulator.go(5) self.assertEqual(client.srp_client_get_state(), 'Disabled') if __name__ == '__main__': unittest.main()