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[nexus] migrate dns_client_config_auto_start to nexus (#12936)
This commit migrates the dns_client_config_auto_start test from the thread-cert Python-based test framework to the Nexus C++ simulation framework. The new Nexus test (test_dns_client_config_auto_start.cpp) verifies: - DNS client uses the SRP server address automatically when no explicit config is set. - Explicitly set DNS config takes precedence over auto-discovered SRP server address. - Clearing an explicit DNS config allows the client to fall back to the auto-discovered SRP server address. - DNS client updates its default config when the SRP server changes. Changes: - Added tests/nexus/test_dns_client_config_auto_start.cpp - Updated tests/nexus/CMakeLists.txt to build the new test - Updated tests/nexus/run_nexus_tests.sh to include it in default - Removed tests/scripts/thread-cert/test_dns_client_config_auto_start.py
This commit is contained in:
Jonathan Hui
@@ -391,6 +391,7 @@ ot_nexus_test(border_agent_tracker "core;nexus")
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ot_nexus_test(child_supervision "core;nexus")
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ot_nexus_test(dataset_updater "core;nexus")
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ot_nexus_test(discover_scan "core;nexus")
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ot_nexus_test(dns_client_config_auto_start "core;nexus")
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ot_nexus_test(dtls "core;nexus")
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ot_nexus_test(form_join "core;nexus")
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ot_nexus_test(ipv6_source_selection "core;nexus")
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@@ -0,0 +1,195 @@
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/*
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* Copyright (c) 2026, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "platform/nexus_core.hpp"
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#include "platform/nexus_node.hpp"
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namespace ot {
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namespace Nexus {
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/**
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* Time to advance for a node to form a network and become leader, in milliseconds.
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*/
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static constexpr uint32_t kFormNetworkTime = 13 * 1000;
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/**
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* Time to advance for a node to join a network, in milliseconds.
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*/
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static constexpr uint32_t kJoinNetworkTime = 10 * 1000;
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/**
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* Time to advance for the network to stabilize, in milliseconds.
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*/
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static constexpr uint32_t kStabilizationTime = 15 * 1000;
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/**
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* Default DNS server address for testing.
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*/
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static const char kDefaultAddress[] = "fd00:1:2:3:4:5:6:7";
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void TestDnsClientConfigAutoStart(void)
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{
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Core nexus;
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Node &leader = nexus.CreateNode();
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Node &router = nexus.CreateNode();
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leader.SetName("LEADER");
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router.SetName("ROUTER");
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SuccessOrQuit(Instance::SetGlobalLogLevel(kLogLevelNote));
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Log("---------------------------------------------------------------------------------------");
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Log("Form network");
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leader.Form();
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nexus.AdvanceTime(kFormNetworkTime);
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VerifyOrQuit(leader.Get<Mle::Mle>().IsLeader());
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router.Join(leader);
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nexus.AdvanceTime(kJoinNetworkTime + kStabilizationTime);
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VerifyOrQuit(router.Get<Mle::Mle>().IsRouter());
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Log("---------------------------------------------------------------------------------------");
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Log("On leader set DNS config explicitly");
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{
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Dns::Client::QueryConfig dnsConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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SuccessOrQuit(AsCoreType(&dnsConfig.mServerSockAddr.mAddress).FromString(kDefaultAddress));
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dnsConfig.mServerSockAddr.mPort = 53;
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leader.Get<Dns::Client>().SetDefaultConfig(dnsConfig);
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const Dns::Client::QueryConfig ¤tConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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VerifyOrQuit(currentConfig.GetServerSockAddr().GetAddress() == AsCoreType(&dnsConfig.mServerSockAddr.mAddress));
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VerifyOrQuit(currentConfig.GetServerSockAddr().GetPort() == 53);
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}
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Log("---------------------------------------------------------------------------------------");
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Log("Start leader to act as SRP server");
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leader.Get<Srp::Server>().SetEnabled(true);
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Log("---------------------------------------------------------------------------------------");
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Log("Enable SRP client auto start on both nodes");
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leader.Get<Srp::Client>().EnableAutoStartMode(nullptr, nullptr);
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router.Get<Srp::Client>().EnableAutoStartMode(nullptr, nullptr);
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nexus.AdvanceTime(kStabilizationTime);
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Log("---------------------------------------------------------------------------------------");
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Log("Verify that on router the default DNS config is changed to the SRP server address");
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Ip6::Address srpServerAddress;
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srpServerAddress = router.Get<Srp::Client>().GetServerAddress().GetAddress();
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VerifyOrQuit(!srpServerAddress.IsUnspecified());
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VerifyOrQuit(srpServerAddress == leader.Get<Srp::Client>().GetServerAddress().GetAddress());
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{
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const Dns::Client::QueryConfig &dnsConfig = router.Get<Dns::Client>().GetDefaultConfig();
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VerifyOrQuit(dnsConfig.GetServerSockAddr().GetAddress() == srpServerAddress);
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VerifyOrQuit(dnsConfig.GetServerSockAddr().GetPort() == 53);
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}
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Log("---------------------------------------------------------------------------------------");
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Log("Verify that on leader the default DNS config remains as before");
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{
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const Dns::Client::QueryConfig &dnsConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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Ip6::Address expectedAddress;
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SuccessOrQuit(expectedAddress.FromString(kDefaultAddress));
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VerifyOrQuit(dnsConfig.GetServerSockAddr().GetAddress() == expectedAddress);
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}
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Log("---------------------------------------------------------------------------------------");
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Log("On leader clear DNS config and verify it adopts the SRP server address");
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{
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Dns::Client::QueryConfig dnsConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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AsCoreType(&dnsConfig.mServerSockAddr.mAddress).Clear();
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leader.Get<Dns::Client>().SetDefaultConfig(dnsConfig);
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const Dns::Client::QueryConfig ¤tConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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VerifyOrQuit(currentConfig.GetServerSockAddr().GetAddress() == srpServerAddress);
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}
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Log("---------------------------------------------------------------------------------------");
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Log("On leader set DNS config explicitly again");
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{
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Dns::Client::QueryConfig dnsConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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SuccessOrQuit(AsCoreType(&dnsConfig.mServerSockAddr.mAddress).FromString(kDefaultAddress));
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leader.Get<Dns::Client>().SetDefaultConfig(dnsConfig);
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}
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Log("---------------------------------------------------------------------------------------");
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Log("Stop SRP server on leader and start it on router");
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leader.Get<Srp::Server>().SetEnabled(false);
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router.Get<Srp::Server>().SetEnabled(true);
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nexus.AdvanceTime(kStabilizationTime);
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Log("---------------------------------------------------------------------------------------");
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Log("Verify that SRP client on router switched to new SRP server");
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Ip6::Address newSrpServerAddress;
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newSrpServerAddress = router.Get<Srp::Client>().GetServerAddress().GetAddress();
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VerifyOrQuit(!newSrpServerAddress.IsUnspecified());
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VerifyOrQuit(newSrpServerAddress != srpServerAddress);
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VerifyOrQuit(newSrpServerAddress == leader.Get<Srp::Client>().GetServerAddress().GetAddress());
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Log("---------------------------------------------------------------------------------------");
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Log("Verify that config on router gets changed while on leader it remains unchanged");
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{
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const Dns::Client::QueryConfig &dnsConfig = router.Get<Dns::Client>().GetDefaultConfig();
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VerifyOrQuit(dnsConfig.GetServerSockAddr().GetAddress() == newSrpServerAddress);
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}
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{
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const Dns::Client::QueryConfig &dnsConfig = leader.Get<Dns::Client>().GetDefaultConfig();
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Ip6::Address expectedAddress;
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SuccessOrQuit(expectedAddress.FromString(kDefaultAddress));
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VerifyOrQuit(dnsConfig.GetServerSockAddr().GetAddress() == expectedAddress);
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}
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}
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} // namespace Nexus
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} // namespace ot
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int main(void)
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{
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ot::Nexus::TestDnsClientConfigAutoStart();
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printf("All tests passed\n");
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return 0;
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}
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@@ -1,150 +0,0 @@
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#!/usr/bin/env python3
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#
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# Copyright (c) 2021, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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import unittest
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import command
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import config
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import thread_cert
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# Test description:
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#
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# This test verifies the behavior of DNS client feature where the SRP
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# server address (from SRP client auto-start feature) is used as the
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# default IPv6 address for DNS resolver config when user does not
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# explicitly set a default address
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#
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# Topology: two nodes
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#
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# leader (SRP server & client & DNS client) --- router (SRP client & DNS client)
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#
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LEADER = 1
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ROUTER = 2
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DEFAULT_ADDRESS = 'fd00:1:2:3:4:5:6:7'
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class DnsClientConfigAutoStart(thread_cert.TestCase):
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USE_MESSAGE_FACTORY = False
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SUPPORT_NCP = False
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TOPOLOGY = {
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LEADER: {
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'name': 'LEADER',
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'mode': 'rdn',
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},
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ROUTER: {
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'name': 'ROUTER',
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'mode': 'rdn',
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},
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}
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def test(self):
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leader = self.nodes[LEADER]
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router = self.nodes[ROUTER]
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# Form network.
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leader.start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual(leader.get_state(), 'leader')
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router.start()
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self.simulator.go(config.ROUTER_STARTUP_DELAY)
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self.assertEqual(router.get_state(), 'router')
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# On leader set DNS config explicitly.
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leader.dns_set_config(DEFAULT_ADDRESS)
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dns_config = leader.dns_get_config()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(DEFAULT_ADDRESS))
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# Start leader to act as SRP server.
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leader.srp_server_set_enabled(True)
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# Enable SRP client auto start on both nodes.
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leader.srp_client_enable_auto_start_mode()
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router.srp_client_enable_auto_start_mode()
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self.simulator.go(5)
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# Verify that on router the default DNS config is changed
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# to the same address being used by SRP client.
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srp_server_address = router.srp_client_get_server_address()
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self.assertEqual(leader.srp_client_get_server_address(), srp_server_address)
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dns_config = router.dns_get_config()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(srp_server_address))
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# Verify that on leader the default DNS config remains
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# as before (the address explicitly set earlier).
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dns_config = leader.dns_get_config()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(DEFAULT_ADDRESS))
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# On leader clear DNS config (the explicitly set address)
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# and verify that it adopts the SRP server address.
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leader.dns_set_config("::")
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dns_config = leader.dns_get_config()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(srp_server_address))
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# On leader set DNS config explicitly again.
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leader.dns_set_config(DEFAULT_ADDRESS)
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dns_config = leader.dns_get_config()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(DEFAULT_ADDRESS))
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# Stop SRP server on leader and start it on router.
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leader.srp_server_set_enabled(False)
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router.srp_server_set_enabled(True)
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self.simulator.go(5)
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# Verify that SRP client on router switched to new SRP server.
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self.assertNotEqual(srp_server_address, router.srp_client_get_server_address())
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self.assertEqual(router.srp_client_get_server_address(), leader.srp_client_get_server_address())
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# Verify that config on router gets changed while on leader
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# it remains unchanged.
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dns_config = router.dns_get_config()
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srp_server_address = router.srp_client_get_server_address()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(srp_server_address))
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dns_config = leader.dns_get_config()
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self.assertEqual(dns_config['Server'], '[{}]:53'.format(DEFAULT_ADDRESS))
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if __name__ == '__main__':
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unittest.main()
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