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[nexus] migrate SRP many services MTU test to Nexus (#12948)
This commit migrates the test_srp_many_services_mtu_check.py from tests/scripts/thread-cert to the Nexus test framework. The new test, tests/nexus/test_srp_many_services_mtu_check.cpp, verifies that the SRP client correctly handles and splits SRP Update messages when registering a large number of services that exceed the IPv6 MTU size (1280 bytes). Changes: - Added tests/nexus/test_srp_many_services_mtu_check.cpp. - Updated tests/nexus/CMakeLists.txt to include the new test. - Removed tests/scripts/thread-cert/test_srp_many_services_mtu_check.py.
This commit is contained in:
Jonathan Hui
@@ -408,6 +408,7 @@ ot_nexus_test(router_downgrade_on_sec_policy_change "core;nexus")
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ot_nexus_test(srp_auto_start "core;nexus")
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ot_nexus_test(srp_client_change_lease "core;nexus")
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ot_nexus_test(srp_lease "core;nexus")
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ot_nexus_test(srp_many_services_mtu_check "core;nexus")
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ot_nexus_test(zero_len_external_route "core;nexus")
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# Trel
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@@ -0,0 +1,189 @@
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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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* Nexus test for SRP many services MTU check.
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*
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* Verifies that the SRP client handles cases where many services cause the SRP Update message to exceed the
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* IPv6 MTU size (1280 bytes). In such cases, the SRP client should register services by splitting them into
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* multiple update messages.
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*
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*/
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void TestSrpManyServicesMtuCheck(void)
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{
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Core nexus;
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Node &server = nexus.CreateNode();
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Node &client = nexus.CreateNode();
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server.SetName("SRP_SERVER");
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client.SetName("SRP_CLIENT");
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Log("---------------------------------------------------------------------------------------");
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Log("Step 1: Start the server & client devices.");
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server.Form();
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SuccessOrQuit(server.Get<Srp::Server>().SetAddressMode(Srp::Server::kAddressModeUnicast));
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server.Get<Srp::Server>().SetEnabled(true);
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nexus.AdvanceTime(20 * 1000);
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VerifyOrQuit(server.Get<Mle::Mle>().IsLeader());
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client.Join(server, Node::kAsFed);
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nexus.AdvanceTime(20 * 1000);
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VerifyOrQuit(client.Get<Mle::Mle>().IsAttached());
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Log("---------------------------------------------------------------------------------------");
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Log("Step 2: Register 15 services with long names and sub-types to hit MTU and trigger splitting.");
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const uint16_t kNumServices = 15;
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client.Get<Srp::Client>().EnableAutoStartMode(nullptr, nullptr);
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SuccessOrQuit(client.Get<Srp::Client>().EnableAutoHostAddress());
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SuccessOrQuit(
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client.Get<Srp::Client>().SetHostName("hosthosthosthosthosthosthosthosthosthosthosthosthosthosthosthos"));
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static Srp::Client::Service services[15];
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static String<64> serviceNames[15];
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static const char *const kSubTypeLabels[] = {"_sub1", nullptr};
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static const Dns::TxtEntry kTxtEntries[] = {
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Dns::TxtEntry("xyz", reinterpret_cast<const uint8_t *>("987654321"), 9),
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Dns::TxtEntry("uvw", reinterpret_cast<const uint8_t *>("abcdefghijklmnopqrstu"), 21),
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Dns::TxtEntry("qwp", reinterpret_cast<const uint8_t *>("564321abcdefghij"), 16),
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};
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for (uint16_t i = 0; i < kNumServices; i++)
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{
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serviceNames[i].Clear().AppendCharMultipleTimes('a' + i, 63);
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ClearAllBytes(services[i]);
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services[i].mName = "_longlongsrvname._udp";
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services[i].mInstanceName = serviceNames[i].AsCString();
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services[i].mSubTypeLabels = kSubTypeLabels;
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services[i].mTxtEntries = kTxtEntries;
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services[i].mNumTxtEntries = GetArrayLength(kTxtEntries);
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services[i].mPort = 1977 + i;
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SuccessOrQuit(client.Get<Srp::Client>().AddService(services[i]));
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}
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nexus.AdvanceTime(200 * 1000);
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Log("---------------------------------------------------------------------------------------");
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Log("Step 3: Make sure all services are successfully registered.");
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Log("Client Running: %s", client.Get<Srp::Client>().IsRunning() ? "Yes" : "No");
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Log("Host state: %s", Srp::Client::ItemStateToString(client.Get<Srp::Client>().GetHostInfo().GetState()));
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VerifyOrQuit(client.Get<Srp::Client>().GetHostInfo().GetState() == Srp::Client::kRegistered);
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for (uint16_t i = 0; i < kNumServices; i++)
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{
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// Find the service in client and check state
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const Srp::Client::Service *service = client.Get<Srp::Client>().GetServices().GetHead();
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bool found = false;
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while (service != nullptr)
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{
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if (StringMatch(service->mInstanceName, serviceNames[i].AsCString(), kStringCaseInsensitiveMatch))
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{
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VerifyOrQuit(service->GetState() == Srp::Client::kRegistered);
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found = true;
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break;
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}
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service = service->GetNext();
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}
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VerifyOrQuit(found);
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}
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{
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const Srp::Server::Host *host = server.Get<Srp::Server>().GetNextHost(nullptr);
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VerifyOrQuit(host != nullptr);
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uint16_t registeredCount = 0;
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for (const Srp::Server::Service *service = host->GetNextService(nullptr); service != nullptr;
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service = host->GetNextService(service))
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{
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if (!service->IsDeleted())
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{
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registeredCount++;
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}
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}
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VerifyOrQuit(registeredCount == kNumServices);
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}
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Log("Registration worked for 15 long services on both client and server (MTU exceeded).");
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Log("---------------------------------------------------------------------------------------");
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Log("Step 4: Remove all 15 services.");
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for (uint16_t i = 0; i < kNumServices; i++)
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{
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SuccessOrQuit(client.Get<Srp::Client>().RemoveService(services[i]));
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}
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nexus.AdvanceTime(200 * 1000);
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Log("---------------------------------------------------------------------------------------");
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Log("Step 5: Verify services are removed.");
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VerifyOrQuit(client.Get<Srp::Client>().GetServices().IsEmpty());
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{
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const Srp::Server::Host *host = server.Get<Srp::Server>().GetNextHost(nullptr);
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VerifyOrQuit(host != nullptr);
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const Srp::Server::Service *service = host->GetNextService(nullptr);
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uint16_t deletedCount = 0;
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while (service != nullptr)
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{
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VerifyOrQuit(service->IsDeleted());
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deletedCount++;
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service = host->GetNextService(service);
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}
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VerifyOrQuit(deletedCount == kNumServices);
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}
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Log("All services removed and marked as deleted on server.");
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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::TestSrpManyServicesMtuCheck();
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printf("All tests passed\n");
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return 0;
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}
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@@ -1,141 +0,0 @@
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#!/usr/bin/env python3
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#
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# Copyright (c) 2022, 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 ipaddress
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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 SRP client behavior when there are many services
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# causing SRP Update message going over the IPv6 MTU size. In such
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# a case the SRP client attempts to register a single service at
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# a time.
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#
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# Topology:
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#
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# LEADER (SRP server)
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# |
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# |
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# ROUTER (SRP client)
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#
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SERVER = 1
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CLIENT = 2
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class SrpManyServicesMtuCheck(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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SERVER: {
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'name': 'SRP_SERVER',
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'mode': 'rdn',
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},
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CLIENT: {
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'name': 'SRP_CLIENT',
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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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server = self.nodes[SERVER]
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client = self.nodes[CLIENT]
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# Start the server & client devices.
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server.start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual(server.get_state(), 'leader')
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client.start()
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self.simulator.go(config.ROUTER_STARTUP_DELAY)
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self.assertEqual(client.get_state(), 'router')
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server.srp_server_set_enabled(True)
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client.srp_client_enable_auto_start_mode()
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self.simulator.go(15)
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# Register 8 services with long name, 6 sub-types and long txt record.
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# The 8 services won't be fit in a single MTU (1280 bytes) UDP message
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# SRP Client would then register services one by one.
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num_services = 8
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client.srp_client_set_host_name('hosthosthosthosthosthosthosthosthosthosthosthosthosthosthosthos')
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client.srp_client_set_host_address('2001::1')
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txt_info = ["xyz=987654321", "uvw=abcdefghijklmnopqrstu", "qwp=564321abcdefghij"]
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for num in range(num_services):
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name = chr(ord('a') + num) * 63
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client.srp_client_add_service(
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name,
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'_longlongsrvname._udp,_subtype1,_subtype2,_subtype3,_subtype4,_subtype5,_subtype6',
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1977,
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txt_entries=txt_info)
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self.simulator.go(10)
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# Make sure all services are successfully registered
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# (from both client and server perspectives).
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client_services = client.srp_client_get_services()
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self.assertEqual(len(client_services), num_services)
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for service in client_services:
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self.assertEqual(service['state'], 'Registered')
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server_services = server.srp_server_get_services()
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self.assertEqual(len(server_services), num_services)
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# Remove all 8 services.
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for num in range(num_services):
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name = chr(ord('a') + num) * 63
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client.srp_client_remove_service(name, '_longlongsrvname._udp')
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self.simulator.go(10)
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client_services = client.srp_client_get_services()
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self.assertEqual(len(client_services), 0)
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server_services = server.srp_server_get_services()
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self.assertEqual(len(server_services), num_services)
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for service in server_services:
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self.assertEqual(service['deleted'], 'true')
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if __name__ == '__main__':
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unittest.main()
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