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pigweed / third_party / github / project-chip / connectedhomeip / 7341263d8c2fce0deceea1b2e260c55db6c6330e / . / src / messaging / tests / TestReliableMessageProtocol.cpp
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/*
*
* Copyright (c) 2020-2021 Project CHIP Authors
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file
* This file implements unit tests for the ReliableMessageProtocol
* implementation.
*/
#include <lib/core/CHIPCore.h>
#include <lib/support/CodeUtils.h>
#include <lib/support/UnitTestContext.h>
#include <lib/support/UnitTestRegistration.h>
#include <lib/support/UnitTestUtils.h>
#include <messaging/ReliableMessageContext.h>
#include <messaging/ReliableMessageMgr.h>
#include <messaging/ReliableMessageProtocolConfig.h>
#include <protocols/Protocols.h>
#include <protocols/echo/Echo.h>
#include <transport/SessionManager.h>
#include <transport/TransportMgr.h>
#include <nlbyteorder.h>
#include <nlunit-test.h>
#include <errno.h>
#include <messaging/ExchangeContext.h>
#include <messaging/ExchangeMgr.h>
#include <messaging/Flags.h>
#include <messaging/tests/MessagingContext.h>
#if CHIP_CONFIG_ENABLE_ICD_SERVER
#include <app/icd/ICDConfigurationData.h> // nogncheck
#endif
namespace {
using namespace chip;
using namespace chip::Inet;
using namespace chip::Transport;
using namespace chip::Messaging;
using namespace chip::Protocols;
using namespace chip::System::Clock::Literals;
using TestContext = Test::LoopbackMessagingContext;
const char PAYLOAD[] = "Hello!";
// The CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST can be set to non-zero value
// to boost the retransmission timeout for a high latency network like Thread to
// avoid spurious retransmits.
//
// This adds extra I/O time to account for this. See the documentation for
// CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST for more details.
constexpr auto retryBoosterTimeout = CHIP_CONFIG_RMP_DEFAULT_MAX_RETRANS * CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST;
class MockAppDelegate : public UnsolicitedMessageHandler, public ExchangeDelegate
{
public:
MockAppDelegate(TestContext & ctx) : mTestContext(ctx) {}
CHIP_ERROR OnUnsolicitedMessageReceived(const PayloadHeader & payloadHeader, ExchangeDelegate *& newDelegate) override
{
// Handle messages by myself
newDelegate = this;
return CHIP_NO_ERROR;
}
CHIP_ERROR OnMessageReceived(ExchangeContext * ec, const PayloadHeader & payloadHeader,
System::PacketBufferHandle && buffer) override
{
IsOnMessageReceivedCalled = true;
if (payloadHeader.IsAckMsg())
{
mReceivedPiggybackAck = true;
}
if (mDropAckResponse)
{
auto * rc = ec->GetReliableMessageContext();
if (rc->HasPiggybackAckPending())
{
// Make sure we don't accidentally retransmit and end up acking
// the retransmit.
rc->GetReliableMessageMgr()->StopTimer();
(void) rc->TakePendingPeerAckMessageCounter();
}
}
if (mExchange != ec)
{
CloseExchangeIfNeeded();
}
if (!mRetainExchange)
{
ec = nullptr;
}
else
{
ec->WillSendMessage();
}
mExchange = ec;
if (mTestSuite != nullptr)
{
NL_TEST_ASSERT(mTestSuite, buffer->TotalLength() == sizeof(PAYLOAD));
NL_TEST_ASSERT(mTestSuite, memcmp(buffer->Start(), PAYLOAD, buffer->TotalLength()) == 0);
}
return CHIP_NO_ERROR;
}
void OnResponseTimeout(ExchangeContext * ec) override { mResponseTimedOut = true; }
void CloseExchangeIfNeeded()
{
if (mExchange != nullptr)
{
mExchange->Close();
mExchange = nullptr;
}
}
void SetDropAckResponse(bool dropResponse)
{
mDropAckResponse = dropResponse;
if (!mDropAckResponse)
{
// Restart the MRP retransmit timer, now that we are not going to be
// dropping acks anymore, so we send out pending retransmits, if
// any, as needed.
mTestContext.GetExchangeManager().GetReliableMessageMgr()->StartTimer();
}
}
bool IsOnMessageReceivedCalled = false;
bool mReceivedPiggybackAck = false;
bool mRetainExchange = false;
bool mResponseTimedOut = false;
ExchangeContext * mExchange = nullptr;
nlTestSuite * mTestSuite = nullptr;
private:
TestContext & mTestContext;
bool mDropAckResponse = false;
};
class MockSessionEstablishmentExchangeDispatch : public Messaging::ApplicationExchangeDispatch
{
public:
bool IsReliableTransmissionAllowed() const override { return mRetainMessageOnSend; }
bool MessagePermitted(Protocols::Id protocol, uint8_t type) override { return true; }
bool IsEncryptionRequired() const override { return mRequireEncryption; }
bool mRetainMessageOnSend = true;
bool mRequireEncryption = false;
};
class MockSessionEstablishmentDelegate : public UnsolicitedMessageHandler, public ExchangeDelegate
{
public:
CHIP_ERROR OnUnsolicitedMessageReceived(const PayloadHeader & payloadHeader, ExchangeDelegate *& newDelegate) override
{
// Handle messages by myself
newDelegate = this;
return CHIP_NO_ERROR;
}
CHIP_ERROR OnMessageReceived(ExchangeContext * ec, const PayloadHeader & payloadHeader,
System::PacketBufferHandle && buffer) override
{
IsOnMessageReceivedCalled = true;
if (mTestSuite != nullptr)
{
NL_TEST_ASSERT(mTestSuite, buffer->TotalLength() == sizeof(PAYLOAD));
NL_TEST_ASSERT(mTestSuite, memcmp(buffer->Start(), PAYLOAD, buffer->TotalLength()) == 0);
}
return CHIP_NO_ERROR;
}
void OnResponseTimeout(ExchangeContext * ec) override {}
virtual ExchangeMessageDispatch & GetMessageDispatch() override { return mMessageDispatch; }
bool IsOnMessageReceivedCalled = false;
MockSessionEstablishmentExchangeDispatch mMessageDispatch;
nlTestSuite * mTestSuite = nullptr;
};
struct BackoffComplianceTestVector
{
uint8_t sendCount;
System::Clock::Timeout backoffBase;
System::Clock::Timeout backoffMin;
System::Clock::Timeout backoffMax;
};
struct BackoffComplianceTestVector theBackoffComplianceTestVector[] = {
{
.sendCount = 0,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(330),
.backoffMax = System::Clock::Timeout(413),
},
{
.sendCount = 1,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(330),
.backoffMax = System::Clock::Timeout(413),
},
{
.sendCount = 2,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(528),
.backoffMax = System::Clock::Timeout(660),
},
{
.sendCount = 3,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(844),
.backoffMax = System::Clock::Timeout(1057),
},
{
.sendCount = 4,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(1351),
.backoffMax = System::Clock::Timeout(1690),
},
{
.sendCount = 5,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(2162),
.backoffMax = System::Clock::Timeout(2704),
},
{
.sendCount = 6,
.backoffBase = System::Clock::Timeout(300),
.backoffMin = System::Clock::Timeout(2162),
.backoffMax = System::Clock::Timeout(2704),
},
{
.sendCount = 0,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(4400),
.backoffMax = System::Clock::Timeout(5500),
},
{
.sendCount = 1,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(4400),
.backoffMax = System::Clock::Timeout(5500),
},
{
.sendCount = 2,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(7040),
.backoffMax = System::Clock::Timeout(8800),
},
{
.sendCount = 3,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(11264),
.backoffMax = System::Clock::Timeout(14081),
},
{
.sendCount = 4,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(18022),
.backoffMax = System::Clock::Timeout(22529),
},
{
.sendCount = 5,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(28835),
.backoffMax = System::Clock::Timeout(36045),
},
{
.sendCount = 6,
.backoffBase = System::Clock::Timeout(4000),
.backoffMin = System::Clock::Timeout(28835),
.backoffMax = System::Clock::Timeout(36045),
},
};
} // namespace
class TestReliableMessageProtocol
{
public:
static void CheckAddClearRetrans(nlTestSuite * inSuite, void * inContext);
static void CheckResendApplicationMessage(nlTestSuite * inSuite, void * inContext);
static void CheckCloseExchangeAndResendApplicationMessage(nlTestSuite * inSuite, void * inContext);
static void CheckFailedMessageRetainOnSend(nlTestSuite * inSuite, void * inContext);
static void CheckResendApplicationMessageWithPeerExchange(nlTestSuite * inSuite, void * inContext);
static void CheckResendSessionEstablishmentMessageWithPeerExchange(nlTestSuite * inSuite, void * inContext);
static void CheckDuplicateMessage(nlTestSuite * inSuite, void * inContext);
static void CheckDuplicateMessageClosedExchange(nlTestSuite * inSuite, void * inContext);
static void CheckDuplicateOldMessageClosedExchange(nlTestSuite * inSuite, void * inContext);
static void CheckReceiveAfterStandaloneAck(nlTestSuite * inSuite, void * inContext);
static void CheckPiggybackAfterPiggyback(nlTestSuite * inSuite, void * inContext);
static void CheckSendUnsolicitedStandaloneAckMessage(nlTestSuite * inSuite, void * inContext);
static void CheckSendStandaloneAckMessage(nlTestSuite * inSuite, void * inContext);
static void CheckMessageAfterClosed(nlTestSuite * inSuite, void * inContext);
static void CheckUnencryptedMessageReceiveFailure(nlTestSuite * inSuite, void * inContext);
static void CheckLostResponseWithPiggyback(nlTestSuite * inSuite, void * inContext);
static void CheckLostStandaloneAck(nlTestSuite * inSuite, void * inContext);
static void CheckIsPeerActiveNotInitiator(nlTestSuite * inSuite, void * inContext);
static void CheckGetBackoff(nlTestSuite * inSuite, void * inContext);
static void CheckApplicationResponseDelayed(nlTestSuite * inSuite, void * inContext);
static void CheckApplicationResponseNeverComes(nlTestSuite * inSuite, void * inContext);
static int InitializeTestCase(void * inContext);
};
void TestReliableMessageProtocol::CheckAddClearRetrans(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
MockAppDelegate mockAppDelegate(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockAppDelegate);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
ReliableMessageContext * rc = exchange->GetReliableMessageContext();
NL_TEST_ASSERT(inSuite, rm != nullptr);
NL_TEST_ASSERT(inSuite, rc != nullptr);
ReliableMessageMgr::RetransTableEntry * entry;
rm->AddToRetransTable(rc, &entry);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
rm->ClearRetransTable(*entry);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
exchange->Close();
}
/**
* Tests MRP retransmission logic with the following scenario:
*
* DUT = sender, PEER = remote device
*
* 1) DUT configured to use sleepy peer parameters of active = 64ms, idle = 64ms
* 2) DUT sends message attempt #1 to PEER
* - Force PEER to drop message
* - Observe DUT timeout with no ack
* - Confirm MRP backoff interval is correct
* 3) DUT resends message attempt #2 to PEER
* - Force PEER to drop message
* - Observe DUT timeout with no ack
* - Confirm MRP backoff interval is correct
* 4) DUT resends message attempt #3 to PEER
* - Force PEER to drop message
* - Observe DUT timeout with no ack
* - Confirm MRP backoff interval is correct
* 5) DUT resends message attempt #4 to PEER
* - Force PEER to drop message
* - Observe DUT timeout with no ack
* - Confirm MRP backoff interval is correct
* 6) DUT resends message attempt #5 to PEER
* - PEER to acknowledge message
* - Observe DUT signal successful reliable transmission
*/
void TestReliableMessageProtocol::CheckResendApplicationMessage(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
BackoffComplianceTestVector * expectedBackoff;
System::Clock::Timestamp now, startTime;
System::Clock::Timeout timeoutTime, margin;
margin = System::Clock::Timeout(15);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockSender(ctx);
// TODO: temporarily create a SessionHandle from node id, will be fix in PR 3602
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
System::Clock::Timestamp(300), // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
System::Clock::Timestamp(300), // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
// Let's drop the initial message
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 4;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// Ensure the exchange stays open after we send (unlike the CheckCloseExchangeAndResendApplicationMessage case), by claiming to
// expect a response.
startTime = System::SystemClock().GetMonotonicTimestamp();
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendMessageFlags::kExpectResponse);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the initial message was dropped and was added to retransmit table
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 3);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Wait for the initial message to fail (should take 330-413ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 2; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #1 Timeout : %" PRIu32 "ms", timeoutTime.count());
expectedBackoff = &theBackoffComplianceTestVector[0];
NL_TEST_ASSERT(inSuite, timeoutTime >= expectedBackoff->backoffMin - margin);
startTime = System::SystemClock().GetMonotonicTimestamp();
ctx.DrainAndServiceIO();
// Ensure the 1st retry was dropped, and is still there in the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 2);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Wait for the 1st retry to fail (should take 330-413ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 3; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #2 Timeout : %" PRIu32 "ms", timeoutTime.count());
expectedBackoff = &theBackoffComplianceTestVector[1];
NL_TEST_ASSERT(inSuite, timeoutTime >= expectedBackoff->backoffMin - margin);
startTime = System::SystemClock().GetMonotonicTimestamp();
ctx.DrainAndServiceIO();
// Ensure the 2nd retry was dropped, and is still there in the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 3);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 3);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Wait for the 2nd retry to fail (should take 528-660ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 4; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #3 Timeout : %" PRIu32 "ms", timeoutTime.count());
expectedBackoff = &theBackoffComplianceTestVector[2];
NL_TEST_ASSERT(inSuite, timeoutTime >= expectedBackoff->backoffMin - margin);
startTime = System::SystemClock().GetMonotonicTimestamp();
ctx.DrainAndServiceIO();
// Ensure the 3rd retry was dropped, and is still there in the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 4);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 4);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Wait for the 3rd retry to fail (should take 845-1056ms)
ctx.GetIOContext().DriveIOUntil(1500_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 5; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #4 Timeout : %" PRIu32 "ms", timeoutTime.count());
expectedBackoff = &theBackoffComplianceTestVector[3];
NL_TEST_ASSERT(inSuite, timeoutTime >= expectedBackoff->backoffMin - margin);
// Trigger final transmission
ctx.DrainAndServiceIO();
// Ensure the last retransmission was NOT dropped, and the retransmit table is empty, as we should have gotten an ack
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount >= 5);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 4);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
exchange->Close();
}
void TestReliableMessageProtocol::CheckCloseExchangeAndResendApplicationMessage(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockSender(ctx);
// TODO: temporarily create a SessionHandle from node id, will be fixed in PR 3602
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
// Let's drop the initial message
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 2;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was dropped, and was added to retransmit table
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Wait for the first re-transmit (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 2; });
ctx.DrainAndServiceIO();
// Ensure the retransmit message was dropped, and is still there in the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 2);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Wait for the second re-transmit (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 3; });
ctx.DrainAndServiceIO();
// Ensure the retransmit message was NOT dropped, and the retransmit table is empty, as we should have gotten an ack
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount >= 3);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 2);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckFailedMessageRetainOnSend(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockSessionEstablishmentDelegate mockSender;
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
mockSender.mMessageDispatch.mRetainMessageOnSend = false;
// Let's drop the initial message
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 1;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was dropped
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
// Wait for the first re-transmit (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 2; });
ctx.DrainAndServiceIO();
// Ensure the retransmit table is empty, as we did not provide a message to retain
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckUnencryptedMessageReceiveFailure(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
MockSessionEstablishmentDelegate mockReceiver;
CHIP_ERROR err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
// Expect the received messages to be encrypted
mockReceiver.mMessageDispatch.mRequireEncryption = true;
MockSessionEstablishmentDelegate mockSender;
ExchangeContext * exchange = ctx.NewUnauthenticatedExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
// We are sending a malicious packet, doesn't expect an ack
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kNoAutoRequestAck));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Test that the message was actually sent (and not dropped)
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Test that the message was dropped by the receiver
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckResendApplicationMessageWithPeerExchange(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
// Let's drop the initial message
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 1;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was dropped, and was added to retransmit table
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
// Wait for the first re-transmit (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 2; });
ctx.DrainAndServiceIO();
// Ensure the retransmit message was not dropped, and is no longer in the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount >= 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
mockReceiver.mTestSuite = nullptr;
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
}
void TestReliableMessageProtocol::CheckDuplicateMessageClosedExchange(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_RMP_DEFAULT_INITIAL_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_RMP_DEFAULT_ACTIVE_RETRY_INTERVAL
}));
// Let's not drop the message. Expectation is that it is received by the peer, but the ack is dropped
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
// Drop the ack, and also close the peer exchange
mockReceiver.SetDropAckResponse(true);
mockReceiver.mRetainExchange = false;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent
// The ack was dropped, and message was added to the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Let's not drop the duplicate message
mockReceiver.SetDropAckResponse(false);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
// Wait for the first re-transmit and ack (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 3; });
ctx.DrainAndServiceIO();
// Ensure the retransmit message was sent and the ack was sent
// and retransmit table was cleared
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 3);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckDuplicateOldMessageClosedExchange(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_RMP_DEFAULT_INITIAL_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_RMP_DEFAULT_ACTIVE_RETRY_INTERVAL
}));
// Let's not drop the message. Expectation is that it is received by the peer, but the ack is dropped
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
// Drop the ack, and also close the peer exchange
mockReceiver.SetDropAckResponse(true);
mockReceiver.mRetainExchange = false;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent
// The ack was dropped, and message was added to the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Now send CHIP_CONFIG_MESSAGE_COUNTER_WINDOW_SIZE + 2 messages to make
// sure our original message is out of the message counter window. These
// messages can be sent withour MRP, because we are not expecting acks for
// them anyway.
size_t extraMessages = CHIP_CONFIG_MESSAGE_COUNTER_WINDOW_SIZE + 2;
for (size_t i = 0; i < extraMessages; ++i)
{
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
ExchangeContext * newExchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, newExchange != nullptr);
mockReceiver.mRetainExchange = false;
// Ensure the retransmit table has our one message right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Send without MRP.
err = newExchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendMessageFlags::kNoAutoRequestAck);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent, but not added to the retransmit table.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1 + (i + 1));
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
}
// Let's not drop the duplicate message's ack.
mockReceiver.SetDropAckResponse(false);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
// Wait for the first re-transmit and ack (should take 64ms)
rm->StartTimer();
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 3 + extraMessages; });
ctx.DrainAndServiceIO();
// Ensure the retransmit message was sent and the ack was sent
// and retransmit table was cleared
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 3 + extraMessages);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckResendSessionEstablishmentMessageWithPeerExchange(nlTestSuite * inSuite, void * inContext)
{
// Making this static to reduce stack usage, as some platforms have limits on stack size.
static Test::MessagingContext ctx;
TestContext & inctx = *static_cast<TestContext *>(inContext);
CHIP_ERROR err = ctx.InitFromExisting(inctx);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
MockSessionEstablishmentDelegate mockReceiver;
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockSessionEstablishmentDelegate mockSender;
ExchangeContext * exchange = ctx.NewUnauthenticatedExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsUnauthenticatedSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
// Let's drop the initial message
auto & loopback = inctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 1;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
inctx.DrainAndServiceIO();
// Ensure the message was dropped, and was added to retransmit table
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
// Wait for the first re-transmit (should take 64ms)
inctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 2; });
inctx.DrainAndServiceIO();
// Ensure the retransmit message was not dropped, and is no longer in the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount >= 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
mockReceiver.mTestSuite = nullptr;
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.ShutdownAndRestoreExisting(inctx);
}
void TestReliableMessageProtocol::CheckDuplicateMessage(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_RMP_DEFAULT_INITIAL_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_RMP_DEFAULT_ACTIVE_RETRY_INTERVAL
}));
// Let's not drop the message. Expectation is that it is received by the peer, but the ack is dropped
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
// Drop the ack, and keep the exchange around to receive the duplicate message
mockReceiver.SetDropAckResponse(true);
mockReceiver.mRetainExchange = true;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent
// The ack was dropped, and message was added to the retransmit table
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
// Let's not drop the duplicate message
mockReceiver.SetDropAckResponse(false);
mockReceiver.mRetainExchange = false;
// Wait for the first re-transmit and ack (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 3; });
ctx.DrainAndServiceIO();
// Ensure the retransmit message was sent and the ack was sent
// and retransmit table was cleared
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 3);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
mockReceiver.CloseExchangeIfNeeded();
}
void TestReliableMessageProtocol::CheckReceiveAfterStandaloneAck(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// We send a message, have it get received by the peer, then an ack is
// returned, then a reply is returned. We need to keep the receiver
// exchange alive until it does the message send (so we can send the
// response from the receiver and so the initial sender exchange can get
// it).
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
mockReceiver.mRetainExchange = true;
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
// And that we have not seen an ack yet.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
ReliableMessageContext * receiverRc = mockReceiver.mExchange->GetReliableMessageContext();
NL_TEST_ASSERT(inSuite, receiverRc->IsAckPending());
// Send the standalone ack.
receiverRc->SendStandaloneAckMessage();
ctx.DrainAndServiceIO();
// Ensure the ack was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Ensure that we have not gotten any app-level responses so far.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
// And that we have now gotten our ack.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// Now send a message from the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the response and its ack was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 4);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Ensure that we have received that response.
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckPiggybackAfterPiggyback(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// We send a message, have it get received by the peer, have the peer return
// a piggybacked ack. Then we send a second message this time _not_
// requesting an ack, get a response, and see whether an ack was
// piggybacked. We need to keep both exchanges alive for that (so we can
// send the response from the receiver and so the initial sender exchange
// can get it).
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
mockReceiver.mRetainExchange = true;
mockSender.mRetainExchange = true;
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
// And that we have not seen an ack yet.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
ReliableMessageContext * receiverRc = mockReceiver.mExchange->GetReliableMessageContext();
NL_TEST_ASSERT(inSuite, receiverRc->IsAckPending());
// Ensure that we have not gotten any app-level responses or acks so far.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.mReceivedPiggybackAck);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Now send a message from the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err =
mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer),
SendFlags(SendMessageFlags::kExpectResponse).Set(SendMessageFlags::kNoAutoRequestAck));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the response was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Ensure that we have received that response and it had a piggyback ack.
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, mockSender.mReceivedPiggybackAck);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// Reset various state so we can measure things again.
mockReceiver.IsOnMessageReceivedCalled = false;
mockSender.IsOnMessageReceivedCalled = false;
mockSender.mReceivedPiggybackAck = false;
// Now send a new message to the other side, but don't ask for an ack.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer),
SendFlags(SendMessageFlags::kExpectResponse).Set(SendMessageFlags::kNoAutoRequestAck));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 3);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
// And that we are not expecting an ack.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// Send the final response. At this point we don't need to keep the
// exchanges alive anymore.
mockReceiver.mRetainExchange = false;
mockSender.mRetainExchange = false;
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the response and its ack was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 5);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Ensure that we have received that response and it had a piggyback ack.
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, mockSender.mReceivedPiggybackAck);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckSendUnsolicitedStandaloneAckMessage(nlTestSuite * inSuite, void * inContext)
{
/**
* Tests sending a standalone ack message that is:
* 1) Unsolicited.
* 2) Requests an ack.
*
* This is not a thing that would normally happen, but a malicious entity
* could absolutely do this.
*/
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData("", 0);
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// We send a message, have it get received by the peer, expect an ack from
// the peer.
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
// Purposefully sending a standalone ack that requests an ack!
err = exchange->SendMessage(SecureChannel::MsgType::StandaloneAck, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
// Needs a manual close, because SendMessage does not close for standalone acks.
exchange->Close();
ctx.DrainAndServiceIO();
// Ensure the message and its ack were sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that nothing is waiting for acks.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckSendStandaloneAckMessage(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
MockAppDelegate mockAppDelegate(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockAppDelegate);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
ReliableMessageContext * rc = exchange->GetReliableMessageContext();
NL_TEST_ASSERT(inSuite, rm != nullptr);
NL_TEST_ASSERT(inSuite, rc != nullptr);
NL_TEST_ASSERT(inSuite, rc->SendStandaloneAckMessage() == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Need manual close because standalone acks don't close exchanges.
exchange->Close();
}
void TestReliableMessageProtocol::CheckMessageAfterClosed(nlTestSuite * inSuite, void * inContext)
{
/**
* This test performs the following sequence of actions, where all messages
* are sent with MRP enabled:
*
* 1) Initiator sends message to responder.
* 2) Responder responds to the message (piggybacking an ack) and closes
* the exchange.
* 3) Initiator sends a response to the response on the same exchange, again
* piggybacking an ack.
*
* This is basically the "command, response, status response" flow, with the
* responder closing the exchange after it sends the response.
*/
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
// We need to keep both exchanges alive for the thing we are testing here.
mockReceiver.mRetainExchange = true;
mockSender.mRetainExchange = true;
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockReceiver.mReceivedPiggybackAck);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockReceiver.mReceivedPiggybackAck);
// And that we have not seen an ack yet.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
ReliableMessageContext * receiverRc = mockReceiver.mExchange->GetReliableMessageContext();
NL_TEST_ASSERT(inSuite, receiverRc->IsAckPending());
// Ensure that we have not gotten any app-level responses or acks so far.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.mReceivedPiggybackAck);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Now send a message from the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the response was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Ensure that we have received that response and it had a piggyback ack.
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, mockSender.mReceivedPiggybackAck);
// And that we are now waiting for an ack for the response.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// Reset various state so we can measure things again.
mockReceiver.IsOnMessageReceivedCalled = false;
mockReceiver.mReceivedPiggybackAck = false;
mockSender.IsOnMessageReceivedCalled = false;
mockSender.mReceivedPiggybackAck = false;
// Now send a second message to the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent (and the ack for it was also sent).
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 4);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was not received (because the exchange is closed on the
// receiver).
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
// And that we are not expecting an ack; acks should have been flushed
// immediately on the receiver, due to the exchange being closed.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckLostResponseWithPiggyback(nlTestSuite * inSuite, void * inContext)
{
/**
* This tests the following scenario:
* 1) A reliable message is sent from initiator to responder.
* 2) The responder sends a response with a piggybacked ack, which is lost.
* 3) Initiator resends the message.
* 4) Responder responds to the resent message with a standalone ack.
* 5) The responder retransmits the application-level response.
* 4) The initiator should receive the application-level response.
*/
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// Make sure that we resend our message before the other side does.
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
64_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
64_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
// We send a message, the other side sends an application-level response
// (which is lost), then we do a retransmit that is acked, then the other
// side does a retransmit. We need to keep the receiver exchange alive (so
// we can send the response from the receiver), but don't need anything
// special for the sender exchange, because it will be waiting for the
// application-level response.
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
mockReceiver.mRetainExchange = true;
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
// And that we have not gotten any app-level responses or acks so far.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
ReliableMessageContext * receiverRc = mockReceiver.mExchange->GetReliableMessageContext();
// Should have pending ack here.
NL_TEST_ASSERT(inSuite, receiverRc->IsAckPending());
// Make sure receiver resends after sender does, and there's enough of a gap
// that we are very unlikely to actually trigger the resends on the receiver
// when we trigger the resends on the sender.
mockReceiver.mExchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
256_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
256_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
// Now send a message from the other side, but drop it.
loopback.mNumMessagesToDrop = 1;
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
// Stop keeping receiver exchange alive.
mockReceiver.mRetainExchange = true;
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the response was sent but dropped.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
// Ensure that we have not received that response.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.mReceivedPiggybackAck);
// We now have our un-acked message still waiting to retransmit and the
// message that the other side sent is waiting for an ack.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 2);
// Reset various state so we can measure things again.
mockReceiver.IsOnMessageReceivedCalled = false;
mockReceiver.mReceivedPiggybackAck = false;
mockSender.IsOnMessageReceivedCalled = false;
mockSender.mReceivedPiggybackAck = false;
// Wait for re-transmit from sender and ack (should take 64ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 4; });
ctx.DrainAndServiceIO();
// We resent our first message, which did not make it to the app-level
// listener on the receiver (because it's a duplicate) but did trigger a
// standalone ack.
//
// Now the annoying part is that depending on how long we _actually_ slept
// we might have also triggered the retransmit from the other side, even
// though we did not want to. Handle both cases here.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 4 || loopback.mSentMessageCount == 6);
if (loopback.mSentMessageCount == 4)
{
// Just triggered the retransmit from the sender.
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
}
else
{
// Also triggered the retransmit from the receiver.
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
// Wait for re-transmit from receiver (should take 256ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 6; });
ctx.DrainAndServiceIO();
// And now we've definitely resent our response message, which should show
// up as an app-level message and trigger a standalone ack.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 6);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
// Should be all done now.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckIsPeerActiveNotInitiator(nlTestSuite * inSuite, void * inContext)
{
/**
* This tests the following scenario:
* 1) A reliable message expecting a response is sent from the initiator to responder which is lost
* 2) Initiator resends the message at the IdleRetrans interval
* 3) Responder receives the message and sends a standalone ack
* 4) Responder sends a response and fails
* 5) Responder retries at the ActiveRestrans interval
* 6) Initiator receives the response
*/
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
1000_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
1000_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 1;
loopback.mDroppedMessageCount = 0;
mockReceiver.mRetainExchange = true;
mockSender.mRetainExchange = true;
NL_TEST_ASSERT(inSuite, !exchange->HasReceivedAtLeastOneMessage());
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Verify that the first message is dropped
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
// Make sure retransmit was not done before the idle restrans interval hits
ctx.GetIOContext().DriveIOUntil(500_ms32, [&] { return loopback.mSentMessageCount >= 1; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, !exchange->HasReceivedAtLeastOneMessage());
// // Make sure nothing happened
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
// // Retrasnmit message
ctx.GetIOContext().DriveIOUntil(2000_ms32, [&] { return loopback.mSentMessageCount >= 2; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, !exchange->HasReceivedAtLeastOneMessage());
// // Make sure nothing happened
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
// // Verify that the receiver considers the sender is active
NL_TEST_ASSERT(inSuite, !exchange->HasReceivedAtLeastOneMessage());
NL_TEST_ASSERT(inSuite, mockReceiver.mExchange->HasReceivedAtLeastOneMessage());
mockReceiver.mExchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
1000_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
100_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
mockReceiver.mRetainExchange = false;
mockSender.mRetainExchange = false;
// Now send a message from the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
// Make receiver message fail once
loopback.mNumMessagesToDrop = 1;
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Make sure nothing happened
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 3);
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
// // Retrasnmit message
ctx.GetIOContext().DriveIOUntil(500_ms32, [&] { return loopback.mSentMessageCount >= 4; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 5);
}
void TestReliableMessageProtocol::CheckLostStandaloneAck(nlTestSuite * inSuite, void * inContext)
{
/**
* This tests the following scenario:
* 1) A reliable message is sent from initiator to responder.
* 2) The responder sends a standalone ack, which is lost.
* 3) The responder sends an application-level response.
* 4) The initiator sends a reliable response to the app-level response.
*
* This should succeed, with all application-level messages being delivered
* and no crashes.
*/
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
CHIP_ERROR err = CHIP_NO_ERROR;
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
mockSender.mTestSuite = inSuite;
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
// We send a message, the other side sends a standalone ack first (which is
// lost), then an application response, then we respond to that response.
// We need to keep both exchanges alive for that (so we can send the
// response from the receiver and so the initial sender exchange can send a
// response to that).
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = 0;
loopback.mDroppedMessageCount = 0;
mockReceiver.mRetainExchange = true;
mockSender.mRetainExchange = true;
// And ensure the ack heading back our way is dropped.
mockReceiver.SetDropAckResponse(true);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
// And that we have not gotten any app-level responses or acks so far.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
ReliableMessageContext * receiverRc = mockReceiver.mExchange->GetReliableMessageContext();
// Ack should have been dropped.
NL_TEST_ASSERT(inSuite, !receiverRc->IsAckPending());
// Don't drop any more acks.
mockReceiver.SetDropAckResponse(false);
// Now send a message from the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer),
SendFlags(SendMessageFlags::kExpectResponse));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the response was sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 2);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// Ensure that we have received that response and had a piggyback ack.
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, mockSender.mReceivedPiggybackAck);
// We now have just the received message waiting for an ack.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
// And receiver still has no ack pending.
NL_TEST_ASSERT(inSuite, !receiverRc->IsAckPending());
// Reset various state so we can measure things again.
mockReceiver.IsOnMessageReceivedCalled = false;
mockReceiver.mReceivedPiggybackAck = false;
mockSender.IsOnMessageReceivedCalled = false;
mockSender.mReceivedPiggybackAck = false;
// Stop retaining the recipient exchange.
mockReceiver.mRetainExchange = false;
// Now send a new message to the other side.
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message and the standalone ack to it were sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 4);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 0);
// And that it was received.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, mockReceiver.mReceivedPiggybackAck);
// At this point all our exchanges and reliable message contexts should be
// dead, so we can't test anything about their state.
// And that there are no un-acked messages left.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
}
void TestReliableMessageProtocol::CheckGetBackoff(nlTestSuite * inSuite, void * inContext)
{
// Run 3x iterations to thoroughly test random jitter always results in backoff within bounds.
for (uint32_t j = 0; j < 3; j++)
{
for (const auto & test : theBackoffComplianceTestVector)
{
System::Clock::Timeout backoff = ReliableMessageMgr::GetBackoff(test.backoffBase, test.sendCount);
ChipLogProgress(Test, "Backoff base %" PRIu32 " # %d: %" PRIu32, test.backoffBase.count(), test.sendCount,
backoff.count());
NL_TEST_ASSERT(inSuite, backoff >= test.backoffMin);
auto maxBackoff = test.backoffMax + retryBoosterTimeout;
#if CHIP_CONFIG_ENABLE_ICD_SERVER == 1
// If running as an ICD, increase maxBackoff to account for the polling interval
maxBackoff += ICDConfigurationData::GetInstance().GetSlowPollingInterval();
#endif
NL_TEST_ASSERT(inSuite, backoff <= maxBackoff);
}
}
}
void TestReliableMessageProtocol::CheckApplicationResponseDelayed(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
CHIP_ERROR err = CHIP_NO_ERROR;
// Make sure we are using CASE sessions, because there is no defunct-marking for PASE.
ctx.ExpireSessionBobToAlice();
ctx.ExpireSessionAliceToBob();
err = ctx.CreateCASESessionBobToAlice();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
err = ctx.CreateCASESessionAliceToBob();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
mockReceiver.mRetainExchange = true;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
30_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
30_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
constexpr uint32_t kMaxMRPTransmits = 5; // Counting the initial message.
// Let's drop all but the last MRP transmit.
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = kMaxMRPTransmits - 1;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
exchange->SetResponseTimeout(3000_ms32);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendMessageFlags::kExpectResponse);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was dropped, and was added to retransmit table
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == kMaxMRPTransmits - 2);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
// Wait for all but the last retransmit to happen.
ctx.GetIOContext().DriveIOUntil(5000_ms32, [&] { return loopback.mDroppedMessageCount >= kMaxMRPTransmits - 1; });
ctx.DrainAndServiceIO();
// Ensure that nothing has been sent yet.
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
// Now allow through the next message (our last retransmit), but make sure
// there is no standalone ack for it.
mockReceiver.SetDropAckResponse(true);
ctx.GetIOContext().DriveIOUntil(5000_ms32, [&] { return loopback.mSentMessageCount >= kMaxMRPTransmits; });
ctx.DrainAndServiceIO();
// Verify that message was sent and received but nothing else has been sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1); // We have no ack yet.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got the message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We did not get a response.
// Ensure there will be no more weirdness with acks and that our MRP timer is restarted properly.
mockReceiver.SetDropAckResponse(false);
// Now send a response, but drop all but the last MRP retransmit.
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = kMaxMRPTransmits - 1;
loopback.mDroppedMessageCount = 0;
mockReceiver.mExchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
30_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
30_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
err = mockReceiver.mExchange->SendMessage(Echo::MsgType::EchoResponse, std::move(buffer));
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// At this point, we should have two MRP contexts pending.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 2); // We have no ack yet.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got original message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We did not get a response.
// Now wait for all but the last retransmit to happen from the other side.
ctx.GetIOContext().DriveIOUntil(5000_ms32, [&] { return loopback.mSentMessageCount >= kMaxMRPTransmits - 1; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
// We might have timed our MRP resends out, or not, but the other side is waiting for an ack.
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1 || rm->TestGetCountRetransTable() == 2);
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got original message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We did not get a response.
// Now wait for us to time out our MRP context for sure.
ctx.GetIOContext().DriveIOUntil(5000_ms32, [&] { return rm->TestGetCountRetransTable() == 1; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1); // We timed out our MRP context.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got original message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We did not get a response.
NL_TEST_ASSERT(inSuite, !mockSender.mResponseTimedOut); // We did not time out yet.
// Now wait for the last retransmit (and our ack) to to happen.
ctx.GetIOContext().DriveIOUntil(5000_ms32, [&] { return loopback.mSentMessageCount >= kMaxMRPTransmits; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits + 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0); // Everything has been acked.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got original message.
NL_TEST_ASSERT(inSuite, mockSender.IsOnMessageReceivedCalled); // We got the response.
NL_TEST_ASSERT(inSuite, !mockSender.mResponseTimedOut); // We did not time out yet.
mockReceiver.mTestSuite = nullptr;
// Ensure that we did not mark any sessions defunct.
NL_TEST_ASSERT(inSuite, !ctx.GetSessionBobToAlice()->AsSecureSession()->IsDefunct());
NL_TEST_ASSERT(inSuite, !ctx.GetSessionAliceToBob()->AsSecureSession()->IsDefunct());
// Reset our sessions, so other tests get the usual PASE session
ctx.ExpireSessionBobToAlice();
ctx.ExpireSessionAliceToBob();
err = ctx.CreateSessionBobToAlice();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
err = ctx.CreateSessionAliceToBob();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
}
void TestReliableMessageProtocol::CheckApplicationResponseNeverComes(nlTestSuite * inSuite, void * inContext)
{
TestContext & ctx = *reinterpret_cast<TestContext *>(inContext);
CHIP_ERROR err = CHIP_NO_ERROR;
// Make sure we are using CASE sessions, because there is no defunct-marking for PASE.
ctx.ExpireSessionBobToAlice();
ctx.ExpireSessionAliceToBob();
err = ctx.CreateCASESessionBobToAlice();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
err = ctx.CreateCASESessionAliceToBob();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
chip::System::PacketBufferHandle buffer = chip::MessagePacketBuffer::NewWithData(PAYLOAD, sizeof(PAYLOAD));
NL_TEST_ASSERT(inSuite, !buffer.IsNull());
MockAppDelegate mockReceiver(ctx);
err = ctx.GetExchangeManager().RegisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest, &mockReceiver);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
mockReceiver.mTestSuite = inSuite;
MockAppDelegate mockSender(ctx);
ExchangeContext * exchange = ctx.NewExchangeToAlice(&mockSender);
NL_TEST_ASSERT(inSuite, exchange != nullptr);
ReliableMessageMgr * rm = ctx.GetExchangeManager().GetReliableMessageMgr();
NL_TEST_ASSERT(inSuite, rm != nullptr);
exchange->GetSessionHandle()->AsSecureSession()->SetRemoteSessionParameters(ReliableMessageProtocolConfig({
30_ms32, // CHIP_CONFIG_MRP_LOCAL_IDLE_RETRY_INTERVAL
30_ms32, // CHIP_CONFIG_MRP_LOCAL_ACTIVE_RETRY_INTERVAL
}));
constexpr uint32_t kMaxMRPTransmits = 5; // Counting the initial message.
// Let's drop all but the last MRP transmit.
auto & loopback = ctx.GetLoopback();
loopback.mSentMessageCount = 0;
loopback.mNumMessagesToDrop = kMaxMRPTransmits - 1;
loopback.mDroppedMessageCount = 0;
// Ensure the retransmit table is empty right now
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
exchange->SetResponseTimeout(2500_ms32);
err = exchange->SendMessage(Echo::MsgType::EchoRequest, std::move(buffer), SendMessageFlags::kExpectResponse);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
// Ensure the message was dropped, and was added to retransmit table
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == kMaxMRPTransmits - 2);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
// Wait for all but the last retransmit to happen.
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mDroppedMessageCount >= kMaxMRPTransmits - 1; });
ctx.DrainAndServiceIO();
// Ensure that nothing has been sent yet.
NL_TEST_ASSERT(inSuite, loopback.mNumMessagesToDrop == 0);
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
NL_TEST_ASSERT(inSuite, !mockReceiver.IsOnMessageReceivedCalled);
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled);
// Now allow through the next message (our last retransmit), but make sure
// there is no standalone ack for it.
mockReceiver.SetDropAckResponse(true);
ctx.GetIOContext().DriveIOUntil(500_ms32, [&] { return loopback.mSentMessageCount >= kMaxMRPTransmits; });
ctx.DrainAndServiceIO();
// Verify that message was sent and received but nothing else has been sent.
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1); // We have no ack yet.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got the message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We did not get a response.
// Ensure there will be no more weirdness with acks and that our MRP timer is restarted properly.
mockReceiver.SetDropAckResponse(false);
// Now wait for us to time out our MRP context.
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return rm->TestGetCountRetransTable() == 0; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0); // We timed out our MRP context.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got original message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We did not get a response.
NL_TEST_ASSERT(inSuite, !mockSender.mResponseTimedOut); // We did not time out yet.
// Now wait for our exchange to time out.
ctx.GetIOContext().DriveIOUntil(3000_ms32, [&] { return mockSender.mResponseTimedOut; });
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(inSuite, loopback.mSentMessageCount == kMaxMRPTransmits);
NL_TEST_ASSERT(inSuite, loopback.mDroppedMessageCount == kMaxMRPTransmits - 1);
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0); // We timed this out long ago.
NL_TEST_ASSERT(inSuite, mockReceiver.IsOnMessageReceivedCalled); // Other side got original message.
NL_TEST_ASSERT(inSuite, !mockSender.IsOnMessageReceivedCalled); // We never got a response.
NL_TEST_ASSERT(inSuite, mockSender.mResponseTimedOut); // We tiemd out
mockReceiver.mTestSuite = nullptr;
// We should have marked out session defunct.
NL_TEST_ASSERT(inSuite, ctx.GetSessionBobToAlice()->AsSecureSession()->IsDefunct());
// Other side had no reason to mark its session defunct.
NL_TEST_ASSERT(inSuite, !ctx.GetSessionAliceToBob()->AsSecureSession()->IsDefunct());
// Reset our sessions, so other tests get the usual PASE session
ctx.ExpireSessionBobToAlice();
ctx.ExpireSessionAliceToBob();
err = ctx.CreateSessionBobToAlice();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
err = ctx.CreateSessionAliceToBob();
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
err = ctx.GetExchangeManager().UnregisterUnsolicitedMessageHandlerForType(Echo::MsgType::EchoRequest);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
}
int TestReliableMessageProtocol::InitializeTestCase(void * inContext)
{
TestContext & ctx = *static_cast<TestContext *>(inContext);
ctx.GetSessionAliceToBob()->AsSecureSession()->SetRemoteSessionParameters(GetLocalMRPConfig().ValueOr(GetDefaultMRPConfig()));
ctx.GetSessionBobToAlice()->AsSecureSession()->SetRemoteSessionParameters(GetLocalMRPConfig().ValueOr(GetDefaultMRPConfig()));
return SUCCESS;
}
/**
* TODO: A test that we should have but can't write with the existing
* infrastructure we have:
*
* 1. A sends message 1 to B
* 2. B is slow to respond, A does a resend and the resend is delayed in the network.
* 3. B responds with message 2, which acks message 1.
* 4. A sends message 3 to B
* 5. B sends standalone ack to message 3, which is lost
* 6. The duplicate message from step 3 is delivered and triggers a standalone ack.
* 7. B responds with message 4, which should carry a piggyback ack for message 3
* (this is the part that needs testing!)
* 8. A sends message 5 to B.
*/
const nlTest sTests[] = {
NL_TEST_DEF("Test ReliableMessageMgr::CheckAddClearRetrans", TestReliableMessageProtocol::CheckAddClearRetrans),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendApplicationMessage",
TestReliableMessageProtocol::CheckResendApplicationMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckCloseExchangeAndResendApplicationMessage",
TestReliableMessageProtocol::CheckCloseExchangeAndResendApplicationMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckFailedMessageRetainOnSend",
TestReliableMessageProtocol::CheckFailedMessageRetainOnSend),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendApplicationMessageWithPeerExchange",
TestReliableMessageProtocol::CheckResendApplicationMessageWithPeerExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendSessionEstablishmentMessageWithPeerExchange",
TestReliableMessageProtocol::CheckResendSessionEstablishmentMessageWithPeerExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckDuplicateMessage", TestReliableMessageProtocol::CheckDuplicateMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckDuplicateMessageClosedExchange",
TestReliableMessageProtocol::CheckDuplicateMessageClosedExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckDuplicateOldMessageClosedExchange",
TestReliableMessageProtocol::CheckDuplicateOldMessageClosedExchange),
NL_TEST_DEF("Test that a reply after a standalone ack comes through correctly",
TestReliableMessageProtocol::CheckReceiveAfterStandaloneAck),
NL_TEST_DEF("Test that a reply to a non-MRP message piggybacks an ack if there were MRP things happening on the context before",
TestReliableMessageProtocol::CheckPiggybackAfterPiggyback),
NL_TEST_DEF("Test sending an unsolicited ack-soliciting 'standalone ack' message",
TestReliableMessageProtocol::CheckSendUnsolicitedStandaloneAckMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckSendStandaloneAckMessage",
TestReliableMessageProtocol::CheckSendStandaloneAckMessage),
NL_TEST_DEF("Test command, response, default response, with receiver closing exchange after sending response",
TestReliableMessageProtocol::CheckMessageAfterClosed),
NL_TEST_DEF("Test that unencrypted message is dropped if exchange requires encryption",
TestReliableMessageProtocol::CheckUnencryptedMessageReceiveFailure),
NL_TEST_DEF("Test that dropping an application-level message with a piggyback ack works ok once both sides retransmit",
TestReliableMessageProtocol::CheckLostResponseWithPiggyback),
NL_TEST_DEF("Test that an application-level response-to-response after a lost standalone ack to the initial message works",
TestReliableMessageProtocol::CheckLostStandaloneAck),
NL_TEST_DEF("Test Is Peer Active Retry logic", TestReliableMessageProtocol::CheckIsPeerActiveNotInitiator),
NL_TEST_DEF("Test MRP backoff algorithm", TestReliableMessageProtocol::CheckGetBackoff),
NL_TEST_DEF("Test an application response that comes after MRP retransmits run out",
TestReliableMessageProtocol::CheckApplicationResponseDelayed),
NL_TEST_DEF("Test an application response that never comes, so MRP retransmits run out and then exchange times out",
TestReliableMessageProtocol::CheckApplicationResponseNeverComes),
NL_TEST_SENTINEL(),
};
// clang-format off
nlTestSuite sSuite = {
"Test-CHIP-ReliableMessageProtocol",
&sTests[0],
TestContext::Initialize,
TestContext::Finalize,
TestReliableMessageProtocol::InitializeTestCase,
};
// clang-format on
int TestReliableMessageProtocolSuite()
{
return chip::ExecuteTestsWithContext<TestContext>(&sSuite);
}
CHIP_REGISTER_TEST_SUITE(TestReliableMessageProtocolSuite)