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Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler_test.cc')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler_test.cc | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler_test.cc b/third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler_test.cc new file mode 100644 index 0000000000..faa0e3da06 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler_test.cc @@ -0,0 +1,184 @@ +/* + * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ +#include "net/dcsctp/socket/heartbeat_handler.h" + +#include <memory> +#include <utility> +#include <vector> + +#include "api/task_queue/task_queue_base.h" +#include "net/dcsctp/packet/chunk/heartbeat_ack_chunk.h" +#include "net/dcsctp/packet/chunk/heartbeat_request_chunk.h" +#include "net/dcsctp/packet/parameter/heartbeat_info_parameter.h" +#include "net/dcsctp/public/types.h" +#include "net/dcsctp/socket/mock_context.h" +#include "net/dcsctp/testing/testing_macros.h" +#include "rtc_base/gunit.h" +#include "test/gmock.h" + +namespace dcsctp { +namespace { +using ::testing::ElementsAre; +using ::testing::IsEmpty; +using ::testing::NiceMock; +using ::testing::Return; +using ::testing::SizeIs; + +constexpr DurationMs kHeartbeatInterval = DurationMs(30'000); + +DcSctpOptions MakeOptions(DurationMs heartbeat_interval) { + DcSctpOptions options; + options.heartbeat_interval_include_rtt = false; + options.heartbeat_interval = heartbeat_interval; + return options; +} + +class HeartbeatHandlerTestBase : public testing::Test { + protected: + explicit HeartbeatHandlerTestBase(DurationMs heartbeat_interval) + : options_(MakeOptions(heartbeat_interval)), + context_(&callbacks_), + timer_manager_([this](webrtc::TaskQueueBase::DelayPrecision precision) { + return callbacks_.CreateTimeout(precision); + }), + handler_("log: ", options_, &context_, &timer_manager_) {} + + void AdvanceTime(DurationMs duration) { + callbacks_.AdvanceTime(duration); + for (;;) { + absl::optional<TimeoutID> timeout_id = callbacks_.GetNextExpiredTimeout(); + if (!timeout_id.has_value()) { + break; + } + timer_manager_.HandleTimeout(*timeout_id); + } + } + + const DcSctpOptions options_; + NiceMock<MockDcSctpSocketCallbacks> callbacks_; + NiceMock<MockContext> context_; + TimerManager timer_manager_; + HeartbeatHandler handler_; +}; + +class HeartbeatHandlerTest : public HeartbeatHandlerTestBase { + protected: + HeartbeatHandlerTest() : HeartbeatHandlerTestBase(kHeartbeatInterval) {} +}; + +class DisabledHeartbeatHandlerTest : public HeartbeatHandlerTestBase { + protected: + DisabledHeartbeatHandlerTest() : HeartbeatHandlerTestBase(DurationMs(0)) {} +}; + +TEST_F(HeartbeatHandlerTest, HasRunningHeartbeatIntervalTimer) { + AdvanceTime(options_.heartbeat_interval); + + // Validate that a heartbeat request was sent. + std::vector<uint8_t> payload = callbacks_.ConsumeSentPacket(); + ASSERT_HAS_VALUE_AND_ASSIGN(SctpPacket packet, SctpPacket::Parse(payload)); + ASSERT_THAT(packet.descriptors(), SizeIs(1)); + + ASSERT_HAS_VALUE_AND_ASSIGN( + HeartbeatRequestChunk request, + HeartbeatRequestChunk::Parse(packet.descriptors()[0].data)); + + EXPECT_TRUE(request.info().has_value()); +} + +TEST_F(HeartbeatHandlerTest, RepliesToHeartbeatRequests) { + uint8_t info_data[] = {1, 2, 3, 4, 5}; + HeartbeatRequestChunk request( + Parameters::Builder().Add(HeartbeatInfoParameter(info_data)).Build()); + + handler_.HandleHeartbeatRequest(std::move(request)); + + std::vector<uint8_t> payload = callbacks_.ConsumeSentPacket(); + ASSERT_HAS_VALUE_AND_ASSIGN(SctpPacket packet, SctpPacket::Parse(payload)); + ASSERT_THAT(packet.descriptors(), SizeIs(1)); + + ASSERT_HAS_VALUE_AND_ASSIGN( + HeartbeatAckChunk response, + HeartbeatAckChunk::Parse(packet.descriptors()[0].data)); + + ASSERT_HAS_VALUE_AND_ASSIGN( + HeartbeatInfoParameter param, + response.parameters().get<HeartbeatInfoParameter>()); + + EXPECT_THAT(param.info(), ElementsAre(1, 2, 3, 4, 5)); +} + +TEST_F(HeartbeatHandlerTest, SendsHeartbeatRequestsOnIdleChannel) { + AdvanceTime(options_.heartbeat_interval); + + // Grab the request, and make a response. + std::vector<uint8_t> payload = callbacks_.ConsumeSentPacket(); + ASSERT_HAS_VALUE_AND_ASSIGN(SctpPacket packet, SctpPacket::Parse(payload)); + ASSERT_THAT(packet.descriptors(), SizeIs(1)); + + ASSERT_HAS_VALUE_AND_ASSIGN( + HeartbeatRequestChunk req, + HeartbeatRequestChunk::Parse(packet.descriptors()[0].data)); + + HeartbeatAckChunk ack(std::move(req).extract_parameters()); + + // Respond a while later. This RTT will be measured by the handler + constexpr DurationMs rtt(313); + + EXPECT_CALL(context_, ObserveRTT(rtt)).Times(1); + + callbacks_.AdvanceTime(rtt); + handler_.HandleHeartbeatAck(std::move(ack)); +} + +TEST_F(HeartbeatHandlerTest, DoesntObserveInvalidHeartbeats) { + AdvanceTime(options_.heartbeat_interval); + + // Grab the request, and make a response. + std::vector<uint8_t> payload = callbacks_.ConsumeSentPacket(); + ASSERT_HAS_VALUE_AND_ASSIGN(SctpPacket packet, SctpPacket::Parse(payload)); + ASSERT_THAT(packet.descriptors(), SizeIs(1)); + + ASSERT_HAS_VALUE_AND_ASSIGN( + HeartbeatRequestChunk req, + HeartbeatRequestChunk::Parse(packet.descriptors()[0].data)); + + HeartbeatAckChunk ack(std::move(req).extract_parameters()); + + EXPECT_CALL(context_, ObserveRTT).Times(0); + + // Go backwards in time - which make the HEARTBEAT-ACK have an invalid + // timestamp in it, as it will be in the future. + callbacks_.AdvanceTime(DurationMs(-100)); + + handler_.HandleHeartbeatAck(std::move(ack)); +} + +TEST_F(HeartbeatHandlerTest, IncreasesErrorIfNotAckedInTime) { + DurationMs rto(105); + EXPECT_CALL(context_, current_rto).WillOnce(Return(rto)); + AdvanceTime(options_.heartbeat_interval); + + // Validate that a request was sent. + EXPECT_THAT(callbacks_.ConsumeSentPacket(), Not(IsEmpty())); + + EXPECT_CALL(context_, IncrementTxErrorCounter).Times(1); + AdvanceTime(rto); +} + +TEST_F(DisabledHeartbeatHandlerTest, IsReallyDisabled) { + AdvanceTime(options_.heartbeat_interval); + + // Validate that a request was NOT sent. + EXPECT_THAT(callbacks_.ConsumeSentPacket(), IsEmpty()); +} + +} // namespace +} // namespace dcsctp |