| /* |
| * Copyright 2019 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 <atomic> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "absl/memory/memory.h" |
| #include "api/test/simulated_network.h" |
| #include "call/simulated_network.h" |
| #include "rtc_base/event.h" |
| #include "rtc_base/logging.h" |
| #include "test/gmock.h" |
| #include "test/gtest.h" |
| #include "test/scenario/network/cross_traffic.h" |
| #include "test/scenario/network/network_emulation.h" |
| #include "test/scenario/network/network_emulation_manager.h" |
| |
| namespace webrtc { |
| namespace test { |
| namespace { |
| |
| class CountingBehavior : public NetworkBehaviorInterface { |
| public: |
| bool EnqueuePacket(PacketInFlightInfo packet_info) override { |
| packets_to_send_.push_back(packet_info); |
| return true; |
| } |
| |
| std::vector<PacketDeliveryInfo> DequeueDeliverablePackets( |
| int64_t receive_time_us) override { |
| std::vector<PacketDeliveryInfo> out; |
| for (auto packet : packets_to_send_) { |
| // we want to count packets, that went through this behavior. |
| packets_count_++; |
| total_packets_size_ += packet.size; |
| out.push_back(PacketDeliveryInfo(packet, receive_time_us)); |
| } |
| packets_to_send_.clear(); |
| return out; |
| } |
| |
| absl::optional<int64_t> NextDeliveryTimeUs() const override { return 1000; } |
| |
| int packets_count() const { return packets_count_; } |
| uint64_t total_packets_size() const { return total_packets_size_; } |
| |
| private: |
| std::vector<PacketInFlightInfo> packets_to_send_; |
| |
| std::atomic<int> packets_count_{0}; |
| std::atomic<uint64_t> total_packets_size_{0}; |
| }; |
| |
| } // namespace |
| |
| TEST(CrossTrafficTest, TriggerPacketBurst) { |
| NetworkEmulationManagerImpl network_manager; |
| |
| std::unique_ptr<CountingBehavior> behavior = |
| absl::make_unique<CountingBehavior>(); |
| CountingBehavior* counter = behavior.get(); |
| |
| EmulatedNetworkNode* node_a = network_manager.CreateEmulatedNode( |
| absl::make_unique<SimulatedNetwork>(BuiltInNetworkBehaviorConfig())); |
| EmulatedNetworkNode* node_b = |
| network_manager.CreateEmulatedNode(std::move(behavior)); |
| |
| TrafficRoute* traffic = network_manager.CreateTrafficRoute({node_a, node_b}); |
| |
| traffic->TriggerPacketBurst(100, 1000); |
| |
| rtc::Event event; |
| event.Wait(1000); |
| |
| EXPECT_EQ(counter->packets_count(), 100); |
| EXPECT_EQ(counter->total_packets_size(), 100 * 1000ul); |
| } |
| |
| TEST(CrossTrafficTest, PulsedPeaksCrossTraffic) { |
| NetworkEmulationManagerImpl network_manager; |
| |
| std::unique_ptr<CountingBehavior> behavior = |
| absl::make_unique<CountingBehavior>(); |
| CountingBehavior* counter = behavior.get(); |
| |
| EmulatedNetworkNode* node_a = network_manager.CreateEmulatedNode( |
| absl::make_unique<SimulatedNetwork>(BuiltInNetworkBehaviorConfig())); |
| EmulatedNetworkNode* node_b = |
| network_manager.CreateEmulatedNode(std::move(behavior)); |
| |
| PulsedPeaksConfig config; |
| config.peak_rate = DataRate::kbps(1000); |
| config.min_packet_size = DataSize::bytes(1); |
| config.min_packet_interval = TimeDelta::ms(25); |
| config.send_duration = TimeDelta::ms(500); |
| config.hold_duration = TimeDelta::ms(250); |
| TrafficRoute* traffic = network_manager.CreateTrafficRoute({node_a, node_b}); |
| network_manager.CreatePulsedPeaksCrossTraffic(traffic, config); |
| const auto kRunTime = TimeDelta::seconds(1); |
| |
| rtc::Event event; |
| event.Wait(kRunTime.ms()); |
| |
| RTC_LOG(INFO) << counter->packets_count() << " packets; " |
| << counter->total_packets_size() << " bytes"; |
| // Using 50% duty cycle. |
| const auto kExpectedDataSent = kRunTime * config.peak_rate * 0.5; |
| EXPECT_NEAR(counter->total_packets_size(), kExpectedDataSent.bytes(), |
| kExpectedDataSent.bytes() * 0.1); |
| } |
| |
| TEST(CrossTrafficTest, RandomWalkCrossTraffic) { |
| NetworkEmulationManagerImpl network_manager; |
| |
| std::unique_ptr<CountingBehavior> behavior = |
| absl::make_unique<CountingBehavior>(); |
| CountingBehavior* counter = behavior.get(); |
| |
| EmulatedNetworkNode* node_a = network_manager.CreateEmulatedNode( |
| absl::make_unique<SimulatedNetwork>(BuiltInNetworkBehaviorConfig())); |
| EmulatedNetworkNode* node_b = |
| network_manager.CreateEmulatedNode(std::move(behavior)); |
| |
| RandomWalkConfig config; |
| config.peak_rate = DataRate::kbps(1000); |
| config.min_packet_size = DataSize::bytes(1); |
| config.min_packet_interval = TimeDelta::ms(25); |
| config.update_interval = TimeDelta::ms(500); |
| config.variance = 0.0; |
| config.bias = 1.0; |
| TrafficRoute* traffic = network_manager.CreateTrafficRoute({node_a, node_b}); |
| network_manager.CreateRandomWalkCrossTraffic(traffic, config); |
| const auto kRunTime = TimeDelta::seconds(1); |
| |
| rtc::Event event; |
| event.Wait(kRunTime.ms()); |
| |
| RTC_LOG(INFO) << counter->packets_count() << " packets; " |
| << counter->total_packets_size() << " bytes"; |
| // Sending at peak rate since bias = 1. |
| const auto kExpectedDataSent = kRunTime * config.peak_rate; |
| EXPECT_NEAR(counter->total_packets_size(), kExpectedDataSent.bytes(), |
| kExpectedDataSent.bytes() * 0.1); |
| } |
| |
| } // namespace test |
| } // namespace webrtc |