4124dab7f3
The has some benefits: * We no longer need locks to protect the emulated network node state. * We only process when there are packets in flight. * It makes Scenario more similar to network emulation manager. Bug: webrtc:10365 Change-Id: I8bd1ad1edfb54b047e8109dabd9846ae451cef17 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/127548 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27393}
131 lines
4.2 KiB
C++
131 lines
4.2 KiB
C++
/*
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* Copyright 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef TEST_SCENARIO_NETWORK_NODE_H_
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#define TEST_SCENARIO_NETWORK_NODE_H_
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#include <deque>
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#include <map>
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#include <memory>
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#include <utility>
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#include <vector>
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#include "api/call/transport.h"
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#include "api/units/timestamp.h"
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#include "call/call.h"
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#include "call/simulated_network.h"
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#include "rtc_base/constructor_magic.h"
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#include "rtc_base/copy_on_write_buffer.h"
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#include "rtc_base/task_queue.h"
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#include "test/scenario/column_printer.h"
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#include "test/scenario/network/network_emulation.h"
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#include "test/scenario/scenario_config.h"
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namespace webrtc {
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namespace test {
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class NullReceiver : public EmulatedNetworkReceiverInterface {
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public:
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void OnPacketReceived(EmulatedIpPacket packet) override;
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};
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class ActionReceiver : public EmulatedNetworkReceiverInterface {
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public:
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explicit ActionReceiver(std::function<void()> action);
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virtual ~ActionReceiver() = default;
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void OnPacketReceived(EmulatedIpPacket packet) override;
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private:
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std::function<void()> action_;
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};
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// SimulationNode is a EmulatedNetworkNode that expose an interface for changing
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// run time behavior of the underlying simulation.
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class SimulationNode : public EmulatedNetworkNode {
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public:
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void UpdateConfig(std::function<void(NetworkNodeConfig*)> modifier);
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void PauseTransmissionUntil(Timestamp until);
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ColumnPrinter ConfigPrinter() const;
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private:
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friend class Scenario;
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SimulationNode(Clock* clock,
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rtc::TaskQueue* task_queue,
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NetworkNodeConfig config,
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std::unique_ptr<NetworkBehaviorInterface> behavior,
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SimulatedNetwork* simulation);
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static std::unique_ptr<SimulationNode> Create(Clock* clock,
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rtc::TaskQueue* task_queue,
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NetworkNodeConfig config);
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SimulatedNetwork* const simulated_network_;
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NetworkNodeConfig config_;
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};
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class NetworkNodeTransport : public Transport {
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public:
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NetworkNodeTransport(Clock* sender_clock, Call* sender_call);
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~NetworkNodeTransport() override;
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bool SendRtp(const uint8_t* packet,
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size_t length,
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const PacketOptions& options) override;
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bool SendRtcp(const uint8_t* packet, size_t length) override;
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void Connect(EmulatedNetworkNode* send_node,
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rtc::IPAddress receiver_ip,
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DataSize packet_overhead);
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void Disconnect();
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DataSize packet_overhead() {
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rtc::CritScope crit(&crit_sect_);
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return packet_overhead_;
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}
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private:
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rtc::CriticalSection crit_sect_;
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Clock* const sender_clock_;
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Call* const sender_call_;
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// Store local address here for consistency with receiver address.
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const rtc::SocketAddress local_address_;
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EmulatedNetworkNode* send_net_ RTC_GUARDED_BY(crit_sect_) = nullptr;
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rtc::SocketAddress receiver_address_ RTC_GUARDED_BY(crit_sect_);
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DataSize packet_overhead_ RTC_GUARDED_BY(crit_sect_) = DataSize::Zero();
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rtc::NetworkRoute current_network_route_ RTC_GUARDED_BY(crit_sect_);
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};
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// CrossTrafficSource is created by a Scenario and generates cross traffic. It
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// provides methods to access and print internal state.
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class CrossTrafficSource {
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public:
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DataRate TrafficRate() const;
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ColumnPrinter StatsPrinter();
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~CrossTrafficSource();
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private:
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friend class Scenario;
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CrossTrafficSource(EmulatedNetworkReceiverInterface* target,
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rtc::IPAddress receiver_ip,
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CrossTrafficConfig config);
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void Process(Timestamp at_time, TimeDelta delta);
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EmulatedNetworkReceiverInterface* const target_;
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const rtc::SocketAddress receiver_address_;
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CrossTrafficConfig config_;
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webrtc::Random random_;
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TimeDelta time_since_update_ = TimeDelta::Zero();
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double intensity_ = 0;
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DataSize pending_size_ = DataSize::Zero();
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};
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} // namespace test
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} // namespace webrtc
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#endif // TEST_SCENARIO_NETWORK_NODE_H_
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