5811a39f14
Makes use of rtc::Event which is simpler and can be used without allocating additional objects on the heap. Does not modify test/channel_transport/. BUG= R=mflodman@webrtc.org Review URL: https://codereview.webrtc.org/1487893004 . Cr-Commit-Position: refs/heads/master@{#10968}
95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/*
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* Copyright (c) 2012 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 WEBRTC_TEST_FAKE_NETWORK_PIPE_H_
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#define WEBRTC_TEST_FAKE_NETWORK_PIPE_H_
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#include <queue>
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#include "webrtc/base/constructormagic.h"
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#include "webrtc/base/criticalsection.h"
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#include "webrtc/base/scoped_ptr.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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class Clock;
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class CriticalSectionWrapper;
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class NetworkPacket;
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class PacketReceiver;
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// Class faking a network link. This is a simple and naive solution just faking
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// capacity and adding an extra transport delay in addition to the capacity
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// introduced delay.
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// TODO(mflodman) Add random and bursty packet loss.
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class FakeNetworkPipe {
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public:
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struct Config {
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Config() {}
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// Queue length in number of packets.
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size_t queue_length_packets = 0;
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// Delay in addition to capacity induced delay.
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int queue_delay_ms = 0;
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// Standard deviation of the extra delay.
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int delay_standard_deviation_ms = 0;
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// Link capacity in kbps.
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int link_capacity_kbps = 0;
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// Random packet loss.
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int loss_percent = 0;
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};
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FakeNetworkPipe(Clock* clock, const FakeNetworkPipe::Config& config);
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~FakeNetworkPipe();
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// Must not be called in parallel with SendPacket or Process.
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void SetReceiver(PacketReceiver* receiver);
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// Sets a new configuration. This won't affect packets already in the pipe.
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void SetConfig(const FakeNetworkPipe::Config& config);
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// Sends a new packet to the link.
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void SendPacket(const uint8_t* packet, size_t packet_length);
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// Processes the network queues and trigger PacketReceiver::IncomingPacket for
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// packets ready to be delivered.
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void Process();
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int64_t TimeUntilNextProcess() const;
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// Get statistics.
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float PercentageLoss();
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int AverageDelay();
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size_t dropped_packets() { return dropped_packets_; }
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size_t sent_packets() { return sent_packets_; }
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private:
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Clock* const clock_;
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mutable rtc::CriticalSection lock_;
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PacketReceiver* packet_receiver_;
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std::queue<NetworkPacket*> capacity_link_;
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std::queue<NetworkPacket*> delay_link_;
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// Link configuration.
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Config config_;
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// Statistics.
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size_t dropped_packets_;
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size_t sent_packets_;
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int total_packet_delay_;
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int64_t next_process_time_;
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RTC_DISALLOW_COPY_AND_ASSIGN(FakeNetworkPipe);
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};
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} // namespace webrtc
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#endif // WEBRTC_TEST_FAKE_NETWORK_PIPE_H_
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