1ca57b9015
Feedback can include lost packets. Ensure FeedbackGenerator support lost packets to be able to use this class properly when testing with loss. Bug: none Change-Id: Ibd740dfae358c0543fbee62cd40ef13a7ac1123f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/247372 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35740}
112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/*
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* Copyright 2019 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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#include "test/network/feedback_generator.h"
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#include "absl/memory/memory.h"
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#include "api/transport/network_types.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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FeedbackGeneratorImpl::FeedbackGeneratorImpl(
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FeedbackGeneratorImpl::Config config)
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: conf_(config),
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net_(TimeMode::kSimulated),
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send_link_{new SimulatedNetwork(conf_.send_link)},
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ret_link_{new SimulatedNetwork(conf_.return_link)},
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route_(this,
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net_.CreateRoute(
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{net_.CreateEmulatedNode(absl::WrapUnique(send_link_))}),
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net_.CreateRoute(
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{net_.CreateEmulatedNode(absl::WrapUnique(ret_link_))})) {}
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Timestamp FeedbackGeneratorImpl::Now() {
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return net_.Now();
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}
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void FeedbackGeneratorImpl::Sleep(TimeDelta duration) {
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net_.time_controller()->AdvanceTime(duration);
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}
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void FeedbackGeneratorImpl::SendPacket(size_t size) {
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SentPacket sent;
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sent.send_time = Now();
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sent.size = DataSize::Bytes(size);
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sent.sequence_number = sequence_number_++;
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sent_packets_.push(sent);
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route_.SendRequest(size, sent);
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}
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std::vector<TransportPacketsFeedback> FeedbackGeneratorImpl::PopFeedback() {
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std::vector<TransportPacketsFeedback> ret;
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ret.swap(feedback_);
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return ret;
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}
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void FeedbackGeneratorImpl::SetSendConfig(BuiltInNetworkBehaviorConfig config) {
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conf_.send_link = config;
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send_link_->SetConfig(conf_.send_link);
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}
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void FeedbackGeneratorImpl::SetReturnConfig(
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BuiltInNetworkBehaviorConfig config) {
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conf_.return_link = config;
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ret_link_->SetConfig(conf_.return_link);
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}
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void FeedbackGeneratorImpl::SetSendLinkCapacity(DataRate capacity) {
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conf_.send_link.link_capacity_kbps = capacity.kbps<int>();
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send_link_->SetConfig(conf_.send_link);
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}
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void FeedbackGeneratorImpl::OnRequest(SentPacket packet,
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Timestamp arrival_time) {
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PacketResult result;
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result.sent_packet = packet;
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result.receive_time = arrival_time;
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received_packets_.push_back(result);
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Timestamp first_recv = received_packets_.front().receive_time;
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if (Now() - first_recv > conf_.feedback_interval) {
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route_.SendResponse(conf_.feedback_packet_size.bytes<size_t>(),
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std::move(received_packets_));
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received_packets_ = {};
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}
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}
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void FeedbackGeneratorImpl::OnResponse(std::vector<PacketResult> packet_results,
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Timestamp arrival_time) {
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TransportPacketsFeedback feedback;
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feedback.feedback_time = arrival_time;
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std::vector<PacketResult>::const_iterator received_packet_iterator =
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packet_results.begin();
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while (received_packet_iterator != packet_results.end()) {
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RTC_DCHECK(!sent_packets_.empty() &&
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sent_packets_.front().sequence_number <=
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received_packet_iterator->sent_packet.sequence_number)
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<< "reordering not implemented";
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if (sent_packets_.front().sequence_number <
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received_packet_iterator->sent_packet.sequence_number) {
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// Packet lost.
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PacketResult lost;
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lost.sent_packet = sent_packets_.front();
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feedback.packet_feedbacks.push_back(lost);
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}
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if (sent_packets_.front().sequence_number ==
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received_packet_iterator->sent_packet.sequence_number) {
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feedback.packet_feedbacks.push_back(*received_packet_iterator);
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++received_packet_iterator;
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}
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sent_packets_.pop();
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}
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feedback_.push_back(feedback);
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}
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} // namespace webrtc
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