100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/*
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* Copyright (c) 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/traffic_route.h"
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#include <algorithm>
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#include <memory>
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#include <utility>
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#include "absl/types/optional.h"
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#include "rtc_base/logging.h"
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#include "rtc_base/numerics/safe_minmax.h"
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namespace webrtc {
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namespace test {
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namespace {
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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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ActionReceiver(std::function<void()> action, EmulatedEndpoint* endpoint)
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: action_(action), endpoint_(endpoint) {}
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~ActionReceiver() override = default;
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void OnPacketReceived(EmulatedIpPacket packet) override {
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RTC_DCHECK(port_);
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action_();
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endpoint_->UnbindReceiver(port_.value());
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}
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// We can't set port in constructor, because port will be provided by
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// endpoint, when this receiver will be binded to that endpoint.
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void SetPort(uint16_t port) { port_ = port; }
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private:
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std::function<void()> action_;
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// Endpoint and port will be used to free port in the endpoint after action
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// will be done.
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EmulatedEndpoint* endpoint_;
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absl::optional<uint16_t> port_ = absl::nullopt;
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};
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} // namespace
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TrafficRoute::TrafficRoute(Clock* clock,
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EmulatedNetworkReceiverInterface* receiver,
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EmulatedEndpoint* endpoint)
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: clock_(clock), receiver_(receiver), endpoint_(endpoint) {
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null_receiver_ = std::make_unique<NullReceiver>();
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absl::optional<uint16_t> port =
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endpoint_->BindReceiver(0, null_receiver_.get());
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RTC_DCHECK(port);
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null_receiver_port_ = port.value();
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}
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TrafficRoute::~TrafficRoute() = default;
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void TrafficRoute::TriggerPacketBurst(size_t num_packets, size_t packet_size) {
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for (size_t i = 0; i < num_packets; ++i) {
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SendPacket(packet_size);
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}
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}
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void TrafficRoute::NetworkDelayedAction(size_t packet_size,
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std::function<void()> action) {
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auto action_receiver = std::make_unique<ActionReceiver>(action, endpoint_);
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absl::optional<uint16_t> port =
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endpoint_->BindReceiver(0, action_receiver.get());
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RTC_DCHECK(port);
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action_receiver->SetPort(port.value());
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actions_.push_back(std::move(action_receiver));
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SendPacket(packet_size, port.value());
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}
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void TrafficRoute::SendPacket(size_t packet_size) {
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SendPacket(packet_size, null_receiver_port_);
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}
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void TrafficRoute::SendPacket(size_t packet_size, uint16_t dest_port) {
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rtc::CopyOnWriteBuffer data(packet_size);
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std::fill_n(data.data<uint8_t>(), data.size(), 0);
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receiver_->OnPacketReceived(EmulatedIpPacket(
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/*from=*/rtc::SocketAddress(),
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rtc::SocketAddress(endpoint_->GetPeerLocalAddress(), dest_port), data,
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clock_->CurrentTime()));
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}
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} // namespace test
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} // namespace webrtc
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