fb62f90706
This is preparatory to ensuring that transport-cc gets turned off when RFC8888 ccfb is negotiated. Bug: webrtc:378698658 Change-Id: Ie76677bd6aa046701562bbd93d8489858488f863 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/368543 Reviewed-by: Per Kjellander <perkj@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43426}
108 lines
4.0 KiB
C++
108 lines
4.0 KiB
C++
/*
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* Copyright 2024 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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// This file contains tests that verify that congestion control options
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// are correctly negotiated in the SDP offer/answer.
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#include <string>
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#include "absl/strings/str_cat.h"
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#include "api/peer_connection_interface.h"
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#include "pc/test/integration_test_helpers.h"
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#include "rtc_base/gunit.h"
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#include "test/field_trial.h"
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#include "test/gmock.h"
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#include "test/gtest.h"
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namespace webrtc {
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using testing::Eq;
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using testing::HasSubstr;
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class PeerConnectionCongestionControlTest
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: public PeerConnectionIntegrationBaseTest {
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public:
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PeerConnectionCongestionControlTest()
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: PeerConnectionIntegrationBaseTest(SdpSemantics::kUnifiedPlan) {}
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};
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TEST_F(PeerConnectionCongestionControlTest, OfferContainsCcfbIfEnabled) {
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test::ScopedFieldTrials trials(
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"WebRTC-RFC8888CongestionControlFeedback/Enabled/");
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ASSERT_TRUE(CreatePeerConnectionWrappers());
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caller()->AddAudioVideoTracks();
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auto offer = caller()->CreateOfferAndWait();
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std::string offer_str = absl::StrCat(*offer);
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EXPECT_THAT(offer_str, HasSubstr("a=rtcp-fb:* ack ccfb\r\n"));
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}
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TEST_F(PeerConnectionCongestionControlTest, ReceiveOfferSetsCcfbFlag) {
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test::ScopedFieldTrials trials(
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"WebRTC-RFC8888CongestionControlFeedback/Enabled/");
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ASSERT_TRUE(CreatePeerConnectionWrappers());
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ConnectFakeSignalingForSdpOnly();
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caller()->AddAudioVideoTracks();
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caller()->CreateAndSetAndSignalOffer();
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ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
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// Check that the callee parsed it.
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auto parsed_contents =
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callee()->pc()->remote_description()->description()->contents();
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EXPECT_FALSE(parsed_contents.empty());
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for (const auto& content : parsed_contents) {
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EXPECT_TRUE(content.media_description()->rtcp_fb_ack_ccfb());
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}
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// Check that the caller also parsed it.
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parsed_contents =
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caller()->pc()->remote_description()->description()->contents();
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EXPECT_FALSE(parsed_contents.empty());
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for (const auto& content : parsed_contents) {
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EXPECT_TRUE(content.media_description()->rtcp_fb_ack_ccfb());
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}
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}
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TEST_F(PeerConnectionCongestionControlTest, CcfbGetsUsed) {
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test::ScopedFieldTrials trials(
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"WebRTC-RFC8888CongestionControlFeedback/Enabled/");
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ASSERT_TRUE(CreatePeerConnectionWrappers());
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ConnectFakeSignaling();
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caller()->AddAudioVideoTracks();
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caller()->CreateAndSetAndSignalOffer();
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ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
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MediaExpectations media_expectations;
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media_expectations.CalleeExpectsSomeAudio();
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media_expectations.CalleeExpectsSomeVideo();
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ASSERT_TRUE(ExpectNewFrames(media_expectations));
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auto pc_internal = caller()->pc_internal();
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EXPECT_TRUE_WAIT(pc_internal->FeedbackAccordingToRfc8888CountForTesting() > 0,
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kDefaultTimeout);
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}
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TEST_F(PeerConnectionCongestionControlTest, TransportCcGetsUsed) {
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test::ScopedFieldTrials trials(
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"WebRTC-RFC8888CongestionControlFeedback/Disabled/");
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ASSERT_TRUE(CreatePeerConnectionWrappers());
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ConnectFakeSignaling();
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caller()->AddAudioVideoTracks();
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caller()->CreateAndSetAndSignalOffer();
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ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
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MediaExpectations media_expectations;
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media_expectations.CalleeExpectsSomeAudio();
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media_expectations.CalleeExpectsSomeVideo();
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ASSERT_TRUE(ExpectNewFrames(media_expectations));
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auto pc_internal = caller()->pc_internal();
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EXPECT_TRUE_WAIT(
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pc_internal->FeedbackAccordingToTransportCcCountForTesting() > 0,
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kDefaultTimeout);
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// Test that RFC 8888 feedback is NOT generated when field trial disabled.
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EXPECT_THAT(pc_internal->FeedbackAccordingToRfc8888CountForTesting(), Eq(0));
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}
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} // namespace webrtc
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