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peerconnection_media_test.go
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// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT
//go:build !js
// +build !js
package webrtc
import (
"bufio"
"bytes"
"context"
"errors"
"fmt"
"io"
"math/rand"
"regexp"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/pion/logging"
"github.com/pion/rtcp"
"github.com/pion/rtp"
"github.com/pion/sdp/v3"
"github.com/pion/transport/v3/test"
"github.com/pion/transport/v3/vnet"
"github.com/pion/webrtc/v4/internal/util"
"github.com/pion/webrtc/v4/pkg/media"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
errIncomingTrackIDInvalid = errors.New("incoming Track ID is invalid")
errIncomingTrackLabelInvalid = errors.New("incoming Track Label is invalid")
errNoTransceiverwithMid = errors.New("no transceiver with mid")
)
/*
Integration test for bi-directional peers
This asserts we can send RTP and RTCP both ways, and blocks until
each side gets something (and asserts payload contents)
*/
//nolint:gocyclo,cyclop
func TestPeerConnection_Media_Sample(t *testing.T) {
const (
expectedTrackID = "video"
expectedStreamID = "pion"
)
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pcOffer, pcAnswer, err := newPair()
assert.NoError(t, err)
awaitRTPRecv := make(chan bool)
awaitRTPRecvClosed := make(chan bool)
awaitRTPSend := make(chan bool)
awaitRTCPSenderRecv := make(chan bool)
awaitRTCPSenderSend := make(chan error)
awaitRTCPReceiverRecv := make(chan error)
awaitRTCPReceiverSend := make(chan error)
trackMetadataValid := make(chan error)
pcAnswer.OnTrack(func(track *TrackRemote, receiver *RTPReceiver) {
if track.ID() != expectedTrackID {
trackMetadataValid <- fmt.Errorf(
"%w: expected(%s) actual(%s)", errIncomingTrackIDInvalid, expectedTrackID, track.ID(),
)
return
}
if track.StreamID() != expectedStreamID {
trackMetadataValid <- fmt.Errorf(
"%w: expected(%s) actual(%s)", errIncomingTrackLabelInvalid, expectedStreamID, track.StreamID(),
)
return
}
close(trackMetadataValid)
go func() {
for {
time.Sleep(time.Millisecond * 100)
if routineErr := pcAnswer.WriteRTCP([]rtcp.Packet{&rtcp.RapidResynchronizationRequest{
SenderSSRC: uint32(track.SSRC()), MediaSSRC: uint32(track.SSRC()),
}}); routineErr != nil {
awaitRTCPReceiverSend <- routineErr
return
}
select {
case <-awaitRTCPSenderRecv:
close(awaitRTCPReceiverSend)
return
default:
}
}
}()
go func() {
_, _, routineErr := receiver.Read(make([]byte, 1400))
if routineErr != nil {
awaitRTCPReceiverRecv <- routineErr
} else {
close(awaitRTCPReceiverRecv)
}
}()
haveClosedAwaitRTPRecv := false
for {
p, _, routineErr := track.ReadRTP()
if routineErr != nil {
close(awaitRTPRecvClosed)
return
} else if bytes.Equal(p.Payload, []byte{0x10, 0x00}) && !haveClosedAwaitRTPRecv {
haveClosedAwaitRTPRecv = true
close(awaitRTPRecv)
}
}
})
vp8Track, err := NewTrackLocalStaticSample(
RTPCodecCapability{MimeType: MimeTypeVP8}, expectedTrackID, expectedStreamID,
)
assert.NoError(t, err)
sender, err := pcOffer.AddTrack(vp8Track)
assert.NoError(t, err)
go func() {
for {
time.Sleep(time.Millisecond * 100)
if pcOffer.ICEConnectionState() != ICEConnectionStateConnected {
continue
}
if routineErr := vp8Track.WriteSample(media.Sample{Data: []byte{0x00}, Duration: time.Second}); routineErr != nil {
//nolint:forbidigo // not a test failure
fmt.Println(routineErr)
}
select {
case <-awaitRTPRecv:
close(awaitRTPSend)
return
default:
}
}
}()
go func() {
parameters := sender.GetParameters()
for {
time.Sleep(time.Millisecond * 100)
if routineErr := pcOffer.WriteRTCP([]rtcp.Packet{
&rtcp.PictureLossIndication{
SenderSSRC: uint32(parameters.Encodings[0].SSRC), MediaSSRC: uint32(parameters.Encodings[0].SSRC),
},
}); routineErr != nil {
awaitRTCPSenderSend <- routineErr
}
select {
case <-awaitRTCPReceiverRecv:
close(awaitRTCPSenderSend)
return
default:
}
}
}()
go func() {
if _, _, routineErr := sender.Read(make([]byte, 1400)); routineErr == nil {
close(awaitRTCPSenderRecv)
}
}()
assert.NoError(t, signalPair(pcOffer, pcAnswer))
err, ok := <-trackMetadataValid
assert.NoError(t, err)
assert.False(t, ok)
<-awaitRTPRecv
<-awaitRTPSend
<-awaitRTCPSenderRecv
err, ok = <-awaitRTCPSenderSend
assert.NoError(t, err)
assert.False(t, ok)
<-awaitRTCPReceiverRecv
err, ok = <-awaitRTCPReceiverSend
assert.NoError(t, err)
assert.False(t, ok)
closePairNow(t, pcOffer, pcAnswer)
<-awaitRTPRecvClosed
}
// PeerConnection should be able to be torn down at anytime
// This test adds an input track and asserts
// OnTrack doesn't fire since no video packets will arrive
// No goroutine leaks
// No deadlocks on shutdown.
func TestPeerConnection_Media_Shutdown(t *testing.T) { //nolint:cyclop
iceCompleteAnswer := make(chan struct{})
iceCompleteOffer := make(chan struct{})
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pcOffer, pcAnswer, err := newPair()
assert.NoError(t, err)
_, err = pcOffer.AddTransceiverFromKind(
RTPCodecTypeVideo,
RTPTransceiverInit{Direction: RTPTransceiverDirectionRecvonly},
)
assert.NoError(t, err)
_, err = pcAnswer.AddTransceiverFromKind(
RTPCodecTypeAudio,
RTPTransceiverInit{Direction: RTPTransceiverDirectionRecvonly},
)
assert.NoError(t, err)
opusTrack, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeOpus}, "audio", "pion1")
assert.NoError(t, err)
vp8Track, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion2")
assert.NoError(t, err)
_, err = pcOffer.AddTrack(opusTrack)
assert.NoError(t, err)
_, err = pcAnswer.AddTrack(vp8Track)
assert.NoError(t, err)
var onTrackFiredLock sync.Mutex
onTrackFired := false
pcAnswer.OnTrack(func(*TrackRemote, *RTPReceiver) {
onTrackFiredLock.Lock()
defer onTrackFiredLock.Unlock()
onTrackFired = true
})
pcAnswer.OnICEConnectionStateChange(func(iceState ICEConnectionState) {
if iceState == ICEConnectionStateConnected {
close(iceCompleteAnswer)
}
})
pcOffer.OnICEConnectionStateChange(func(iceState ICEConnectionState) {
if iceState == ICEConnectionStateConnected {
close(iceCompleteOffer)
}
})
err = signalPair(pcOffer, pcAnswer)
assert.NoError(t, err)
<-iceCompleteAnswer
<-iceCompleteOffer
// Each PeerConnection should have one sender, one receiver and one transceiver
for _, pc := range []*PeerConnection{pcOffer, pcAnswer} {
senders := pc.GetSenders()
assert.Len(t, senders, 1, "Each PeerConnection should have one RTPSender")
receivers := pc.GetReceivers()
assert.Len(t, receivers, 2, "Each PeerConnection should have two RTPReceivers")
transceivers := pc.GetTransceivers()
assert.Len(t, transceivers, 2, "Each PeerConnection should have two RTPTransceivers")
}
closePairNow(t, pcOffer, pcAnswer)
onTrackFiredLock.Lock()
assert.False(t, onTrackFired, "PeerConnection OnTrack fired even though we got no packets")
onTrackFiredLock.Unlock()
}
// Integration test for behavior around media and disconnected peers
// Sending RTP and RTCP to a disconnected Peer shouldn't return an error.
func TestPeerConnection_Media_Disconnected(t *testing.T) { //nolint:cyclop
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
s := SettingEngine{}
s.SetICETimeouts(time.Second/2, time.Second/2, time.Second/8)
mediaEngine := &MediaEngine{}
assert.NoError(t, mediaEngine.RegisterDefaultCodecs())
pcOffer, pcAnswer, wan := createVNetPair(t, nil)
keepPackets := &atomicBool{}
keepPackets.set(true)
// Add a filter that monitors the traffic on the router
wan.AddChunkFilter(func(vnet.Chunk) bool {
return keepPackets.get()
})
vp8Track, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion2")
assert.NoError(t, err)
vp8Sender, err := pcOffer.AddTrack(vp8Track)
assert.NoError(t, err)
haveDisconnected := make(chan error)
pcOffer.OnICEConnectionStateChange(func(iceState ICEConnectionState) {
if iceState == ICEConnectionStateDisconnected {
close(haveDisconnected)
} else if iceState == ICEConnectionStateConnected {
// Assert that DTLS is done by pull remote certificate, don't tear down the PC early
for {
if len(vp8Sender.Transport().GetRemoteCertificate()) != 0 {
if pcAnswer.sctpTransport.association() != nil {
break
}
}
time.Sleep(time.Second)
}
keepPackets.set(false)
}
})
assert.NoError(t, signalPair(pcOffer, pcAnswer))
err, ok := <-haveDisconnected
assert.False(t, ok)
assert.NoError(t, err)
for i := 0; i <= 5; i++ {
err = vp8Track.WriteSample(media.Sample{Data: []byte{0x00}, Duration: time.Second})
assert.NoError(t, err)
err = pcOffer.WriteRTCP([]rtcp.Packet{&rtcp.PictureLossIndication{MediaSSRC: 0}})
assert.NoError(t, err)
}
assert.NoError(t, wan.Stop())
closePairNow(t, pcOffer, pcAnswer)
}
type undeclaredSsrcLogger struct{ unhandledSimulcastError chan struct{} }
func (u *undeclaredSsrcLogger) Trace(string) {}
func (u *undeclaredSsrcLogger) Tracef(string, ...interface{}) {}
func (u *undeclaredSsrcLogger) Debug(string) {}
func (u *undeclaredSsrcLogger) Debugf(string, ...interface{}) {}
func (u *undeclaredSsrcLogger) Info(string) {}
func (u *undeclaredSsrcLogger) Infof(string, ...interface{}) {}
func (u *undeclaredSsrcLogger) Warn(string) {}
func (u *undeclaredSsrcLogger) Warnf(string, ...interface{}) {}
func (u *undeclaredSsrcLogger) Error(string) {}
func (u *undeclaredSsrcLogger) Errorf(format string, _ ...interface{}) {
if format == incomingUnhandledRTPSsrc {
close(u.unhandledSimulcastError)
}
}
type undeclaredSsrcLoggerFactory struct{ unhandledSimulcastError chan struct{} }
func (u *undeclaredSsrcLoggerFactory) NewLogger(string) logging.LeveledLogger {
return &undeclaredSsrcLogger{u.unhandledSimulcastError}
}
// Filter SSRC lines.
func filterSsrc(offer string) (filteredSDP string) {
scanner := bufio.NewScanner(strings.NewReader(offer))
for scanner.Scan() {
l := scanner.Text()
if strings.HasPrefix(l, "a=ssrc") {
continue
}
filteredSDP += l + "\n"
}
return
}
func filterSDPExtensions(offer string) (filteredSDP string) {
scanner := bufio.NewScanner(strings.NewReader(offer))
for scanner.Scan() {
l := scanner.Text()
if strings.HasPrefix(l, "a=extmap") {
continue
}
filteredSDP += l + "\n"
}
return
}
// If a SessionDescription has a single media section and no SSRC
// assume that it is meant to handle all RTP packets.
func TestUndeclaredSSRC(t *testing.T) {
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
t.Run("No SSRC", func(t *testing.T) {
pcOffer, pcAnswer, err := newPair()
assert.NoError(t, err)
vp8Writer, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion2")
assert.NoError(t, err)
_, err = pcOffer.AddTrack(vp8Writer)
assert.NoError(t, err)
onTrackFired := make(chan struct{})
pcAnswer.OnTrack(func(trackRemote *TrackRemote, _ *RTPReceiver) {
assert.Equal(t, trackRemote.StreamID(), vp8Writer.StreamID())
assert.Equal(t, trackRemote.ID(), vp8Writer.ID())
close(onTrackFired)
})
offer, err := pcOffer.CreateOffer(nil)
assert.NoError(t, err)
offerGatheringComplete := GatheringCompletePromise(pcOffer)
assert.NoError(t, pcOffer.SetLocalDescription(offer))
<-offerGatheringComplete
offer.SDP = filterSsrc(pcOffer.LocalDescription().SDP)
assert.NoError(t, pcAnswer.SetRemoteDescription(offer))
answer, err := pcAnswer.CreateAnswer(nil)
assert.NoError(t, err)
answerGatheringComplete := GatheringCompletePromise(pcAnswer)
assert.NoError(t, pcAnswer.SetLocalDescription(answer))
<-answerGatheringComplete
assert.NoError(t, pcOffer.SetRemoteDescription(*pcAnswer.LocalDescription()))
sendVideoUntilDone(t, onTrackFired, []*TrackLocalStaticSample{vp8Writer})
closePairNow(t, pcOffer, pcAnswer)
})
t.Run("Has RID", func(t *testing.T) {
unhandledSimulcastError := make(chan struct{})
mediaEngine := &MediaEngine{}
assert.NoError(t, mediaEngine.RegisterDefaultCodecs())
pcOffer, pcAnswer, err := NewAPI(WithSettingEngine(SettingEngine{
LoggerFactory: &undeclaredSsrcLoggerFactory{unhandledSimulcastError},
}), WithMediaEngine(mediaEngine)).newPair(Configuration{})
assert.NoError(t, err)
vp8Writer, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion2")
assert.NoError(t, err)
_, err = pcOffer.AddTrack(vp8Writer)
assert.NoError(t, err)
offer, err := pcOffer.CreateOffer(nil)
assert.NoError(t, err)
offerGatheringComplete := GatheringCompletePromise(pcOffer)
assert.NoError(t, pcOffer.SetLocalDescription(offer))
<-offerGatheringComplete
// Append RID to end of SessionDescription. Will not be considered unhandled anymore
offer.SDP = filterSsrc(pcOffer.LocalDescription().SDP) + "a=" + sdpAttributeRid + "\r\n"
assert.NoError(t, pcAnswer.SetRemoteDescription(offer))
answer, err := pcAnswer.CreateAnswer(nil)
assert.NoError(t, err)
answerGatheringComplete := GatheringCompletePromise(pcAnswer)
assert.NoError(t, pcAnswer.SetLocalDescription(answer))
<-answerGatheringComplete
assert.NoError(t, pcOffer.SetRemoteDescription(*pcAnswer.LocalDescription()))
sendVideoUntilDone(t, unhandledSimulcastError, []*TrackLocalStaticSample{vp8Writer})
closePairNow(t, pcOffer, pcAnswer)
})
t.Run("multiple media sections, no sdp extensions", func(t *testing.T) {
pcOffer, pcAnswer, err := newPair()
assert.NoError(t, err)
vp8Writer, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion")
assert.NoError(t, err)
_, err = pcOffer.CreateDataChannel("data", nil)
assert.NoError(t, err)
_, err = pcOffer.AddTrack(vp8Writer)
assert.NoError(t, err)
opusWriter, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeOpus}, "audio", "pion")
assert.NoError(t, err)
_, err = pcOffer.AddTrack(opusWriter)
assert.NoError(t, err)
onVideoTrackFired := make(chan struct{})
onAudioTrackFired := make(chan struct{})
gotVideo, gotAudio := false, false
pcAnswer.OnTrack(func(trackRemote *TrackRemote, _ *RTPReceiver) {
switch trackRemote.Kind() {
case RTPCodecTypeVideo:
assert.False(t, gotVideo, "already got video track")
assert.Equal(t, trackRemote.StreamID(), vp8Writer.StreamID())
assert.Equal(t, trackRemote.ID(), vp8Writer.ID())
gotVideo = true
onVideoTrackFired <- struct{}{}
case RTPCodecTypeAudio:
assert.False(t, gotAudio, "already got audio track")
assert.Equal(t, trackRemote.StreamID(), opusWriter.StreamID())
assert.Equal(t, trackRemote.ID(), opusWriter.ID())
gotAudio = true
onAudioTrackFired <- struct{}{}
default:
assert.Fail(t, "unexpected track kind", trackRemote.Kind())
}
})
offer, err := pcOffer.CreateOffer(nil)
assert.NoError(t, err)
offerGatheringComplete := GatheringCompletePromise(pcOffer)
assert.NoError(t, pcOffer.SetLocalDescription(offer))
<-offerGatheringComplete
offer.SDP = filterSDPExtensions(filterSsrc(pcOffer.LocalDescription().SDP))
assert.NoError(t, pcAnswer.SetRemoteDescription(offer))
answer, err := pcAnswer.CreateAnswer(nil)
assert.NoError(t, err)
answerGatheringComplete := GatheringCompletePromise(pcAnswer)
assert.NoError(t, pcAnswer.SetLocalDescription(answer))
<-answerGatheringComplete
assert.NoError(t, pcOffer.SetRemoteDescription(*pcAnswer.LocalDescription()))
wait := sync.WaitGroup{}
wait.Add(2)
go func() {
sendVideoUntilDone(t, onVideoTrackFired, []*TrackLocalStaticSample{vp8Writer})
wait.Done()
}()
go func() {
sendVideoUntilDone(t, onAudioTrackFired, []*TrackLocalStaticSample{opusWriter})
wait.Done()
}()
wait.Wait()
closePairNow(t, pcOffer, pcAnswer)
})
t.Run("findMediaSectionByPayloadType test", func(t *testing.T) {
parsed := &SessionDescription{
parsed: &sdp.SessionDescription{
MediaDescriptions: []*sdp.MediaDescription{
{
MediaName: sdp.MediaName{
Media: "video",
Protos: []string{"UDP", "TLS", "RTP", "SAVPF"},
Formats: []string{"96", "97", "98", "99", "BAD", "100", "101", "102"},
},
},
{
MediaName: sdp.MediaName{
Media: "audio",
Protos: []string{"UDP", "TLS", "RTP", "SAVPF"},
Formats: []string{"8", "9", "101"},
},
},
{
MediaName: sdp.MediaName{
Media: "application",
Protos: []string{"UDP", "DTLS", "SCTP"},
Formats: []string{"webrtc-datachannel"},
},
},
},
},
}
peer := &PeerConnection{}
video, ok := peer.findMediaSectionByPayloadType(96, parsed)
assert.True(t, ok)
assert.NotNil(t, video)
assert.Equal(t, "video", video.MediaName.Media)
audio, ok := peer.findMediaSectionByPayloadType(8, parsed)
assert.True(t, ok)
assert.NotNil(t, audio)
assert.Equal(t, "audio", audio.MediaName.Media)
missing, ok := peer.findMediaSectionByPayloadType(42, parsed)
assert.False(t, ok)
assert.Nil(t, missing)
})
}
func TestAddTransceiverFromTrackSendOnly(t *testing.T) {
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
track, err := NewTrackLocalStaticSample(
RTPCodecCapability{MimeType: "audio/Opus"},
"track-id",
"stream-id",
)
assert.NoError(t, err)
transceiver, err := pc.AddTransceiverFromTrack(track, RTPTransceiverInit{
Direction: RTPTransceiverDirectionSendonly,
})
assert.NoError(t, err)
assert.Nil(t, transceiver.Receiver(), "Transceiver shouldn't have a receiver")
assert.NotNil(t, transceiver.Sender(), "Transceiver should have a sender")
assert.Len(t, pc.GetTransceivers(), 1, "PeerConnection should have one transceiver")
assert.Len(t, pc.GetSenders(), 1, "PeerConnection should have one sender")
offer, err := pc.CreateOffer(nil)
assert.NoError(t, err)
assert.Truef(
t, offerMediaHasDirection(offer, RTPCodecTypeAudio, RTPTransceiverDirectionSendonly),
"Direction on SDP is not %s", RTPTransceiverDirectionSendonly,
)
assert.NoError(t, pc.Close())
}
func TestAddTransceiverFromTrackSendRecv(t *testing.T) {
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
track, err := NewTrackLocalStaticSample(
RTPCodecCapability{MimeType: "audio/Opus"},
"track-id",
"stream-id",
)
assert.NoError(t, err)
transceiver, err := pc.AddTransceiverFromTrack(track, RTPTransceiverInit{
Direction: RTPTransceiverDirectionSendrecv,
})
assert.NoError(t, err)
assert.NotNil(t, transceiver.Receiver(), "Transceiver should have a receiver")
assert.NotNil(t, transceiver.Sender(), "Transceiver should have a sender")
assert.Len(t, pc.GetTransceivers(), 1, "PeerConnection should have one transceiver")
offer, err := pc.CreateOffer(nil)
assert.NoError(t, err)
assert.Truef(
t, offerMediaHasDirection(offer, RTPCodecTypeAudio, RTPTransceiverDirectionSendrecv),
"Direction on SDP is not %s", RTPTransceiverDirectionSendrecv,
)
assert.NoError(t, pc.Close())
}
func TestAddTransceiverAddTrack_Reuse(t *testing.T) {
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
tr, err := pc.AddTransceiverFromKind(
RTPCodecTypeVideo,
RTPTransceiverInit{Direction: RTPTransceiverDirectionRecvonly},
)
assert.NoError(t, err)
assert.Equal(t, []*RTPTransceiver{tr}, pc.GetTransceivers())
addTrack := func() (TrackLocal, *RTPSender) {
track, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "foo", "bar")
assert.NoError(t, err)
sender, err := pc.AddTrack(track)
assert.NoError(t, err)
return track, sender
}
track1, sender1 := addTrack()
assert.Equal(t, 1, len(pc.GetTransceivers()))
assert.Equal(t, sender1, tr.Sender())
assert.Equal(t, track1, tr.Sender().Track())
require.NoError(t, pc.RemoveTrack(sender1))
track2, _ := addTrack()
assert.Equal(t, 1, len(pc.GetTransceivers()))
assert.Equal(t, track2, tr.Sender().Track())
addTrack()
assert.Equal(t, 2, len(pc.GetTransceivers()))
assert.NoError(t, pc.Close())
}
func TestAddTransceiverAddTrack_NewRTPSender_Error(t *testing.T) {
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
_, err = pc.AddTransceiverFromKind(
RTPCodecTypeVideo,
RTPTransceiverInit{Direction: RTPTransceiverDirectionRecvonly},
)
assert.NoError(t, err)
dtlsTransport := pc.dtlsTransport
pc.dtlsTransport = nil
track, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "foo", "bar")
assert.NoError(t, err)
_, err = pc.AddTrack(track)
assert.Error(t, err, "DTLSTransport must not be nil")
assert.Equal(t, 1, len(pc.GetTransceivers()))
pc.dtlsTransport = dtlsTransport
assert.NoError(t, pc.Close())
}
func TestRtpSenderReceiver_ReadClose_Error(t *testing.T) {
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
tr, err := pc.AddTransceiverFromKind(
RTPCodecTypeVideo,
RTPTransceiverInit{Direction: RTPTransceiverDirectionSendrecv},
)
assert.NoError(t, err)
sender, receiver := tr.Sender(), tr.Receiver()
assert.NoError(t, sender.Stop())
_, _, err = sender.Read(make([]byte, 0, 1400))
assert.ErrorIs(t, err, io.ErrClosedPipe)
assert.NoError(t, receiver.Stop())
_, _, err = receiver.Read(make([]byte, 0, 1400))
assert.ErrorIs(t, err, io.ErrClosedPipe)
assert.NoError(t, pc.Close())
}
// nolint: dupl
func TestAddTransceiverFromKind(t *testing.T) {
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
transceiver, err := pc.AddTransceiverFromKind(RTPCodecTypeVideo, RTPTransceiverInit{
Direction: RTPTransceiverDirectionRecvonly,
})
assert.NoError(t, err)
assert.NotNil(t, transceiver.Receiver(), "Transceiver should have a receiver")
assert.Nil(t, transceiver.Sender(), "Transceiver shouldn't have a sender")
offer, err := pc.CreateOffer(nil)
assert.NoError(t, err)
assert.Truef(
t, offerMediaHasDirection(offer, RTPCodecTypeVideo, RTPTransceiverDirectionRecvonly),
"Direction on SDP is not %s", RTPTransceiverDirectionRecvonly,
)
assert.NoError(t, pc.Close())
}
func TestAddTransceiverFromTrackFailsRecvOnly(t *testing.T) {
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pc, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
track, err := NewTrackLocalStaticSample(
RTPCodecCapability{
MimeType: MimeTypeH264,
SDPFmtpLine: "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f",
},
"track-id",
"track-label",
)
assert.NoError(t, err)
transceiver, err := pc.AddTransceiverFromTrack(track, RTPTransceiverInit{
Direction: RTPTransceiverDirectionRecvonly,
})
assert.Nil(
t, transceiver,
"AddTransceiverFromTrack shouldn't succeed with Direction RTPTransceiverDirectionRecvonly",
)
assert.NotNil(t, err)
assert.NoError(t, pc.Close())
}
func TestPlanBMediaExchange(t *testing.T) {
runTest := func(t *testing.T, trackCount int) {
t.Helper()
addSingleTrack := func(p *PeerConnection) *TrackLocalStaticSample {
track, err := NewTrackLocalStaticSample(
RTPCodecCapability{MimeType: MimeTypeVP8},
fmt.Sprintf("video-%d", util.RandUint32()),
fmt.Sprintf("video-%d", util.RandUint32()),
)
assert.NoError(t, err)
_, err = p.AddTrack(track)
assert.NoError(t, err)
return track
}
pcOffer, err := NewPeerConnection(Configuration{SDPSemantics: SDPSemanticsPlanB})
assert.NoError(t, err)
pcAnswer, err := NewPeerConnection(Configuration{SDPSemantics: SDPSemanticsPlanB})
assert.NoError(t, err)
var onTrackWaitGroup sync.WaitGroup
onTrackWaitGroup.Add(trackCount)
pcAnswer.OnTrack(func(*TrackRemote, *RTPReceiver) {
onTrackWaitGroup.Done()
})
done := make(chan struct{})
go func() {
onTrackWaitGroup.Wait()
close(done)
}()
_, err = pcAnswer.AddTransceiverFromKind(RTPCodecTypeVideo)
assert.NoError(t, err)
outboundTracks := []*TrackLocalStaticSample{}
for i := 0; i < trackCount; i++ {
outboundTracks = append(outboundTracks, addSingleTrack(pcOffer))
}
assert.NoError(t, signalPair(pcOffer, pcAnswer))
func() {
for {
select {
case <-time.After(20 * time.Millisecond):
for _, track := range outboundTracks {
assert.NoError(t, track.WriteSample(media.Sample{Data: []byte{0x00}, Duration: time.Second}))
}
case <-done:
return
}
}
}()
closePairNow(t, pcOffer, pcAnswer)
}
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
t.Run("Single Track", func(t *testing.T) {
runTest(t, 1)
})
t.Run("Multi Track", func(t *testing.T) {
runTest(t, 2)
})
}
// TestPeerConnection_Start_Only_Negotiated_Senders tests that only
// the current negotiated transceivers senders provided in an
// offer/answer are started.
func TestPeerConnection_Start_Only_Negotiated_Senders(t *testing.T) {
lim := test.TimeOut(time.Second * 30)
defer lim.Stop()
report := test.CheckRoutines(t)
defer report()
pcOffer, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
defer func() { assert.NoError(t, pcOffer.Close()) }()
pcAnswer, err := NewPeerConnection(Configuration{})
assert.NoError(t, err)
defer func() { assert.NoError(t, pcAnswer.Close()) }()
track1, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion1")
require.NoError(t, err)
sender1, err := pcOffer.AddTrack(track1)
require.NoError(t, err)
offer, err := pcOffer.CreateOffer(nil)
assert.NoError(t, err)
offerGatheringComplete := GatheringCompletePromise(pcOffer)
assert.NoError(t, pcOffer.SetLocalDescription(offer))
<-offerGatheringComplete
assert.NoError(t, pcAnswer.SetRemoteDescription(*pcOffer.LocalDescription()))
answer, err := pcAnswer.CreateAnswer(nil)
assert.NoError(t, err)
answerGatheringComplete := GatheringCompletePromise(pcAnswer)
assert.NoError(t, pcAnswer.SetLocalDescription(answer))
<-answerGatheringComplete
// Add a new track between providing the offer and applying the answer
track2, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeVP8}, "video", "pion2")
require.NoError(t, err)
sender2, err := pcOffer.AddTrack(track2)
require.NoError(t, err)
// apply answer so we'll test generateMatchedSDP
assert.NoError(t, pcOffer.SetRemoteDescription(*pcAnswer.LocalDescription()))
// Wait for senders to be started by startTransports spawned goroutine
pcOffer.ops.Done()
// sender1 should be started but sender2 should not be started
assert.True(t, sender1.hasSent(), "sender1 is not started but should be started")
assert.False(t, sender2.hasSent(), "sender2 is started but should not be started")
}
// TestPeerConnection_Start_Right_Receiver tests that the right
// receiver (the receiver which transceiver has the same media section as the track)
// is started for the specified track.
func TestPeerConnection_Start_Right_Receiver(t *testing.T) {
isTransceiverReceiverStarted := func(pc *PeerConnection, mid string) (bool, error) {
for _, transceiver := range pc.GetTransceivers() {
if transceiver.Mid() != mid {
continue
}
return transceiver.Receiver() != nil && transceiver.Receiver().haveReceived(), nil
}
return false, fmt.Errorf("%w: %q", errNoTransceiverwithMid, mid)