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Propagate CNAME.

This commit is contained in:
Juliusz Chroboczek 2020-09-03 15:29:18 +02:00
parent 5a91a7aae8
commit aa876bcd0d
3 changed files with 72 additions and 26 deletions

View file

@ -41,4 +41,5 @@ type downTrack interface {
WriteRTP(packat *rtp.Packet) error
Accumulate(bytes uint32)
setTimeOffset(ntp uint64, rtp uint32)
setCname(string)
}

View file

@ -216,6 +216,9 @@ func newDiskConn(directory, label string, up upConnection, remoteTracks []upTrac
func (t *diskTrack) setTimeOffset(ntp uint64, rtp uint32) {
}
func (t *diskTrack) setCname(string) {
}
func clonePacket(packet *rtp.Packet) *rtp.Packet {
buf, err := packet.Marshal()
if err != nil {

View file

@ -79,6 +79,7 @@ type rtpDownTrack struct {
srNTPTime uint64
remoteNTPTime uint64
remoteRTPTime uint32
cname atomic.Value
rtt uint64
}
@ -95,6 +96,10 @@ func (down *rtpDownTrack) setTimeOffset(ntp uint64, rtp uint32) {
atomic.StoreUint32(&down.remoteRTPTime, rtp)
}
func (down *rtpDownTrack) setCname(cname string) {
down.cname.Store(cname)
}
type rtpDownConnection struct {
id string
pc *webrtc.PeerConnection
@ -187,6 +192,7 @@ type rtpUpTrack struct {
writerDone chan struct{}
mu sync.Mutex
cname string
local []downTrack
srTime uint64
srNTPTime uint64
@ -362,7 +368,7 @@ func getTrackMid(pc *webrtc.PeerConnection, track *webrtc.Track) string {
// called locked
func (up *rtpUpConnection) complete() bool {
for mid, _ := range up.labels {
for mid := range up.labels {
found := false
for _, t := range up.tracks {
m := getTrackMid(up.pc, t.track)
@ -566,10 +572,14 @@ func writeLoop(conn *rtpUpConnection, track *rtpUpTrack, ch <-chan packetIndex)
track.mu.Lock()
ntp := track.srNTPTime
rtp := track.srRTPTime
cname := track.cname
track.mu.Unlock()
if ntp != 0 {
action.track.setTimeOffset(ntp, rtp)
}
if cname != "" {
action.track.setCname(cname)
}
} else {
found := false
for i, t := range local {
@ -691,7 +701,7 @@ func sendFIR(pc *webrtc.PeerConnection, ssrc uint32, seqno uint8) error {
return pc.WriteRTCP([]rtcp.Packet{
&rtcp.FullIntraRequest{
FIR: []rtcp.FIREntry{
rtcp.FIREntry{
{
SSRC: ssrc,
SequenceNumber: seqno,
},
@ -716,7 +726,7 @@ func sendNACK(pc *webrtc.PeerConnection, ssrc uint32, first uint16, bitmap uint1
&rtcp.TransportLayerNack{
MediaSSRC: ssrc,
Nacks: []rtcp.NackPair{
rtcp.NackPair{
{
first,
rtcp.PacketBitmap(bitmap),
},
@ -763,6 +773,7 @@ func rtcpUpListener(conn *rtpUpConnection, track *rtpUpTrack, r *webrtc.RTPRecei
now := rtptime.Jiffies()
for _, p := range ps {
local := track.getLocal()
switch p := p.(type) {
case *rtcp.SenderReport:
track.mu.Lock()
@ -773,11 +784,26 @@ func rtcpUpListener(conn *rtpUpConnection, track *rtpUpTrack, r *webrtc.RTPRecei
track.srNTPTime = p.NTPTime
track.srRTPTime = p.RTPTime
track.mu.Unlock()
local := track.getLocal()
for _, l := range local {
l.setTimeOffset(p.NTPTime, p.RTPTime)
}
case *rtcp.SourceDescription:
for _, c := range p.Chunks {
if c.Source != track.track.SSRC() {
continue
}
for _, i := range c.Items {
if i.Type != rtcp.SDESCNAME {
continue
}
track.mu.Lock()
track.cname = i.Text
track.mu.Unlock()
for _, l := range local {
l.setCname(i.Text)
}
}
}
}
}
@ -910,30 +936,46 @@ func sendSR(conn *rtpDownConnection) error {
remoteNTP := atomic.LoadUint64(&t.remoteNTPTime)
remoteRTP := atomic.LoadUint32(&t.remoteRTPTime)
if remoteNTP == 0 {
// we never got a remote SR for this track
continue
}
srTime := rtptime.NTPToTime(remoteNTP)
d := now.Sub(srTime)
if d > 0 && d < time.Hour {
delay := rtptime.FromDuration(
d, clockrate,
)
nowRTP = remoteRTP + uint32(delay)
if remoteNTP != 0 {
srTime := rtptime.NTPToTime(remoteNTP)
d := now.Sub(srTime)
if d > 0 && d < time.Hour {
delay := rtptime.FromDuration(
d, clockrate,
)
nowRTP = remoteRTP + uint32(delay)
}
p, b := t.rate.Totals()
packets = append(packets,
&rtcp.SenderReport{
SSRC: t.track.SSRC(),
NTPTime: nowNTP,
RTPTime: nowRTP,
PacketCount: p,
OctetCount: b,
})
atomic.StoreUint64(&t.srTime, jiffies)
atomic.StoreUint64(&t.srNTPTime, nowNTP)
}
p, b := t.rate.Totals()
packets = append(packets,
&rtcp.SenderReport{
SSRC: t.track.SSRC(),
NTPTime: nowNTP,
RTPTime: nowRTP,
PacketCount: p,
OctetCount: b,
})
atomic.StoreUint64(&t.srTime, jiffies)
atomic.StoreUint64(&t.srNTPTime, nowNTP)
cname, ok := t.cname.Load().(string)
if ok {
item := rtcp.SourceDescriptionItem{
Type: rtcp.SDESCNAME,
Text: cname,
}
packets = append(packets,
&rtcp.SourceDescription{
Chunks: []rtcp.SourceDescriptionChunk{
{
Source: t.track.SSRC(),
Items: []rtcp.SourceDescriptionItem{item},
},
},
},
)
}
}
if len(packets) == 0 {