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Update WebRTC passive producer handling

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This commit is contained in:
Alexey Khit
2023-03-11 20:52:56 +03:00
parent d6d21286c1
commit 13c426e2a9
4 changed files with 68 additions and 43 deletions
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25
pkg/webrtc/server.go
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@@ -33,6 +33,31 @@ func (c *Conn) SetOffer(offer string) (err error) {
}
func (c *Conn) GetAnswer() (answer string, err error) {
if c.Mode == streamer.ModePassiveProducer {
// init all Sender(s) for passive producer or they will be nil
// sender for passive producer is backchannel
sd := &sdp.SessionDescription{}
if err = sd.Unmarshal([]byte(c.offer)); err != nil {
return
}
for _, md := range sd.MediaDescriptions {
for _, attr := range md.Attributes {
switch attr.Key {
case "recvonly":
_, _ = c.pc.AddTransceiverFromKind(
webrtc.NewRTPCodecType(md.MediaName.Media),
webrtc.RTPTransceiverInit{Direction: webrtc.RTPTransceiverDirectionSendonly},
)
case "sendrecv":
_, _ = c.pc.AddTransceiverFromKind(
webrtc.NewRTPCodecType(md.MediaName.Media),
)
}
}
}
}
// we need to process remote offer after we create transeivers
desc := webrtc.SessionDescription{Type: webrtc.SDPTypeOffer, SDP: c.offer}
if err = c.pc.SetRemoteDescription(desc); err != nil {