Unable to receive simulcast tracks

[sweetbasil-bill]

Your environment.

• Version: v3.1.43
• Browser:

What did you do?

• [Succeed]Deployed a pion SFU server (with webRTC v3.1.43)
• [Succeed]On Mac, create a peerConnection (using pion-go-sdk), join (use webRTC json protocol)
• Try to publish a track, with two simulcast tracks (the same streamID, trackID and different RID - h, q, f).
• See error Incoming unhandled RTP ssrc(XXXXXXX), OnTrack will not be fired. incoming SSRC failed Simulcast probing on SFU server (3 times, one for each track), and in a web viewer subscriber side can't see the tracks.
• If only publish one track, everything works fine.

Track type:
video track: h264/90000

What did you expect?

Simulcast tracks pass down to subscriber side and won't show the failure warning

What happened?

I tried with the latest version, but still see the error. Suspecting maybe race condition (but the failure is consistent) or not support simulcast features?

[sweetbasil-bill]

Seems I figured it out myself....I was using webrtc.NewTrackLocalStaticSample but seems I have to write my own localTrack and Packetizer to set proper RTP.HEADER.Extensions for using simulcast (RID)