sfu-ws: Error when SetLocalDescription

[David Grinberg]

Hi, i'm running sfu-ws example and have this error when second user is connecting:

InvalidModificationError: invalid proposed signaling state transition: have-local-offer->SetLocal(offer)->have-local-offer

It happens here:

example-webrtc-applications/sfu-ws/main.go

Line 162 in 811ebe7

 if err = peerConnections[i].peerConnection.SetLocalDescription(offer); err != nil { 

[David Grinberg]

Found my answer in #pion slack channel. So the error means that I haven’t finished last round of negotiation - this makes sense because calls to setLocal and setRemote are concurrent