How to use the pion ice-lite

[xianchuhan]

pion webrtcV2 server deploy on the public network cloud host,using an example:
settingEngine := webrtc.SettingEngine{}
settingEngine.SetLite(true)
settingEngine.SetInterfaceFilter(func(ifs string) bool {
if strings.Contains(ifs, "docker") {
return false
}
return true
})

settingEngine.SetNAT1To1IPs([]string{cf.publicIPs}, webrtc.ICECandidateTypeHost)
    config := webrtc.Configuration{
	        //ICEServers: iceServer[0:],
        }
peerConn, err := api.NewPeerConnection(config)

However, pion webrtc found no response from the server - side client stun binding request.

client:

server:

[Sean-Der]

Hi @xianchuhan

Sorry for the delay. If you don't enable ice-lite does Pion work?

[xianchuhan]

It doesn't matter. I have found the cause of the problem,because a previous colleague did not use ice-lite mode,pion ICE does not support relay connection first and srflx connection later,a browser role is ice-controlling, it can switch relay to srflx，but pion ice does not support switch，cause not charge each other on both sides of the flow,to resolve this problem,pion webrtc ice-role wrote die for controlling.
Now to ice-lite mode, pion webrtc ice-role not dead.

[Sean-Der]

If you want to change candidate pairs after connected you can do an ICE Restart. Does the controlling Agent automatically switch?

It sounds like you might be describing NICER ?

[xianchuhan]

Thanks for your answer. I thought the rfc document describes,ice-role is controlling can decide whether you can switch link.