Reconnecting call with WebRtc after network offline Android

Question

I try to reconnect after network offline. I success to re connecting to call if the network fail in receiver side. But i don't success to do it if network fail in the caller side.

I try to re -init the web WebRTC client , it's don't work. Also try to create new offer , it's also don't work.

Do anyone know how to handle re connect in android with WebRTC?

if i am trying to reconnect by creating offer, its getting crashed.. can you please share the solution — Kumar Kalluri, Dec 12 '19 at 23:29
@KumarKalluri it's was some times ago.. what i remember is that you need to do all process from start.. create offer with same id and node dont work.. — blay, Jan 03 '21 at 08:20

score 0 · Answer 1 · answered Dec 30 '20 at 00:15

My case was slightly different since I ran into this issue while trying to implement WIFI > DATA network connection transition but I'm confident that this should work for you as well.

The solution for me was to recreate the offer and add a new constraint IceRestart in MediaConstraints and set it to true:

val mediaConstraint = MediaConstraints().apply {
    mandatory.add(MediaConstraints.KeyValuePair("IceRestart", "true"))
}

Then you just add the param in createOffer() (which you should probably have already) like so:

peerConnection.createOffer(object : SdpObserver() {
    override fun onCreateSuccess(p0: SessionDescription?) {
        // normal implementation
    }
},mediaConstraint)

Hope it helps :)

thanks for the answer. Just want to clarify, when you first establish the connection the Offer will not contain the above constraint? only upon experiencing disconnection while generating a new Offer? — Tomer Petel, May 17 '22 at 09:02

Reconnecting call with WebRtc after network offline Android

1 Answers1