Call doesn't work when web client create the room

[digaa]

Hi I tried to use your code before three, four months. At first all worked well, but I had problem with TURN server. When I fixed problem with TURN I find out that call only work when android user first go into the room. At first I think that I maybe create some mistake and bug, so that I downloaded your code and tried again without any changes. Result is same, connection between two clients is established only when web client go as a second user. I am 100% sure that this call works fine no matter who enters first. Do anyone know what is going on and why it doesn't work now?

[djsamseng]

Yeah I found that in order to allow the Android app to join second (browser first, then android app joins) I had to make these changes to start streaming the video once both clients were connected to the WebRTC server but before the android app answered the browser's offer. The key change here was that "got user media" was being sent only on doCall. This meant that "got user media" was only sent from the android app to the browser when the android app was the initiator. Thus the android app had to be the initiator (joined first). Always sending "got user media" when the android app wakes up allows for the android app to join second

djsamseng@476e336#diff-d5e563a4c154e88804b40a6bff3b9e0e482d67c2a961229f7d805ff105107b32L123-L305

[cartantino]

Hi @digaa,
what was your problem with TURN server? And how did you fixed it?
Thanks in advance,
Costantino.

[digaa]

@cartantino I work on windows server OS so I wasn't able to run Coturn server properly. I lost two weeks finding best replacement for Coturn and trying to run Goturn or some other turn server. Finally I manage to run Coturn using cygwin and after that as I describe in previous comment this app stop works in some situation.

[digaa]

@djsamseng I'm not on that project anymore but when I get back I'll try it. Thanks

[cartantino]

@digaa Thanks for your quick response!
If I don't bother you, I'd like to know where in the code you have made the reference for your personal TURN server.
Thanks in advance.

[digaa]

@cartantino you need to add url and credentials in android and web app. In android you have createPeerConnection method and there you have iceServers array. There you need to add your turn and stun server.

private PeerConnection createPeerConnection(PeerConnectionFactory factory) {
       ArrayList<PeerConnection.IceServer> iceServers = new ArrayList<>();
       iceServers.add(new PeerConnection.IceServer("stun:${ipadress}:${port}"));
       iceServers.add(new PeerConnection.IceServer("turn:${ipadress}:${port}?transport=udp",username,password));
       iceServers.add(new PeerConnection.IceServer("stun:stun.l.google.com:19302"));
     

in web there is similar list that you need to fill with your server data

iceServers: [{
        urls: 'stun:${ipadress}:${port}'
      },{
        urls:'turn:${ipadress}:${port}?transport=udp',
        username: username,
        credential: password
      },{
        urls: 'stun:stun.l.google.com:19302'
      }]
    }

[cartantino]

Thank you so much!! Did you use coturn to build your own TURN server?

@cartantino you need to add url and credentials in android and web app. In android you have createPeerConnection method and there you have iceServers array. There you need to add your turn and stun server.

private PeerConnection createPeerConnection(PeerConnectionFactory factory) {
       ArrayList<PeerConnection.IceServer> iceServers = new ArrayList<>();
       iceServers.add(new PeerConnection.IceServer("stun:${ipadress}:${port}"));
       iceServers.add(new PeerConnection.IceServer("turn:${ipadress}:${port}?transport=udp",username,password));
       iceServers.add(new PeerConnection.IceServer("stun:stun.l.google.com:19302"));
     

in web there is similar list that you need to fill with your server data

iceServers: [{
        urls: 'stun:${ipadress}:${port}'
      },{
        urls:'turn:${ipadress}:${port}?transport=udp',
        username: username,
        credential: password
      },{
        urls: 'stun:stun.l.google.com:19302'
      }]
    }

Thank you so much!! Did you use coturn to build your own TURN server?