{
  "sdpSemantics": "unified-plan",
  "iceServers": [
    {
      "urls": "stun:stun.l.google.com:19302"
    },
    {
      "urls": "stun:openrelay.metered.ca:80"
    },
    {
      "urls": "turn:openrelay.metered.ca:443",
      "username": "openrelayproject",
      "credential": "openrelayproject"
    }
  ]
}