var pc_config = {"iceServers": [{"url": "stun:stun.l.google.com:19302"},
  {"url":"turn:my_username@<turn_server_ip_address>", "credential":"my_password"}]};

pc_new = new webkitRTCPeerConnection(pc_config);

var pc_config = {"iceServers": [{"url":"turn:my_username@<turn_server_ip_address>", "credential":"my_password"}]};

pc_new = new webkitRTCPeerConnection(pc_config);

sudo apt-get install coturn

sudo turnserver -a -o -v -n  --no-dtls --no-tls -u test:test -r "someRealm"

var peerConnectionConfig = {
  iceServers: [{
    urls: YOUR_IP:3478,
    username: 'test',
    password: 'test'
  }]
}