TURN REST API

var moment = require('moment'),
    crypto = require('crypto');

function getICEServerJSON(username) {
  var ttl = 86400;
  var expiry = moment().add(ttl, 'seconds').unix();
  var usernameToken = expiry + ":" + username;
  var secret = "mysupersecret";
  var nonce = crypto.createHmac("sha1", secret).update(usernameToken).digest("base64");

  return {
      "username" : usernameToken,
      "password" : nonce,
      "ttl" : ttl,
      "uris" : [
        "stun:127.0.0.1",
        "turn:127.0.0.1"
      ]
    };
}