src/definitions/ICEServer.js
/**
* TURN/STUN server configuration
* @typedef {Object} ICEServer
* @property {string|string[]} urls - The server url. (*stun:<ip|hostname>:<port>*
* or *turn:<ip|hostname>:<port?>*)
* @property {string} [username] - The user name for this server
* @property {string} [credential] - The password for this server
*/