code: function createSocket(socket, options = {}) {
    if (!isSocket(socket)) {
      options = socket; // eslint-disable-line no-param-reassign
  
      if (isSocket(options.socket)) {
        // eslint-disable-next-line no-param-reassign, prefer-destructuring
        socket = options.socket;
      } else {
        socket = dgram.createSocket(options); // eslint-disable-line no-param-reassign
        socket.bind(options.port || 0, options.address || '0.0.0.0');
      }
    }
  
    return new Socket(Object.assign({}, options, { socket }));
  }
docs: Create a new UDP unicast socket.
  
  @param {dgram.Socket|string|object} socket
  @param {object} [options]
  @return {Socket}