ASK: Request as string and writer

[rizaldirnm]

// Broadcast sends message to all alive users.
func (c *Chat) Broadcast(method string, params Object) error {
	var buf bytes.Buffer

	w := wsutil.NewWriter(&buf, ws.StateServerSide, ws.OpText)
	encoder := json.NewEncoder(w)

	r := Request{Method: method, Params: params}
	if err := encoder.Encode(r); err != nil {
		return err
	}
	if err := w.Flush(); err != nil {
		return err
	}

	c.out <- buf.Bytes()

	return nil
}

How I can achieve when Request is plain string so I dont need to JSON encoding. how can I write into buffer?

thank you in advance!