code: func (h *RequestHeader) SetRequestURIBytes(requestURI []byte) {
  	h.requestURI = append(h.requestURI[:0], requestURI...)
  }
docs: // SetRequestURIBytes sets RequestURI for the first HTTP request line.
  // RequestURI must be properly encoded.
  // Use URI.RequestURI for constructing proper RequestURI if unsure.