code: func NewURIFromHostPort(host string, port uint16) (*URI, error) {
  	uri := DefaultURI()
  	err := uri.SetHost(host)
  	if err != nil {
  		return nil, err
  	}
  	uri.SetPort(port)
  	return uri, nil
  }
docs: // NewURIFromHostPort returns a URI with specified host and port.