func resolveTCPAddrs(ctx context.Context, lg *zap.Logger, urls [][]url.URL) ([][]url.URL, error) {
	newurls := make([][]url.URL, 0)
	for _, us := range urls {
		nus := make([]url.URL, len(us))
		for i, u := range us {
			nu, err := url.Parse(u.String())
			if err != nil {
				return nil, fmt.Errorf("failed to parse %q (%v)", u.String(), err)
			}
			nus[i] = *nu
		}
		for i, u := range nus {
			h, err := resolveURL(ctx, lg, u)
			if err != nil {
				return nil, fmt.Errorf("failed to resolve %q (%v)", u.String(), err)
			}
			if h != "" {
				nus[i].Host = h
			}
		}
		newurls = append(newurls, nus)
	}
	return newurls, nil
}
func resolveTCPAddrs(ctx context.Context, lg *zap.Logger, urls [][]url.URL) ([][]url.URL, error) {
	newurls := make([][]url.URL, 0)
	for _, us := range urls {
		nus := make([]url.URL, len(us))
		for i, u := range us {
			nu, err := url.Parse(u.String())
			if err != nil {
				return nil, fmt.Errorf("failed to parse %q (%v)", u.String(), err)
			}
			nus[i] = *nu
		}
		for i, u := range nus {
			h, err := resolveURL(ctx, lg, u)
			if err != nil {
				return nil, fmt.Errorf("failed to resolve %q (%v)", u.String(), err)
			}
			if h != "" {
				nus[i].Host = h
			}
		}
		newurls = append(newurls, nus)
	}
	return newurls, nil
}
func resolveTCPAddrs ( ctx context . Context , lg * zap . Logger , urls [ ] [ ] url . URL ) ( [ ] [ ] url . URL , error ) { newurls := make ( [ ] [ ] url . URL , 0 ) for _ , us := range urls { nus := make ( [ ] url . URL , len ( us ) ) for i , u := range us { nu , err := url . Parse ( u . String ( ) ) if err != nil { return nil , fmt . Errorf ( " " , u . String ( ) , err ) } nus [ i ] = * nu } for i , u := range nus { h , err := resolveURL ( ctx , lg , u ) if err != nil { return nil , fmt . Errorf ( " " , u . String ( ) , err ) } if h != " " { nus [ i ] . Host = h } } newurls = append ( newurls , nus ) } return newurls , nil }
// resolveTCPAddrs is a convenience wrapper for net.ResolveTCPAddr.
// resolveTCPAddrs return a new set of url.URLs, in which all DNS hostnames
// are resolved.
resolveTCPAddrs is a convenience wrapper for net . ResolveTCPAddr . resolveTCPAddrs return a new set of url . URLs in which all DNS hostnames are resolved .