func golang.org/x/net/http/httpguts.PunycodeHostPort
2 uses
golang.org/x/net/http/httpguts (current package)
httplex.go#L324: func PunycodeHostPort(v string) (string, error) {
golang.org/x/net/http2
transport.go#L1979: host, err := httpguts.PunycodeHostPort(host)
The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)