Internationalized domain name, as specified by RFC3490 and RFC5891.
This type models internationalized hostnames. An IDN provides unicode labels, a unicode string form, and an ASCII hostname form.
A well formed IDN consists of one or more labels separated by dots. Each label may contain unicode characters as long as the converted ASCII form meets the requirements of RFC1123 (e.g., 63 or fewer characters and no leading or trailing dash). A dot is represented as an ASCII period or one of the unicode dots: full stop, ideographic full stop, fullwidth full stop, halfwidth ideographic full stop.
The toString method returns the IDN in the form in which it was constructed. Sometimes it is useful to normalize
the IDN -- converting all dots to an ASCII period and converting all labels to lowercase.
Note: equality and comparison of IDNs is case-sensitive. Consider comparing normalized toString values for a more lenient notion of equality.
- Companion:
- object