id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
18119	add DomainNameValidator to validate Internet Domain Names	michele	Nina Menezes	"Internet Domain Names are very present throughout, e.g. in URLs and e-mail addresses.

This patch adds django.core.validators.DomainNameValidator to check Internet Domain Names.

DomainNameValidator supports IDNA (utf) domain names, but it can reject them if optional accept_idna=False is passed to the constructor (defaults to accept).

DomainNameValidator is implemented as follows:
 * derives RegexValidator
 * uses the same RegEx of URLValidator (with the additional constrain to accept only 127 labels / 255 chars, as per RFC)
 * if plain validation fails, converts UTF -> ASCII with IDNA encoding and attempts to validate again (unless accept_idna=False)

Based on this Validator, I will submit separate patches to add DomainNameField support for models."	New feature	closed	Core (Other)	dev	Normal	fixed	validators		Ready for checkin	1	0	0	0	0	0