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
33976	HTTP_HOST does not allow an ipv6 not enclosed in []	Eric Burghard	nobody	"Hi,

If I'm not mistaken, brackets are optional for an ipv6 address without port number. The problem is that it confuses django. In `asgi.py` we have

{{{
Invalid HTTP_HOST header: '2001:x:y:z:0:0:0:1'. The domain name provided is not valid according to RFC 1034/1035.
}}}

which can be fixed by changing `django.http.request.host_validation_re` to `_lazy_re_compile(r""[a-zA-z0-9.:]*"")`

but it also triggers an exception with `asgi.py`

{{{
2022/09/02 07:57:10 [alert] 422#422 [unit] Python failed to call 'loop.call_soon'
Traceback (most recent call last):
  File ""/usr/lib/python3.10/asyncio/base_events.py"", line 750, in call_soon
    self._check_closed()
ValueError: invalid literal for int() with base 10: 'x:y:z:0:0:0:1'
2022/09/02 07:57:25 [alert] 422#422 [unit] #23: Python failed to create 'client' pair
}}}"	Bug	new	Core (URLs)	3.2	Normal		ipv6		Unreviewed	0	0	0	0	0	0