Incorrect URL parsing with ipv6 addresses

[Zac-HD]

from urllib.parse import urlparse
import httpx

url = "http://::1/page"  # non-existent localhost page
print(urlparse(url))     # _definitely_ has a http:// scheme
try:
    httpx.get(url)
except httpx.UnsupportedProtocol as err:
    print(err)  # Request URL is missing an 'http://' or 'https://' protocol.

I don't know where between httpx and httpcore this goes wrong, so I thought it best to report at the top level and let the experts decide what to do about this.