http.client aborts header parsing upon encountering non-ASCII header names

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-05-29.23:32:09.269>
labels = ['3.7', '3.8', 'type-bug', 'library', '3.9']
title = 'http.client aborts header parsing upon encountering non-ASCII header names'
updated_at = <Date 2022-01-22.03:59:08.693>
user = 'https://github.com/tipabu'

bugs.python.org fields:

activity = <Date 2022-01-22.03:59:08.693>
actor = 'corona10'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-05-29.23:32:09.269>
creator = 'tburke'
dependencies = []
files = []
hgrepos = []
issue_num = 37093
keywords = ['patch']
message_count = 2.0
messages = ['343942', '358833']
nosy_count = 5.0
nosy_names = ['barry', 'r.david.murray', 'maxking', 'corona10', 'tburke']
pr_nums = ['13788']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue37093'
versions = ['Python 3.7', 'Python 3.8', 'Python 3.9']