# fallback to wrong decoding
value, encoding = hdr, 'utf-8'
if encoding is None:
# fallback to wrong decoding
value, encoding = hdr, 'utf-8'
if encoding is None:
else:
value = value.decode(encoding, errors="replace")
unicode_headers[key] = value
else:
value = value.decode(encoding, errors="replace")
unicode_headers[key] = value