Message 310988 - Python tracker

bpo-31399 has fixed hostname matching for IDNA 2003 compatible domain names. IDNA 2008 domain names with German ß are still broken, for example:

UnicodeError: ('IDNA does not round-trip', b'xn--knigsgchen-b4a3dun', b'xn--knigsgsschen-lcb0w')