Certain names don't work on discovery mode

[WhyNotHugo]

It looks like certain names don't work on discover mode. All my initial testing was using "librespot@$HOSTNAME" (eg: librespot@athena.barrera.io".

I debugged fiddled around for quite a while thinking discovery was broken, and it's not -- unless you use . in the name (The @ looks okay though)t. This is probably not the only invalid character (maybe it needs escaping?).

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Actually the problem is probably some form of escaping, since the official spotify client does work with . in the device name.