Hi Tance,
Would you mind providing us with the IP that you resolve to when you connect to irc.twitch.tv?
Alternatively you can switch out (as others have mentioned) the hostname for the direct IP, which can help narrow down issues. If you cannot connect at all, it is possible your DNS resolver is returning stale data, which can be solved with "ipconfig /flushdns"
Websockets are a method of communication over a TCP connection, but you shouldn’t need them for your bot.