Lotus API endpoint are by default expressed as multiaddresses (i.e. lotus auth
api-info) which end in /http, although they can be provided as standard URLs too.
There is an inconsistency here because despite the "http" part, Lotus will use "ws" protocol.
This lets lotus default to "ws" but honor whatever the user puts in the multiaddress (i.e.
/dns4/my.lotus.node/tcp/443/https) would work now using https, where before it uses "ws".
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