rest port is bootstrapHttpDirectPort above… and if SSL is activated, you’ll need to also know bootstrapHttpSslPort…
these four ports should be known to you, generally speaking. From there, you can discover additional ports like the data port, query port, view port, etc…
what is your use case, exactly?
carrier bootstrap is something that was added back in Couchbase Server 3.0, and http bootstrap has always existed. note that if carrier is tried first and it automatically falls back to http, so you shouldn’t even have to disable it yourself.
Side note: if you still go this way, don’t forget to call shutdown().toBlocking().single() on the temp environment (or just shutdown() if you use a recent SDK).