If tRPC is decoupled from Next.js, what is the best way to call it from RSC?

[trevorpfiz]

How would https://github.com/t3-oss/create-t3-turbo/blob/main/apps/nextjs/src/trpc/server.ts change if tRPC lived outside Next.js as a separate backend? Would we have to pass an Authorization header like the Expo app, or would we directly pass some of the user data through headers?

Thanks!