Send startup data from custom server to handler

[sujai1009]

Describe the problem

I want to connect to keyserver to fetch keys for the application. If not, then server should not start. Once success i need to save to session/state of svelte. So i tried using custom server node adapter to fetch the keys, now my problem is add it to request header in hooks.server.ts, which i cannot. So how to transmit data inbetween custom server(server.js) and sveltekit(with hooks or store)

Describe the proposed solution

Provide a method in "handler" for custom server and what data passed should be accessible in hooks/server.ts file as env variable.

Alternatives considered

No response

Importance

nice to have

Additional Information

No response

[eltigerchino]

closing as duplicate of #6183