Figure out IPC connection

RangerMauve commented 3 months ago

We need to lay the foundation for doing rpc between the backend and the frontend. One approach would be to make use of unix domain sockets to register a listener on the backend and send requests to it on the frontend.

Phase 1: Rust unix domain registration

make a new rust project with two files, a listener and a sender
Use tokio's UnixStream library
Have the listener listen on connections in a unix domain socket path passed in from the cli args (maybe a file in the current directory?)
It should echo any data it gets on the connection back to the sender then close the connection
Have the sender take the same path as a cli arg and send "Hello World" down the socket, then print the output to stdout

Phase 2: Mobile connection

embed the rust server as an FFI library in a mobile app with a function to start/stop it and take an argument for the socket path
resolve some path for the socket in app-specific storage android io
Open the socket on the Kotlin/Swift (or whatever lang you prefer) and send "hello world" to the server
Log the response back

Phase 3: HTTP over unix domain socket

Use the code here to register an http server on the unix domain socket in the listener
Register a single request listener that just responds to GET requests with 200 and Hello World in the body
Update the rust sender to issue an http GET request to the domain socket use this code as a hint for how
Update the ios/android code to make http requests over the socket too