J.A.C.K. – A Tauri + Rust proxy orchestrator with amnesic memory design

Hey, r/rust

I wanted to share J.A.C.K., a multi engine proxy client built with Rust and Tauri.

I wanted to build a client that coordinates proxy cores (eg. sing-box, xray, mihomo) without leaving config logs or files behind.

# Technical Details

Process Stdin Piping: Instead of writing JSON configs to temp folders, we spawn the engine processes and feed configs directly to their stdin stream.

Win32 Integration: Uses wininet APIs directly to configure and refresh the system proxy and handles advfirewall outbound rules programmatically via netsh commands.

Handshake State Machine: Built a custom SOCKS5 egress state machine to handle connection state transitions and reconnect loops:

[*] --> Idle
Idle --> Launching : connect()
Launching --> Connecting : process_spawned
Connecting --> Connected : handshake_success
Connecting --> Failed : handshake_error
Connected --> Reconnecting : connection_dropped
Reconnecting --> Connected : reconnect_success
Reconnecting --> Failed : retry_limit_reached
Failed --> Idle : reset()

The repository is open source under the AGPL-3.0. Check it out at: https://github.com/terramrph/J.A.C.K