Deepslate

A high-performance Minecraft server proxy written in Rust.

Deepslate sits between your players and your backend servers, handling authentication, packet forwarding, and server switching. It's built for server networks that need a proxy they can trust at scale. Plugins are compiled into the binary rather than loaded at runtime, giving you full type safety with zero dispatch overhead.

Features

Supports Minecraft Java Edition 1.21.x
Online mode with Mojang authentication
Compatible with Velocity's modern forwarding
gRPC control plane for managing backend servers at runtime
Compile-time plugin system with an events API
Environment variable and code-driven configuration

Quick Start

Add deepslate to your Cargo.toml:

[dependencies]
deepslate = "0.3"
tokio = { version = "1", features = ["rt-multi-thread", "macros"] }

Build your own proxy binary with a plugin:

use deepslate::{Proxy, ServerId};
use deepslate::event::*;
use deepslate::event::events::*;

const LOBBY: ServerId = ServerId::new("lobby", "127.0.0.1:25566");

struct MyPlugin;

impl Plugin for MyPlugin {
    fn register(&self, events: &mut EventManager) {
        events.subscribe::<LoginEvent>(PostOrder::NORMAL, |event| {
            println!("{} logged in", event.player.profile.name);
        });
    }
}

#[tokio::main]
async fn main() {
    let proxy = Proxy::builder()
        .forwarding_secret("your-secret")
        .server(&LOBBY)
        .try_servers([&LOBBY])
        .plugin(MyPlugin)
        .build()
        .expect("failed to build proxy");

    proxy.run().await.expect("proxy error");
}

Documentation

For configuration, the plugin API, events, and more, see the wiki.

License

Deepslate is licensed under either of

Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Contribution