1.19.1 high-performance Minecraft server

Last update: Dec 31, 2022

Related tags

Games Graphite

Overview

Graphite

1.19.1 Minecraft Server

TODO

Subprojects

example_server: Example server using various Graphite components
server: The minecraft server. Entities, chunks, players, all that good stuff
concierge: Component that accepts new connections, handles status and login. Can be used to create proxies, servers, etc.
protocol: The minecraft protocol
net: Networking components and utilities
binary: Zero-copy serialization
command: Command dispatch and low-level creation
command_derive: Attribute macro to easily create commands
sticky: Collection(s) that guarantee the memory-location of its contents

Warning

Project is currently under heavy development, many things are completely non-functional

How to run the example server

!!! Currently Graphite only supports modern versions of Linux with io_uring !!!
(An alternative network backend will be available eventually, but is not a priority)

$ cargo run --bin example_server

Comments

no readme

a README.md is a great way to tell people what the heck your project is, how to help build it, and how to test what you’ve made. once you’re at the point where others can help, i’d highly recommend making one

opened by ryleu 3
Transmute between `Vec` types in graphite NBT
In crates/graphite_binary/src/nbt/decode.rs there is this

let vec: Vec<u8> = arr_bytes.into(); Ok(unsafe { std::mem::transmute(vec) })

Transmuting between Vec types is incorrect because #[repr(Rust)] types make no guarantee about their layout. The Rustonomicon has this to say:

So how do you know if the layouts are the same? For repr(C) types and repr(transparent) types, layout is precisely defined. But for your run-of-the-mill repr(Rust), it is not. Even different instances of the same generic type can have wildly different layout. Vec<i32> and Vec<u32> might have their fields in the same order, or they might not. The details of what exactly is and is not guaranteed for data layout are still being worked out over at the UCG WG.
opened by rj00a 1
Rewrite it in rust

Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.

Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.

Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more.

opened by SuperCuber 1

Replace `serde_nbt` with `valence_nbt` in the benchmarks

valence_nbt supersedes serde_nbt.

Results from my computer

graphite_parse_bigtest  time:   [1.6939 µs]
valence_parse_bigtest   time:   [2.7973 µs]
quartz_parse_bigtest    time:   [3.5792 µs]

graphite_write_bigtest  time:   [493.81 ns]
valence_write_bigtest   time:   [970.85 ns]
quartz_write_bigtest    time:   [929.17 ns]

graphite_find_bigtest   time:   [23.825 ns]
valence_find_bigtest    time:   [59.474 ns]
quartz_find_bigtest     time:   [50.074 ns]

opened by rj00a 0

Players still receive viewable packets from despawned entities

Entities which have been despawned due to player movement will still send packets to players (for 1 tick)

This can be fixed by only sending viewable packets if the chunk is within BOTH chunk_view_position and new_chunk_view_position

opened by Moulberry 3
Potential OOM bug/exploit in graphite NBT

In crates/graphite_binary/src/nbt/decode.rs the read_list function uses Vec::with_capacity(length as _). However, length has no upper bound. I believe malicious input could potentially allocate i32::MAX * sizeof(usize) bytes.

The other read functions are correctly bounded.

opened by rj00a 1

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