working on godot implementation for yggdrasil-go

[RevoluPowered]

I've been experimenting with yggdrasil with godot and love it. Looking for some feedback if you guys have time?

In short I basically implemented godot networking using yggdrasil, I added CGO support with unit tests, android/ios/mac/windows/linux support for this too, and also modified yggdrasil to support send unreliable via QUIC. (required for games)

The RFC implemented was this:

• https://datatracker.ietf.org/doc/html/rfc9221 (but with application layer fragmentation)

https://github.com/RevoluPowered/yggdrasil-multiplayer-peer-godot/tree/dev

The code quality is questionable but wondering what you all think? (any advice/feedback/suggestions?)

[majestrate]

neat idea.

[streamerthatareviral]

Hi,

I’m trying to install this project on Windows 11.

Steps I followed:

1. Cloned the repo
2. Ran npm install
3. Ran npm start

But I get this error:
Error: Cannot find module 'express'
Require stack:

/home/user/project/server.js
at Module._resolveFilename (node/modules/cjs/loader:933:15)
at Module._load (node/modules/cjs/loader:778:27)
at Module.require (node/modules/cjs/loader:1005:19)
at require (node/modules/cjs/helpers:102:18)
at Object. (/home/user/project/server.js:3:15)

Node.js v18.16.0
Can someone help me fix this?

[MohcineSafi]

Steps to reproduce:

Cloned the repository

Run npm install

Run npm start

[majestrate]

from what I can tell that project uses SConstruct, so you'll want to build with the scons command

[majestrate]

I was able to build the project just now by cloning the recursive repo and building it with scons

$ git clone --recurse-submodules https://github.com/RevoluPowered/yggdrasil-multiplayer-peer-godot
$ cd yggdrasil-multiplayer-peer-godot
$ scons

[RevoluPowered]

Thanks for answering, my github notifications are bad.

[RevoluPowered]

I have just updated the lib too with some improvements for the yggdrasil-go implementation of peering too.

I was benchmarking 64 hops and it was really slow, so have optimized the overhead/wait timer for ironwood and added some backoff logic to support large transfers too. On mac I have added sendmsg_x support too so that ios/mac can actually take advantage of hardware offload.

For my custom fork I've added a config option to use AES instead of the pre-existing encryption too for hardware acceleration, I was testing the overhead of the other algo and its really slow, but left the config in so you can swap back to default yggdrasil encryption.

Windows performance in general is not great but that's a windows socket issue, I did work on improving that to but will need to be done later.

The code quality is not guaranteed in any way shape or form.

Also in that repo I don't use a TUN interface at all. Its purely for software networking.
https://github.com/RevoluPowered/yggdrasil-go/tree/5bcfcd57678a67a86e91a4a249e9d53f612c9e0f

If you are bored, if my changes are useful take a look.
Mine are basically focused on performance / latency for something I'm working on.

I doubt its compatible with current public yggdrasil peers due to the changes to ironwood.

[majestrate]

one thing to keep in mind is that aesni is very side channel leaky compared to pure software schemes chacha20-poly1305 (which are usually implemented in constant time)

[RevoluPowered]

one thing to keep in mind is that aesni is very side channel leaky compared to pure software schemes chacha20-poly1305 (which are usually implemented in constant time)

Good point, is there some public server somewhere to chat about this stuff btw?

[majestrate]

i have an irc network in band: irc://[203:b00a:1684:860d:880f:ea9c:92dc:fabb]/general

it may be quiet but feel free to lurk as scrollback is enabled by default.