blender man (Jul 28 2025 at 21:42): blender man (Jul 28 2025 at 21:42):Is there any webrtc library that supports compiling to wasi? Webrtc rust is not compiling because of socket2 and tokio. I need to impleament realtime audio communication.
Jeff Parsons (Jul 29 2025 at 01:58):I don't think so. (Don't take that as definitive.) For now at least I would suggest managing the WebRTC connection in JavaScript and ferry bytes across the JS/Wasm boundary.
Victor Adossi (Jul 29 2025 at 09:51):Note that there are some examples of tokio that do work with wasi:sockets:
https://github.com/tokio-rs/tokio/pull/6893
There are other prototypes and experiments out there, but you may be able to get sockets & tokio working
Ludea (Jul 29 2025 at 10:16):There is also https://gist.github.com/pimeys/856846ff8718247d79f1557ed82d80f7
Ralph (Jul 29 2025 at 12:01):in short, we await v0.3.0.x for direct compilation here.
Joel Dice (Jul 29 2025 at 13:50):Ralph said:
in short, we await v0.3.0.x for direct compilation here.
I doubt 0.3.x will make any difference regarding wasi-sockets support in mio, tokio and socket2. There are no technical obstacles to supporting WASIp2 sockets in any of those libraries, and I don't expect WASIp3 sockets to be significantly more or less difficult to support in comparison. What might help is WASI 1.0, though -- it would be a sign of stability and make the platform more attractive to library maintainers.
blender man (Jul 29 2025 at 22:56):Thank you for the suggestions and in my case where I am using wasm components as plugins and wasmtime as host and I cant really use web or host implementations but the good thing is as suggested, I can use the forks of tokio and socket2 which works with wasi sockets and by using them hopefully I should able to compile webrtc crate, which is perfect for my case as I needed plugin only implementation and using custom forks should be fine temporarily as I am using it for demo purposes only, tho it would be great if they get merged in crates itself.
Victor Adossi (Jul 30 2025 at 06:49):Would be great if you shared that progress here (whatever you can open source) -- I'm sure people would love to :eye: :eye: the code!
blender man (Jul 30 2025 at 15:08):I am not able to compile webrtc because of udp sockets, is udp not implemented yet for mio and tokio?
Joel Dice (Jul 30 2025 at 15:16):Sorry, no -- my mio PR only supports TCP sockets so far. Adding UDP support should be straightforward, though -- it's supported in wasi-libc, so it should just be a matter of hooking that up to mio.
blender man (Jul 31 2025 at 08:36):Ah, that's unfortunate-but makes sense. Honestly, I'm not super deep into sockets or wasi-libc myself, so I might be missing some of the knowledge required there. If anyone more familiar with this stuff is up for it, a PR adding UDP support would be massively appreciated!
Last updated: Dec 06 2025 at 05:03 UTC