Show HN: BBRv3 for gVisor's netstack, visualized in the browser

Dmitry from Apoxy has built a BBRv3 congestion control implementation for gVisor's netstack, compiled it into WASM, and made it run in the browser with visualizations from the original BBR paper. The project uses Fable 5 and GPT-5.6 Sol, conforms to the -03 draft spec, and is open-source on GitHub. An accompanying blog explains congestion control basics and BBR insights.

Hello HN, We’ve built a BBRv3 congestion control implementation for gVisor’s netstack userspace Linux TCP/IP stack implementation in Go . As part of testing it I realized we can actually compile the whole thing into WASM and run it from the browser to get some cool visualizations from the original BBR paper: https://research.google/pubs/bbr-congestion-based-congestion... https://research.google/pubs/bbr-congestion-based-congestion-control-2/ The project is built using Fable 5 and GPT-5.6 Sol. I’ve manually reviewed actual BBRv3 implementation line-by-line, fixed bugs and made it to conform to -03 draft spec well, mostly . The react/wasm bindings code was only lightly skimmed and obvious UI issues were chased out - there was a lot. If you’d like learn more, there’s an accompanying no pun intended blog explaining CC basics and BBR insights: https://apoxy.dev/blog/netstack-bbrv3 https://apoxy.dev/blog/netstack-bbrv3 The code: https://github.com/apoxy-dev/ccsim https://github.com/apoxy-dev/ccsim If anyone has ideas what other cool things we can simulate with this stack please share Cheers, -Dmitry Comments URL: https://news.ycombinator.com/item?id=49008138 https://news.ycombinator.com/item?id=49008138 Points: 1 Comments: 0