[ignoramous]

If you fancy reading some rust, smoltcp [0] by u/whitequark_ [1] is a pretty good starting point, especially considering it intentionally leaves out functionality and compliance for the sake of simplicity and safety [2][3].

Then there are the more complete netmap [4] and lwIP [5] TCP/IP implementations too, but in C.

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[0] https://docs.rs/smoltcp/0.6.0/smoltcp/

[1] https://news.ycombinator.com/item?id=17896175

[2] https://github.com/smoltcp-rs/smoltcp/blob/master/README.md

[3] https://news.ycombinator.com/item?id=20241138

[4] http://info.iet.unipi.it/~luigi/netmap/

[5] https://www.nongnu.org/lwip/2_1_x/index.html

[ignoramous]

> Then there are the more complete netmap...

My bad. Netmap is a "kernel-network-stack bypass" mechanism [0]. Usually a userland TCP/IP implementation is used in conjunction with it [1].

Then there's NetStack for gVisor [2] in golang.

[0] https://news.ycombinator.com/item?id=10365731

[1] https://news.ycombinator.com/item?id=15630088

[2] https://news.ycombinator.com/item?id=15556398