[lwip-devel] [task #14128] Appropriate byte counting/stretch ACK support

[Ambroz Bizjak]

Follow-up Comment #4, task #14128 (project lwip):

Hi everyone,

Perhaps RFC 5681 is more relevant here, it is newer and includes specific
provisions regarding updates of cwnd and ssthresh. I've looked at the Linux
code some time ago and it seems pretty close to the RFC, though I think it's
more complex because it tries to be "better".

https://github.com/torvalds/linux/blob/master/net/ipv4/tcp_cong.c

Also I have my own implementation of things described in RFC 5681 (Slow Start,
Congestion Avoidance, Fast Recovery) and RFC 6582 (NewReno). Perhaps it may be
of use to anyone, but it's not extensively tested.

https://github.com/ambrop72/aprinter/blob/ipstack/aipstack/tcp/IpTcpProto_output.h#L440
(and look for other places where cwnd is used)

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