🚀 go-pugleaf

In article <1993Jan23.113544.5652@nmsu.edu> amolitor@moink.nmsu.edu (Andrew Molitor) writes:
>	Second, Nagle seems to be saying that a TCP should not
>send new data while unack'd data is outstanding, while Karn's
>code seems to not send new data while unack'd data is outstanding
>*unless* there is a max segment sized chunk to go out.

I thought the latter is what Nagle said, too, but I just went and reread
it, and I think you're right.  He doesn't talk about sending immediately
when one can send a full packet.  RFC 1122 amends the 896, though, and
1122 does say that one should not wait for an ack before sending an MSS-
sized packet.

Perhaps what happened is Jacobson's Slow Start and Congestion Avoidance
algorithms provided a better way to solve the broader congestion problem,
so Nagle's algorithm is now used only for smaller-than-MSS packets.

RFC 1122 has a nice description of how all of the different "when to send"
algorithms, including Nagle's, fit together.

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