Subj : sexyz ZMODEM sender throughput ~30x slower than lrzsz (output-thread r
To   : GitLab note in main/sbbs
From : Deucе
Date : Fri Jul 24 2026 08:47:17

https://gitlab.synchro.net/main/sbbs/-/issues/1195#note_9680

It's worth noting that the windowed and streaming protocols both assume that unacked data is in-flight (that's the entire point of these). If error recovery doesn't work when data is in flight, that points strongly to a problem with the error recovery paths, *not* a problem with the buffering behaviour.

Using broken error recovery as an excuse to subvert the entire purpose of windowed and streaming modes is inexcusable.
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