Plate 42
TCP_QUICKACK Lab: Delayed ACK, Set-Once, and the Reassert Trap
Hands-on TCP_QUICKACK lab: default QA=1 on loopback; WWR set-once ~18 µs; reassert QA=1 under Nagle p95 ~48 ms, OutSegs ~13×. Real numbers, no Docker.
Summary30 Sept 2026 · 7 min