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Add comment to explain working boundaries

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riccardom
2026-09-11 14:48:54 +02:00
parent 3efd4c94a0
commit 1ee012160b
1 changed files with 5 additions and 0 deletions
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client/internal/pqkem/manager.go
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@@ -27,6 +27,11 @@ const (
// REKEY_AFTER_TIME ~120s) so the rotation's own traffic — which itself renews the
// activity signal — ages out before the next rekey, letting an idle tunnel stop
// rotating instead of self-sustaining.
//
// INVARIANT: rotationActivityWindow < the gap between OnDataPathRekeyed calls. That
// gap converges to the WireGuard rehandshake interval (REKEY_AFTER_TIME 120s). Setting
// rotationActivityWindow to a value higher than 120s will make the rotation
// self-sustain (preventing going back to idle). Margin here is ~30s.
rotationActivityWindow = 90 * time.Second
)