The target frame's debuff icons had no countdown. libdebuff was tracking fine —
the probe run said `libdebuff guids: 2` after a fight, and the AURA_CAST_ON_OTHER
events carried the right lengths (spell 772 Rend, dur 9000) — because the timers
pfUI-for-ClassicAPI draws do not come through libdebuff at all. Its unit frames
read duration/expirationTime straight off C_UnitAuras.UnitAuraBySlot
(api/unitframes.lua:1680,1788), and libdebuff's own header says the plumbing
"now runs on ClassicAPI's C_UnitAuras (which provides sourceUnit/sourceGUID and
non-player expirationTime)". So the number came from us, and we answered 0 for
every unit but the player.
There is no packet to answer from: SMSG_UPDATE_AURA_DURATION is self-only, and
SMSG_SET_EXTRA_AURA_INFO — which carries a caster's durations on others — is a
2.0 opcode this protocol does not have. Hence every vanilla duration addon
keeping its own table. This is that table, kept client-side instead, because
this client *is* the client: SMSG_SPELL_GO names the spell and its hit list, so
the apply instant is the packet's own arrival rather than a combat-log line
somebody has to parse, and every reader of the aura lists gets the timer at once
instead of each inventing a tracker.
Keyed by (guid, spell) so a re-cast refreshes in place and a recycled slot
cannot inherit a stale stamp. Length comes from the same
ui_cast_events::aura_duration_ms behind nampower's arg8 and GetSpellDuration, so
the three cannot disagree, and its 0 — permanent, no SpellDuration.dbc row, or a
combo-point/level-scaled one — stamps nothing: a timerless icon beats one
counting to the wrong moment. The join is driven by the unit's own
UNIT_FIELD_AURA, so a stamp for an aura the target resisted is never read, and a
run-out stamp reports nothing rather than a negative remainder.
Not covered, by construction: an aura already on a unit before we streamed it,
and one applied out of our range. No GO, no timer — which is what the mods this
stands in for also do.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SgstFWtn1RxEJ5kVrpgYwn
gromandClaude Opus 5
80648267d5