Reverse-engineering an MMO Aion 2's network protocol to build a real-time DPS meter (Rust + Tauri)

Short summary

A developer built a real-time DPS meter for AION 2 using Rust and Tauri that passively captures TCP traffic, reverse-engineers the undocumented game protocol, and attributes combat performance including support classes. The hardest challenges were entity identity canonicalization across ID re-binds and building an rDPS attribution model that credits buff/debuff contributions correctly. The tool survived multiple game patches and supports a community leaderboard with full build snapshots.

• •Rust + Tauri desktop app passively captures game TCP traffic without client injection
• •Entity identity canonicalization is the core challenge—player IDs change between dungeon pulls
• •rDPS attribution model credits buff/debuff contributions to support classes, not just raw damage

Generated with AI, which can make mistakes.