RoR2ItemSync

RoR2ItemSync A Risk of Rain 2 mod that broadcasts your run data over WebSocket, enabling stream overlays and companion apps to display your game state in real time. What it syncs Multiplayer - data for all players in the lobby, selectable by companion apps Inventory - all items and equipment with names, counts, and tiers Player stats - health, damage, attack speed, crit, move speed, armor, regen, shield, level World state - remaining chests, shops, equipment barrels, printers, ground items, command essences Run info - survivor name, stage number, stage name, difficulty, active artifacts How it works The mod runs a WebSocket server on port 11420 . Any client on the local network can connect to receive JSON updates roughly once per second. The mod also broadcasts a UDP discovery beacon on port 11421 so companion apps can find the server automatically. For overlay/app developers Connect to ws://<host-ip>:11420/ to receive messages: inventory_update Sent every second while a run is active. Contains the full game state snapshot. run_ended Sent when the run ends (death, victory, or quit). request_challenges (client → server) Sent by a client to request the current challenge/achievement list. Send this on connect (or whenever the client wants a refresh) — the server does not push challenges automatically. { "type": "request_challenges" } challenges (server → requesting client) Reply to request_challenges . Sent only to the requesting session, not broadcast. { "type": "challenges", "challenges": } Auto-discovery The mod sends a UDP multicast/broadcast beacon every 2 seconds: ROR2SYNC:<ip>:<port>:<version> It also responds to DISCOVER UDP packets on port 11421 . Requirements BepInExPack HookGenPatcher Both are installed automatically when using r2modman or Thunderstore Mod Manager. Installation Install via r2modman or Thunderstore Mod Manager (recommended), or Manually place RoR2ItemSync.dll in your BepInEx/plugins folder (ensure the requirements above are installed) Configuration No configuration needed. The mod runs automatically when the game starts.