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fn_registry/dev/issues/0151-matrix-client-pc-livekit-calls.md
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egutierrez daef7ea190 feat(matrix): MAS migration helpers + 2 flows + 15 issues + capability group
Helper functions (matrix-mas capability group):
- mas_client_register_bash_infra: register/sync OAuth clients via mas-cli
- mas_syn2mas_migration_bash_infra: dry-run + apply user migration to MAS
- synapse_msc3861_enable_go_infra: edit homeserver.yaml MSC3861 block (with diff)
- wellknown_oidc_patch_go_infra: patch well-known JSON with msc2965.authentication
- synapse_login_flows_check_go_infra: health-check post-migration login flows

Flows + issues for custom Matrix clients (PC + Android):
- 0010 matrix-client-pc: Wails + React+Mantine (issues 0147-0153)
- 0011 matrix-client-android: Kotlin + Compose (issues 0154-0161)
- 0162 enable MAS as auth provider (Synapse delegate) — EXECUTED on VPS
- 0163 custom admin panel propio (sustituye synapse-admin)

Production state (organic-machine.com):
- Synapse migrated SQLite -> Postgres
- MSC3861 active, password_config disabled
- 21 users + 41 access_tokens migrated via syn2mas
- 4 MAS clients registered (element, matrix_pc, matrix_android, admin_panel)
- synapse-admin container removed + Coolify route deleted
- well-known patched with org.matrix.msc2965.authentication

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-24 22:53:33 +02:00

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---
id: "0151"
title: "matrix-client-pc calls LiveKit: 1:1 + grupales, mic/cam/screen"
status: pending
priority: high
created: 2026-05-24
related_flows: ["0010"]
related_issues: ["0150", "0152"]
dependencies: ["0150"]
tags: [matrix, livekit, calls, webrtc, video, audio, screen-share]
---
## Objetivo
Llamadas via LiveKit SFU (ya activo en `organic-machine.com:7880-7882`). Backend Go genera JWT con `livekit-server-sdk-go`. Frontend React usa `livekit-client` JS para join room, manejar tracks (mic/cam/screen), UI con tiles participantes, controles. Soporta 1:1 + grupales hasta 16 (limite config actual).
## Tareas
1. Backend Go:
- `MatrixService.RequestCallToken(matrixRoomID) -> (token, livekitRoomURL)`.
- Mapea Matrix roomID -> LiveKit room name (hash determinista).
- Genera JWT con claim `room`, `identity` (matrix userID), `ttl 30min`.
- Permisos: `canPublish=true, canSubscribe=true, canPublishData=true`.
- Publicar event Matrix `m.call.member` para sincronizar quien esta en call (MSC3401).
2. Frontend React:
- Hook `useLiveKitCall(matrixRoomID)`:
- Pide token al backend.
- Conecta `Room` de `livekit-client`.
- Expone participants, tracks, localTracks, state.
- Auto-publish microfono on connect (mute default).
- Componente `CallPanel`:
- Grid tiles participantes (1, 2, 4, 9, 16 layout).
- Tile principal con speaker activo (active-speaker detection del SDK).
- Controles bottom: mic, cam, screen share, raise hand, leave.
- PiP mode: cuando minimizado, tile flotante en esquina.
- Boton "Start call" en header del room (icono telefono).
- Boton "Join call" si hay call activa (segun `m.call.member` events).
- Notifs ring incoming call: audio + desktop notif.
3. Backend ICE/TURN:
- Verificar LiveKit config tiene TURN configurado (NAT traversal). Si no, anadir coturn container.
4. Tests:
- `e2e/test_call_1to1.sh` — 2 clientes (Wails + Element Web), 30s call, audio+video flow.
- `e2e/test_call_screen_share.sh` — compartir pantalla, otro cliente ve el track.
- `e2e/test_call_4_participants.sh` — 4 clientes simultaneos, no crash.
## Funciones del registry a crear
- `livekit_token_gen_go_infra` — JWT generator con `livekit-server-sdk-go`.
- `matrix_call_member_go_infra` — wrapper para publicar/leer `m.call.member` state events.
- `useLiveKitCall_ts_ui` — hook React.
- `CallPanel_ts_ui` — componente UI completo de call.
- `CallTile_ts_ui` — tile individual con video + nombre + speaker indicator.
## Acceptance
- [ ] Boton "Start call" en room DM con otro user.
- [ ] Otro cliente (Element Web) ve ring + acepta -> 2 tiles con video+audio.
- [ ] Mute mic + apagar cam funciona y se refleja en el otro lado.
- [ ] Screen share: tile separado aparece para todos los participantes.
- [ ] 4 participantes simultaneos sin crash ni audio cortado.
- [ ] Hangup limpia recursos (no tracks fantasma, no peer connections abiertas).
## Notas
- LiveKit room name: `sha256(matrix_room_id + secret)` truncado a 32 chars. Asi cualquier cliente que conozca el matrix_room_id puede computar el room name (no es secret).
- Token TTL 30min, refresh proactivo a los 25min.
- Codecs: H.264 + VP8 fallback para compatibilidad navegadores. Audio: Opus 32kbps.
- E2EE en calls: LiveKit soporta E2EE simetrico (insertable streams API). TBD para version posterior — flow inicial usa SRTP only (cifrado SFU<->client, no e2e).
- Sygnal push para incoming calls: enviar VoIP push con TTL bajo para wake-up moviles (relevante para issue 0158 Android).