feat: Audio-Eingang über WebSocket (/ws/voice) - Sprach-zu-Sprach (#4 Ausbau)
- /ws/voice: binaere Audio-Frames puffern, {"type":"end"} -> STT-Transkription
-> transcript-Event -> bestehende Antwort-Pipeline (ack/token/audio/semantic/done)
- ws.py refaktoriert: gemeinsame _resolve + _run_turn fuer /ws/chat und /ws/voice
- stream/audio_stream auch fuer Sprach-Turns nutzbar; mehrere Utterances pro Verbindung
- Tests: 47 gruen (+2: Transkript->Antwort, leerer Puffer)
- Doku aktualisiert (README, BEDIENUNGSANLEITUNG, Architektur)
Hinweis: STT pro Aeusserung (gepuffert); partielle Live-Transkripte (Streaming-STT
mit VAD) bleiben naechster Increment.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
parent
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5 changed files with 233 additions and 98 deletions
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@ -278,6 +278,10 @@ als `token`-Events (geringere wahrgenommene Latenz). Mit `"audio_stream": true`
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kommt zusätzlich das Audio satzweise (`audio`-Event + binärer Frame), sobald ein
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kommt zusätzlich das Audio satzweise (`audio`-Event + binärer Frame), sobald ein
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Satz fertig ist.
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Satz fertig ist.
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**Sprach-Eingang** (`/ws/voice`): Mikrofon-Audio als binäre Frames senden, dann
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`{"type":"end"}`. Der Server schickt ein `transcript`-Event und danach die Antwort
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wie bei `/ws/chat` (`stream`/`audio_stream` im `end`-Frame möglich).
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> **Für lokale Entwicklung** ist in der mitgelieferten `.env` `AUTH_ENABLED=false`
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> **Für lokale Entwicklung** ist in der mitgelieferten `.env` `AUTH_ENABLED=false`
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> gesetzt — dann ist kein Token nötig (anonymer Nutzer).
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> gesetzt — dann ist kein Token nötig (anonymer Nutzer).
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@ -171,7 +171,8 @@ ein No-op; `LoopbackOutput` sammelt die Chunks (testbar ohne Hardware).
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| `POST /api/admin/users` | Nutzer anlegen (Admin-Key) → Token einmalig |
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| `POST /api/admin/users` | Nutzer anlegen (Admin-Key) → Token einmalig |
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| `GET /api/me` · `PUT /api/me/prefs` | aktueller Nutzer + dauerhafte Präferenzen |
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| `GET /api/me` · `PUT /api/me/prefs` | aktueller Nutzer + dauerhafte Präferenzen |
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| `GET/POST/DELETE /api/me/memories` | Langzeit-Erinnerungen des Nutzers |
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| `GET/POST/DELETE /api/me/memories` | Langzeit-Erinnerungen des Nutzers |
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| `WS /ws/chat` | Echtzeit-Chat (Streaming-Events über WebSocket) |
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| `WS /ws/chat` | Echtzeit-Chat (Text rein, Streaming-Events) |
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| `WS /ws/voice` | Echtzeit-Sprache (Audio rein → STT → Antwort) |
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Endpunkt-/Provider-Auswahl ist über **Request-Body** (pro Aufruf), **Session**
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Endpunkt-/Provider-Auswahl ist über **Request-Body** (pro Aufruf), **Session**
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(`?session_id=…`) und **Defaults/Profil** steuerbar. Verwendete Route erscheint als
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(`?session_id=…`) und **Defaults/Profil** steuerbar. Verwendete Route erscheint als
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@ -187,8 +188,8 @@ Device Router (strikt, Singleton); Output-Lifecycle; **Authentifizierung
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+ dauerhafte Nutzer-Präferenzen**; **Gesprächsgedächtnis pro Session (Verlauf im
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+ dauerhafte Nutzer-Präferenzen**; **Gesprächsgedächtnis pro Session (Verlauf im
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Store, fließt ins LLM)**; **Langzeit-Erinnerungen pro Nutzer (als LLM-Kontext)**;
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Store, fließt ins LLM)**; **Langzeit-Erinnerungen pro Nutzer (als LLM-Kontext)**;
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**WebSocket-Streaming-Chat (`/ws/chat`) inkl. Token-Level-LLM-Streaming (SSE,
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**WebSocket-Streaming-Chat (`/ws/chat`) inkl. Token-Level-LLM-Streaming (SSE,
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`stream:true`) und satzweisem Audio-Streaming (chunked TTS, `audio_stream:true`)**;
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`stream:true`) und satzweisem Audio-Streaming (chunked TTS, `audio_stream:true`)**; **Sprach-Eingang
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automatisierte Tests.
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über WebSocket (`/ws/voice`: Audio rein → STT → Antwort-Pipeline)**; automatisierte Tests.
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**Platzhalter (Gerüst):** Audio-Endpunkte (`local-default`, `bluetooth`,
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**Platzhalter (Gerüst):** Audio-Endpunkte (`local-default`, `bluetooth`,
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`mobile-ws`, `mobile-webrtc`) liefern leere Chunks — nur Auswahl/Lifecycle sind
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`mobile-ws`, `mobile-webrtc`) liefern leere Chunks — nur Auswahl/Lifecycle sind
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@ -203,7 +204,7 @@ Reihenfolge der Weiterentwicklung:
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1. **(erledigt)** Konfig- & Routing-Fundament: Profile, Device Router, Registry, Pro-Request-Override.
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1. **(erledigt)** Konfig- & Routing-Fundament: Profile, Device Router, Registry, Pro-Request-Override.
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2. **(erledigt)** Cloud-Fundament: Bearer-Token-Auth, Mehrbenutzer, persistenter SQLite-Store, Mandanten-Trennung, dauerhafte Nutzer-Präferenzen. Offen: Skalierung auf gemeinsamen Store (Postgres/Redis) für mehrere Instanzen.
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2. **(erledigt)** Cloud-Fundament: Bearer-Token-Auth, Mehrbenutzer, persistenter SQLite-Store, Mandanten-Trennung, dauerhafte Nutzer-Präferenzen. Offen: Skalierung auf gemeinsamen Store (Postgres/Redis) für mehrere Instanzen.
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3. **(erledigt)** Konversationsgedächtnis: Kurzzeit-Gesprächsverlauf pro Session + Langzeit-Erinnerungen pro Nutzer (manuell gepflegt, als LLM-Kontext). Offen: **automatische** Extraktion/Zusammenfassung von Erinnerungen aus Gesprächen.
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3. **(erledigt)** Konversationsgedächtnis: Kurzzeit-Gesprächsverlauf pro Session + Langzeit-Erinnerungen pro Nutzer (manuell gepflegt, als LLM-Kontext). Offen: **automatische** Extraktion/Zusammenfassung von Erinnerungen aus Gesprächen.
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4. **(teilweise erledigt)** Echtzeit: WebSocket-Streaming-Chat (`/ws/chat`), **Token-Level-LLM-Streaming (SSE, `stream:true`)** und **Audio-Streaming (chunked TTS satzweise, `audio_stream:true`)** sind umgesetzt. Offen: **Audio-Eingang/Streaming-STT**, **Barge-in/Turn-Manager**, **WebRTC**.
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4. **(teilweise erledigt)** Echtzeit: WebSocket-Streaming-Chat (`/ws/chat`), **Token-Level-LLM-Streaming (SSE, `stream:true`)**, **Audio-Streaming (chunked TTS satzweise, `audio_stream:true`)** und **Audio-Eingang (`/ws/voice`: binaere Chunks -> STT -> Antwort-Pipeline)** sind umgesetzt. Offen: **partielle Live-Transkripte (Streaming-STT mit VAD)**, **Barge-in/Turn-Manager**, **WebRTC**.
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5. **Resilienz:** Fallback-Policy (remote KI fällt aus → lokaler/alternativer Provider), Metriken/Tracing.
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5. **Resilienz:** Fallback-Policy (remote KI fällt aus → lokaler/alternativer Provider), Metriken/Tracing.
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6. **Betrieb:** Kosten-/Quota-Kontrolle pro Nutzer; Notfall-/Eskalationskonzept (Senioren-Kontext).
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6. **Betrieb:** Kosten-/Quota-Kontrolle pro Nutzer; Notfall-/Eskalationskonzept (Senioren-Kontext).
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7. **TransportRouter** als eigene lokal/remote-Achse aktivieren.
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7. **TransportRouter** als eigene lokal/remote-Achse aktivieren.
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13
README.md
13
README.md
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@ -88,7 +88,8 @@ Aktive Konfiguration prüfen: `curl http://localhost:8080/api/config`.
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| `GET /api/me` | aktueller Nutzer + Präferenzen |
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| `GET /api/me` | aktueller Nutzer + Präferenzen |
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| `PUT /api/me/prefs` | dauerhafte Routing-Präferenzen des Nutzers setzen |
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| `PUT /api/me/prefs` | dauerhafte Routing-Präferenzen des Nutzers setzen |
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| `GET/POST/DELETE /api/me/memories` | Langzeit-Erinnerungen des Nutzers verwalten |
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| `GET/POST/DELETE /api/me/memories` | Langzeit-Erinnerungen des Nutzers verwalten |
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| `WS /ws/chat` | Echtzeit-Chat über WebSocket (Streaming-Events) |
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| `WS /ws/chat` | Echtzeit-Chat über WebSocket (Text rein, Streaming-Events) |
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| `WS /ws/voice` | Echtzeit-Sprache (Audio rein → Transkript → Antwort) |
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Beispiel (Sprachausgabe an den Test-Loopback, lokaler TTS-Stub):
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Beispiel (Sprachausgabe an den Test-Loopback, lokaler TTS-Stub):
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@ -142,8 +143,14 @@ via SSE; Provider ohne Streaming liefern die komplette Antwort als ein `token`-E
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mit `seq` + binärer Frame) gesendet — die Ausgabe beginnt, bevor die Antwort fertig
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mit `seq` + binärer Frame) gesendet — die Ausgabe beginnt, bevor die Antwort fertig
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ist. `stream` und `audio_stream` lassen sich kombinieren.
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ist. `stream` und `audio_stream` lassen sich kombinieren.
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> Audio-Eingang/Streaming-STT, Barge-in/Turn-Manager und WebRTC sind als nächste
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**Sprach-Eingang (`/ws/voice`):** Der Client streamt Mikrofon-Audio als binäre
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> Increments vorgesehen (siehe Architektur-Dokument).
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Frames; ein `{"type":"end"}`-Control-Frame schließt die Äußerung ab. Der Server
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transkribiert (STT), sendet ein `transcript`-Event und durchläuft dann dieselbe
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Antwort-Pipeline wie `/ws/chat` (inkl. `stream`/`audio_stream`). Damit ist
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Sprach-zu-Sprach-Konversation über einen Kanal möglich.
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> Partielle Live-Transkripte (Streaming-STT mit VAD), Barge-in/Turn-Manager und
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> WebRTC sind als nächste Increments vorgesehen (siehe Architektur-Dokument).
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## Authentifizierung
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## Authentifizierung
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199
app/api/ws.py
199
app/api/ws.py
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@ -1,14 +1,18 @@
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"""WebSocket-Streaming-Chat (Echtzeit-Transport, erster Increment).
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"""WebSocket-Echtzeit-Chat und -Sprache.
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Etabliert einen dauerhaften, bidirektionalen Kanal: der Client schickt pro Turn
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- /ws/chat : Text rein (JSON pro Turn), Antwort als Event-Folge zurueck.
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eine JSON-Nachricht, der Server streamt strukturierte Events zurueck
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- /ws/voice: Audio rein (binaere Chunks + Control), Transkription -> selbe Pipeline.
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(ack -> semantic -> audio (binaer) -> done). Auth, Session-Gedaechtnis und
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Langzeit-Erinnerungen gelten wie bei POST /api/chat.
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Bewusst spaeter (eigene Increments): Token-Level-LLM-Streaming, Audio-Eingang/
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Event-Folge der Antwort: ack -> [token*] -> [audio*] -> semantic -> done.
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Streaming-STT, Barge-in/Interrupt und WebRTC.
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Mit {"stream":true} kommen LLM-Token live, mit {"audio_stream":true} das Audio
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satzweise (chunked TTS). /ws/voice sendet zuvor ein transcript-Event.
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Spaeter (eigene Increments): partielle Live-Transkripte (Streaming-STT mit VAD),
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Barge-in/Turn-Manager und WebRTC.
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"""
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"""
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import json
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from fastapi import APIRouter, WebSocket, WebSocketDisconnect
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from fastapi import APIRouter, WebSocket, WebSocketDisconnect
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from app.config import settings
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from app.config import settings
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router = APIRouter()
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router = APIRouter()
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_OVERRIDE_KEYS = (
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"input_endpoint",
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"output_endpoint",
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"language",
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"stt_provider",
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"llm_provider",
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"tts_provider",
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)
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def _authenticate(token: str | None):
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def _authenticate(token: str | None):
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store = get_store()
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store = get_store()
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@ -33,58 +46,23 @@ def _authenticate(token: str | None):
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return store.get_user_by_token(token)
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return store.get_user_by_token(token)
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@router.websocket("/ws/chat")
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async def _resolve(user, session_id, options):
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async def ws_chat(
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"""Loest Route + Orchestrator + Output-Endpunkt auf (kann RoutingError/Ownership werfen)."""
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websocket: WebSocket,
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overrides = {key: options.get(key) for key in _OVERRIDE_KEYS}
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session_id: str | None = None,
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token: str | None = None,
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):
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user = _authenticate(token)
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if user is None:
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# Vor accept() schliessen -> Handshake wird mit 403 abgelehnt.
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await websocket.close(code=1008)
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return
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await websocket.accept()
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store = get_store()
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try:
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while True:
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msg = await websocket.receive_json()
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text = (msg.get("text") or "").strip()
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if not text:
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await websocket.send_json({"type": "error", "detail": "empty text"})
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continue
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overrides = {
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key: msg.get(key)
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for key in (
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"input_endpoint",
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"output_endpoint",
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"language",
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"stt_provider",
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"llm_provider",
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"tts_provider",
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)
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}
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try:
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route = resolve_route(user, session_id, overrides)
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route = resolve_route(user, session_id, overrides)
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orchestrator = build_orchestrator(route)
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orchestrator = build_orchestrator(route)
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output = await resolve_output_endpoint(route)
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output = await resolve_output_endpoint(route)
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return route, orchestrator, output
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async def _run_turn(websocket, store, user, session_id, route, orchestrator, output, text, options):
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"""Faehrt einen Antwort-Turn und streamt die Events an den Client."""
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conversation = (
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conversation = (
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store.get_recent_messages(session_id, settings.history_max_messages)
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store.get_recent_messages(session_id, settings.history_max_messages)
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if session_id
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if session_id
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else []
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else []
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)
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)
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memories = store.get_memories(user.id)
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memories = store.get_memories(user.id)
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except SessionOwnershipError as exc:
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await websocket.send_json({"type": "error", "status": 403, "detail": str(exc)})
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continue
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except RoutingError as exc:
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await websocket.send_json({"type": "error", "status": 422, "detail": str(exc)})
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continue
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llm_context = list(conversation)
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llm_context = list(conversation)
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if memories:
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if memories:
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memory_text = "Was du ueber den Nutzer weisst:\n" + "\n".join(
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memory_text = "Was du ueber den Nutzer weisst:\n" + "\n".join(
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await websocket.send_json({"type": "ack", "route": route.as_dict()})
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await websocket.send_json({"type": "ack", "route": route.as_dict()})
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voice = msg.get("voice") or settings.openrouter_tts_voice
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voice = options.get("voice") or settings.openrouter_tts_voice
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stream = bool(msg.get("stream"))
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stream = bool(options.get("stream"))
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audio_stream = bool(msg.get("audio_stream"))
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audio_stream = bool(options.get("audio_stream"))
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on_token = None
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on_token = None
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if stream:
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if stream:
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)
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)
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except Exception as exc:
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except Exception as exc:
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await websocket.send_json({"type": "error", "status": 502, "detail": str(exc)})
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await websocket.send_json({"type": "error", "status": 502, "detail": str(exc)})
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continue
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return
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if session_id:
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if session_id:
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store.append_message(session_id, user.id, "user", text)
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store.append_message(session_id, user.id, "user", text)
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store.append_message(session_id, user.id, "assistant", trace.semantic_response)
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store.append_message(session_id, user.id, "assistant", trace.semantic_response)
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await websocket.send_json(
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await websocket.send_json(
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{
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{"type": "semantic", "text": trace.semantic_response, "spoken": trace.spoken_response}
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"type": "semantic",
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"text": trace.semantic_response,
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"spoken": trace.spoken_response,
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}
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)
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)
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# Bei audio_stream wurden die Audio-Chunks bereits live gesendet.
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if not audio_stream:
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if not audio_stream:
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await websocket.send_bytes(audio)
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await websocket.send_bytes(audio)
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await websocket.send_json(
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await websocket.send_json({"type": "done", "audio_format": "pcm", "sample_rate": 24000})
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{"type": "done", "audio_format": "pcm", "sample_rate": 24000}
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@router.websocket("/ws/chat")
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async def ws_chat(websocket: WebSocket, session_id: str | None = None, token: str | None = None):
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user = _authenticate(token)
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if user is None:
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await websocket.close(code=1008)
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return
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await websocket.accept()
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store = get_store()
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try:
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while True:
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msg = await websocket.receive_json()
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text = (msg.get("text") or "").strip()
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if not text:
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await websocket.send_json({"type": "error", "detail": "empty text"})
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continue
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try:
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route, orchestrator, output = await _resolve(user, session_id, msg)
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except SessionOwnershipError as exc:
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await websocket.send_json({"type": "error", "status": 403, "detail": str(exc)})
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continue
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except RoutingError as exc:
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await websocket.send_json({"type": "error", "status": 422, "detail": str(exc)})
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continue
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await _run_turn(websocket, store, user, session_id, route, orchestrator, output, text, msg)
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except WebSocketDisconnect:
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return
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@router.websocket("/ws/voice")
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async def ws_voice(websocket: WebSocket, session_id: str | None = None, token: str | None = None):
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user = _authenticate(token)
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||||||
|
if user is None:
|
||||||
|
await websocket.close(code=1008)
|
||||||
|
return
|
||||||
|
await websocket.accept()
|
||||||
|
store = get_store()
|
||||||
|
|
||||||
|
audio_buffer = bytearray()
|
||||||
|
fmt = "wav"
|
||||||
|
|
||||||
|
try:
|
||||||
|
while True:
|
||||||
|
message = await websocket.receive()
|
||||||
|
if message["type"] == "websocket.disconnect":
|
||||||
|
return
|
||||||
|
|
||||||
|
if message.get("bytes") is not None:
|
||||||
|
audio_buffer.extend(message["bytes"])
|
||||||
|
continue
|
||||||
|
|
||||||
|
raw = message.get("text")
|
||||||
|
if raw is None:
|
||||||
|
continue
|
||||||
|
try:
|
||||||
|
control = json.loads(raw)
|
||||||
|
except ValueError:
|
||||||
|
await websocket.send_json({"type": "error", "detail": "invalid control frame"})
|
||||||
|
continue
|
||||||
|
|
||||||
|
ctype = control.get("type")
|
||||||
|
if ctype == "start":
|
||||||
|
audio_buffer.clear()
|
||||||
|
fmt = control.get("format", "wav")
|
||||||
|
continue
|
||||||
|
if ctype != "end":
|
||||||
|
continue
|
||||||
|
|
||||||
|
if not audio_buffer:
|
||||||
|
await websocket.send_json({"type": "error", "detail": "no audio received"})
|
||||||
|
continue
|
||||||
|
|
||||||
|
try:
|
||||||
|
route, orchestrator, output = await _resolve(user, session_id, control)
|
||||||
|
except SessionOwnershipError as exc:
|
||||||
|
await websocket.send_json({"type": "error", "status": 403, "detail": str(exc)})
|
||||||
|
audio_buffer.clear()
|
||||||
|
continue
|
||||||
|
except RoutingError as exc:
|
||||||
|
await websocket.send_json({"type": "error", "status": 422, "detail": str(exc)})
|
||||||
|
audio_buffer.clear()
|
||||||
|
continue
|
||||||
|
|
||||||
|
try:
|
||||||
|
transcript = await orchestrator.stt.transcribe(
|
||||||
|
bytes(audio_buffer), fmt=fmt, language=route.language
|
||||||
|
)
|
||||||
|
except Exception as exc:
|
||||||
|
await websocket.send_json({"type": "error", "status": 502, "detail": str(exc)})
|
||||||
|
audio_buffer.clear()
|
||||||
|
continue
|
||||||
|
finally:
|
||||||
|
audio_buffer.clear()
|
||||||
|
|
||||||
|
await websocket.send_json({"type": "transcript", "text": transcript})
|
||||||
|
if not transcript or not transcript.strip():
|
||||||
|
await websocket.send_json({"type": "error", "detail": "empty transcript"})
|
||||||
|
continue
|
||||||
|
|
||||||
|
await _run_turn(
|
||||||
|
websocket, store, user, session_id, route, orchestrator, output, transcript, control
|
||||||
)
|
)
|
||||||
except WebSocketDisconnect:
|
except WebSocketDisconnect:
|
||||||
return
|
return
|
||||||
|
|
|
||||||
|
|
@ -66,3 +66,51 @@ def test_ws_requires_token_when_auth_enabled(monkeypatch):
|
||||||
with pytest.raises(WebSocketDisconnect):
|
with pytest.raises(WebSocketDisconnect):
|
||||||
with client.websocket_connect("/ws/chat"):
|
with client.websocket_connect("/ws/chat"):
|
||||||
pass
|
pass
|
||||||
|
|
||||||
|
|
||||||
|
def _install_voice_stubs(monkeypatch):
|
||||||
|
class StubSTT:
|
||||||
|
async def transcribe(self, audio_bytes, fmt, language=None):
|
||||||
|
return f"erkannt({len(audio_bytes)})"
|
||||||
|
|
||||||
|
class StubLLM:
|
||||||
|
async def complete(self, text, history=None, session_id=None):
|
||||||
|
return f"Antwort zu {text}"
|
||||||
|
|
||||||
|
class StubTTS:
|
||||||
|
async def synthesize(self, text, voice=None, audio_format="pcm"):
|
||||||
|
return b"VOICEAUD"
|
||||||
|
|
||||||
|
monkeypatch.setitem(deps.STT_REGISTRY, "ss", lambda s: StubSTT())
|
||||||
|
monkeypatch.setitem(deps.LLM_REGISTRY, "ll", lambda s: StubLLM())
|
||||||
|
monkeypatch.setitem(deps.TTS_REGISTRY, "tt", lambda s: StubTTS())
|
||||||
|
return {
|
||||||
|
"stt_provider": "ss",
|
||||||
|
"llm_provider": "ll",
|
||||||
|
"tts_provider": "tt",
|
||||||
|
"output_endpoint": "loopback",
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
def test_ws_voice_transcribes_and_answers(monkeypatch):
|
||||||
|
opts = _install_voice_stubs(monkeypatch)
|
||||||
|
with client.websocket_connect("/ws/voice?session_id=v1") as ws:
|
||||||
|
ws.send_bytes(b"PCMDATA") # 7 Bytes
|
||||||
|
ws.send_bytes(b"MORE") # 4 Bytes -> insgesamt 11
|
||||||
|
ws.send_json({"type": "end", **opts})
|
||||||
|
|
||||||
|
transcript = ws.receive_json()
|
||||||
|
assert transcript["type"] == "transcript" and transcript["text"] == "erkannt(11)"
|
||||||
|
assert ws.receive_json()["type"] == "ack"
|
||||||
|
semantic = ws.receive_json()
|
||||||
|
assert semantic["type"] == "semantic" and semantic["text"] == "Antwort zu erkannt(11)"
|
||||||
|
assert ws.receive_bytes() == b"VOICEAUD"
|
||||||
|
assert ws.receive_json()["type"] == "done"
|
||||||
|
|
||||||
|
|
||||||
|
def test_ws_voice_empty_buffer_errors(monkeypatch):
|
||||||
|
opts = _install_voice_stubs(monkeypatch)
|
||||||
|
with client.websocket_connect("/ws/voice") as ws:
|
||||||
|
ws.send_json({"type": "end", **opts}) # kein Audio gesendet
|
||||||
|
err = ws.receive_json()
|
||||||
|
assert err["type"] == "error" and "no audio" in err["detail"]
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue