Update app.py

app.py

@@ -131,13 +131,18 @@ async def tts(ws: WebSocket):
             ids, attn = None, None
 
     except (StopIteration, WebSocketDisconnect):
-        pass
+        pass                           # normales Ende
     except Exception as e:
         print("WS‑Error:", e)
-        await ws.close(code=1011)
+        if ws.client_state.name != "DISCONNECTED":
+            await ws.close(code=1011)  # Fehlercode nur, falls noch offen
     finally:
-        if ws.client_state.name!="DISCONNECTED":
-            await ws.close()
+        try:
+            if ws.client_state.name != "DISCONNECTED":
+                await ws.close()       # sauberes Close
+        except RuntimeError:
+            # Starlette hat bereits ein Close‑Frame verschickt
+            pass
 
 # ── 6. Lokaler Test ─────────────────────────────────────────────────
 if __name__ == "__main__":