up

server.py

@@ -576,12 +576,24 @@ async def init_app(base_path="") -> web.Application:
     
     # Add routes with CORS headers for WebSockets
     # Configure CORS for all routes
+    @web.middleware
     async def cors_middleware(request, handler):
-        response = await handler(request)
-        response.headers['Access-Control-Allow-Origin'] = '*'
-        response.headers['Access-Control-Allow-Methods'] = 'GET, POST, OPTIONS'
-        response.headers['Access-Control-Allow-Headers'] = 'Content-Type, X-Requested-With'
-        return response
+        if request.method == 'OPTIONS':
+            # Handle preflight requests
+            resp = web.Response()
+            resp.headers['Access-Control-Allow-Origin'] = '*'
+            resp.headers['Access-Control-Allow-Methods'] = 'GET, POST, OPTIONS'
+            resp.headers['Access-Control-Allow-Headers'] = 'Content-Type, X-Requested-With'
+            return resp
+            
+        # Normal request, call the handler
+        resp = await handler(request)
+        
+        # Add CORS headers to the response
+        resp.headers['Access-Control-Allow-Origin'] = '*'
+        resp.headers['Access-Control-Allow-Methods'] = 'GET, POST, OPTIONS'
+        resp.headers['Access-Control-Allow-Headers'] = 'Content-Type, X-Requested-With'
+        return resp
     
     app.middlewares.append(cors_middleware)
     
@@ -614,5 +626,6 @@ def parse_args() -> argparse.Namespace:
 
 if __name__ == '__main__':
     args = parse_args()
-    app = asyncio.run(init_app(base_path=args.path))
+    loop = asyncio.get_event_loop()
+    app = loop.run_until_complete(init_app(base_path=args.path))
     web.run_app(app, host=args.host, port=args.port)