Small memory leak on socketio - was double compressing

changedetectionio/flask_app.py

@@ -71,9 +71,13 @@ socketio_server = None
 CORS(app)
 
 # Super handy for compressing large BrowserSteps responses and others
-FlaskCompress(app)
-app.config['COMPRESS_MIN_SIZE'] = 4096
+# Flask-Compress handles HTTP compression, Socket.IO compression disabled to prevent memory leak
+compress = FlaskCompress()
+app.config['COMPRESS_MIN_SIZE'] = 2096
 app.config['COMPRESS_MIMETYPES'] = ['text/html', 'text/css', 'text/javascript', 'application/json', 'application/javascript', 'image/svg+xml']
+# Use gzip only - smaller memory footprint than zstd/brotli (4-8KB vs 200-500KB contexts)
+app.config['COMPRESS_ALGORITHM'] = ['gzip']
+compress.init_app(app)
 app.config['TEMPLATES_AUTO_RELOAD'] = False
 
 

changedetectionio/realtime/socket_server.py

@@ -240,7 +240,10 @@ def init_socketio(app, datastore):
                         async_mode=async_mode,
                         cors_allowed_origins=cors_origins,  # None means same-origin only
                         logger=strtobool(os.getenv('SOCKETIO_LOGGING', 'False')),
-                        engineio_logger=strtobool(os.getenv('SOCKETIO_LOGGING', 'False')))
+                        engineio_logger=strtobool(os.getenv('SOCKETIO_LOGGING', 'False')),
+                        # Disable WebSocket compression to prevent memory accumulation
+                        # Flask-Compress already handles HTTP response compression
+                        engineio_options={'http_compression': False, 'compression_threshold': 0})
 
     # Set up event handlers
     logger.info("Socket.IO: Registering connect event handler")