Enhance Ticket management functionalities

app/__init__.py

@@ -32,7 +32,21 @@ def create_app(config_name=None):
     login_manager.init_app(app)
     mail.init_app(app)
     migrate.init_app(app, db)
-    socketio.init_app(app, async_mode='eventlet', cors_allowed_origins='*')
+    socketio.init_app(
+        app,
+        async_mode        = 'eventlet',
+        cors_allowed_origins = '*',
+        # Ping settings: server sends a ping every 25s, client has 60s to respond.
+        # This ensures dead connections are detected and closed cleanly rather than
+        # being torn down by nginx timeouts, which causes [Errno 9] Bad file descriptor.
+        ping_interval     = 25,
+        ping_timeout      = 60,
+        # Suppress eventlet's low-level socket error messages from flooding the log.
+        # The errors still occur occasionally (it's an eventlet limitation) but are
+        # benign — connections recover automatically via Socket.IO's reconnect logic.
+        logger            = False,
+        engineio_logger   = False,
+    )
 
     login_manager.login_view       = 'auth.login'
     login_manager.login_message    = 'Please log in to access this page.'