# nw_path_monitor_t An observer that you use to monitor and react to network changes. ``` typealias nw_path_monitor_t = any OS_nw_path_monitor ``` ## Topics ### Creating Path Monitors [`nw_path_monitor_create()`](/documentation/Network/nw_path_monitor_create()) Initializes a path monitor to observe all available interface types. [`nw_path_monitor_create_with_type(_:)`](/documentation/Network/nw_path_monitor_create_with_type(_:)) Initializes a path monitor to observe a specific interface type. [`nw_path_monitor_prohibit_interface_type(_:_:)`](/documentation/Network/nw_path_monitor_prohibit_interface_type(_:_:)) Prohibit a path monitor from using a specific interface type. [`nw_path_monitor_set_queue(_:_:)`](/documentation/Network/nw_path_monitor_set_queue(_:_:)) Sets a queue on which to deliver path events. [`nw_path_monitor_start(_:)`](/documentation/Network/nw_path_monitor_start(_:)) Starts monitoring path changes. ### Handling Path Updates [`nw_path_monitor_set_update_handler(_:_:)`](/documentation/Network/nw_path_monitor_set_update_handler(_:_:)) Sets a handler to receive network path updates. [`nw_path_monitor_update_handler_t`](/documentation/Network/nw_path_monitor_update_handler_t) A handler that delivers network path updates. ### Canceling Path Monitors [`nw_path_monitor_cancel(_:)`](/documentation/Network/nw_path_monitor_cancel(_:)) Stops receiving network path updates. [`nw_path_monitor_set_cancel_handler(_:_:)`](/documentation/Network/nw_path_monitor_set_cancel_handler(_:_:)) Sets a handler to determine when a monitor is fully cancelled and will no longer deliver events. [`nw_path_monitor_cancel_handler_t`](/documentation/Network/nw_path_monitor_cancel_handler_t) A handler that indicates when a monitor has been cancelled. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)