	US 12,021,724 B2
	Identifying reachability of network-connected devices
Keith W. Rauenbuehler, San Francisco, CA (US); Nicholas J. Circosta, Mountain View, CA (US); Kenneth A. York, San Jose, CA (US); Christopher Ku, San Jose, CA (US); Adam J. Moore, San Francisco, CA (US); Jose A. Lozano Hinojosa, Sunnyvale, CA (US); Aniket A. Zamwar, Sunnyvale, CA (US); and Patrick L. Coffman, San Francisco, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Apr. 8, 2022, as Appl. No. 17/716,332.
Application 17/716,332 is a continuation of application No. 17/032,619, filed on Sep. 25, 2020, granted, now 11,356,352.
Claims priority of provisional application 63/034,110, filed on Jun. 3, 2020.
Prior Publication US 2022/0263741 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 43/10 (2022.01); H04L 12/28 (2006.01); H04L 41/22 (2022.01); H04L 43/0811 (2022.01)

CPC H04L 43/10 (2013.01) [H04L 12/2854 (2013.01); H04L 41/22 (2013.01); H04L 43/0811 (2013.01)]

20 Claims

1. A method, comprising:

receiving, by a controller device on a local area network, a list of user devices configured to be informed if an accessory device becomes unreachable by the controller device over the local area network;

transmitting, by the controller device, a ping message to the accessory device over the local area network;

determining, by the controller device, whether the accessory device is unreachable based at least in part on the ping message and reachability information that identifies that the accessory device was unreachable by at least one user device connected to the local area network; and

transmitting, by the controller device, a notification to each of the user devices on the list of user devices in accordance with a determination that the accessory device is unreachable over the local area network.