How to know which WiFi adapter will be used with a "WiFiDirectAdvertisementPublisher" when multiple WiFi adapters are available

AW-8090 0

I am using the WiFiDirectAdvertisementPublisher to provide a hotspot functionality that prevents internet access, if 2 WiFi adapters are connected how can I tell/define which one will/should be used?

This is the API I am referring to;

https://learn.microsoft.com/en-us/uwp/api/windows.devices.wifidirect.wifidirectadvertisementpublisher

Roy Li - MSFT 32,051 Reputation points Microsoft Vendor

2024-03-25T02:38:40.9233333+00:00

Could you please tell me why you want to know which devices will be used for publishing?
AW-8090 0 Reputation points

2024-03-25T10:19:04.3133333+00:00

I work on SW that aside from the WiFiDirectAdvertisementPublisher has the need to support multiple WiFi adapters, one adapter is utilized for internet and network communication and another for dedicated communication with a device that transfers a large amount of data. Both adapters communicate via standard WiFi i.e. not WiFi direct. From a resource utilization and performance perspective it would be good to know which of the 2 adapters will be used by the WiFiDirectAdvertisementPublisher and also how and if this can be influenced programmatically.
Roy Li - MSFT 32,051 Reputation points Microsoft Vendor

2024-03-27T08:27:40.8633333+00:00

Currently, there is no public document for Wi-Fi direct that could tell this. For your scenario, I suggest that you might need to open a support ticket for this. Please contact our paid support at MS Support. You will get 1:1 support on that. Select Developer Tools -> Windows UWP Development -> Windows 10 Universal App Dev -> Devices and Sensors Development in the support page and you could contact the team. Please kindly note that your support ticket will be free if it is Microsoft's issue.