After setting service/characteristics and do serviceProvider.StartAdvertising(), then ble client connect the server. How can server do disconnect to a client ? I did't find any api in Docs. In a word, what I want is the method for server to: disconnect a connection from a single client, the service is still available and can be connected, and other client's connection is still work. disconnect all client connection, and the service is not avaliable. (seems serviceProvider.StopAdvertising() useful, but after I tried, the client did not get disconnect event?) Thanks.

Hello, Welcome to Microsoft Q&A! Is there a way to disconnect a ble connection from server? There is no explicit API to disconnect a client. Closing all references to it would help if the system is in central role (i.e. initiated the connection). If the system is in peripheral role (client side initiated) then the disconnect needs to be initiated by the client side. Thank you. If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Is there a way to disconnect a ble connection from server?

frank zhang 121

After setting service/characteristics and do serviceProvider.StartAdvertising(), then ble client connect the server. How can server do disconnect to a client ? I did't find any api in Docs.

In a word, what I want is the method for server to:

disconnect a connection from a single client, the service is still available and can be connected, and other client's connection is still work.
disconnect all client connection, and the service is not avaliable. (seems serviceProvider.StopAdvertising() useful, but after I tried, the client did not get disconnect event?)
Thanks.

Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,866 Reputation points

2022-05-23T08:08:24.267+00:00

Please check Dispose property for GattSession class, you could try to call it to dispose current connection.
frank zhang 121 Reputation points

2022-05-23T09:10:03.837+00:00

I know Dispose is the method in GattSession in Docs, but it seems not in SDK ? When I use it in program , it can not even build successfully, is there something wrong?

demo code:
// the session is from notifyChangedHandler of SubscribedClients
void BLEServer::notifyChangedHandler(Bluetooth::GenericAttributeProfile::GattLocalCharacteristic characteristic, Windows::Foundation::IInspectable args) {
...
auto session = characteristic.SubscribedClients().GetAt(0).Session();
Session.Dispose(); // build error with below log
....
}

error build log :

1>------ Build started: Project: commonble, Configuration: Debug Win32 ------
1>BLEServer.cpp
1>C:\Users\Admin\proj\WinCommonBle\CommonBle\BLEServer.cpp(199,43): error C2039: 'Dispose': is not a member of 'winrt::Windows::Devices::Bluetooth::GenericAttributeProfile::GattSession'
1>C:\Program Files (x86)\Windows Kits\10\Include\10.0.22000.0\cppwinrt\winrt\impl\Windows.Devices.Bluetooth.GenericAttributeProfile.2.h(337): message : see declaration of 'winrt::Windows::Devices::Bluetooth::GenericAttributeProfile::GattSession'
1>Done building project "CommonBle.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,866 Reputation points

2022-05-24T01:08:39.68+00:00

For cpp, pleas use close method to repace.
frank zhang 121 Reputation points

2022-05-24T03:05:46.157+00:00

Thanks @Nico Zhu (Shanghai Wicresoft Co,.Ltd.) :
I have already tried "close" method before, but it is useless.
After server do "close", client did not get any disconnect event, and client still can do "write characteristic" and can be received by server. What's different is that server can not do "notify" to client anymore. So I do not think "close" method is the way to disconnect to a server.
Is there more api to do that kind of disconnect?
Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,866 Reputation points

2022-05-25T01:25:29.037+00:00

Ok，I will discuss with releated team to check if there is abaiable api to disconnect the connection from server side.
Mike Petrichenko 0 Reputation points

2025-01-30T03:49:13.0633333+00:00

Actually yes, there is a way. I use this method in my Bluetooth Framework library.

Accepted answer

Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,866 Reputation points

2022-05-25T02:05:02.673+00:00

Hello,
Welcome to Microsoft Q&A!

Is there a way to disconnect a ble connection from server?

There is no explicit API to disconnect a client. Closing all references to it would help if the system is in central role (i.e. initiated the connection). If the system is in peripheral role (client side initiated) then the disconnect needs to be initiated by the client side.

Thank you.

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Please sign in to rate this answer.
frank zhang 121 Reputation points

2022-05-25T03:39:48.967+00:00

Thank you for your support.@Nico Zhu (Shanghai Wicresoft Co,.Ltd.)
Android platform have such kind of APi ,hope windows also have this kind of api.

Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,866 Reputation points

2022-05-25T04:39:54.813+00:00

I'd suggest you submit a feedback/feature request about this API/feature in the Feedback Hub. You could find the Feedback Hub in the Start Menu. Please select Developer Platform->API Feedback as the category when you submit your request. The related team will check the request.
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