Hi guys, I observed the infinite connection callback(inSelector) for some Bluetooth devices (such as an iPhone SE or Mac Mini) even when I powered off them. However, the issue is not reproducible easily. (IOBluetoothUserNotification *)registerForConnectNotifications:(id)observer selector:(SEL)inSelector ble.txt Looks like there are many -[CBManager xpcConnectionDidReceiveMsg:args:] calls when the issue occurs based on the sample, so it might be caused by the XPC connection with bluetoothd? Has anyone else experienced this issue, or any workaround for it? such as should I restart the bluetoothd?

Hi! I am trying to figure out whether there are any ways to get notifications when a macOS user connects to another device via Bluetooth (specifically when a smartphone is paired with a MacBook). I know about IOBluetooth, but it seems like you have to send periodic queries for devices when using this framework, and there is no general way to receive such notifications. I know that IOHIDManager may help to track connection with human interface devices such as keyboards, trackpads, joysticks, etc. But is there any API in IOKit/DriverKit that could help get notifications when a macOS user connects to a smartphone? Maybe I am missing an important part of IOBluetooth, so I would appreciate any help.

Why is BLE easily disconnected after pairing in cellular networks on iOS 17.3.1, and this situation does not occur in WLAN

Hi! I have previously developed an app that established a Bluetooth connection between two devices (two iPads). Now, I want to port the client-side app to VisionPro. Similar to the iPad app, I have supplemented my info.plist file with the following line: NSBluetoothAlwaysUsageDescription Uses BLE to communicate with devices. Despite this, when I launch the app on VisionPro, the prompt to use Bluetooth does not appear. What could be the issue? What additional settings do I need to configure to enable Bluetooth usage?

I need a Swift function to obtain the Magic Mouse battery level. I am working on an app to display the battery level in the Status Bar. I have the Status Bar code working. Functions for the Wireless keyboard and Track Pad would also be helpful.

I want my program to behave differently if a specific bluetooth headset is "connected" to the system. By "connected" I mean that it is: paired with the system appears on a list of audio output in Settings (not necessarily selected as default output) appears on "My Devices" list in Bluetooth preference pane with "Connected" status. I want this to determine "availability" of the device, i.e. likehood that establishing an active connection will succeed. Apparently IOBluetooth does not offer API to easily achieve this... I've tried: [IOBluetooth pairedDevices] to iterate though paired device list. This one correctly returns IOBluetoothDevice object representing my device. When I call [IOBluetoothDevice isConnected] it returns false even though device is listed as "connected" on My Devices list in Bluetooth settings. If I leave the headset at original place, go with my mac to a physically different location and call getLastInqiuryUpdate or recentAccessDate, both return current time, even though the headset is not in range for several days now. So I'm looking to determine the headset "connected" state the same way Bluetooth Settings pane does it and without making an active connection attempt.

My watch APP needs to keep Bluetooth connected with peripherals whether it is in the foreground or background, but the results of my test show that the connection in the background is very unstable, sometimes you can keep the Bluetooth on for a day, but sometimes it will be disconnected 50 times a day, and every time it is disconnected, I will immediately initiate a reconnection, it is certain that there is no problem with the peripheral Bluetooth, because I have another iOS device that has been stably connected to the peripheral, I want to know what causes this instability, and if there is any solution, if someone can provide relevant advice, I will be very grateful

Hi, I am developing a service that reads data from wearable devices. It should launch the scheduler every 15 min, but however sometimes there is a delay of 1 - 5 minutes, there are days that the scheduler does not run between 23:00 to 7 am, I am using BGAppRefreshTaskRequest. Can someone give me a hand?

Hi, I am inquiring in regard to how to handle data from a bluetooth device. The device would send data in JSON format to a Mac via bluetooth, and I would need to constantly refresh or fetch data from the device in real time. How would I go about this? Any help would be greatly appreciated. Thank you.

Looking to see if there's been any update with Airpods Pro having an API that developers can use to create new features on top of the earbud.

Hello everyone, I've developed an application using ElectronJS and NodeJS, utilizing the Web Bluetooth API for connecting to and streaming data from peripherals. Initially, this was built and tested on macOS Ventura, where everything worked as expected. However, I've encountered a couple of issues post the Sonoma update. Issue 1: Slower Streaming Speed Post-Sonoma Update After updating to Sonoma, the streaming speed from peripherals significantly decreased. This is perplexing because the app continues to perform well on Ventura. To troubleshoot, I even developed a version using Rust with the btleplug library, hoping for improved Bluetooth performance. However, this did not lead to any noticeable difference; both the Electron and Rust versions perform nearly the same. Has anyone experienced similar issues or knows what might be causing this slowdown? Issue 2: GATT Operation Error Resolved, but Streaming Speed Affected On Ventura, one specific command consistently failed with a GATT operation error. Interestingly, post-Sonoma update, this command works without error, but this seems to have affected the streaming speed. The improved GATT operation seems to come at the cost of decreased streaming performance. Is there a known connection between these two aspects, or has anyone observed a similar trade-off? I'm looking for insights or suggestions to resolve these issues, particularly the streaming speed degradation post-Sonoma. The application needs to maintain consistent performance across different macOS versions, and these discrepancies are quite challenging. Thank you in advance for your help and insights! Best regards,

I am developing an App that uses BLE to connect to third-party devices. Considering information security, perform a LE Secure Connection before BLE connection. But we encountered an issue: after uninstalling the App and reinstalling it, the paired device cannot be connected again. This requires to ignore this device in Settings to continue using it. But we can't do this, it's not friendly to our customers. So, I would like to ask the developers here if they know how to solve this issue. Thank you

objectC program: iOS all : iPhone ~ swift program. : iOS 13 ~ : iPhone 6s ~ swiftUI Program : iOS 13 ~ : iPhone 6s ~ bluetooth classic : ~ iPhone 4s Bluetooth Low Engery : iPhone 5 ~ are All above content right? i am making iOS app with swiftUI app, and Bluetooth Low Energy. after making app, i found that my app can run on greater than iOS13 , iPhone 6s. how many is ther number of above iPhone6s User ?

Hello, I have found an example of Bluetooth RFCOMM client for macOS on GitHub. I search now an example of Bluetooth RFCOMM server for macOS. Thanks.

Hello, I try to create a Bluetooth RFCOMM client and server on macOS, I tried using this project on GitHub but I have this message : The device does not have the necessary services. and it's impossible to connect to the device. do you know an example project that working ? Thanks

When I set the AVAudioSessionCategory avAudioSessionCategory: AVAudioSessionCategory.playAndRecord， sound to come out of the built-in speaker instead of Bluetooth headphones。ios17 。It is normal in IOS 16 or 15 final session = await AudioSession.instance; await session.configure(AudioSessionConfiguration( avAudioSessionCategory: AVAudioSessionCategory.playAndRecord, avAudioSessionCategoryOptions:AVAudioSessionCategoryOptions.allowBluetooth | AVAudioSessionCategoryOptions.allowBluetoothA2dp, avAudioSessionMode: AVAudioSessionMode.defaultMode, avAudioSessionRouteSharingPolicy: AVAudioSessionRouteSharingPolicy.defaultPolicy, avAudioSessionSetActiveOptions: AVAudioSessionSetActiveOptions.none, androidAudioAttributes: const AndroidAudioAttributes( contentType: AndroidAudioContentType.music, flags: AndroidAudioFlags.none, usage: AndroidAudioUsage.media, ), androidAudioFocusGainType: AndroidAudioFocusGainType.gain, androidWillPauseWhenDucked: true, )); How to make sound output from Bluetooth instead of speakers in IOS 17? How to make sound output from Bluetooth instead of speakers in IOS 17?

I am trying to print using CUPS and my own backend, Bluetooth, but it is failing on macOS Sonoma. The backend I built don’t have permission to perform Bluetooth communication or get a list of Paired devices. I granted permissions to /usr/libexec/cups/backend/ from System Settings -> Privacy and Security -> Bluetooth, but that did not solve the problem. When I run only the backend I created, the permission dialog appears and I can print, but when I try to print from CUPS, it does not appear and fails to print. The print queue still shows "Ready to print" and the job remains. Printing succeeds with USB and LAN, but only with Bluetooth. Printing succeeds on 13.6 and earlier, problem occurs on 14 and 14.1. Please let me know how to give permission to my backend.

Does the new iOS 17.1 not support bluetooth devices anymore? I have a set of Bose head phones that I use all day when I work. I used to be able to listen to podcasts, audiobooks and pdf's using VoiceDream. Now, the apps don't work w/ the headphones. They work when not using the headphones, but only the phone works with the headphones. is there a work around?

I am trying to read/write from/to a Bluetooth device that has SPP(Serial port profile) from Python in Mac OSX. Could you recommend any good library to do so? I have been trying for long but the solutions I have tried does not work. Any help would be greatly appreciated!

No connection notifications callback for Bluetooth devices are called on Sonoma if process is run as daemon/system, works on Ventura. Seems to be some changes in TCC that now requires kTCCServiceBluetoothAlways in system TCC.db - but how to grant this? Other calls on IOBluetoothDevice fails probably for the same reason. Running as launch agent works as expected on both Sonoma and Ventura. Code used os_log_t logHandle = 0; @interface BluetoothConnection : NSObject { } @end @implementation BluetoothConnection -(id)init { self = [super init]; if (self) { IOBluetoothUserNotification* notification = [IOBluetoothDevice registerForConnectNotifications:self selector:@selector(deviceIsConnected:fromDevice:)]; if (notification == nil) { os_log_debug(logHandle, "registerForConnectNotifications failed"); } else { os_log_debug(logHandle, "registerForConnectNotifications %{public}@", notification); } } return self; } -(void)deviceDidDisconnect:(IOBluetoothUserNotification*)notification fromDevice:(IOBluetoothDevice*)device { os_log_debug(logHandle, "%{public}@ (%{public}@) disconnected", [device name], [device addressString]); } -(void)deviceIsConnected:(IOBluetoothUserNotification*)notification fromDevice:(IOBluetoothDevice*)device { os_log_debug(logHandle, "%{public}@ (%{public}@) connected (%d, %d)", [device name], [device addressString], device.deviceClassMajor, device.deviceClassMinor); [device registerForDisconnectNotification:self selector:@selector(deviceDidDisconnect:fromDevice:)]; } @end int main(int argc, const char * argv[]) { @autoreleasepool { logHandle = os_log_create("SPX”, “BT”); BluetoothConnection *bluetoothConnection = [[BluetoothConnection alloc] init]; [[NSRunLoop currentRunLoop] run]; } return 0; }