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Background App Refresh
Hi, I have a couple questions about background app refresh. First, is the function RefreshAppContentsOperation() where to implement code that needs to be run in the background? Second, despite importing BackgroundTasks, I am getting the error "cannot find operationQueue in scope". What can I do to resolve that? Thank you. func scheduleAppRefresh() { let request = BGAppRefreshTaskRequest(identifier: "peaceofmindmentalhealth.RoutineRefresh") // Fetch no earlier than 15 minutes from now. request.earliestBeginDate = Date(timeIntervalSinceNow: 15 * 60) do { try BGTaskScheduler.shared.submit(request) } catch { print("Could not schedule app refresh: \(error)") } } func handleAppRefresh(task: BGAppRefreshTask) { // Schedule a new refresh task. scheduleAppRefresh() // Create an operation that performs the main part of the background task. let operation = RefreshAppContentsOperation() // Provide the background task with an expiration handler that cancels the operation. task.expirationHandler = { operation.cancel() } // Inform the system that the background task is complete // when the operation completes. operation.completionBlock = { task.setTaskCompleted(success: !operation.isCancelled) } // Start the operation. operationQueue.addOperation(operation) } func RefreshAppContentsOperation() -> Operation { }
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Jan ’26
Tokens change without reason after updating to iOS 17.5.1
Some of our users encounter an issue after updating their iPhone/iPad to iOS 17.5.1. The tokens passed in the Shield Configuration extension don't match the tokens they selected in my app using the FamilyPicker before updating to iOS 17.5.1. It seems the tokens changed for no reason. My app can't match the token from the ShieldConfigurationDataSource to any tokens stored on my end, causing my shield screens to turn blank. The same applies to tokens in the Device Activity Report extension. The only workaround I've found is to tell affected users to unselect and reselect apps and websites to block in my app. This gets them new tokens from the FamilyActivityPicker, which solves the issue. However, for some users, the bug reoccurs a few days later. Tokens seem to change again, causing the same issue in the Shield Configuration extension. I am not able to reproduce the issue on my test devices so I have no sysdiagnose to attach. However, this issue is affecting other screen time apps: https://developer.apple.com/forums/thread/732845 https://forums.developer.apple.com/forums/thread/756440 FB14082790 FB14111223 A change in iOS 17.5.1 must have triggered this behaviour. Could an Apple engineer give us any updates on this?
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3.1k
Aug ’25
iCloud Sync not working with iPhone, works fine for Mac.
I've been working on an app. It uses iCloud syncing. 48 hours ago everything was working 100%. Make a change on the iPhone it immediately changed on the Mac. Change on the Mac, it immediately changed on the iPhone. I didn't work on it yesterday. I updated to iOS26.4 on the iPhone and 26.4 on the Mac yesterday instead. Today, I pull up the project again. I made NO changes to the code or settings. Make a change on the iPhone it immediately updates on the Mac. Make a change on the Mac, nothing happens on the iPhone. I've waited an hour, and the change never happens. If you leave the iPhone app, then return, it updates as it should. It appears that iCloud's silent notification is to being received by the iPhone. Anyone else having the issue? Is there something new with iOS 26.4 that needs to be adjusted to get this to work? Again, works flawlessly with the Mac, just not with the iPhone.
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4.4k
5h
NSPersistentCloudkitContainer Memory Leak -> Crash? (iOS 15 beta 4 & 5)
Background I have an established app in the App Store which has been using NSPersistentCloudkitContainer since iOS 13 without any issues. I've been running my app normally on an iOS device running the iOS 15 betas, mainly to see problems arise before my users see them. Ever since iOS 15 (beta 4) my app has failed to sync changes - no matter how small the change. An upload 'starts' but never completes. After a minute or so the app quits to the Home Screen and no useful information can be gleaned from crash reports. Until now I've had no idea what's going on. Possible Bug in the API? I've managed to replicate this behaviour on the simulator and on another device when building my app with Xcode 13 (beta 5) on iOS 15 (beta 5). It appears that NSPersistentCloudkitContainer has a memory leak and keeps ramping up the RAM consumption (and CPU at 100%) until the operating system kills the app. No code of mine is running. I'm not really an expert on these things and I tried to use Instruments to see if that would show me anything. It appears to be related to NSCloudkitMirroringDelegate getting 'stuck' somehow but I have no idea what to do with this information. My Core Data database is not tiny, but not massive by any means and NSPersistentCloudkitContainer has had no problems syncing to iCloud prior to iOS 15 (beta 4). If I restore my App Data (from an external backup file - 700MB with lots of many-many, many-one relationships, ckAssets, etc.) the data all gets added to Core Data without an issue at all. The console log (see below) then shows that a sync is created, scheduled & then started... but no data is uploaded. At this point the memory consumption starts and all I see is 'backgroundTask' warnings appear (only related to CloudKit) with no code of mine running. CoreData: CloudKit: CoreData+CloudKit: -[PFCloudKitExporter analyzeHistoryInStore:withManagedObjectContext:error:](501): <PFCloudKitExporter: 0x600000301450>: Exporting changes since (0): <NSPersistentHistoryToken - { "4B90A437-3D96-4AC9-A27A-E0F633CE5D9D" = 906; }> CoreData: CloudKit: CoreData+CloudKit: -[PFCloudKitExportContext processAnalyzedHistoryInStore:inManagedObjectContext:error:]_block_invoke_3(251): Finished processing analyzed history with 29501 metadata objects to create, 0 deleted rows without metadata. CoreData: CloudKit: CoreData+CloudKit: -[NSCloudKitMirroringDelegate _scheduleAutomatedExportWithLabel:activity:completionHandler:](2800): <NSCloudKitMirroringDelegate: 0x6000015515c0> - Beginning automated export - ExportActivity: <CKSchedulerActivity: 0x60000032c500; containerID=<CKContainerID: 0x600002ed3240; containerIdentifier=iCloud.com.nitramluap.Somnus, containerEnvironment="Sandbox">, identifier=com.apple.coredata.cloudkit.activity.export.4B90A437-3D96-4AC9-A27A-E0F633CE5D9D, priority=2, xpcActivityCriteriaOverrides={ Priority=Utility }> CoreData: CloudKit: CoreData+CloudKit: -[NSCloudKitMirroringDelegate executeMirroringRequest:error:](765): <NSCloudKitMirroringDelegate: 0x6000015515c0>: Asked to execute request: <NSCloudKitMirroringExportRequest: 0x600002ed2a30> CBE1852D-7793-46B6-8314-A681D2038B38 2021-08-13 08:41:01.518422+1000 Somnus[11058:671570] [BackgroundTask] Background Task 68 ("CoreData: CloudKit Export"), was created over 30 seconds ago. In applications running in the background, this creates a risk of termination. Remember to call UIApplication.endBackgroundTask(_:) for your task in a timely manner to avoid this. 2021-08-13 08:41:03.519455+1000 Somnus[11058:671570] [BackgroundTask] Background Task 154 ("CoreData: CloudKit Scheduling"), was created over 30 seconds ago. In applications running in the background, this creates a risk of termination. Remember to call UIApplication.endBackgroundTask(_:) for your task in a timely manner to avoid this. Just wondering if anyone else is having a similar issue? It never had a problem syncing an initial database restore prior to iOS 15 (beta 4) and the problems started right after installing iOS 15 (beta 4). I've submitted this to Apple Feedback and am awaiting a response (FB9412346). If this is unfixable I'm in real trouble (and my users are going to be livid). Thanks in advance!
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13k
Jun ’25
Call Blocking (CallKit) not working on iOS 26 Public Beta
Call blocking using a third-party CallKit app is not longer working with the latest iOS 26 Public Beta (23A5297m). We've tried several different Call Blocking apps (that used to work fine on iOS 18.5) and their call blocking functionality is not working anymore. All calls pass through and the phone rings on those "blocked" numbers. We got several user complaints about our app that is not working on iOS 26 Public Beta. We've filed 2 bug reports with Feedback Assistant: FB19140680 FB19140594 Please fix this issue in the next Beta versions of iOS 26 to have a stable iOS 26 release in the future. Thank you in advance.
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1.1k
Aug ’25
Zsh kills Python process with plenty of available VM
On a MacBook Pro, 16GB of RAM, 500 GB SSD, OS Sequoia 15.7.1, M3 chip, I am running some python3 code in a conda environment that requires lots of RAM and sure enough, once physical memory is almost exhausted, swapfiles of about 1GB each start being created, which I can see in /System/Volumes/VM. This folder has about 470 GB of available space at the start of the process (I can see this through get info) however, once about 40 or so swapfiles are created, for a total of about 40GB of virtual memory occupied (and thus still plenty of available space in VM), zsh kills the python process responsible for the RAM usage (notably, it does not kill another python process using only about 100 MB of RAM). The message received is "zsh: killed" in the tmux pane where the logging of the process is printed. All the documentation I was able to consult says that macOS is designed to use up to all available storage on the startup disk (which is the one I am using since I have only one disk and the available space aforementioned reflects this) for swapping, when physical RAM is not enough. Then why is the process killed long before the swapping area is exhausted? In contrast, the same process on a Linux machine (basic python venv here) just keeps swapping, and never gets killed until swap area is exhausted. One last note, I do not have administrator rights on this device, so I could not run dmesg to retrieve more precise information, I can only check with df -h how the swap area increases little by little. My employer's IT team confirmed that they do not mess with memory usage on managed profiles, so macOS is just doing its thing. Thanks for any insight you can share on this issue, is it a known bug (perhaps with conda/python environments) or is it expected behaviour? Is there a way to keep the process from being killed?
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787
Feb ’26
Importing Data into SwiftData in the Background Using ModelActor and @Query
I have an app with fairly typical requirements - I need to insert some data (in my case from the network but could be anything) and I want to do it in the background to keep the UI responsive. I'm using SwiftData. I've created a ModelActor that does the importing and using the debugger I can confirm that the data is indeed being inserted. On the UI side, I'm using @Query and a SwiftUI List to display the data but what I am seeing is that @Query is not updating as the data is being inserted. I have to quit and re-launch the app in order for the data to appear, almost like the context running the UI isn't communicating with the context in the ModelActor. I've included a barebones sample project. To reproduce the issue, tap the 'Background Insert' button. You'll see logs that show items being inserted but the UI is not showing any data. I've tested on the just released iOS 18b3 seed (22A5307f). The sample project is here: https://hanchor.s3.amazonaws.com/misc/SwiftDataBackgroundV2.zip
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6.3k
Feb ’26
Content Filter Permission Prompt Not Appearing in TestFlight
I added a Content Filter to my app, and when running it in Xcode (Debug/Release), I get the expected permission prompt: "Would like to filter network content (Allow / Don't Allow)". However, when I install the app via TestFlight, this prompt doesn’t appear at all, and the feature doesn’t work. Is there a special configuration required for TestFlight? Has anyone encountered this issue before? Thanks!
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1.1k
1w
APNs Auth Key download error after revoking old key — “already downloaded” for new key
I created an APNs Auth Key in the Apple Developer portal and downloaded it successfully once. Later, due to some issues, I revoked that key. After that, I created a new APNs Auth Key. The download button appears, but when I click it, I get the message: "Auth Key can only be downloaded once. This auth key has already been downloaded." This is incorrect because: The key is newly created in my account. I have tried multiple browsers (Safari, Chrome), private/incognito mode, and even a different laptop. I have no other active APNs Auth Keys in my account. Without this .p8 file, I cannot configure push notifications for my iOS app (using Firebase Cloud Messaging). This is blocking my production release. Has anyone else experienced this? Is there a way to reset or force a fresh APNs Auth Key when this happens?
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1.5k
Sep ’25
DNS Proxy Provider remains active after app uninstall | iOS
Hi, I've encountered a strange behavior in the DNS Proxy Provider extension. Our app implements both DNS Proxy Provider and Content Filter Providers extensions, configured via MDM. When the app is uninstalled, the behavior of the providers differs: For Content Filter Providers (both Filter Control and Filter Data Providers), the providers stop as expected with the stop reason: /** @const NEProviderStopReasonProviderDisabled The provider was disabled. */ case providerDisabled = 5 However, for the DNS Proxy Provider, the provider remains in the "Running" state, even though there is no app available to match the provider's bundle ID in the uploaded configuration profile. When the app is reinstalled: The Content Filter Providers start as expected. The DNS Proxy Provider stops with the stop reason: /** @const NEProviderStopReasonAppUpdate The NEProvider is being updated */ @available(iOS 13.0, *) case appUpdate = 16 At this point, the DNS Proxy Provider remains in an 'Invalid' state. Reinstalling the app a second time seems to resolve the issue, with both the DNS Proxy Provider and Content Filter Providers starting as expected. This issue seems to occur only if some time has passed after the DNS Proxy Provider entered the 'Running' state. It appears as though the system retains a stale configuration for the DNS Proxy Provider, even after the app has been removed. Steps to reproduce: Install the app and configure both DNS Proxy Provider and Content Filter Providers using MDM. Uninstall the app. Content Filter Providers are stopped as expected (NEProviderStopReason.providerDisabled = 5). DNS Proxy Provider remains in the 'Running' state. Reinstall the app. Content Filter Providers start as expected. DNS Proxy Provider stops with NEProviderStopReason.appUpdate (16) and remains 'Invalid'. Reinstall the app again. DNS Proxy Provider now starts as expected. This behavior raises concerns about how the system manages the lifecycle of DNS Proxy Provider, because DNS Proxy Provider is matched with provider bundle id in .mobileconfig file. Has anyone else experienced this issue? Any suggestions on how to address or debug this behavior would be highly appreciated. Thank you!
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875
Oct ’25
Cancel subscription not working in TestFlight
Hi, I have deployed my app on Test Flight, I have two subscriptions, monthly and yearly. User can have one of them at a time and upgrade, downgrade to the other. Upgrade, downgrade, cancel from the Apple Settings worked fine in the sandbox environment when testing locally. Now when I have deployed the app on TestFlight, I was able to purchase the subscription successfully from my app. Now when I want to cancel my subscription from the Apple Settings it gives me the following error after confirming cancellation, 'Your request is temporarily unable to be processed. Please try again later.' Also the other subscription offer (yearly) is also not shown to which I could upgrade, even though in the sandbox I was able to upgrade downgrade from the settings. Another thing I have noticed is that the app Icon or name is not shown anywhere in settings with the subscription. Instead of app icon only empty square is shown. Even though app icon shows fine everywhere else. Can someone please help me figure out this issue?
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15
4.5k
Oct ’25
iOS 26.2 RC DeviceActivityMonitor.eventDidReachThreshold regression?
Hi there, Starting with iOS 26.2 RC, all my DeviceActivityMonitor.eventDidReachThreshold get activated immediately as I pick up my iPhone for the first time, two nights in a row. Feedback: FB21267341 There's always a chance something odd is happening to my device in particular (although I can't recall making any changes here and the debug logs point to the issue), but just getting this out there ASAP in case others are seeing this (or haven't tried!), and it's critical as this is the RC. DeviceActivityMonitor.eventDidReachThreshold issues also mentioned here: https://developer.apple.com/forums/thread/793747; but I believe they are different and were potentially fixed in iOS 26.1, but it points to this part of the technology having issues and maybe someone from Apple has been tweaking it.
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2.7k
2d
Billing Problem while subscription renewal.
Hello, I'm currently experiencing issues with IAP subscription setup. The following error appears: "Billing Problem, There was a problem with your subscription renewal. To resolve, turn on Allow Purchases & Renewals, or leave off to test failed in-app purchase attempts and subscription renewals." I'm testing with a sandbox account, and automatic subscription renewal is turned on in the sandbox settings. A notification screen appears at the OS level, and consequently, a DID_FAIL_TO_RENEW error occurs on our payment server. I cannot determine the cause at all, so I would appreciate your assistance in checking this issue.
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1.6k
Jan ’26
filecopy fails with errno 34 "Result too large" when copying from NAS
A user of my app reported that when my app copies files from a QNAP NAS to a folder on their Mac, they get the error "Result too large". When copying the same files from the Desktop, it works. I asked them to reproduce the issue with the sample code below and they confirmed that it reproduces. They contacted QNAP for support who in turn contacted me saying that they are not sure they can do anything about it, and asking if Apple can help. Both the app user and QNAP are willing to help, but at this point I'm also unsure how to proceed. Can someone at Apple say anything about this? Is this something QNAP should solve, or is this a bug in macOS? P.S.: I've had users in the past who reported the same issue with other brands, mostly Synology. import Cocoa @main class AppDelegate: NSObject, NSApplicationDelegate { func applicationDidFinishLaunching(_ aNotification: Notification) { let openPanel = NSOpenPanel() openPanel.canChooseDirectories = true openPanel.runModal() let source = openPanel.urls[0] openPanel.canChooseFiles = false openPanel.runModal() let destination = openPanel.urls[0] do { try copyFile(from: source, to: destination.appendingPathComponent(source.lastPathComponent, isDirectory: false)) } catch { NSAlert(error: error).runModal() } NSApp.terminate(nil) } private func copyFile(from source: URL, to destination: URL) throws { if try source.resourceValues(forKeys: [.isDirectoryKey]).isDirectory == true { try FileManager.default.createDirectory(at: destination, withIntermediateDirectories: false) for source in try FileManager.default.contentsOfDirectory(at: source, includingPropertiesForKeys: nil) { try copyFile(from: source, to: destination.appendingPathComponent(source.lastPathComponent, isDirectory: false)) } } else { try copyRegularFile(from: source, to: destination) } } private func copyRegularFile(from source: URL, to destination: URL) throws { let state = copyfile_state_alloc() defer { copyfile_state_free(state) } var bsize = UInt32(16_777_216) if copyfile_state_set(state, UInt32(COPYFILE_STATE_BSIZE), &bsize) != 0 { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } else if copyfile_state_set(state, UInt32(COPYFILE_STATE_STATUS_CB), unsafeBitCast(copyfileCallback, to: UnsafeRawPointer.self)) != 0 { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } else if copyfile(source.path, destination.path, state, copyfile_flags_t(COPYFILE_DATA | COPYFILE_SECURITY | COPYFILE_NOFOLLOW | COPYFILE_EXCL | COPYFILE_XATTR)) != 0 { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } } private let copyfileCallback: copyfile_callback_t = { what, stage, state, src, dst, ctx in if what == COPYFILE_COPY_DATA { if stage == COPYFILE_ERR { return COPYFILE_QUIT } } return COPYFILE_CONTINUE } }
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5d
Is calling different SBApplication objects from different threads bad?
Not quite but maybe sorta related to the errOSAInternalTableOverflow problem I asked about in a different thread, this one deals with crashes our app gets (and much more frequently lately after recent OS updates (15.7.3) are OK'd by our IT department). Our app can run multiple jobs concurrently, each in their own NSOperation. Each op creates its own SBApplication instance that controls unique instances of InDesignServer. What I'm seeing recently is lots of crashes happening while multiple ops are calling into ScriptingBridge. Shown at the bottom is one of the stack crawls from one of the threads. I've trimmed all but the last of our code. Other threads have a similar stack crawl. In searching for answers, Google's AI overview mentions "If you must use multiple threads, ensure that each thread creates its own SBApplication instance…" Which is what we do. No thread can reach another thread's SBApplication instance. Is that statement a lie? Do I need to lock around every ScriptingBridge call (which is going to severely slow things down)? 0 AE 0x1a7dba8d4 0x1a7d80000 + 239828 1 AE 0x1a7d826d8 AEProcessMessage + 3496 2 AE 0x1a7d8f210 0x1a7d80000 + 61968 3 AE 0x1a7d91978 0x1a7d80000 + 72056 4 AE 0x1a7d91764 0x1a7d80000 + 71524 5 CoreFoundation 0x1a0396a64 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 6 CoreFoundation 0x1a03969f8 __CFRunLoopDoSource0 + 172 7 CoreFoundation 0x1a0396764 __CFRunLoopDoSources0 + 232 8 CoreFoundation 0x1a03953b8 __CFRunLoopRun + 840 9 CoreFoundation 0x1a03949e8 CFRunLoopRunSpecific + 572 10 AE 0x1a7dbc108 0x1a7d80000 + 246024 11 AE 0x1a7d988fc AESendMessage + 4724 12 ScriptingBridge 0x1ecb652ac -[SBAppContext sendEvent:error:] + 80 13 ScriptingBridge 0x1ecb5eb4c -[SBObject sendEvent:id:keys:values:count:] + 216 14 ScriptingBridge 0x1ecb6890c -[SBCommandThunk invoke:] + 376 15 CoreFoundation 0x1a037594c ___forwarding___ + 956 16 CoreFoundation 0x1a03754d0 _CF_forwarding_prep_0 + 96 17 RRD 0x1027fca18 -[AppleScriptHelper runAppleScript:withSubstitutionValues:usingSBApp:] + 1036
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498
2w
System Panic with IOUserSCSIParallelInterfaceController during Dispatch Queue Configuration
Hello everyone, We are in the process of migrating a high-performance storage KEXT to DriverKit. During our initial validation phase, we noticed a performance gap between the DEXT and the KEXT, which prompted us to try and optimize our I/O handling process. Background and Motivation: Our test hardware is a RAID 0 array of two HDDs. According to AJA System Test, our legacy KEXT achieves a write speed of about 645 MB/s on this hardware, whereas the new DEXT reaches about 565 MB/s. We suspect the primary reason for this performance gap might be that the DEXT, by default, uses a serial work-loop to submit I/O commands, which fails to fully leverage the parallelism of the hardware array. Therefore, to eliminate this bottleneck and improve performance, we configured a dedicated parallel dispatch queue (MyParallelIOQueue) for the UserProcessParallelTask method. However, during our implementation attempt, we encountered a critical issue that caused a system-wide crash. The Operation Causing the Panic: We configured MyParallelIOQueue using the following combination of methods: In the .iig file: We appended the QUEUENAME(MyParallelIOQueue) macro after the override keyword of the UserProcessParallelTask method declaration. In the .cpp file: We manually created a queue with the same name by calling the IODispatchQueue::Create() function within our UserInitializeController method. The Result: This results in a macOS kernel panic during the DEXT loading process, forcing the user to perform a hard reboot. After the reboot, checking with the systemextensionsctl list command reveals the DEXT's status as [activated waiting for user], which indicates that it encountered an unrecoverable, fatal error during its initialization. Key Code Snippets to Reproduce the Panic: In .iig file - this was our exact implementation: class DRV_MAIN_CLASS_NAME: public IOUserSCSIParallelInterfaceController { public: virtual kern_return_t UserProcessParallelTask(...) override QUEUENAME(MyParallelIOQueue); }; In .h file: struct DRV_MAIN_CLASS_NAME_IVars { // ... IODispatchQueue* MyParallelIOQueue; }; In UserInitializeController implementation: kern_return_t IMPL(DRV_MAIN_CLASS_NAME, UserInitializeController) { // ... // We also included code to manually create the queue. kern_return_t ret = IODispatchQueue::Create("MyParallelIOQueue", kIODispatchQueueReentrant, 0, &ivars->MyParallelIOQueue); if (ret != kIOReturnSuccess) { // ... error handling ... } // ... return kIOReturnSuccess; } Our Question: What is the officially recommended and most stable method for configuring UserProcessParallelTask_Impl() to use a parallel I/O queue? Clarifying this is crucial for all developers pursuing high-performance storage solutions with DriverKit. Any explanation or guidance would be greatly appreciated. Best Regards, Charles
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895
Feb ’26
Wi-Fi Aware between iOS 26 and Android device
Eager to see the Wi-Fi Aware communication between iPhone (iOS 26) and an Android device, I tried iOS 26 beta on my iPhone16. and tried below code snippet from provided example at https://developer.apple.com/documentation/wifiaware/building-peer-to-peer-apps. Idea is to first verify discovery of Android WiFiAware service on iOS. extension WAPublishableService { public static var simulationService: WAPublishableService { allServices[simulationServiceName]! } } extension WASubscribableService { public static var simulationService: WASubscribableService { allServices[simulationServiceName]! } } struct ContentView: View { @State private var showingDevicePicker = false @State private var pairedDevices: [WAPairedDevice] = [] // To hold discovered/paired devices var body: some View { VStack { Button("Discover Devices") { showingDevicePicker = true // Trigger the device picker presentation } .sheet(isPresented: $showingDevicePicker) { DevicePicker(.wifiAware(.connecting(to: .selected([]), from: .simulationService))) { endpoint in print("Paired Endpoint: \(endpoint)") } label: { Image(systemName: "plus") Text("Add Device") } fallback: { Image(systemName: "xmark.circle") Text("Unavailable") } } List(pairedDevices) { device in Text(device.name ?? "Unknown Device") } } } } With suggested entitlement of WiFiAware and info.plist of service info. Then I had Android device with WIFiAware service publishing service (service name set '_sat-simulation._udp') from this app https://github.com/anagramrice/NAN. But above iOS app is unable to find the service published from android device. Am I missing something? Note: the above Android-NAN app seems to be working fine between Android to Another Android.
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2
1.8k
Sep ’25
NWBrowser with bonjour returning PolicyDenied(-65570)
Hi, Having an issue on one mac using Xcode 16.3 and simulator 18.4. macSO 15.4 We are checking for bonjour: authorizationBrowser = NWBrowser(for: .bonjour(type: "_bonjour._tcp", domain: nil), using: parameters) authorizationBrowser?.stateUpdateHandler = { [weak self] newState in switch newState { ... } } However at the command line we get the error: nw_browser_fail_on_dns_error_locked [B1] nw_browser_dns_service_browse_callback failed: PolicyDenied(-65570) Any idea why this is happening? or what this error means? Thanks Antz
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5.7k
Jun ’25
Background App Refresh
Hi, I have a couple questions about background app refresh. First, is the function RefreshAppContentsOperation() where to implement code that needs to be run in the background? Second, despite importing BackgroundTasks, I am getting the error "cannot find operationQueue in scope". What can I do to resolve that? Thank you. func scheduleAppRefresh() { let request = BGAppRefreshTaskRequest(identifier: "peaceofmindmentalhealth.RoutineRefresh") // Fetch no earlier than 15 minutes from now. request.earliestBeginDate = Date(timeIntervalSinceNow: 15 * 60) do { try BGTaskScheduler.shared.submit(request) } catch { print("Could not schedule app refresh: \(error)") } } func handleAppRefresh(task: BGAppRefreshTask) { // Schedule a new refresh task. scheduleAppRefresh() // Create an operation that performs the main part of the background task. let operation = RefreshAppContentsOperation() // Provide the background task with an expiration handler that cancels the operation. task.expirationHandler = { operation.cancel() } // Inform the system that the background task is complete // when the operation completes. operation.completionBlock = { task.setTaskCompleted(success: !operation.isCancelled) } // Start the operation. operationQueue.addOperation(operation) } func RefreshAppContentsOperation() -> Operation { }
Replies
27
Boosts
0
Views
854
Activity
Jan ’26
Tokens change without reason after updating to iOS 17.5.1
Some of our users encounter an issue after updating their iPhone/iPad to iOS 17.5.1. The tokens passed in the Shield Configuration extension don't match the tokens they selected in my app using the FamilyPicker before updating to iOS 17.5.1. It seems the tokens changed for no reason. My app can't match the token from the ShieldConfigurationDataSource to any tokens stored on my end, causing my shield screens to turn blank. The same applies to tokens in the Device Activity Report extension. The only workaround I've found is to tell affected users to unselect and reselect apps and websites to block in my app. This gets them new tokens from the FamilyActivityPicker, which solves the issue. However, for some users, the bug reoccurs a few days later. Tokens seem to change again, causing the same issue in the Shield Configuration extension. I am not able to reproduce the issue on my test devices so I have no sysdiagnose to attach. However, this issue is affecting other screen time apps: https://developer.apple.com/forums/thread/732845 https://forums.developer.apple.com/forums/thread/756440 FB14082790 FB14111223 A change in iOS 17.5.1 must have triggered this behaviour. Could an Apple engineer give us any updates on this?
Replies
27
Boosts
7
Views
3.1k
Activity
Aug ’25
iCloud Sync not working with iPhone, works fine for Mac.
I've been working on an app. It uses iCloud syncing. 48 hours ago everything was working 100%. Make a change on the iPhone it immediately changed on the Mac. Change on the Mac, it immediately changed on the iPhone. I didn't work on it yesterday. I updated to iOS26.4 on the iPhone and 26.4 on the Mac yesterday instead. Today, I pull up the project again. I made NO changes to the code or settings. Make a change on the iPhone it immediately updates on the Mac. Make a change on the Mac, nothing happens on the iPhone. I've waited an hour, and the change never happens. If you leave the iPhone app, then return, it updates as it should. It appears that iCloud's silent notification is to being received by the iPhone. Anyone else having the issue? Is there something new with iOS 26.4 that needs to be adjusted to get this to work? Again, works flawlessly with the Mac, just not with the iPhone.
Replies
26
Boosts
12
Views
4.4k
Activity
5h
NSPersistentCloudkitContainer Memory Leak -> Crash? (iOS 15 beta 4 & 5)
Background I have an established app in the App Store which has been using NSPersistentCloudkitContainer since iOS 13 without any issues. I've been running my app normally on an iOS device running the iOS 15 betas, mainly to see problems arise before my users see them. Ever since iOS 15 (beta 4) my app has failed to sync changes - no matter how small the change. An upload 'starts' but never completes. After a minute or so the app quits to the Home Screen and no useful information can be gleaned from crash reports. Until now I've had no idea what's going on. Possible Bug in the API? I've managed to replicate this behaviour on the simulator and on another device when building my app with Xcode 13 (beta 5) on iOS 15 (beta 5). It appears that NSPersistentCloudkitContainer has a memory leak and keeps ramping up the RAM consumption (and CPU at 100%) until the operating system kills the app. No code of mine is running. I'm not really an expert on these things and I tried to use Instruments to see if that would show me anything. It appears to be related to NSCloudkitMirroringDelegate getting 'stuck' somehow but I have no idea what to do with this information. My Core Data database is not tiny, but not massive by any means and NSPersistentCloudkitContainer has had no problems syncing to iCloud prior to iOS 15 (beta 4). If I restore my App Data (from an external backup file - 700MB with lots of many-many, many-one relationships, ckAssets, etc.) the data all gets added to Core Data without an issue at all. The console log (see below) then shows that a sync is created, scheduled & then started... but no data is uploaded. At this point the memory consumption starts and all I see is 'backgroundTask' warnings appear (only related to CloudKit) with no code of mine running. CoreData: CloudKit: CoreData+CloudKit: -[PFCloudKitExporter analyzeHistoryInStore:withManagedObjectContext:error:](501): <PFCloudKitExporter: 0x600000301450>: Exporting changes since (0): <NSPersistentHistoryToken - { "4B90A437-3D96-4AC9-A27A-E0F633CE5D9D" = 906; }> CoreData: CloudKit: CoreData+CloudKit: -[PFCloudKitExportContext processAnalyzedHistoryInStore:inManagedObjectContext:error:]_block_invoke_3(251): Finished processing analyzed history with 29501 metadata objects to create, 0 deleted rows without metadata. CoreData: CloudKit: CoreData+CloudKit: -[NSCloudKitMirroringDelegate _scheduleAutomatedExportWithLabel:activity:completionHandler:](2800): <NSCloudKitMirroringDelegate: 0x6000015515c0> - Beginning automated export - ExportActivity: <CKSchedulerActivity: 0x60000032c500; containerID=<CKContainerID: 0x600002ed3240; containerIdentifier=iCloud.com.nitramluap.Somnus, containerEnvironment="Sandbox">, identifier=com.apple.coredata.cloudkit.activity.export.4B90A437-3D96-4AC9-A27A-E0F633CE5D9D, priority=2, xpcActivityCriteriaOverrides={ Priority=Utility }> CoreData: CloudKit: CoreData+CloudKit: -[NSCloudKitMirroringDelegate executeMirroringRequest:error:](765): <NSCloudKitMirroringDelegate: 0x6000015515c0>: Asked to execute request: <NSCloudKitMirroringExportRequest: 0x600002ed2a30> CBE1852D-7793-46B6-8314-A681D2038B38 2021-08-13 08:41:01.518422+1000 Somnus[11058:671570] [BackgroundTask] Background Task 68 ("CoreData: CloudKit Export"), was created over 30 seconds ago. In applications running in the background, this creates a risk of termination. Remember to call UIApplication.endBackgroundTask(_:) for your task in a timely manner to avoid this. 2021-08-13 08:41:03.519455+1000 Somnus[11058:671570] [BackgroundTask] Background Task 154 ("CoreData: CloudKit Scheduling"), was created over 30 seconds ago. In applications running in the background, this creates a risk of termination. Remember to call UIApplication.endBackgroundTask(_:) for your task in a timely manner to avoid this. Just wondering if anyone else is having a similar issue? It never had a problem syncing an initial database restore prior to iOS 15 (beta 4) and the problems started right after installing iOS 15 (beta 4). I've submitted this to Apple Feedback and am awaiting a response (FB9412346). If this is unfixable I'm in real trouble (and my users are going to be livid). Thanks in advance!
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25
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13k
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Jun ’25
Call Blocking (CallKit) not working on iOS 26 Public Beta
Call blocking using a third-party CallKit app is not longer working with the latest iOS 26 Public Beta (23A5297m). We've tried several different Call Blocking apps (that used to work fine on iOS 18.5) and their call blocking functionality is not working anymore. All calls pass through and the phone rings on those "blocked" numbers. We got several user complaints about our app that is not working on iOS 26 Public Beta. We've filed 2 bug reports with Feedback Assistant: FB19140680 FB19140594 Please fix this issue in the next Beta versions of iOS 26 to have a stable iOS 26 release in the future. Thank you in advance.
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25
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1.1k
Activity
Aug ’25
Zsh kills Python process with plenty of available VM
On a MacBook Pro, 16GB of RAM, 500 GB SSD, OS Sequoia 15.7.1, M3 chip, I am running some python3 code in a conda environment that requires lots of RAM and sure enough, once physical memory is almost exhausted, swapfiles of about 1GB each start being created, which I can see in /System/Volumes/VM. This folder has about 470 GB of available space at the start of the process (I can see this through get info) however, once about 40 or so swapfiles are created, for a total of about 40GB of virtual memory occupied (and thus still plenty of available space in VM), zsh kills the python process responsible for the RAM usage (notably, it does not kill another python process using only about 100 MB of RAM). The message received is "zsh: killed" in the tmux pane where the logging of the process is printed. All the documentation I was able to consult says that macOS is designed to use up to all available storage on the startup disk (which is the one I am using since I have only one disk and the available space aforementioned reflects this) for swapping, when physical RAM is not enough. Then why is the process killed long before the swapping area is exhausted? In contrast, the same process on a Linux machine (basic python venv here) just keeps swapping, and never gets killed until swap area is exhausted. One last note, I do not have administrator rights on this device, so I could not run dmesg to retrieve more precise information, I can only check with df -h how the swap area increases little by little. My employer's IT team confirmed that they do not mess with memory usage on managed profiles, so macOS is just doing its thing. Thanks for any insight you can share on this issue, is it a known bug (perhaps with conda/python environments) or is it expected behaviour? Is there a way to keep the process from being killed?
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24
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787
Activity
Feb ’26
Importing Data into SwiftData in the Background Using ModelActor and @Query
I have an app with fairly typical requirements - I need to insert some data (in my case from the network but could be anything) and I want to do it in the background to keep the UI responsive. I'm using SwiftData. I've created a ModelActor that does the importing and using the debugger I can confirm that the data is indeed being inserted. On the UI side, I'm using @Query and a SwiftUI List to display the data but what I am seeing is that @Query is not updating as the data is being inserted. I have to quit and re-launch the app in order for the data to appear, almost like the context running the UI isn't communicating with the context in the ModelActor. I've included a barebones sample project. To reproduce the issue, tap the 'Background Insert' button. You'll see logs that show items being inserted but the UI is not showing any data. I've tested on the just released iOS 18b3 seed (22A5307f). The sample project is here: https://hanchor.s3.amazonaws.com/misc/SwiftDataBackgroundV2.zip
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24
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13
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6.3k
Activity
Feb ’26
Content Filter Permission Prompt Not Appearing in TestFlight
I added a Content Filter to my app, and when running it in Xcode (Debug/Release), I get the expected permission prompt: "Would like to filter network content (Allow / Don't Allow)". However, when I install the app via TestFlight, this prompt doesn’t appear at all, and the feature doesn’t work. Is there a special configuration required for TestFlight? Has anyone encountered this issue before? Thanks!
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23
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1
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1.1k
Activity
1w
Unable to activate Live Activities
Im having trouble enabling Live Activities in a new app. The option is not available in Xcode or in the developer portal. Is there something I have to do to activate this option?
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23
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13
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2.3k
Activity
Oct ’25
APNs Auth Key download error after revoking old key — “already downloaded” for new key
I created an APNs Auth Key in the Apple Developer portal and downloaded it successfully once. Later, due to some issues, I revoked that key. After that, I created a new APNs Auth Key. The download button appears, but when I click it, I get the message: "Auth Key can only be downloaded once. This auth key has already been downloaded." This is incorrect because: The key is newly created in my account. I have tried multiple browsers (Safari, Chrome), private/incognito mode, and even a different laptop. I have no other active APNs Auth Keys in my account. Without this .p8 file, I cannot configure push notifications for my iOS app (using Firebase Cloud Messaging). This is blocking my production release. Has anyone else experienced this? Is there a way to reset or force a fresh APNs Auth Key when this happens?
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23
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11
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1.5k
Activity
Sep ’25
DNS Proxy Provider remains active after app uninstall | iOS
Hi, I've encountered a strange behavior in the DNS Proxy Provider extension. Our app implements both DNS Proxy Provider and Content Filter Providers extensions, configured via MDM. When the app is uninstalled, the behavior of the providers differs: For Content Filter Providers (both Filter Control and Filter Data Providers), the providers stop as expected with the stop reason: /** @const NEProviderStopReasonProviderDisabled The provider was disabled. */ case providerDisabled = 5 However, for the DNS Proxy Provider, the provider remains in the "Running" state, even though there is no app available to match the provider's bundle ID in the uploaded configuration profile. When the app is reinstalled: The Content Filter Providers start as expected. The DNS Proxy Provider stops with the stop reason: /** @const NEProviderStopReasonAppUpdate The NEProvider is being updated */ @available(iOS 13.0, *) case appUpdate = 16 At this point, the DNS Proxy Provider remains in an 'Invalid' state. Reinstalling the app a second time seems to resolve the issue, with both the DNS Proxy Provider and Content Filter Providers starting as expected. This issue seems to occur only if some time has passed after the DNS Proxy Provider entered the 'Running' state. It appears as though the system retains a stale configuration for the DNS Proxy Provider, even after the app has been removed. Steps to reproduce: Install the app and configure both DNS Proxy Provider and Content Filter Providers using MDM. Uninstall the app. Content Filter Providers are stopped as expected (NEProviderStopReason.providerDisabled = 5). DNS Proxy Provider remains in the 'Running' state. Reinstall the app. Content Filter Providers start as expected. DNS Proxy Provider stops with NEProviderStopReason.appUpdate (16) and remains 'Invalid'. Reinstall the app again. DNS Proxy Provider now starts as expected. This behavior raises concerns about how the system manages the lifecycle of DNS Proxy Provider, because DNS Proxy Provider is matched with provider bundle id in .mobileconfig file. Has anyone else experienced this issue? Any suggestions on how to address or debug this behavior would be highly appreciated. Thank you!
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22
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1
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875
Activity
Oct ’25
An In-App Purchase has been returned
There is a warning message displays in my itune connect's In App Purchase page but there is nothing highlighted in the table. This is very stange. Is there anyone having the same problem? Or can anyone help?
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33
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0
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19k
Activity
Feb ’26
Cancel subscription not working in TestFlight
Hi, I have deployed my app on Test Flight, I have two subscriptions, monthly and yearly. User can have one of them at a time and upgrade, downgrade to the other. Upgrade, downgrade, cancel from the Apple Settings worked fine in the sandbox environment when testing locally. Now when I have deployed the app on TestFlight, I was able to purchase the subscription successfully from my app. Now when I want to cancel my subscription from the Apple Settings it gives me the following error after confirming cancellation, 'Your request is temporarily unable to be processed. Please try again later.' Also the other subscription offer (yearly) is also not shown to which I could upgrade, even though in the sandbox I was able to upgrade downgrade from the settings. Another thing I have noticed is that the app Icon or name is not shown anywhere in settings with the subscription. Instead of app icon only empty square is shown. Even though app icon shows fine everywhere else. Can someone please help me figure out this issue?
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22
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15
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4.5k
Activity
Oct ’25
iOS 26.2 RC DeviceActivityMonitor.eventDidReachThreshold regression?
Hi there, Starting with iOS 26.2 RC, all my DeviceActivityMonitor.eventDidReachThreshold get activated immediately as I pick up my iPhone for the first time, two nights in a row. Feedback: FB21267341 There's always a chance something odd is happening to my device in particular (although I can't recall making any changes here and the debug logs point to the issue), but just getting this out there ASAP in case others are seeing this (or haven't tried!), and it's critical as this is the RC. DeviceActivityMonitor.eventDidReachThreshold issues also mentioned here: https://developer.apple.com/forums/thread/793747; but I believe they are different and were potentially fixed in iOS 26.1, but it points to this part of the technology having issues and maybe someone from Apple has been tweaking it.
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22
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7
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2.7k
Activity
2d
Billing Problem while subscription renewal.
Hello, I'm currently experiencing issues with IAP subscription setup. The following error appears: "Billing Problem, There was a problem with your subscription renewal. To resolve, turn on Allow Purchases & Renewals, or leave off to test failed in-app purchase attempts and subscription renewals." I'm testing with a sandbox account, and automatic subscription renewal is turned on in the sandbox settings. A notification screen appears at the OS level, and consequently, a DID_FAIL_TO_RENEW error occurs on our payment server. I cannot determine the cause at all, so I would appreciate your assistance in checking this issue.
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21
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15
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1.6k
Activity
Jan ’26
filecopy fails with errno 34 "Result too large" when copying from NAS
A user of my app reported that when my app copies files from a QNAP NAS to a folder on their Mac, they get the error "Result too large". When copying the same files from the Desktop, it works. I asked them to reproduce the issue with the sample code below and they confirmed that it reproduces. They contacted QNAP for support who in turn contacted me saying that they are not sure they can do anything about it, and asking if Apple can help. Both the app user and QNAP are willing to help, but at this point I'm also unsure how to proceed. Can someone at Apple say anything about this? Is this something QNAP should solve, or is this a bug in macOS? P.S.: I've had users in the past who reported the same issue with other brands, mostly Synology. import Cocoa @main class AppDelegate: NSObject, NSApplicationDelegate { func applicationDidFinishLaunching(_ aNotification: Notification) { let openPanel = NSOpenPanel() openPanel.canChooseDirectories = true openPanel.runModal() let source = openPanel.urls[0] openPanel.canChooseFiles = false openPanel.runModal() let destination = openPanel.urls[0] do { try copyFile(from: source, to: destination.appendingPathComponent(source.lastPathComponent, isDirectory: false)) } catch { NSAlert(error: error).runModal() } NSApp.terminate(nil) } private func copyFile(from source: URL, to destination: URL) throws { if try source.resourceValues(forKeys: [.isDirectoryKey]).isDirectory == true { try FileManager.default.createDirectory(at: destination, withIntermediateDirectories: false) for source in try FileManager.default.contentsOfDirectory(at: source, includingPropertiesForKeys: nil) { try copyFile(from: source, to: destination.appendingPathComponent(source.lastPathComponent, isDirectory: false)) } } else { try copyRegularFile(from: source, to: destination) } } private func copyRegularFile(from source: URL, to destination: URL) throws { let state = copyfile_state_alloc() defer { copyfile_state_free(state) } var bsize = UInt32(16_777_216) if copyfile_state_set(state, UInt32(COPYFILE_STATE_BSIZE), &bsize) != 0 { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } else if copyfile_state_set(state, UInt32(COPYFILE_STATE_STATUS_CB), unsafeBitCast(copyfileCallback, to: UnsafeRawPointer.self)) != 0 { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } else if copyfile(source.path, destination.path, state, copyfile_flags_t(COPYFILE_DATA | COPYFILE_SECURITY | COPYFILE_NOFOLLOW | COPYFILE_EXCL | COPYFILE_XATTR)) != 0 { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } } private let copyfileCallback: copyfile_callback_t = { what, stage, state, src, dst, ctx in if what == COPYFILE_COPY_DATA { if stage == COPYFILE_ERR { return COPYFILE_QUIT } } return COPYFILE_CONTINUE } }
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21
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535
Activity
5d
Is calling different SBApplication objects from different threads bad?
Not quite but maybe sorta related to the errOSAInternalTableOverflow problem I asked about in a different thread, this one deals with crashes our app gets (and much more frequently lately after recent OS updates (15.7.3) are OK'd by our IT department). Our app can run multiple jobs concurrently, each in their own NSOperation. Each op creates its own SBApplication instance that controls unique instances of InDesignServer. What I'm seeing recently is lots of crashes happening while multiple ops are calling into ScriptingBridge. Shown at the bottom is one of the stack crawls from one of the threads. I've trimmed all but the last of our code. Other threads have a similar stack crawl. In searching for answers, Google's AI overview mentions "If you must use multiple threads, ensure that each thread creates its own SBApplication instance…" Which is what we do. No thread can reach another thread's SBApplication instance. Is that statement a lie? Do I need to lock around every ScriptingBridge call (which is going to severely slow things down)? 0 AE 0x1a7dba8d4 0x1a7d80000 + 239828 1 AE 0x1a7d826d8 AEProcessMessage + 3496 2 AE 0x1a7d8f210 0x1a7d80000 + 61968 3 AE 0x1a7d91978 0x1a7d80000 + 72056 4 AE 0x1a7d91764 0x1a7d80000 + 71524 5 CoreFoundation 0x1a0396a64 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 6 CoreFoundation 0x1a03969f8 __CFRunLoopDoSource0 + 172 7 CoreFoundation 0x1a0396764 __CFRunLoopDoSources0 + 232 8 CoreFoundation 0x1a03953b8 __CFRunLoopRun + 840 9 CoreFoundation 0x1a03949e8 CFRunLoopRunSpecific + 572 10 AE 0x1a7dbc108 0x1a7d80000 + 246024 11 AE 0x1a7d988fc AESendMessage + 4724 12 ScriptingBridge 0x1ecb652ac -[SBAppContext sendEvent:error:] + 80 13 ScriptingBridge 0x1ecb5eb4c -[SBObject sendEvent:id:keys:values:count:] + 216 14 ScriptingBridge 0x1ecb6890c -[SBCommandThunk invoke:] + 376 15 CoreFoundation 0x1a037594c ___forwarding___ + 956 16 CoreFoundation 0x1a03754d0 _CF_forwarding_prep_0 + 96 17 RRD 0x1027fca18 -[AppleScriptHelper runAppleScript:withSubstitutionValues:usingSBApp:] + 1036
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21
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498
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2w
System Panic with IOUserSCSIParallelInterfaceController during Dispatch Queue Configuration
Hello everyone, We are in the process of migrating a high-performance storage KEXT to DriverKit. During our initial validation phase, we noticed a performance gap between the DEXT and the KEXT, which prompted us to try and optimize our I/O handling process. Background and Motivation: Our test hardware is a RAID 0 array of two HDDs. According to AJA System Test, our legacy KEXT achieves a write speed of about 645 MB/s on this hardware, whereas the new DEXT reaches about 565 MB/s. We suspect the primary reason for this performance gap might be that the DEXT, by default, uses a serial work-loop to submit I/O commands, which fails to fully leverage the parallelism of the hardware array. Therefore, to eliminate this bottleneck and improve performance, we configured a dedicated parallel dispatch queue (MyParallelIOQueue) for the UserProcessParallelTask method. However, during our implementation attempt, we encountered a critical issue that caused a system-wide crash. The Operation Causing the Panic: We configured MyParallelIOQueue using the following combination of methods: In the .iig file: We appended the QUEUENAME(MyParallelIOQueue) macro after the override keyword of the UserProcessParallelTask method declaration. In the .cpp file: We manually created a queue with the same name by calling the IODispatchQueue::Create() function within our UserInitializeController method. The Result: This results in a macOS kernel panic during the DEXT loading process, forcing the user to perform a hard reboot. After the reboot, checking with the systemextensionsctl list command reveals the DEXT's status as [activated waiting for user], which indicates that it encountered an unrecoverable, fatal error during its initialization. Key Code Snippets to Reproduce the Panic: In .iig file - this was our exact implementation: class DRV_MAIN_CLASS_NAME: public IOUserSCSIParallelInterfaceController { public: virtual kern_return_t UserProcessParallelTask(...) override QUEUENAME(MyParallelIOQueue); }; In .h file: struct DRV_MAIN_CLASS_NAME_IVars { // ... IODispatchQueue* MyParallelIOQueue; }; In UserInitializeController implementation: kern_return_t IMPL(DRV_MAIN_CLASS_NAME, UserInitializeController) { // ... // We also included code to manually create the queue. kern_return_t ret = IODispatchQueue::Create("MyParallelIOQueue", kIODispatchQueueReentrant, 0, &ivars->MyParallelIOQueue); if (ret != kIOReturnSuccess) { // ... error handling ... } // ... return kIOReturnSuccess; } Our Question: What is the officially recommended and most stable method for configuring UserProcessParallelTask_Impl() to use a parallel I/O queue? Clarifying this is crucial for all developers pursuing high-performance storage solutions with DriverKit. Any explanation or guidance would be greatly appreciated. Best Regards, Charles
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21
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895
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Feb ’26
Wi-Fi Aware between iOS 26 and Android device
Eager to see the Wi-Fi Aware communication between iPhone (iOS 26) and an Android device, I tried iOS 26 beta on my iPhone16. and tried below code snippet from provided example at https://developer.apple.com/documentation/wifiaware/building-peer-to-peer-apps. Idea is to first verify discovery of Android WiFiAware service on iOS. extension WAPublishableService { public static var simulationService: WAPublishableService { allServices[simulationServiceName]! } } extension WASubscribableService { public static var simulationService: WASubscribableService { allServices[simulationServiceName]! } } struct ContentView: View { @State private var showingDevicePicker = false @State private var pairedDevices: [WAPairedDevice] = [] // To hold discovered/paired devices var body: some View { VStack { Button("Discover Devices") { showingDevicePicker = true // Trigger the device picker presentation } .sheet(isPresented: $showingDevicePicker) { DevicePicker(.wifiAware(.connecting(to: .selected([]), from: .simulationService))) { endpoint in print("Paired Endpoint: \(endpoint)") } label: { Image(systemName: "plus") Text("Add Device") } fallback: { Image(systemName: "xmark.circle") Text("Unavailable") } } List(pairedDevices) { device in Text(device.name ?? "Unknown Device") } } } } With suggested entitlement of WiFiAware and info.plist of service info. Then I had Android device with WIFiAware service publishing service (service name set '_sat-simulation._udp') from this app https://github.com/anagramrice/NAN. But above iOS app is unable to find the service published from android device. Am I missing something? Note: the above Android-NAN app seems to be working fine between Android to Another Android.
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21
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2
Views
1.8k
Activity
Sep ’25
NWBrowser with bonjour returning PolicyDenied(-65570)
Hi, Having an issue on one mac using Xcode 16.3 and simulator 18.4. macSO 15.4 We are checking for bonjour: authorizationBrowser = NWBrowser(for: .bonjour(type: "_bonjour._tcp", domain: nil), using: parameters) authorizationBrowser?.stateUpdateHandler = { [weak self] newState in switch newState { ... } } However at the command line we get the error: nw_browser_fail_on_dns_error_locked [B1] nw_browser_dns_service_browse_callback failed: PolicyDenied(-65570) Any idea why this is happening? or what this error means? Thanks Antz
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21
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11
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5.7k
Activity
Jun ’25