Hi, I'm new to swift programming and right now writing an app for esp8266-controlled lamp device. My lamp is broadcasting it's own IP through bonjour. So all I want is to discover any lamps in my network (http.tcp) and to read name and value. Is there any example of such implementation? All I found so far is old or a lit bit complicated for such simple question. Thanks in advance!

When I tap on one of the buttons in the ShieldAction extension I want to close the shield and open the parent app instead of the shielded app. Is there any way of doing this using the Screen Time API? class ShieldActionExtension: ShieldActionDelegate {      override func handle(action: ShieldAction, for application: ApplicationToken, completionHandler: @escaping (ShieldActionResponse) -> Void) {     // Handle the action as needed.           let store = ManagedSettingsStore()               switch action {     case .primaryButtonPressed:       //TODO - open parent app       completionHandler(.defer)     case .secondaryButtonPressed:       //remove shield       store.shield.applications?.remove(application)       completionHandler(.defer)         @unknown default:       fatalError()     }   }   }

I've been seeing a high number of BGTaskScheduler related crashes, all of them coming from iOS 18.4. I've encountered this myself once on launch upon installing my app, but haven't been able to reproduce it since, even after doing multiple relaunches and reinstalls. Crash report attached at the bottom of this post. I am not even able to symbolicate the reports despite having the archive on my MacBook: Does anyone know if this is an iOS 18.4 bug or am I doing something wrong when scheduling the task? Below is my code for scheduling the background task on the view that appears when my app launches: .onChange(of: scenePhase) { newPhase in if newPhase == .active { #if !os(macOS) let request = BGAppRefreshTaskRequest(identifier: "notifications") request.earliestBeginDate = Calendar.current.date(byAdding: .hour, value: 3, to: Date()) do { try BGTaskScheduler.shared.submit(request) Logger.notifications.log("Background task scheduled. Earliest begin date: \(request.earliestBeginDate?.description ?? "nil", privacy: .public)") } catch let error { // print("Scheduling Error \(error.localizedDescription)") Logger.notifications.error("Error scheduling background task: \(error.localizedDescription, privacy: .public)") } #endif ... } 2025-02-23_19-53-50.2294_+0000-876d2b8ec083447af883961da90398f00562f781.crash

Hello! I am experiencing some strange bugs around DeviceActivityEvents: When creating a DeviceActivityEvent we can assign a threshold and applicationTokens. The idea is, that after the user has spent said threshold on said apps, eventDidReachThreshold is called. includesPastActivity is set to false. On iOS 26 however, it happens (quite reliably after updating to a new beta seed) quite often that eventDidReachThreshold is called immediately (after a couple of seconds) instead of waiting for the threshold to be met. Is anyone else seeing similar issues on iOS 26? Only workaround I have found is to ask users to re-grant Screen Time permissions. This only holds for about two weeks though or at most until the next iOS 26 beta update is installed. Feedback filed under: FB18061981 FB18927456

SMBClient-593 introduces a crtitical bug. When reading and writing data at high volume, the SMBClient no longer properly receives and handle responses from the server. In some cases, the client mishandles the response packet and the following errors are seen in the logs: 2025-12-02 21:36:04.774772-0700 localhost kernel[0]: (smbfs) smb2_smb_parse_write_one: Bad struct size: 0 2025-12-02 21:36:04.774776-0700 localhost kernel[0]: (smbfs) smb2_smb_write: smb2_smb_read_write_async failed with an error 72 2025-12-02 21:36:04.774777-0700 localhost kernel[0]: (smbfs) smbfs_do_strategy: file.txt: WRITE failed with an error of 72 In other cases, the client mishandles the response packet and becomes completely unresponsive, unable to send or receive additional messages, and a forced shutdown of the computer is required to recover. This bug is only present on macos 26. We believe the operative change is in the latest commit, SMBClient-593 beginning at line now 3011 in smb_iod.c. The issue seems to be a race, and occurs much more frequently once throughput exceeds around 10Gbps, and again more frequently above 20Gbps.

We are experiencing a crash in our application that only occurs on devices running iOS beta 26. It looks like a Beta problem. The crash appears to be caused by an excessive number of open File Descriptors. We identified this after noticing a series of crashes in different parts of the code each time the app was launched. Sometimes it would crash right at the beginning, when trying to load the Firebase plist file. That’s when we noticed a log message saying “too many open files,” and upon further investigation, we found that an excessive number of File Descriptors were open in our app, right after the didFinishLaunching method of the AppDelegate. We used the native Darwin library to log information about the FDs and collected the following: func logFDs() { var rlim = rlimit() if getrlimit(RLIMIT_NOFILE, &rlim) == 0 { print("FD LIMIT: soft: \(rlim.rlim_cur), hard: \(rlim.rlim_max)") } // Count open FDs before Firebase let openFDsBefore = countOpenFileDescriptors() print("Open file descriptors BEFORE Firebase.configure(): \(openFDsBefore)") } private func countOpenFileDescriptors() -> Int { var count = 0 let maxFD = getdtablesize() for fd in 0..<maxFD { if fcntl(fd, F_GETFD) != -1 { count += 1 } } return count } With this code, we obtained the following data: On a device with iOS 26 Beta 1, 2, or 3: FD LIMIT: soft: 256, hard: 9223372036854775807 Open file descriptors BEFORE Firebase.configure(): 256 On a device with iOS 18: FD LIMIT: soft: 256, hard: 9223372036854775807 Open file descriptors BEFORE Firebase.configure(): 57 In the case of the device running iOS 26 beta, the app crashes when executing Firebase.configure() because it cannot open the plist file, even though it can be found at the correct path — meaning the OS locates it. To confirm this was indeed the issue, we used the following code to close FDs before proceeding with Firebase configuration. By placing a breakpoint just before Firebase.configure() and running the following LLDB command: expr -l c -- for (int fd = 180; fd < 256; fd++) { (int)close(fd); } This released the FDs, allowing Firebase to proceed with its configuration as expected. However, the app would later crash again after hitting the soft limit of file descriptors once more. Digging deeper, we used this code to try to identify which FDs were being opened and causing the soft limit to be exceeded: func checkFDPath() { var r = rlimit() if getrlimit(RLIMIT_NOFILE, &r) == 0 { print("FD LIMIT: soft: \(r.rlim_cur), hard: \(r.rlim_max)") for fd in 0..<Int32(r.rlim_cur) { var path = [CChar](repeating: 0, count: Int(PATH_MAX)) if fcntl(fd, F_GETPATH, &path) != -1 { print(String(cString: path)) } } } } We ran this command at the very beginning of the didFinishLaunching method in the AppDelegate. On iOS 26, the log repeatedly showed Cryptexes creating a massive number of FDs, such as: /dev/null /dev/ttys000 /dev/ttys000 /private/var/mobile/Containers/Data/Application/AEE414F2-7D6F-44DF-A6D9-92EDD1D2B014/Library/Application Support/DTX_8.191.1.1003.sqlite /private/var/mobile/Containers/Data/Application/AEE414F2-7D6F-44DF-A6D9-92EDD1D2B014/Library/Caches/KSCrash/MyAppScheme/Data/ConsoleLog.txt /private/var/mobile/Containers/Data/Application/AEE414F2-7D6F-44DF-A6D9-92EDD1D2B014/Library/HTTPStorages/mybundleId/httpstorages.sqlite /private/var/mobile/Containers/Data/Application/AEE414F2-7D6F-44DF-A6D9-92EDD1D2B014/Library/HTTPStorages/mybundleId/httpstorages.sqlite-wal /private/var/mobile/Containers/Data/Application/AEE414F2-7D6F-44DF-A6D9-92EDD1D2B014/Library/HTTPStorages/mybundleId/httpstorages.sqlite-shm /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.01 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.11 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.12 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.13 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.14 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.15 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.16 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.17 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.18 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.19 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.20 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.21 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.22 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.23 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.24 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.25 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.26 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.29 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.30 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.31 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.32 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.36 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.37 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.38 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.39 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.40 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e … This repeats itself a lot of times. … /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.36 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.37 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.38 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.39 /private/preboot/Cryptexes/OS/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.40

Hi everyone, We’re running into a serious issue with App Clip Experience updates not propagating to devices, and I’m hoping someone here has encountered (or solved) this before. Problem Once an App Clip Experience is created and used on devices, subsequent updates made in App Store Connect do not reflect on any devices, even after a long period of time. We’ve tried: • Updating the App Clip Experience URL (adding utm parameters, for example, utm_source and scanning via QR code) • Modifying Experience metadata/content • Waiting several days (over a week) • Testing on multiple devices (including devices that never opened the App Clip before) Despite this, the App Clip continues to show the initially created content, while App Store Connect clearly shows the updated configuration. Important Details • We currently have ~1,300 App Clip Experiences created • All App Clips use the same App Clip Bundle ID • The content behind the URLs updates correctly on the website • Only the App Clip continues to show stale / initial data • Removing and re-invoking the App Clip on devices does not consistently fix the issue At this point, manual updates via App Store Connect appear to be completely ignored once the App Clip is “established.” Questions 1. Is there a known hard cache or CDN behavior on Apple’s side that prevents App Clip Experience updates from propagating? 2. Is there any way to invalidate or refresh an existing App Clip Experience? 3. Does having a large number of App Clip Experiences (~1300) affect update behavior or caching? 4. Is the recommended approach to treat App Clip Experience as immutable and handle all updates via backend / dynamic content only? Right now it feels like: App Clip Experience is effectively a one-time snapshot and not a live-updatable configuration. Any insights, confirmations, or official guidance would be greatly appreciated. Thanks in advance.

Noticing a few issues with Screen Savers in macOS Tahoe developer beta 1 : The command open x-apple.systempreferences:com.apple.ScreenSaver-Settings.extension no longer works to open the Screen Savers preference pane. The reason? There is no longer a Screen Saver preference pane - it still exists, but it's now a Modal dialog (that can not be resized) that is opened from within the Wallpaper preference pane, by clicking a button. Something funny is happening with legacyScreensaver - I think that ScreenSaverView.Init(frame:isPreview) may be passing wrong values, e.g. the isPreview boolean is false in Preview mode? I've submitted Feedback # FB17895600 about some of these, and will report back more as I figure things out. Please feel free to add to this thread, thanks!

Our app uses a 24-hour DeviceActivityMonitor repeating schedule to send users notifications for every hour of screen time they spend on their phone per day. Notifications are sent from eventDidReachThreshold callbacks at 1, 2, 3, etc, hour thresholds to keep them aware of their screen time. We have recently received an influx of emails from our users that after updating to iOS 17.6.1 their DeviceActivityMonitor notifications are saying their screen time was much higher than what is shown in DeviceActivityReport and their device's Screen Time settings. These users have disabled "Share Across Devices" - but I suspect the DeviceActivityMonitor is still getting screen time from their other devices even though that setting is turned off. Has anybody else noticed this, understands what is causing this, or could recommend a fix that we can tell our users to do?

On iOS 26 beta 5, it is impossible to add a VPN configuration when a passcode is set on the device. Every time, all it does is redirect to the Settings app with no prompt for passcode. The only way around this is to disable passcode on the device so adding a VPN configuration doesn’t have to open the Settings app. This issue happened intermittently in the past with previous iOS 26 betas and even on iOS 18, but the problem has worsened on iOS 26 beta 5 to the point where you have to turn off passcode to add a VPN. Feedback ID: FB17974765

I have an Apple app that uses SwiftData and icloud to sync the App's data across users' devices. Everything is working well. However, I am facing the following issue: SwiftData does not support public sharing of the object graph with other users via iCloud. How can I overcome this limitation without stopping using SwiftData? Thanks in advance!

I am trying to localize the CFBundleDisplayName and OSBundleUsageDescription of a driver that is part of an app. I am able to use InfoPlist.strings files to localize the Bundle display name for the app, but when I try to use the same file as part of the driver, the name displayed in settings for the app does not change correctly. In fact, it seems to follow the default language set in the xcode project. If the default language is not included in the suite of InfoPlist.strings files, it seems to take the string from the info.plist file. sometimes it just seems to take the English version regardless of the default language or tablet language. Has anyone had success with this?

Hello everyone, I used SwiftData for v1 of an app and am now trying to make changes to the schema for v2. I created the v2 schema that adds a property to one of the models. I need to populate the new property so I made a custom migration using didMigrate. However that doesn't seem to matter what I do in the migration because creating the ModelContainer throws an error before didMigrate ever gets called. The error is: Unresolved error loading container Error Domain=NSCocoaErrorDomain Code=134060 "A Core Data error occurred." UserInfo={NSLocalizedFailureReason=Instances of NSCloudKitMirroringDelegate are not reusable and should have a lifecycle tied to a given instance of NSPersistentStore.} Higher up in the Xcode output I see things like this (in order): Request 'D25A8CB8-7341-4FA8-B2F8-3DE2D35B5273' was cancelled because the store was removed from the coordinator. BUG IN CLIENT OF CLOUDKIT: Registering a handler for a CKScheduler activity identifier that has already been registered CloudKit setup failed because it couldn't register a handler for the export activity. There is another instance of this persistent store actively syncing with CloudKit in this process. How can I know from this output what I am doing incorrectly? Any idea what I should take a look at or try to do differently? This is a simple app with three models and nothing fancy. The only change in the schema is to add a property. The new property is declared as optional and has an inverse that is also declared as optional. Thanks for any insight!

AppleScript for the Music app no longer supports the current track event. Before macOS Tahoe, running the following script in Script Editor would return the current track information: tell application "Music" return name of current track end tell However, when I run this script on a device with macOS 26 Tahoe, I receive this error: "Result: error "Music got an error: Can’t get name of current track." number -1728 from name of current track” I've tested this extensively, and here are my findings: Going to the “songs” tab and playing something from there makes everything work. Playing any song directly will make it work with current track UNLESS this song is NOT in your Music library (either added through Apple Music or uploaded). If you play a song not in your library, current track is not updated even if you clicked on it specifically. Playing an album (in your library obviously) makes all the tracks within it appear in current track until autoplay takes over. Any autoplayed track won’t appear in current track even if in your library (unless: see the last bulletpoint) Music played through the “songs” tab all appear in current track even if autoplay kicks in. I assume this is because this tab is an iTunes legacy (visually and under the hood) and doesn’t use the modern autoplay. This tab also won’t play non-library songs unlike the “albums” tab which seems to use the correct autoplay and suffers the same symptoms as the “recently added”, “home”, “radio”, etc… tabs. Is this a bug, or has Apple simply deprecated this functionality?

After pairing and having subscribed to a service, and even after having exchanged messages, the service fails after a period of time and both devices need to pair again.

Hello, After submitting onboarding form for Live Caller ID Lookup feature, we received rejection response that our OHTTP gateway doesn't support HTTP/2. We have run provided command openssl s_client -alpn h2 -connect with our domain several times from different machines and environments, and our results consistently confirm that HTTP/2 is indeed supported by our OHTTP gateway. The output clearly shows ALPN protocol: h2, indicating successful HTTP/2 negotiation. Here is the log chunk from the command-line response: No client certificate CA names sent Peer signing digest: SHA256 Peer signature type: RSA-PSS Server Temp Key: X25519, 253 bits --- SSL handshake has read 4393 bytes and written 406 bytes Verification: OK --- New, TLSv1.3, Cipher is TLS_AES_128_GCM_SHA256 Server public key is 2048 bit This TLS version forbids renegotiation. Compression: NONE Expansion: NONE ALPN protocol: h2 Early data was not sent Verify return code: 0 (ok) --- DONE We have also tried different 3rd-party services to check the HTTP/2 support and they also confirmed that HTTP/2 is supported. Is it possible to provide additional details on the specific criteria or test conditions that led to its non-approval? I'm happy to provide any further diagnostic information or engage in more detailed technical discussion.

We operate a social network application, SportsYou with over 3 million monthly active users and are experiencing significant issues with push notification delivery through APNs. We have a large number of users reporting they are not receiving push notifications. Our infrastructure uses AWS SNS integrated with APNs to deliver notifications. However, AWS CloudWatch consistently reports successful delivery (Success response), even though users confirm they never received the notifications. Because we receive success responses from AWS SNS, our system does not attempt to recreate or refresh the device endpoints. This leaves us unable to detect or recover from these delivery failures automatically. This issue is widespread and inconsistent. It affects users across multiple variables including different iOS versions, different device models, and different versions of our application. We cannot identify a clear pattern that would help us isolate the root cause. With millions of active users, even a small percentage of delivery failures represents thousands of users experiencing a degraded service. This is significantly impacting user engagement and satisfaction. We need guidance on how to properly diagnose this issue and ensure reliable notification delivery to our users. Specifically, we'd like to understand why we're receiving success responses when notifications aren't being delivered, and what steps we can take to detect and prevent these failures.

I recently created a Sandbox account and successfully added an Apple Pay test MasterCard to the sandbox Wallet to run a test. Yesterday, I created a different account and tried to add a MasterCard on another device, but I received a "Card device limit" error. I then deleted the card from the original device (where it had been successfully added) and tried to re-add it, but this device also failed. I was able to confirm that a JCB card can be added, but I need to test with MasterCard. What should I do to resolve this?

Hi, We've noticed that this issue occurs more frequently after upgrading to iOS 18.4.1 and can result in one-way audio. Our app uses CallKit with WebRTC to establish VoIP connections. However, on iOS 18.4.1, CallKit no longer triggers: func provider(_ provider: CXProvider, didActivate audioSession: AVAudioSession) We're currently comparing the occurrence rate across different iOS versions to better understand the impact. Could you please help analyze the root cause of this issue?

I've been trying to add a CoreSpotlight indexer to my macOS application. The new template for the indexer uses the new appex CSImportExtension style importer. I've been following this -> https://developer.apple.com/documentation/corespotlight/csimportextension I changed the CSSupportedContentTypes in the Info.plist file to the correct file type uti. I added a dummy value into the attributes (see code below) - just setting contentDescription to 'noodle' (easy to search for) class ImportExtension: CSImportExtension {   override func update(_ attributes: CSSearchableItemAttributeSet, forFileAt: URL) throws {     // Add a dummy value, and see whether spotlight finds it     attributes.contentDescription = "noodle" } } I have a number of files on disk that match the uti (and can be found when I search by the file name) Yet, when I build and run my app, the a spotlight search for 'noodle' finds no results. Can anyone give me any advice? I cannot find any indication that the ImportExtension is called (although when I put a log message at the start of the update() call there's no message in the console which seems to suggest it's not being called). Is there any way of debugging this? Cheers and thanks -- Darren.