I am in the middle of investigating an issue arising in the call to setsockopt syscall where it returns an undocumented and unexpected errno. As part of that, I'm looking for a way to list any socket content filters or any such extensions are in play on the system where this happens. To do that, I ran: systemextensionsctl list That retuns the following output: 0 extension(s) which seems to indicate there's no filters or extensions in play. However, when I do: netstat -s among other things, it shows: net_api: 2 interface filters currently attached 2 interface filters currently attached by OS 2 interface filters attached since boot 2 interface filters attached since boot by OS ... 4 socket filters currently attached 4 socket filters currently attached by OS 4 socket filters attached since boot 4 socket filters attached since boot by OS What would be the right command/tool/options that I could use to list all the socket filters/extensions (and their details) that are in use and applicable when a call to setsockopt is made from an application on that system? Edit: This is on a macosx-aarch64 with various different OS versions - 13.6.7, 14.3.1 and even 14.4.1.

Hello! My app wants to disable VPN connection. I used the loadFromPreferencesWithCompletionHandler method of NEVPNManager for detection, but regardless of whether the VPN was actually connected or not, it kept returning NEVPNStatusInvalid. How should I handle this issue? NEVPNManager *vpnManager = [NEVPNManager sharedManager]; [vpnManager loadFromPreferencesWithCompletionHandler:^(NSError * _Nullable error) { if (error) { return; } NEVPNStatus status = vpnManager.connection.status; switch (status) { case NEVPNStatusInvalid: // kept returning NEVPNStatusInvalid break; case NEVPNStatusDisconnected: break; case NEVPNStatusConnecting: break; case NEVPNStatusConnected: break; case NEVPNStatusReasserting: break; case NEVPNStatusDisconnecting: break; default: break; } }];

We require the following Network Extension entitlements without the -systemextension suffix: packet-tunnel-provider app-proxy-provider Our application uses the legacy NetworkExtension framework, not the newer System Extensions. Although our provisioning profile has been approved by Apple, the entitlements are still being suffixed automatically with -systemextension. Since our code is built on the legacy NetworkExtension framework, this causes VPN functionality to break. Target platforms: macOS 14 & 15 (distributed outside the Mac App Store via a .pkg installer). Is there a way to use the original (non-systemextension) entitlements in this setup?

We're seeing an issue with bonjour services since macOS 15.4 onwards, specifically when running xcuitests on simulators that communicate with an app via bonjour services, the NWListener fails with -65555: NoAuth Interestingly it only fails on subsequent iterations of the test, first iteration always succeeds. The same code works fine on macOS 15.3.1 and earlier, but not 15.4 or 15.5. Is this related to, or the same issue as here? https://developer.apple.com/forums/thread/780655 Also raised in feedback assistant: FB17804120

你好，是这样的，目的我使用的是mac mini进行软件测试，我目前测试的软件会通过本地回环地址127.0.0.1进行数据传输，这种数据传输不是网络请求，所以用网络抓包的手段，没法测试。所以，我目前的想法是修改您macOS的本地回环地址优先级，定向到我自己的代理服务器，进行数据测试和请求检测。我对liunx系统的作比较了解，但是对于macos上面这方面设置的修改不太清楚。 希望您可以解答！

We have a Java application built for macOS. On the first launch, the application prompts the user to allow local network access. We've correctly added the NSLocalNetworkUsageDescription key to the Info.plist, and the provided description appears in the system prompt. After the user grants permission, the application can successfully connect to a local server using its hostname. However, the issue arises after the system is rebooted. When the application is launched again, macOS does not prompt for local network access a second time—which is expected, as the permission was already granted. Despite this, the application is unable to connect to the local server. It appears the previously granted permission is being ignored after a reboot. A temporary workaround is to manually toggle the Local Network permission off and back on via System Settings > Privacy & Security, which restores connectivity—until the next reboot. This behavior is highly disruptive, both for us and for a significant number of our users. We can reproduce this on multiple systems... The issues started from macOS Sequoia 15.0 By opening the application bundle using "Show Package Contents," we can launch the application via "JavaAppLauncher" without any issues. Once started, the application is able to connect to our server over the local network. This seems to bypass the granted permissions? "JavaAppLauncher" is also been used in our Info.plist file

Dear Developers, I would like to suggest an optimization for the logic governing the download and installation queue for app updates. Currently, when multiple applications are awaiting updates, the prioritization does not appear to consider the update payload size. My proposal is to implement a logic that prioritizes the download and installation of updates with a smaller delta size (fewer MB) before those with a larger delta. Practical Example: A 1MB update would be processed before a 500MB update, even if their arrival order in the queue was inverted. Potential Benefits: Perceived Speed Optimization (UX): Users would gain access to functional applications more quickly, especially in scenarios with multiple pending updates. Network Efficiency: In limited or intermittent bandwidth scenarios, completing smaller downloads first can reduce the chance of download failures and optimize network resource utilization. Device Resource Management: Frees up temporary storage and processing resources more rapidly for smaller updates. I believe this optimization would bring significant gains in terms of User Experience (UX) and the operational efficiency of the platform. Thank you for your attention and consideration. Sincerely,

I am learning how to use DNS-SD from swift and have created a basic CLI app, however I am not getting callback results. I can get results from cli. Something I am doing wrong here? dns-sd -G v6 adet.local 10:06:08.423 Add 40000002 22 adet.local. FE80:0000... dns-sd -B _adt._udp. 11:19:10.696 Add 2 22 local. _adt._udp. adet import Foundation import dnssd var reference: DNSServiceRef? func dnsServiceGetAddrInfoReply(ref: DNSServiceRef?, flags: DNSServiceFlags, interfaceIndex: UInt32, errorCode: DNSServiceErrorType, hostname: UnsafePointer<CChar>?, address: UnsafePointer<sockaddr>?, ttl: UInt32, context: UnsafeMutableRawPointer?) { print("GetAddr'd") print(hostname.debugDescription.utf8CString) print(address.debugDescription.utf8CString) } var error = DNSServiceGetAddrInfo(&reference, 0, 0, DNSServiceProtocol(kDNSServiceProtocol_IPv6), "adet.local", dnsServiceGetAddrInfoReply, nil) print("GetAddr: \(error)") func dnsServiceBrowseReply(ref: DNSServiceRef?, flags: DNSServiceFlags, interfaceIndex: UInt32, errorCode: DNSServiceErrorType, serviceName: UnsafePointer<CChar>?, regType: UnsafePointer<CChar>?, replyDomain: UnsafePointer<CChar>?, context: UnsafeMutableRawPointer?) { print("Browsed") print(serviceName.debugDescription.utf8CString) print(replyDomain.debugDescription.utf8CString) } error = DNSServiceBrowse(&reference, 0, 0, "_adt._udp", nil, dnsServiceBrowseReply, nil) print("Browse: \(error)") Foundation.RunLoop.main.run() Info.plist <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>NSLocalNetworkUsageDescription</key> <string>By the Hammer of Grabthor</string> <key>NSBonjourServices</key> <array> <string>_adt._udp.</string> <string>_http._tcp.</string> <string>_http._tcp</string> <string>_adt._udp</string> </array> </dict> </plist>

Hello, I am in a very similar situation as described in the thread: https://developer.apple.com/forums/thread/655183 Context: I am working on an app that receives data from a hardware device through its Wifi network, and the hardware is not connected to the internet. Now, I would need to call some API while still connected to hardware so I would need to use the cellular data. As mentioned on the thread, I can achieve this via Network framework, using the requiredInterfaceType property. But Is there any other way I can achieve this? I can also do some suggestion on the hardware if that's helpful. Thank you!

Hello, I'm trying to get a list of all network devices (device audit for DLP system). CFMutableDictionaryRef matchingDictionary = IOServiceMatching(kIONetworkControllerClass); if (matchingDictionary == nullptr) { std::cerr << "IOServiceMatching() returned empty matching dictionary" << std::endl; return 1; } io_iterator_t iter; if (kern_return_t kr = IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDictionary, &iter); kr != KERN_SUCCESS) { std::cerr << "IOServiceGetMatchingServices() failed" << std::endl; return 1; } io_service_t networkController; while ((networkController = IOIteratorNext(iter)) != IO_OBJECT_NULL) { std::cout << "network device: "; if (CFDataRef cfIOMACAddress = (CFDataRef) IORegistryEntryCreateCFProperty(networkController, CFSTR(kIOMACAddress), kCFAllocatorDefault, kNilOptions); cfIOMACAddress != nullptr) { std::vector<uint8_t> data(CFDataGetLength(cfIOMACAddress)); CFDataGetBytes(cfIOMACAddress, CFRangeMake(0, data.size()), data.data()); std::cout << std::hex << std::setfill('0') << std::setw(2) << (short)data[0] << ":" << std::hex << std::setfill('0') << std::setw(2) << (short) data[1] << ":" << std::hex << std::setfill('0') << std::setw(2) << (short) data[2] << ":" << std::hex << std::setfill('0') << std::setw(2) << (short) data[3] << ":" << std::hex << std::setfill('0') << std::setw(2) << (short) data[4] << ":" << std::hex << std::setfill('0') << std::setw(2) << (short) data[5]; CFRelease(cfIOMACAddress); } std::cout << std::endl; IOObjectRelease(networkController); } IOObjectRelease(iter); The Wi-Fi controller shows up in I/O Registry Explorer, but IOServiceGetMatchingServices() does not return any information about it. Any way to retrieve Wi-Fi controller info in daemon code? Thank you in advance!

This happens when trying to connect to my development web server. The app works fine when connecting to my production server. The production server has a certificate purchased from a CA. My development web server has a locally generated certificate (from mkcert). I have dragged and dropped the rootCA.pem onto the Simulator, although it doesn't indicate it has been loaded the certificate does appear in the Settings app and is checked to be trusted. I have enabled "App Sandbox" and "Outgoing connections (Client)". I have tested the URL from my local browser which is working fine. What am I missing?

We have a Java application built for macOS. On the first launch, the application prompts the user to allow local network access. We've correctly added the NSLocalNetworkUsageDescription key to the Info.plist, and the provided description appears in the system prompt. After the user grants permission, the application can successfully connect to a local server using its hostname. However, the issue arises after the system is rebooted. When the application is launched again, macOS does not prompt for local network access a second time—which is expected, as the permission was already granted. Despite this, the application is unable to connect to the local server. It appears the previously granted permission is being ignored after a reboot. A temporary workaround is to manually toggle the Local Network permission off and back on via System Settings > Privacy & Security, which restores connectivity—until the next reboot. This behavior is highly disruptive, both for us and for a significant number of our users. We can reproduce this on multiple systems... The issues started from macOS Sequoia 15.0 By opening the application bundle using "Show Package Contents," we can launch the application via "JavaAppLauncher" without any issues. Once started, the application is able to connect to our server over the local network. This seems to bypass the granted permissions? "JavaAppLauncher" is also been used in our Info.plist file Removing the following plist in Recovery Mode seems to resolve the issue rm "/Volumes/Macintosh HD/Library/Preferences/com.apple.networkextension.plist" Is this safe to do?

Question: What is the standard, most reliable way to manage temporary files associated with a URLSessionDownloadTask that has been terminated abnormally due to a network error or other issues? Details Hello, I'm currently developing a feature to download multiple files concurrently on iOS using URLSessionDownloadTask, and I have a question regarding the lifecycle of the temporary files created during this process. As I understand it, URLSessionDownloadTask stores incoming data in a temporary file within the tmp directory, typically with a name like CFNetworkDownload_*.tmp. In my testing, temporary files are managed correctly in the normal scenario. For instance, when I call the cancel() method on an active downloadTask and then release all references to it, the corresponding temporary file is automatically cleaned up from the tmp directory shortly after. However, the problem occurs when a download is interrupted abnormally due to external factors, such as a lost network connection. In this situation, the urlSession(_:task:didCompleteWithError:) delegate method is called, but the associated temporary file is not deleted and remains in the tmp directory. I've observed a particularly interesting behavior related to this. Immediately after the error occurs, if I check my app's storage usage in the iOS Settings app, the data size appears to have decreased momentarily. However, the tmp file has not actually been deleted, and after a short while, the storage usage is recalculated to include the size of this orphaned temporary file. Since my app does not support resuming interrupted downloads, these leftover files become orphaned and unnecessarily consume storage. Therefore, I want to ensure they are all reliably deleted. With this context, I'd like to ask the community: What is the standard, most reliable way to manage temporary files associated with a URLSessionDownloadTask that has been terminated abnormally due to a network error or other issues? I am wondering if there is an official guide or a framework-level API to handle these orphaned files. I would appreciate any advice from those with experience in this area. Thank you.

Hi, I’m trying out my app with Xcode 26, running on an iOS 26 simulator. I'm having issues with URLSessions, it crashes when I set the URLSessionConfiguration to default, and if I don’t use the URLSessionConfiguration, it crashes if I use URLSession.shared. When running in a real device, it doesn't crash, but any network request will hang and time out after a while. Is it a known issue in the latest beta versions?

Did iOS 18.4 ( and 18.5) with iPhone 14 or 15 introduce new network connectivity or battery optimization policies that would break Local Push Connectivity? (suspend PushProvider in a new way that prevents it from listening and reponding to incoming messages from private network server)? We have a private app using local push connectivity for real time local alerts on a local private network & server. The current application version works on prev devices including iPhone 12, iOS 14-18.1 that we know of. A new(er) installation with iPhone 14s & 15s on iOS 18.4 is having new connectivity problems that seem to occur along with sleep. Previously NEAppPushProvider could listen and reply to incoming messages from server for local notifications, incoming sip invites, and connection health messages. We'll be performing addtional testing to narrow the issue in the meantime, but it would be VERY helpful to have clarification regarding any iOS minor patches since 18.1 that are now breaking existing Local Push Connectivity applications. If so what are the recommendations or remedies. Are known issues with Network Extensions patched in 18.5? Are existing applications expected to redesign their networking solutions for 18.3 & 18.4? Did iOS18 versions later than 18.1 begin requiring new entitlements or exceptions for private apps in app store?

We have a Java application built for macOS. On the first launch, the application prompts the user to allow local network access. We've correctly added the NSLocalNetworkUsageDescription key to the Info.plist, and the provided description appears in the system prompt. After the user grants permission, the application can successfully connect to a local server using its hostname. However, the issue arises after the system is rebooted. When the application is launched again, macOS does not prompt for local network access a second time—which is expected, as the permission was already granted. Despite this, the application is unable to connect to the local server. It appears the previously granted permission is being ignored after a reboot. A temporary workaround is to manually toggle the Local Network permission off and back on via System Settings &gt; Privacy &amp; Security, which restores connectivity—until the next reboot. This behavior is highly disruptive, both for us and for a significant number of our users. We can reproduce this on multiple systems... The issues started from macOS Sequoia 15.0 By opening the application bundle using "Show Package Contents," we can launch the application via "JavaAppLauncher" without any issues. Once started, the application is able to connect to our server over the local network. This seems to bypass the granted permissions? "JavaAppLauncher" is also been used in our Info.plist file

CarPlay woes. I think it's unacceptable that it silently kills an ongoing WiFi connection that has been established using ASAccessoryKit and NEHotspotHelper which is in active use. This is responsible for angry clients because their processes break a lot when they are in reach of the connected car. (And yes, they have to be in the reach of the car, because it is a diagnostic/maintenance app for cars…) Do I really need to ask my clients to unpair from CarPlay before using our app or is there another way?

Problem : Connection error occurs in iOS26 beta while connecting to the device's softap via commercial app (Socket exception errSSLfeerBadCert CFSreamErrorDomainSSL code -9825). iOS 18 release version does not occur. Why does it cause problems? Does the iOS 26 version not cause problems? Is there a way to set it up in the app so that the iOS 26 beta doesn't cause problems? error : "alias":"SOCKET_LOG", "additional":{"currentNetworkStatus":"socket e=errSSLPeerBadCert ns WifiStatus: Connected Error Domain kCFStreamErrorDomainSSL Code-9825 "(null)" UserInfo={NSLocalizedRecoverySuggestion=Error code definition can be found in Apple's SecureTransport.h} Description : It's an issue that happens when you connect our already mass-produced apps to our home appliances (using SoftAP), and it's currently only happening in iOS 26 beta. This particular issue didn't appear until iOS 18 version. Let me know to make sure that this issue will persist with the official release of iOS 26? If the issue continues to occur with the official version, would you share any suggestions on how to mitigate or avoid it. Also, it would be helpful to find out if there are known solutions or processes such as exemptions to fix this issue.

Here's what the documentation says https://developer.apple.com/documentation/networkextension/maintaining-a-reliable-network-connection Confirm that your NEAppPushProvider implementation doesn’t create a retain cycle with itself. After you call the completionHandler that the system passes to stop(with:completionHandler:), the Network Extension framework releases your NEAppPushProvider instance. This instance typically deallocates from memory when released, but if the instance has a retain cycle with itself, it fails to deallocate and wastes memory. Failure to deallocate can also cause the system to have two or more instances of your push provider, leading to inconsistent behavior. Use Instruments or add a logging statement to deinit to verify that your NEAppPushProvider deinitializes when expected. I observe that when I turn off the wifi, the AppPushProvider subclass fully deinitializes. But when I call removeFromPreferences on the NEAppPushManager from the app, it calls stop() on my AppPushProvider subclass, but it does not initialize. Should I be alarmed by this behavior? Will this cause a memory leak? Will this cause multiple Extension/AppPushProviders to be operating concurrently? For testing, I've removed everything except for logs and some singleton calls. No closures capturing self, and no strong references of self being passed anywhere. I am also not using the debugger, and am using the console to debug.

I've just watched Scott Herschel's WWDC 25 session "Use structured concurrency with Network framework" and I am more than overjoyed to see said framework offer these new features. However, the documentation has not yet been updated (or it's not where I expect to find it) .. Is there more that I can read about the enhancements to the framework? One specific question is whether the structured concurrency portion of the framework's enhancement is backward compatible to before "26"?