Hi everyone, I'm developing a visionOS app that allows users to download large video files (similar to a movie download experience, with each file being around 10 GB). I've successfully implemented the core video download functionality using URLSession, and everything works as expected while the app is active. Now, I’m looking to support background downloading. Specifically, I want users to be able to start a download and then leave the app (e.g., switch apps or return to the home screen) while the download continues in the background. Additionally, I’d like to confirm a specific scenario: If the user starts a download, then removes the headset (keeping the device turned on and connected to power), will the download continue in the background? Or does visionOS suspend the app or downloads in this case? I’m considering using a background URLSessionConfiguration (as done in iOS/macOS) to enable this behavior, but I’m not sure if it behaves the same way on visionOS or if there are special limitations or best practices when handling large downloads on this platform. Any insights or official guidance would be greatly appreciated! Thanks!

I upgraded my Mac to Sequoia 15.4.1 an i hat to upgrade XCode to Version 16.3. I access a MQTT Broker by an sending an mosquitto_sub request to the Broker. Now its no longer possible the request fails i granted Network permission to my App

CFNetwork None CFURLResponseGetRecommendedCachePolicy None 0 CFNetwork None CFHTTPCookieStorageUnscheduleFromRunLoop None 0 CFNetwork None /_/_CFNetworkAgentMessageProcessorMain None 0 CFNetwork None CFURLDownloadCancel None 0 CFNetwork None CFURLDownloadCancel None 0 libdispatch.dylib None /_dispatch/_block/_async/_invoke2 None We've observed intermittent crashes in our production environment, exclusively affecting customers running macOS 10.15 and 11. The crash logs consistently show a stack trace involving CFHTTPCookieStorageUnscheduleFromRunLoop and CFURLDownloadCancel within the CFNetwork framework. This suggests potential issues with cookie storage management and/or URL download cancellation. Could the team please analyze these crash logs and provide insights into: The root cause of the crashes. Potential race conditions or synchronization issues. Recommendations for mitigating or resolving the problem. Your assistance in resolving this issue is greatly appreciated."

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!

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?

I am trying to connect an iPhone 16 (iOS 18.3) to a Wi-Fi device with the SSID "DIRECT-DR_6930_KP201128", but every time, without being able to enter the Wi-Fi password, the message "Unable to join the network 'DIRECT-DR_6930_KP201128'" is displayed. Below are the system logs from the connection failure. Could you please tell me the cause of the connection failure? By the way, an iPhone SE 2nd (iOS 18.2.1) can connect to the same Wi-Fi device without any issues. System Logs: ・Jan 31 19:18:14 900-iPhone-16-docomo Preferences(WiFiKit)[351] : {ASSOC-} association finished for DIRECT-DR_6930_KP201128 - success 0 ・Jan 31 19:18:14 900-iPhone-16-docomo runningboardd(RunningBoard)[33] : Assertion 33-351-4412 (target:[app<com.apple.Preferences(DE1AB487-615D-473C-A8D6-EAEF07337B18)>:351]) will be created as inactive as start-time-defining assertions exist ・Jan 31 19:18:14 900-iPhone-16-docomo Preferences(WiFiKit)[351] : association failure: (error Error Domain=com.apple.wifikit.error Code=12 "Unknown Error" UserInfo={NSDebugDescription=Unknown Error, NSUnderlyingError=0x303307660 {Error　Domain=com.apple.corewifi.error.wifid Code=-3938 "(null)"}}) ・Jan 31 19:18:14 900-iPhone-16-docomo Preferences(WiFiKit)[351] : dismissing credentials view controller for DIRECT-DR_6930_KP201128

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 am looking for a lightweight server that can run inside an app. The key requirement is that it must support local IP communication over HTTPS. I have searched Google and found several frameworks, but as far as I know, support for HTTPS in this environment has been discontinued or is no longer available. If anyone knows a solution that meets these criteria, I would greatly appreciate your guidance. Thank you in advance!😀

We've observed intermittent crashes in our production environment, pls help to take a look at this, thx

I'm facing an issue where if a WiFi network is turned off and back on within a short time frame (2-4 seconds), iOS still shows the device as connected but does not send a new DHCP request. This causes a problem for my network device, which relies on the DHCP request to assign an IP address. Without the request, the device is unable to establish a socket connection properly. Is there any way to force iOS to send a DHCP request immediately when reconnecting to the network in this scenario? Are there any known workarounds or configurations that might help ensure the DHCP process is re-triggered? Any insights would be appreciated. Thanks!

We use Boost ***** (1.86.0) for WebSockets in an iOS application using a self-signed certificate. The ***** WebSocket client works fine on iOS 18.1 and every other OS (Windows, Android, Linux, etc...) but not iOS 18.3.1 and possibly versions before 18.3.1 but later than iOS 18.1. Has anyone else ran into this issue and how did you resolve? What could have changed after iOS 18.1 that would prevent a WSS Websocket from connecting that works fine on iOS 18.1?

Hi we want to use CONNECT-IP extension within the MASQUE protocol suite. we want to be able to reroute ICMP packets from our machine and redirect them to our MASQUE proxy. we want to avoid a creation of virtual interface or modifying the routing tables. is it possible, if so, how can it be achieved. thanks

I develop a terminal app with c++. Everything was fin until i upgraded to Sequoia. If i debug my program with Xcode, all requests to a local network like MQTT fails. How can i grant XCODE the privilege to access the local network?

I've had no problem running my app in a simulator or on a device, but today my app is failing on a URLRequest to my local machine (in a sim). From the same simulator I can go to Safari and manually enter the URL that the app is using (and that appears in the error message), and it works fine. I think there was a recent Xcode update; did something change in this regard?

Feedback Ticket: FB13812251 Problem Statement: We are currently facing internet connectivity issue with our VPN application where we try to disconnect the VPN from the Packet Tunnel Network Extension using - (void)cancelTunnelWithError:(nullable NSError *)error. Which API to use to disconnect the VPN from Packet Tunnel as VPN app is not running such that device retains its internet connectivity as soon as VPN disconnects. Configuration: We have configured PacketTunnelProvider with the following settings: (NETunnelProviderManager *)tunnelProvider.protocolConfiguration.includeAllNetworks = YES; (NETunnelProviderManager *)tunnelProvider.protocolConfiguration.excludeLocalNetworks = NO; (NETunnelProviderManager *)tunnelProvider.protocolConfiguration.enforceRoutes = NO; These settings are applied from the VPN app and allow us to successfully establish a VPN connection, with all traffic being routed through the tunnel as expected.We are setting above properties to address local net attack. Issue we are facing: However, we encounter a problem when we attempt to disconnect the VPN from. When we call the following method from PacketTunnel network extension: (void)cancelTunnelWithError:(nullable NSError *)error Upon calling this method, the VPN disconnects as expected, but the device loses all internet connectivity and is unable to access any resources. This is not the desired behavior. Observation : Interestingly, when we call the following method from the app side. The VPN disconnects and the device retains its internet connectivity. [enabledConfig.connection stopVPNTunnel]; We would like to achieve the same behavior when disconnecting the VPN from the Network Extension. So we are looking for an API that could be called from NE without causing any internet connectivity issue. Any guidance on how to resolve this issue would be greatly appreciated.

We are migrating our iOS app to macOS. On iOS, it works fine. But when I try and run on macOS and connect to the VPN, I am getting an error like failed to fetch /Users/stuart/Library/Developer/Xcode/DerivedData/app-byzvshkqegwzqxgervfswmsughkm/Build/Products/Debug/<app_name>.app/Contents/PlugIns/<network_extension_name>.appex/Contents/_CodeSignature/CodeRequirements-1 error=-10. If I have Settings -> VPN open, it rapidly is connecting and disconnecting. Is there anything I need to do specific to macOS to make this work? Or is this related to a broken code signature? Thanks in advance!

Hi there, I'm trying to build a MacOS VPN application from scratch. My VPN application is slightly from normal ones, It will include an authentication token and underlying process information (pid, application path etc.) in each connection made to the VPN gateway. Consider it a poor man's zerotrust implementation. NetworkExtension and PacketTunnel is a must, thus to retrieve process information via audit tokens. However, I'm unable to find any working examples that can be built on MacOS 15.X. I tried to open an TSI case but didn't receive anything useful. Anyone?

I was trying to call getsockopt(fd, SOL_LOCAL, LOCAL_PEERCRED, ...), and by mistake passed a wrong value for the second parameter where it should be SOL_LOCAL. But the call still succeeded. Then I did more experiments and passed more random values for the second parameter, all succeeded. It seems there is a lack of parameter check in the implementation of getsockopt() , where it should return errors if people pass invalid parameters instead of succeeding silently. Hope the Apple engineers can help to validate and fix it.

Hello, I'm developing a Transparent Proxy and I noticed that the Network Extension Framework logs in the Unified Logging System when my profile receives a flow, its source application, its destination endpoint, and my profile's decision regarding that flow. I worry that this may compromise the user's privacy. So is there a way that I can turn off these logs at least in Distribution Configurations?

hi everybody, When I use the following code to connect to WiFi network, an error message of "error=null" or "error='Error Domain=NEHotspotConfigurationErrorDomain Code=11 "" UserInfo={NSLocalizedDescription=}' " will occur. It has been uploaded to Feedback. Feedback ID： FB16819345 (WiFi-无法加入网络) NEHotspotConfiguration *hotspotConfig = [[NEHotspotConfiguration alloc] initWithSSID:ssid passphrase:psk isWEP:NO]; [[NEHotspotConfigurationManager sharedManager] applyConfiguration:hotspotConfig completionHandler:^(NSError * _Nullable error) { }];