plateform: iPadOS 16.3.1 xcode:15.2 code: self.queue = Queue() self.monitor = NWPathMonitor() self.monitor.pathUpdateHandler = { [weak self] path in queue.async { } }

Is it possible using the network framework to retrieve the list of certificates presented by the host alone, and not the reconstructed chain assembled by the system? For example, in OpenSSL one can call SSL_get_peer_cert_chain which will return exactly this - a list of the certificates presented by the server. This is useful for when you may want to manually reconstruct the chain, or if the server is misconfigured (for example, is missing an intermediate cert). Is something like this possible with the network framework? If I connect to a host that I know only returns 1 certificate, the trust ref already has the reconstructed chain by the time my code is called: sec_protocol_options_set_verify_block(tlsOptions.securityProtocolOptions, { metadata, trustRef, verifyComplete in let trust = sec_trust_copy_ref(trustRef).takeRetainedValue() let numberOfCertificates = SecTrustGetCertificateCount(trust) // Returns 3 even though the server only sent 1

I would like to develop a macOS app that would automatically switch Network Locations based on certain criteria. I want to publish this on the Mac App Store, but I'm unsure if this functionality is permitted. I've searched through the App Store Review Guidelines and documentation on NetworkExtension and SystemConfiguration frameworks, but I haven't found clear information on whether: Programmatically changing Network Locations is allowed in sandboxed App Store apps What specific entitlements would be required If there are any API-approved ways to do this without shell commands I'd like to avoid investing significant development time if this type of functionality would ultimately be rejected. As a relatively new Apple platform developer, any guidance on: The appropriate frameworks/APIs to use Required entitlements Whether this functionality is even permitted for App Store distribution would be incredibly helpful. Thank you in advance for any insights!

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!

I want to configure one aspect of my networking configuration (the QUIC keepalive interval). This only seems to be configurable via Network.framework’s nw_quic_set_keepalive_interval. Is there any way to apply this to a URLSession? Or do I need to implement the whole connection management myself using Network.framework?

I'm working on a game that uses NWBrowser and NWListener to create a connection between an iOS and tvOS app. I've got the initial networking up and running and it works perfectly when running in the simulator(s). However, when I run on-device(s), I've found that browseResultsChangedHandler gets called multiple times for what is ostensibly the same service. My browser handler (which runs on iOS) looks like this: browser.browseResultsChangedHandler = { [weak self] results, changes in if let result = browser.browseResults.first { self?.onPeerConnected?(PeerConnection(endpoint: result.endpoint)) } } The first time it gets called, the interface in the NWBrowser.Result is en0, but the 2nd time it gets called, it is en0 AND awdl0. Because my current handling is so naive, this re-invocation ends up with two connections being made to the remote server (the Apple TV). Now, I know that this handler, by its very name, is designed to be called multiple times as things change, so I'm curious as to what strategies I might employ here. Is there any value in tearing down any previous connections and re-connecting using the latest one? Should I just kill the browser as soon as I handle the first one? Just ignore subsequent ones? I'm sure that, to a degree, the answer is probably "it depends"... but I'm curious to see if there might be at least some high-level strategies like "whatever you do, don't do xxxx" or "most apps do yyyy" :-) Thanks.

NEFilterManager.shared().loadFromPreferences { loadError in DispatchQueue.global.async { ... } } the code above is executed in an app-like deamon and completionHandler was never invoked, same code in an application works fine.(they are both packed with content filter network system extension) is it because of the restriction of app-like deamon?

I am writing to seek clarification on two technical issues related to iOS frameworks (CoreBluetooth and NetworkExtension). These observations are critical for optimizing our app's performance, and I would appreciate any official guidance or documentation references. CoreBluetooth Scanning Frequency and Cycle Issue: We noticed inconsistent BLE device discovery times (ranging from 0.5s to 1.5s) despite the peripheral advertising at 2Hz (500ms interval). Questions: Does iOS regulate the BLE scan interval or duty cycle internally? If yes, what factors affect this behavior (e.g., foreground/background state, connected devices)? Are there recommended practices to reduce discovery latency for peripherals with fixed advertising intervals? Is there a way to configure scan parameters (e.g., scan window/interval) programmatically, similar to Android's BluetoothLeScanner? Test Context: Device: iPhone 13 mini (iOS 17.6.1) Code: CBCentralManager.scanForPeripherals(withServices: nil, options: [CBCentralManagerScanOptionAllowDuplicatesKey: true]) NEHotspotConfigurationManager Workflow and Latency Issue: Using NEHotspotConfigurationManager.shared.apply(_:) to connect to Wi-Fi occasionally takes up to 8 seconds to complete. Questions: What is the internal workflow of the apply method? Does it include user permission checks, SSID scanning, authentication, or IP assignment steps? Are there known scenarios where this method would block for extended periods (e.g., waiting for user interaction, network timeouts)? Is the latency related to system-level retries or radio coexistence with other wireless activities (e.g., Bluetooth)? Test Context: Configuration: NEHotspotConfiguration(ssid: "TestSSID") Behavior: Delay occurs even when the Wi-Fi network is in range and credentials are correct.

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?

I am writing to seek clarification on two technical issues related to iOS frameworks (CoreBluetooth and NetworkExtension). These observations are critical for optimizing our app's performance, and I would appreciate any official guidance or documentation references. CoreBluetooth Scanning Frequency and Cycle Issue: We noticed inconsistent BLE device discovery times (ranging from 0.5s to 1.5s) despite the peripheral advertising at 2Hz (500ms interval). Questions: Does iOS regulate the BLE scan interval or duty cycle internally? If yes, what factors affect this behavior (e.g., foreground/background state, connected devices)? Are there recommended practices to reduce discovery latency for peripherals with fixed advertising intervals? Is there a way to configure scan parameters (e.g., scan window/interval) programmatically, similar to Android's BluetoothLeScanner? Test Context: Device: iPhone 13 mini (iOS 17.6.1) Code: CBCentralManager.scanForPeripherals(withServices: nil, options: [CBCentralManagerScanOptionAllowDuplicatesKey: true]) NEHotspotConfigurationManager Workflow and Latency Issue: Using NEHotspotConfigurationManager.shared.apply(_:) to connect to Wi-Fi occasionally takes up to 8 seconds to complete. Questions: What is the internal workflow of the apply method? Does it include user permission checks, SSID scanning, authentication, or IP assignment steps? Are there known scenarios where this method would block for extended periods (e.g., waiting for user interaction, network timeouts)? Is the latency related to system-level retries or radio coexistence with other wireless activities (e.g., Bluetooth)? Test Context: Configuration: NEHotspotConfiguration(ssid: "TestSSID") Behavior: Delay occurs even when the Wi-Fi network is in range and credentials are correct.

We're encountering an issue with our Network Extension (utilizing NEPacketTunnelProvider and NETransparentProxy) on macOS 14.5 (23F79). On some systems, the VPN fails to automatically start after a reboot despite calling startVPNTunnel(). There are no error messages. Our code attempts to start the tunnel: ....... do { try manager.connection.startVPNTunnel() Logger.default("Started tunnel successfully") } catch { Logger.error("Failed to launch tunnel") } ...... System log analysis reveals the tunnel stopping due to userLogout (NEProviderStopReason(rawValue: 12)) during reboot. However, the Transparent Proxy stops due to userInitiated (NEProviderStopReason(rawValue: 1)) for the same reboot. We need to understand: Why the VPNTunnel isn't starting automatically. Why the userLogout reason is triggered during reboot. Additional Context: We have manually started the VPN from System Settings before reboot.

I am adopting Swift Concurrency in my network extension app to use Swift 6 protections. In the UI app I ended up with most of the app marked as MainActor, so that pieces of my app can keep seamless access to each other and at the same time have thread safe access. When it comes to my network extension, does it make sense to also mark most of the code as MainActor for the purposes of thread safety and seamless access of most classes to each other? I have doubts, because MainActor sounds like it should be a UI think, but network extension has no UI Of course any long or blocking operations would not be MainActor

Case-ID: 10969723 （Due to privacy concerns, I have hidden part of the URL and included the complete plain text in the email demo project with Case-ID: 10969723） After our game was launched in Japan, a small number of Japanese users reported that they were unable to enter the game. After our investigation, we confirmed that the request under the yfy-api-oversea.xxxxxxxxxxxxxx.com domain name failed. iOS NSURLSession API returns the following error: Error Domain=NSURLErrorDomain Code=-1000 "無効なURL" UserInfo={_kCFStreamErrorCodeKey=22, NSUnderlyingError=0x3019e8030 {Error Domain=kCFErrorDomainCFNetwork Code=-1000 "(null)" UserInfo={_NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: en0[802.11], ipv4, ipv6, dns, proxy, uses wifi, _kCFStreamErrorCodeKey=22, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask .<7>, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask .<7>" ), NSLocalizedDescription=無効なURL, NSErrorFailingURLStringKey=https://yfy-api-oversea.xxxxxxxxxxxxxx.com/init/info?channel_code=jpxxxxxxxxxxxxxxios&timestamp=1735012505&sign=1617e4cf88b58df2aa90a6b3985a8ac2&game_code=XXXXX, NSErrorFailingURLKey=https://yfy-api-oversea.xxxxxxxxxxxxxx.com/init/info?channel_code=jpxxxxxxxxxxxxxxios&timestamp=1735012505&sign=1617e4cf88b58df2aa90a6b3985a8ac2&game_code=XXXXX, _kCFStreamErrorDomainKey=1}。 We have tried various methods but cannot reproduce this error (Code=-1000). I can provide the following clues： 1、We have checked the server and confirmed that the request did not reach the server, but was intercepted by the iOS client and was not sent. 2、This problem does not seem to have much to do with the iOS system version. The system versions where the problem occurred are widely distributed: 17.2.1、17.7.1、17.5.1、17.6.1、17.7、18.0.1、18.1、18.1.1 e.g. 3、This problem seems to have nothing to do with the device model. The following models have experienced problems: iPhone16、iPhone 16 Pro、iPhone 14、iPhone 14 Plus、iPhone 14 Pro Max、iPhone 13、iPhone11 e.g. 4、By tracking the logs, some users who encountered the problem later recovered and the problem did not occur again（The user IP and iOS system restored by yourself have not changed）. However, this problem persists for some users. Even if the iOS system is upgraded to the latest version, there are still problems. 5、The following two IPs are the IPs of users who encountered this problem (1.73.13.210, 153.252.131.136). But this problem seems to have nothing to do with IP. For some users who restored themselves, their IPs did not change, but the problem no longer occurred. 6、This problem seems to only occur in Japan. Mainland China, Taiwan, and Hong Kong have never encountered this situation. 7、It doesn't seem to have anything to do with GET requests. Another login request（https://yfy-api-oversea.xxxxxxxxxxxxxx.com/login/c/place）uses a POST request and will also encounter this error. 8、I wonder if it has something to do with the two symbol "-" in the domain name? I checked Apple documentation and searched online, but couldn't find any more information. This problem cannot be reproduced either. Only technical requests can be initiated. I provided a demo project(see email for Case-ID: 10969723) Thanks.

In TN3179 under "macOS considerations" there are a set of instances where local network privacy does not apply: macOS automatically allows local network access by: Any daemon started by launchd Any program running as root Command-line tools run from Terminal or over SSH, including any child processes they spawn I am running some tests in my app that use the local network, attempting to run them from both the terminal app and from a VScode terminal and I am getting permissions prompts. After allowing these pop ups, some of the tests still fail as if networking was blocked.

I am developing an App based on Network Extension that lets all network requests on device access the Internet through a private Relay. I created an empty iOS App and only the entitlements file and ViewController.swift(Main.storyboard) file have been modified. The code was copied from the official video https://developer.apple.com/videos/play/wwdc2023/10002/ But, running the App on iPhone, the saveToPreferences API reported Error Domain=NERelayErrorDomain Code=3 "(null)" and the App doesn't look like it's changed at all (it doesn't jump to the Settings - VPN&Relay). Does anyone know why？Any reply would be greatly appreciated. The contents of the entitlements file: <?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>com.apple.developer.networking.networkextension</key> <array> <string>relay</string> </array> </dict> </plist> ViewController.swift: import UIKit import NetworkExtension class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. } @IBAction func tap(_ sender: Any) { let newRelay = NERelay() let relayURL = URL(string: "https://relay.example.com:443/") newRelay.http3RelayURL = relayURL newRelay.http2RelayURL = relayURL newRelay.additionalHTTPHeaderFields = ["Authorization" : "PrivateToken=123"] let manager = NERelayManager.shared() manager.relays = [newRelay] manager.matchDomains = ["internal.example.com"] manager.isEnabled = false manager.saveToPreferences { err in print(err) } } }

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) { }];

Title: Loss of Internet Connectivity on iOS Device When Packet Tunnel Crashes Feedback ticket: https://feedbackassistant.apple.com/feedback/14162605 Product: iPhone 12 Version: iOS - 17.5.1 Configuration: NETunnelProviderManager Configuration Description: We are developing an iOS VPN client and have configured our packet tunnel provider according to Apple's guidelines. The configuration is as follows: includeAllNetworks = YES excludeLocalNetworks = NO enforceRoutes = NO This setup works as expected when the VPN successfully connects. However, we encounter a blocker issue where the device loses internet connectivity if the packet tunnel crashes. Steps to Reproduce: Configure the NETunnelProviderManager with the above settings. Connect the VPN, which successfully establishes a connection. Verify that resources are accessible and internet connectivity is functional. Packet tunnel to crash unexpectedly.Observe that the NE process (Packet Tunnel) restarts automatically, as expected and attempts to reconnect the VPN; however, the device now lacks internet connectivity, preventing VPN reconnection. Try accessing resources using Safari or any other internet-dependent app, resulting in an error indicating the device is not connected to the internet. Actual Results: The device loses internet connectivity after the packet tunnel crashes and fails to regain it automatically, preventing the VPN from reconnecting. Expected Results: The device should maintain internet connectivity or recover connectivity to allow the VPN to reconnect successfully after the packet tunnel process restarts. Workaround - iPhone device needs a restart to regain internet connectivity .

I'm simply trying to use a proxy to route a http request in Swift to measure the average round trip time of a list of proxies. I've went through multiple Stack Overflow threads on this topic but they are all super old / outdated. format:host:port:username:password I also added the info.plist entry: NSAllowsArbitraryLoads -&gt; NSExceptionDomains When I call the function below I am prompted with a menu that says "Proxy authentication required. Enter the password for HTTP proxy ... in settings" I closed this menu inside my app and tried the function below again and it worked without giving me the menu a second time. However even though the function works without throwing any errors, it does NOT use the proxies to route the request. Why does the request work (throws no errors) but does not use the proxies? I'm assuming it's because the password isn't entered in the settings as the alert said. My users will want to test proxy speeds for many different Hosts/Ports, it doesn't make sense to enter the password in settings every time. How can I fix this issue? func averageProxyGroupSpeed(proxies: [String], completion: @escaping (Int, String) -&gt; Void) { let numProxies = proxies.count if numProxies == 0 { completion(0, "No proxies") return } var totalTime: Int64 = 0 var successCount = 0 let group = DispatchGroup() let queue = DispatchQueue(label: "proxyQueue", attributes: .concurrent) let lock = NSLock() let shuffledProxies = proxies.shuffled() let selectedProxies = Array(shuffledProxies.prefix(25)) for proxy in selectedProxies { group.enter() queue.async { let proxyDetails = proxy.split(separator: ":").map(String.init) guard proxyDetails.count == 4, let port = Int(proxyDetails[1]), let url = URL(string: "http://httpbin.org/get") else { completion(0, "Invalid proxy format") group.leave() return } var request = URLRequest(url: url) request.timeoutInterval = 15 let configuration = URLSessionConfiguration.default configuration.connectionProxyDictionary = [ AnyHashable("HTTPEnable"): true, AnyHashable("HTTPProxy"): proxyDetails[0], AnyHashable("HTTPPort"): port, AnyHashable("HTTPSEnable"): false, AnyHashable("HTTPUser"): proxyDetails[2], AnyHashable("HTTPPassword"): proxyDetails[3] ] let session = URLSession(configuration: configuration) let start = Date() let task = session.dataTask(with: request) { _, _, error in defer { group.leave() } if let error = error { print("Error: \(error.localizedDescription)") } else { let duration = Date().timeIntervalSince(start) * 1000 lock.lock() totalTime += Int64(duration) successCount += 1 lock.unlock() } } task.resume() } } group.notify(queue: DispatchQueue.main) { if successCount == 0 { completion(0, "Proxies Failed") } else { let averageTime = Int(Double(totalTime) / Double(successCount)) completion(averageTime, "") } } }

I'm using the NEHotspotConfigurationManager class, with joinOnce = false, to connect to a Wi-Fi network that lacks internet access (IoT device). After restarting my iPhone, the first connection to this network disconnects automatically in less than a minute. All subsequent connections remain stable without disconnecting. What could be causing this?

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?