Configure the App ID in the Apple Developer Portal. In the Network Extensions section, the Packet Tunnel section is not displayed
How to proceed with the configuration of App ID. In the Network Extensions section: Display the Packet Tunnel section
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Networking
RSS for tagExplore the networking protocols and technologies used by the device to connect to Wi-Fi networks, Bluetooth devices, and cellular data services.
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Hello,
I have a question about developing an iOS app for general public. Can such an app use DNS Proxy Provider?
The TN3134: Network Extension provider deployment article states that DNS Proxy Provider has the following restriction: "per-app on managed devices".
Does this imply that a DNS Proxy Provider that can be used in a regular iOS App Store app?
On the other hand, NEDNSProxyProvider only works with NEAppProxyFlow, is it possible to make it NOT per-app?
I have few API's written with URLSession. Will they work in Carrier-constrained network / satellite mode ?
Hi, I am making a AI-Powered app that makes api requests to the openai API. However, for security, I set up a vercel backend that handles the API calls securely, while my frontend makes a call to my vercel-hosted https endpoint. Interestingly, whenever I try to make that call on my device, an iPhone, I get this error:
Task <91AE4DE0-2845-4348-89B4-D3DD1CF51B65>.<10> finished with error [-1003] Error Domain=NSURLErrorDomain Code=-1003 "A server with the specified hostname could not be found." UserInfo={_kCFStreamErrorCodeKey=-72000, NSUnderlyingError=0x1435783f0 {Error Domain=kCFErrorDomainCFNetwork Code=-1003 "(null)" UserInfo={_kCFStreamErrorDomainKey=10, _kCFStreamErrorCodeKey=-72000, _NSURLErrorNWResolutionReportKey=Resolved 0 endpoints in 3ms using unknown from query, _NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: pdp_ip0[lte], ipv4, ipv6, dns, expensive, uses cell}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <91AE4DE0-2845-4348-89B4-D3DD1CF51B65>.<10>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <91AE4DE0-2845-4348-89B4-D3DD1CF51B65>.<10>"
), NSLocalizedDescription=A server with the specified hostname could not be found., NSErrorFailingURLStringKey=https://[my endpoint], NSErrorFailingURLKey=https://[my endpoint], _kCFStreamErrorDomainKey=10}
I'm completely stuck because when I directly make https requests to other api's like openai's endpoint, without the proxy, it finds the server completely fine. Running my endpoint on terminal with curl also works as intended, as I see api key usages. But for some reason, on my project, it does not work. I've looked through almost every single post I could find online, but a lot all of the solutions are outdated and unhelpful.
I'm willing to schedule a call, meeting, whatever to resolve this issue and get help more in depth as well.
When I used the iPhone 11 to scan the wifi connection, the system reported an error,
‘’’
let config = NEHotspotConfiguration(ssid: name, passphrase: passwd, isWEP: false)
let manager = NEHotspotConfigurationManager()
manager.apply(config) { error in
}
’’’
NEHotspotConfigurationErrorDomain Code=8 “internal error.” , the only thins that fixes this issue it restarting the iPhone.
What is the reason for this and how to solve it?
Reference link:
https://developer.apple.com/forums/thread/111638
https://cloud.tencent.com/developer/ask/sof/114654981
I was wondering which is the preferred way to send a lot of data from sensors of the apple watch to server.
It is preferred to send small chucks to iphone and then to server or directly send bulk data to server from watch. How does it affect battery and resources from watch ?
Are there any triggers that I can use to ensure best data stream. I need to send at least once a day. Can I do it in background or do I need the user to have my app in the foreground ?
Thank you in advance
Topic:
App & System Services
SubTopic:
Networking
Tags:
WatchKit
Health and Fitness
Network
Apple Watch
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?
Simulator: iPhone 16 pro (iOS 26)
Minimum Deployments: iOS 16.0+, not iOS 17.
Here is the demo:
import SwiftUI
import NetworkExtension
struct ContentView: View {
private var monitor = NWPathMonitor()
var body: some View {
VStack {
Text("Hello, world!")
}
.task {
let _ = URLSession.shared
}
}
}
1) Blocked page UX
When a URL is blocked, the browser typically shows a generic error like “"Safari cannot open the page because it couldn’t load any data,” with no indication that the page was blocked by a policy.
Is there any plan to add an API that allows developers to present a custom “blocked” page or remediation action, similar to NEFilterControlProvider’s remediationMap?
Even a minimal hook (custom HTML, deep link, or support URL) would make the experience clearer for users.
2) Cross‑app link‑opening behavior
With a block rule in place, direct navigation in Safari is blocked as expected. However, tapping the same URL in a messaging app (e.g., WhatsApp) opens Safari - and the page loads, not blocked.
Repro steps:
Configure a URL Filter extension that blocks https://example.com.
Case A: Open a browser and type the URL in the address bar → blocked (expected).
Case B: Tap the same URL in WhatsApp (or another messenger) → a browser opens and the page loads (unexpected).
iOS version - 26.0
I am trying to intercept localhost connections within NETransparentProxyProvider system extension. As per NENetworkRule documentation
If the address is a wildcard address (0.0.0.0 or ::) then the rule will match all destinations except for loopback (127.0.0.1 or ::1). To match loopback traffic set the address to the loopback address.
I tried to add
NWHostEndpoint *localhostv4 = [NWHostEndpoint endpointWithHostname:@"127.0.0.1" port:@""];
NENetworkRule *localhostv4Rule = [[NENetworkRule alloc] initWithDestinationNetwork:localhostv4 prefix:32 protocol:NENetworkRuleProtocolAny];
in the include network rules. I tried several variations of this rule like port 0, prefix 0 and some others. But the provider disregards the rule and the never receives any traffic going to localhost on any port.
Is there any other configuration required to receive localhost traffic in NETransparentProxyProvider?
Apple's Wi-Fi Aware demo shows that pairing is required before establishing a connection. Is this pairing mandatory? Can Android devices pair with Apple devices? My Android device strictly supports Wi-Fi Aware 4.0 and I want to achieve interoperability with Apple devices.
Hello, we are developing hardware that needs to connect to an iPhone via Wi-Fi to send requests to a server. On Android, we have managed to create a programmatic local hotspot within the app to facilitate connection and improve the user experience.
On iOS, however, Personal Hotspot must be manually enabled from the system settings, and the user must manually enter the SSID and password, which significantly degrades the UX.
My questions are:
Is there a workaround, unofficial method, or private API to generate a local hotspot from an app on iOS, similar to what can be done on Android?
Is there an alternative within the MFi program or through specific frameworks to facilitate a quick and automatic connection between the hardware and the iPhone without relying on the manual Personal Hotspot?
Are there any best practices for improving the local Wi-Fi connection experience between an accessory and an iPhone in the absence of hotspot controls?
I would appreciate any guidance, experience, or resources that would help me better understand the feasible options in iOS for scenarios where fast and direct communication between hardware and mobile devices via Wi-Fi is required.
I was exploring the scenarios where an NWListener or NWConnection can be invalidated or reclaimed by the OS itself.
I came across the document TN2277: Networking and Multitasking, which discusses situations where iOS can reclaim the underlying socket descriptor.
The document states:
while the app is suspended the system may choose to reclaim resources out from underneath a network socket used by the app, thereby closing the network connection represented by that socket.
From this, I understand that when the app is in a suspended state, the OS may reclaim the socket descriptor.
My questions are:
In what scenarios does the OS not reclaim the socket descriptor while the app is suspended, and in which cases does it reclaim it?
When reclamation occurs, does the OS reclaim 'a' single NWListener/NWConnection, or does it reclaim 'all' NWListener/NWConnections opened by the application?
Thanks.
I have checked the storage space of my phone. There is still over a hundred gigabytes of space left. An error occurred when the app was checking the network interface status. The error message is as follows:Error : Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device" UserInfo={_NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <7DB1CBFD-B9BE-422D-9C9A-78D8FC04DC1B>.<76>, _kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=28, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <7DB1CBFD-B9BE-422D-9C9A-78D8FC04DC1B>.<76>" ), _NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: pdp_ip0[lte], ipv4, ipv6, dns, expensive, estimated upload: 65536Bps, uses cell}
While updating our test devices to iOS 26, we noticed that the connection between devices are flaky. Often when connecting to a Peer from a device running iOS 26 we can observe the invite coming through and when accepting said invite, both ends going to .connecting state and a while later going back to .notConnected within the peer(_ peerID: MCPeerID, didChange state: MCSessionState) function. This happens regularly and retrying the invitation process several times usually resolves it. Do anyone have any information or guidance on how to resolve this issue?
My personal project is a bit further along however after not being able to get this to work in my app I fell back to a much simpler/proven implementation out there. There is this project on GitHub with a guide that implements a barebones app extension with packet tunneling. I figure this can give us common ground.
After changing the bundle and group identifiers to all end with -Caleb and or match up I tried running the app. The app extension does not work whatsoever and seemingly for reasons that are similar to my personal project.
If I pull up the console and filter for the subsystem (com.github.kean.vpn-client-caleb.vpn-tunnel) I see the following.
First you see installd installing it
0x16ba5f000 -[MIUninstaller _uninstallBundleWithIdentity:linkedToChildren:waitForDeletion:uninstallReason:temporaryReference:deleteDataContainers:wasLastReference:error:]: Destroying container com.github.kean.vpn-client-caleb.vpn-tunnel with persona 54D15361-A614-4E0D-931A-0953CDB50CE8 at /private/var/mobile/Containers/Data/PluginKitPlugin/2D0AE485-BB56-4E3E-B59E-48424CD4FD65
And then installd says this (No idea what it means)
0x16b9d3000 -[MIInstallationJournalEntry _refreshUUIDForContainer:withError:]: Data container for com.github.kean.vpn-client-caleb.vpn-tunnel is now at /private/var/mobile/Containers/Data/PluginKitPlugin/2D0AE485-BB56-4E3E-B59E-48424CD4FD65
Concerningly runningboardd seems to immediately try and stop it?
Executing termination request for: <RBSProcessPredicate <RBSProcessBundleIdentifiersPredicate| {(
"com.github.kean.vpn-client-caleb",
"com.github.kean.vpn-client-caleb.vpn-tunnel"
)}>>
[app<com.github.kean.vpn-client-caleb(54D15361-A614-4E0D-931A-0953CDB50CE8)>:1054] Terminating with context: <RBSTerminateContext| explanation:installcoordinationd app:[com.github.kean.vpn-client-caleb/54D15361-A614-4E0D-931A-0953CDB50CE8] uuid:963149FA-F712-460B-9B5C-5CE1C309B2FC isPlaceholder:Y reportType:None maxTerminationResistance:Absolute attrs:[
<RBSPreventLaunchLimitation| <RBSProcessPredicate <RBSProcessBundleIdentifiersPredicate| {(
"com.github.kean.vpn-client-caleb",
"com.github.kean.vpn-client-caleb.vpn-tunnel"
)}>> allow:(null)>
]>
Then runningboardd leaves a cryptic message
Acquiring assertion targeting system from originator [osservice<com.apple.installcoordinationd>:244] with description <RBSAssertionDescriptor| "installcoordinationd app:[com.github.kean.vpn-client-caleb/54D15361-A614-4E0D-931A-0953CDB50CE8] uuid:963149FA-F712-460B-9B5C-5CE1C309B2FC isPlaceholder:Y" ID:33-244-5222 target:system attributes:[
<RBSPreventLaunchLimitation| <RBSProcessPredicate <RBSProcessBundleIdentifiersPredicate| {(
"com.github.kean.vpn-client-caleb",
"com.github.kean.vpn-client-caleb.vpn-tunnel"
)}>> allow:(null)>
]>
And that seems to be all I have to go off of.... If I widen my search a bit I can see backboardd saying things like
Connection removed: IOHIDEventSystemConnection uuid:57E97E5D-8CDE-467B-81CA-36A93C7684AD pid:1054 process:vpn-client type:Passive entitlements:0x0 caller:BackBoardServices: <redacted> + 280 attributes:{
HighFrequency = 1;
bundleID = "com.github.kean.vpn-client-caleb";
pid = 1054;
} state:0x1 events:119 mask:0x800 dropped:0 dropStatus:0 droppedMask:0x0 lastDroppedTime:NONE
Or
Removing client connection <BKHIDClientConnection: 0xbf9828cd0; IOHIDEventSystemConnectionRef: 0xbf96d9600; vpid: 1054(vAF7); taskPort: 0x5D777; bundleID: com.github.kean.vpn-client-caleb> for client: IOHIDEventSystemConnection uuid:57E97E5D-8CDE-467B-81CA-36A93C7684AD pid:1054 process:vpn-client type:Passive entitlements:0x0 caller:BackBoardServices: <redacted> + 280 attributes:{
HighFrequency = 1;
bundleID = "com.github.kean.vpn-client-caleb";
pid = 1054;
} state:0x1 events:119 mask:0x800 dropped:0 dropStatus:0 droppedMask:0x0 lastDroppedTime:NONE source:HID
There's really nothing in the sysdiagnose either. No crash no nothing.
I am stumped. Any idea what might be going wrong for me here? Has something about the way app extensions or sandbox rules work changed in later OSes?
Hello. I would like to develop an application that sends SSH commands via my phone to the server. I know that applications of this type exist, but they are not suitable for my use as a blind person who uses a screen reader. I hope you can help me find libraries that will assist me in development, or ready-made, open-source projects that I can develop and modify if necessary. Thank you in advance.
Topic:
App & System Services
SubTopic:
Networking
I have a question regarding /etc/pf.conf.
If I use this rule,
rdr pass on bridge100 inet proto tcp from 192.168.2.104 to any port {80, 443, 8883} -> 127.0.0.1 port 8080
all other traffic on bridge100 will not function properly, even the traffic that is not destined for 192.168.2.104.
Additionally, the hotspot generated through bridge100 will also become unavailable.
Even if I comment out this rule and run sudo pfctl -e -f /etc/pf.conf, the problem still persists. The situation will only return to normal when I restart my Mac. my macos:15.3.2
my /etc/pf.conf
#
scrub-anchor "com.apple/*"
nat-anchor "com.apple/*"
rdr-anchor "com.apple/*"
rdr pass on bridge100 inet proto tcp from 192.168.2.104 to any port {80, 443, 8883} -> 127.0.0.1 port 8080
dummynet-anchor "com.apple/*"
anchor "com.apple/*"
load anchor "com.apple" from "/etc/pf.anchors/com.apple"
Topic:
App & System Services
SubTopic:
Networking
I’m developing a iOS VPN app, and I need to execute a task in the main app even when it’s in the background or killed state. I know the Network Extension continues running during those times. Is there a way for the extension to immediately notify the app or trigger a task on the app side?
I want to create a NAT64/DNS64 test network as shown here, but I cannot figure out how to do it in the latest versions of MacOS. Is this still available and how can I access the "Create NAT64 Network" checkbox?