Hi,
We have an issue (https://github.com/actions/runner-images/issues/10924) raised by a user requesting to add 'local network access' permission for macOS 15 and macOS 15-arm64 image runners. Apple introduced a new LNP policy with macOS Sequoia that is not controlled by TCC or MDM. Could you please guide us on how to add 'local network access' permission for macOS 15 and macOS 15-arm64 image runners?
Thanks.
Networking
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We currently supporting proxy app with Tunnel.appEx and PacketTunnelProvider.
Some users report about constant error "The VPN session failed because an internal error occurred." on VPN start (which fails rapidly).
This error occur mostly after user updated app with active VPN.
Rebooting device solves the problem and it doesnt come again, but it is still very frustrating.
I can provide any required info about app setup to solve this issue if you need. Thanks
This is a major issue. After my iPhone 12 Pro was upgraded to iOS 26 beta 6, Apple's official Wi-Fi Aware Sample APP crashed immediately and couldn't be opened. It just force closes.
Has any developer encountered this problem?
We have an application which is written in Swift, which activates Transparent Proxy network extension.
Our Transparent Proxy module is a system extension, which is exposing an app proxy provider interface (We are using NETransparentProxyProvider class and in extension’s Info.plist we use com.apple.networkextension.app-proxy key.)
We are using JAMF MDM profile for installing our transparent proxy in customer environment. We are using VPN payload(https://developer.apple.com/documentation/devicemanagement/vpn) for this network system extension.
This payload does not have any field for order.
As per https://developer.apple.com/documentation/devicemanagement/vpn/transparentproxy-data.dictionary documentation there is another payload for TransparentProxy and we could create a Transparent Proxy profile using iMazingProfile Editor.
Noticed that, if we add the Order attribute to the VPN/TransparentProxy payload, while installing the extension, the save to preferences fails with "Error in saving TP configuration in updateOnDemandRule permission denied" error.
Can we use this Order field to ordering the installed Transparent Proxy extension in a machine?
Customer devices will likely have other Transparent Proxy network extensions as well. We want to allow the Customer to control the order in which each Transparent Proxy network extension receives the network traffic.
How can we set the order of the Transparent proxy extension that can be deployed using MDM profile with VPN/TransparentProxy payload?
Attached the TransparentProxy payload profile for the reference.
DGWebProxy_TransparentProxy_iMazing
Topic:
App & System Services
SubTopic:
Networking
Tags:
Network Extension
System Extensions
Device Management
Hello Everyone,
I’m working on a project that involves multicast communication between processes running on different devices within the same network. For all my Apple devices (macOS, iOS, etc.), I am using NWConnectionGroup, which listens on a multicast address "XX.XX.XX.XX" and a specific multicast port.
The issue occurs when a requestor (such as a non-Apple process) sends a multicast request, and the server, which is a process running on an Apple device using NWConnectionGroup (the responder), attempts to reply. The problem is that the response is sent from a different ephemeral port rather than the port on which the multicast request was received.
If the client is behind a firewall that blocks unsolicited traffic, the firewall only allows incoming packets on the same multicast port used for the initial request. Since the multicast response is sent from a different ephemeral port, the firewall blocks this response, preventing the requestor from receiving it.
Questions:
Is there a recommended approach within the NWConnectionGroup or Network.framework to ensure that responses to multicast requests are sent from the same port used for the request?
Are there any best practices for handling multicast responses in scenarios where the requestor is behind a restrictive firewall?
Any insights or suggestions on how to account for this behavior and ensure reliable multicast communication in such environments would be greatly appreciated.
Thanks,
Harshal
Hello,
I have been playing around the the SimpleURLFilter sample code. I keep getting this error upon installed the filter profile on the device:
mapError unexpected error domain NEVPNConnectionErrorDomainPlugin code 7
which then causes this error:
Received filter status change: <FilterStatus: 'stopped' errorMessage: 'The operation couldn’t be completed. (NetworkExtension.NEURLFilterManager.Error error 14.)'>
I can't find much info about code 7.
Here is the configuration I am trying to run:
<Configuration: pirServerURL: 'http://MyComputer.local:8080' pirAuthenticationToken: 'AAAA' pirPrivacyPassIssuerURL: 'http://MyComputer.local:8080' enabled: 'true' shouldFailClosed: 'true' controlProviderBundleIdentifier: 'krpaul.SimpleURLFilter.SimpleURLFilterExtension' prefilterFetchInterval: '2700.0'>
iOS Development environment
Xcode 16.4, macOS 15.6.1 (24G90)
Run-time configuration: iOS 17.2+
Short Description
After having successfully established an NWConnection (either as UDP or TCP), and subsequently receiving the error code:
UDP Connection failed: 57 The operation couldn't be completed. (Network.NWError error 57 - Socket is not connected), available Interfaces: [enO]
via
NWConnection.stateUpdateHandler = { (newState) in ... } while newState == .failed
the data connection does not restart by itself once cellular (RF) telephony coverage is established again.
Detailed Description
Context: my app has a continuous cellular data connection while in use. Either a UDP or a TCP connection is established depending on the user settings.
The setup data connection works fine until the data connection gets disconnected by loss of connection to a available cellular phone base station. This disconnection simply occurs in very poor UMTS or GSM cellular phone coverage. This is totally normal behavior in bad reception areas like in mountains with signal loss.
STEPS TO REPRODUCE
Pre-condition
App is running with active data connection.
Action
iPhone does loss the cellular data connection previously setup. Typically reported as network error code 57.
Observed
The programmed connection.stateUpdateHandler() is called in network connection state '.failed' (OK).
The self-programmed data re-connection includes:
a call to self.connection.cancel()
a call to self.setupUDPConnection() or self.setupConnection() depending on the user settings to re-establish an operative data connection.
However, the iPhone's UMTS/GSM network data (re-)connection state is not properly identified/notified via NWConnection API. There's no further network state notification by means of NWConnection even though the iPhone has recovered a cellular data network.
Expected
The iPhone or any other means automatically reconnects the interrupted data connection on its own. The connection.stateUpdateHandler() is called at time of the device's networking data connection (RF) recovering, subsequently to a connection state failed with error code 57, as the RF module is continuously (independently from the app) for available telephony networks.
QUESTION
How to systematically/properly detect a cellular phone data network reconnection readiness in order to causally reinitialize the NWConnection data connection available used in app.
Relevant code extract
Setup UDP connection (or similarly setup a TCP connection)
func setupUDPConnection() {
let udp = NWProtocolUDP.Options.init()
udp.preferNoChecksum = false
let params = NWParameters.init(dtls: nil, udp: udp)
params.serviceClass = .responsiveData // service type for medium-delay tolerant, elastic and inelastic flow, bursty, and long-lived connections
connection = NWConnection(host: NWEndpoint.Host.name(AppConstant.Web.urlWebSafeSky, nil), port: NWEndpoint.Port(rawValue: AppConstant.Web.urlWebSafeSkyPort)!, using: params)
connection.stateUpdateHandler = { (newState) in
switch (newState) {
case .ready:
//print("UDP Socket State: Ready")
self.receiveUDPConnection(). // data reception works fine until network loss
break
case .setup:
//print("UDP Socket State: Setup")
break
case .cancelled:
//print("UDP Socket State: Cancelled")
break
case .preparing:
//print("UDP Socket State: Preparing")
break
case .waiting(let error):
Logger.logMessage(message: "UDP Connection waiting: "+error.errorCode.description+" \(error.localizedDescription), available Interfaces: \(self.connection.currentPath!.availableInterfaces.description)", LoggerLevels.Error)
break
case .failed(let error):
Logger.logMessage(message: "UDP Connection failed: "+error.errorCode.description+" \(error.localizedDescription), available Interfaces: \(self.connection.currentPath!.availableInterfaces.description)", LoggerLevels.Error)
// data connection retry (expecting network transport layer to be available)
self.reConnectionServer()
break
default:
//print("UDP Socket State: Waiting or Failed")
break
}
self.handleStateChange()
}
connection.start(queue: queue)
}
Handling of network data connection loss
private func reConnectionServer() {
self.connection.cancel()
// Re Init Connection - Give a little time to network recovery
let delayInSec = 30.0. // expecting actually a notification for network data connection availability, instead of a time-triggered retry
self.queue.asyncAfter(deadline: .now() + delayInSec) {
switch NetworkConnectionType {
case 1:
self.setupUDPConnection() // UDP
break
case 2:
self.setupConnection() // TCP
break
default:
break
}
}
}
Does it necessarily require the use of CoreTelephony class CTTelephonyNetworkInfo or class CTCellularData to get notifications of changes to the user’s cellular service provider?
iPhone 12 pro with iOS 26.0 (23A5276f)
App: https://developer.apple.com/documentation/wifiaware/building-peer-to-peer-apps
We aim to use Wi-Fi Aware to establish file transfer between Android and Apple devices.
Apple will act as the Publisher, and Android will act as the Subscriber.
According to the pairing process outlined in the Wi-Fi Aware protocol (Figure 49 in the Wi-Fi Aware 4.0 specification), the three PASN Authentication frames have been successfully exchanged. Subsequently, Android sends the encrypted Follow-up PMF to Apple, but the Apple log shows: Failed to parse event. Please refer to the attached complete log.
We request Apple to provide a solution.
apple Log-20250808a.txt
I've been wondering what is the memory limit for network extensions. Specifically, I'm using the NEPacketTunnelProvider extension point.The various posts on this forum mention 5 MB and 6 MB for 32-bit and 64-bit respectively. However I find that (at least on iOS 10) the upper limit seems to be 15 MB. Is this the new memory limit for extensions?
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 haven’t come across any official documentation regarding the limit on the number of Network Extensions macOS can run. However, I did see some discussions suggesting that Apple might restrict this to 5 extensions in macOS Tahoe.
Is there any official confirmation on this?
Hi, We are trying to use Apple Security API for KeyChain Services.
Using the common App Group : Specifying the common app group in the "kSecAttrAccessGroup" field of the KeyChain query, allowed us to have a shared keychains for different apps (targets) in the app group, but this did not work for extensions.
Enabling the KeyChain Sharing capability : We enabled the KeyChain Sharing Ability in the extensions and the app target as well, giving a common KeyChain Access group. Specifying this in the kSecAttrAccessGroup field also did not work. This was done in XCode as we were unable to locate it in the Developer portal in Indentifiers.
We tried specifying "$AppIdentifier.KeyChainSharingGroup" in the kSecAttrAccessGroup field , but this did not work as well
The error code which we get in all these 3 cases when trying to access the Keychain from the extension is error code 25291 (errSecNotAvailable). The Documentation says this error comes when "No Trust Results are available" and printing the error in xcode using the status says "No keychain is available.
The online Documentation says that it is possible to share keychain with extensions, but by far we are unable to do it with the methods suggested.
Do we need any special entitlement for this or is there something we are missing while using these APIs?
We really appreciate any and all help in solving this issue!
Thank you
On macOS Tahoe26.0, iOS 26.0 (23A5287g), Xcode 26.0 beta 3 (17A5276g)
1、Follow this tutorial Downloading asset packs hosted by Apple
When i download a background asset packs hosted by Apple, Xcode callback "Download failed: The helper received an invalid server response with the status code “400”." Before downloading, I uploaded the three aar files to the Apple server using the Transporter app. Three Manifest.json content is:
{"assetPackID":"bdassets2","downloadPolicy":{"onDemand":{}},"fileSelectors":[{"file":"1.jpg"},{"file":"2.pag"},{"file":"3.mp4"}],"platforms":["iOS"]}
and
{"assetPackID":"bdassets1","downloadPolicy":{"prefetch":{"installationEventTypes":["firstInstallation","subsequentUpdate"]}},"fileSelectors":[{"file":"1.jpg"},{"file":"2.pag"},{"file":"3.mp4"},{"directory":"a1"}],"platforms":["iOS"]}
and
{"assetPackID":"bdassets0","downloadPolicy":{"essential":{"installationEventTypes":["firstInstallation","subsequentUpdate"]}},"fileSelectors":[{"file":"1.jpg"},{"file":"2.pag"},{"file":"3.mp4"},{"directory":"a1"}],"platforms":["iOS"]}
The same error was reported when the three aar files were obtained. I obtained it using the following code:
do {
let assetPack = try await AssetPackManager.shared.assetPack(withID: "bdassets2")
try await AssetPackManager.shared.ensureLocalAvailability(of: assetPack)
} catch {
print("Download failed:", error)
}
2、Follow this tutorial Testing your asset packs locally
I use this command line to start the test server:xcrun ba-serve --host 172.17.9.62 bdassets2.aar, The content displayed on the terminal is:
Loading asset packs…
Loading the asset pack at “bdassets2.aar”…
Choose an identity in the panel to continue.
Listening on port 56061…
When running the project, Xcode reports an error:Download failed: Could not connect to the server.
I use iPhone directly visit this website: https://172.17.9.62:56061, on the page display "Hello, world!"
There are too few error messages in both of the above questions. I have no idea what the specific reasons are.I hope someone can offer some guidance.
Best Regards.
Goal : Block all outbound connections to a static list of hosts (both In-app requests and WKWebView/Safari).
App & both extensions have Network Extension entitlement with content-filter-provider and filter-control-provider
What’s working:
Safari and WKWebView requests matching the block list are dropped.
What’s broken:
In-app traffic never reaches the Data Provider—those requests always succeed.
Setup:
• NEFilterProviderConfiguration with both Data & Control providers, filterBrowsers = true, filterSockets = true
• Data Provider implements handleNewFlow for socket/browser flows
• Control Provider implements handleNewFlow for browser flows
• Enabled via saveToPreferences() and toggled ON in Settings
send a request and it returns with timeout
Integration Team are Using Fortigate as a firewall and NGINX for some reasons
so we use VPN TO Access , requests always succeed but at once it failed with timeout in randomize request not specific one
we are using URLSession as a network layer
when I retry the same failed request again, it success
the request cannot connect apigee
Sec Team concern {
app session hits the security gateway with lots of SYN step to try to initiate a new session and doesn’t wait for (SYN-ACK / ACK) steps to happen to make sure the connection initiated correctly and gateway consider it flooding attack
}
Topic:
App & System Services
SubTopic:
Networking
Hi everyone,
I'm currently working on a project where I need to send multicast packets across all available network interfaces using Apple Network Framework's NWConnectionGroup. Specifically, the MacBook (device I am using for sending multicast requests, MacOS: 15.1) is connected to two networks: Wi-Fi (Network 1) and Ethernet (Network 2), and I need to send multicast requests over both interfaces.
I tried using the .requiredInterface property as suggested by Eskimo in this post, but I’m running into issues.
It seems like I can't create an NWInterface object because it doesn't have any initializers.
Here is the code which I wrote:
var multicast_group_descriptor : NWMulticastGroup
var multicast_endpoint : NWEndpoint
multicast_endpoint = NWEndpoint.hostPort(host: NWEndpoint.Host("234.0.0.1"), port: NWEndpoint.Port(rawValue: 49154)!)
var connection_group : NWConnectionGroup
var multicast_params : NWParameters
multicast_params = NWParameters.udp
var interface = NWInterface(NWInterface.InterfaceType.wiredEthernet)
I get following error:
'NWInterface' cannot be constructed because it has no accessible initializers
I also experimented with the .requiredInterfaceType property. Even when I set it to .wiredEthernet and then change it to .wifi, I am still unable to send requests over the Wi-Fi network.
Here is the code I wrote:
var multicast_params : NWParameters
multicast_params = NWParameters.udp
multicast_params.allowLocalEndpointReuse = true
multicast_params.requiredInterfaceType = .wiredEthernet
var ip = multicast_params.defaultProtocolStack.internetProtocol! as! NWProtocolIP.Options
ip.disableMulticastLoopback = true
connection_group = NWConnectionGroup(with: multicast_group_descriptor, using: multicast_params)
connection_group.stateUpdateHandler = { state in
print(state)
if state == .ready {
connection_group.send(content: "Hello from machine on 15".data(using: .utf8)) { error in
print("Send to mg1 completed on wired Ethernet with error \(error?.errorCode)")
var params = connection_group.parameters
params.requiredInterfaceType = .wifi
connection_group.send(content: "Hello from machine on 15 P2 on Wi-Fi".data(using: .utf8)) { error in
print("Send to mg1 completed on Wi-Fi with error \(error?.errorCode)")
}
}
}
}
Is this expected behavior when using NWConnectionGroup? Or is there a different approach I should take to ensure multicast requests are sent over both interfaces simultaneously?
Any insights or suggestions would be greatly appreciated!
Thanks in advance,
Harshal
Hello,
We've been working on an app that uses the new NEUrlFilter API and we've got a question.
Currently, the system is designed with the assumption that a single app == usecase == single remote database.
But what if we would like to give the user the ability to use different blocklists?
For example, the user may want to:
Block scam domains
Block tracking domains
Block adult domains
Or any composition of these 3
What should we do to give the user this option?
It seems that we could differentiate different databases by using different PIR service hostnames, but that would also mean that we'll have to send several requests for the same usecase but with different PIR service hostnames (and they'll all share the same app bundle ID). Will these requests be accepted then?
If not, is there an alternative?
PS: By sending a request I mean submitting this form
I've implemented a custom system extension VPN for macOS using Packet Tunnel Provider. The VPN is configured with on-demand, and a rule to always connect whenever there's traffic:
onDemandRules = [NEOnDemandRuleConnect()]
As expected, if the VPN isn't active, all traffic gets blocked until it is ready.
Not expected: In the following scenario, there is some 'traffic leak':
Use only WiFi (not wired cable)
Connect the VPN
Disable the WiFi and wait for the VPN to disconnect
Enable the WiFi
Some packets are routed outside the VPN, and aren't being blocked
Some moments after, all traffic will be blocked, and the VPN will start the 'connecting' process.
Is the above scenario a 'known' issue? Can it be a race condition in the OS, where some packets can be sent after the network is brought back before the VPN process starts? Is there any way to fix this problem?
P.S:
I'm not using flags such as 'capture all network'
For a past few days, I have been exploring control Filter and data filter. I am unable to understand how control moves from various functions of data filter to control Filter.
One thing that I am unable to figure out is that when I pass verdict as .allow in dataFilter's handleNewFlow and mark .shouldReport as true, I get inBytes and outbytes in the flow report of handle() in controlFilter. But when I pass verdict as needRules and wait till the handle is called in controlFilter when the report.event == .flowClosed, I don't get inBytes and outBytes.
I am unable to understand this complete flow of network extension from the apple documentation.
Can someone provide me with some flow chart or some pictorial representation or detailed explanation of network extension for iOS?
Also is there some way to imitate the ..statisticsReportFrequency for iOS as it is not available for iOS?
If the includeAllNetworks flag to true, we cannot update our app via Xcode, TestFlight or the AppStore. In the AppStore and TestFlight cases, it seems that the packet tunnel process is stopped before the new app is downloaded - once the packet tunnel process is stopped, it can’t be started again via Settings/VPN profiles, nor can it be started via the app.