I've implemented a custom VPN for macOS (system extension, Packet Tunnel Provider, Developer ID). My tunneling logic uses BSD sockets. My VPN is configured with on-demand and should always connect when there's traffic: targetManager?.isOnDemandEnabled = true targetManager?.onDemandRules = [NEOnDemandRuleConnect()] I have encountered some issues when the device enters sleep (or waking up from sleep). I've tried two scenarios. Scenario 1: protocolConfiguration?.disconnectOnSleep = true With this flag set, the OS will disconnect the VPN just before entering to sleep. However, there were cases when the OS disconnected the VPN but immediately restarted it - probably because of how I defined the on-demand rules. This resulted in the VPN disconnection, then trying to reconnect, and then the Mac entered sleep. When the Mac woke up, the VPN didn't work well. Is there a way to avoid waking up, just before the Mac enters sleep? Scenario 2: protocolConfiguration?.disconnectOnSleep = false Disconnect on sleep is unset, and I've implemented the sleep/wake functions at the provider. With this configuration, the OS won't disconnect the VPN, so even in sleep, the extension should stay 'alive,' so it won't have the problem from (1). But in this case, I had other problems: On sleep, I'm disconnecting the tunnel. But sometimes, on wake(), all my network calls fail. Are the interfaces still down? How can I detect this case from the system extension? Is it possible that the OS would call sleep and then quickly call wake? Is it possible that after sleep, the OS would call the startTunnelWithOptions() function? Is it possible to restart the extension from a clean state right from the wake() function?

I've implemented a custom system extension VPN for macOS, using Packet Tunnel Provider. I have a XPC connection, from the containing app to the (system) extension. What is the expected behavior after the Mac's sleep/wake? Will the same XPC remain valid? Should I start a new connection?

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 for the tunnel's settings (at the Packet Tunnel Provider), I've configured a split tunnel, so some routes are excluded from the tunnel. Now I have the following scenario: The VPN is connected The Mac enters sleep The sleep() function is called (at my Packet Tunnel Provider) The Mac briefly awakes to check emails/push notifications/etc. This traffic is excluded from the tunnel. What is the expected behavior here? Should the wake function be called because of the on-demand rule? Or should the VPN remain asleep because this traffic is excluded from the tunnel?

I've implemented a custom VPN system extension for macOS, utilizing Packet Tunnel Provider. One of the users reported a problem: he was connected to the VPN, and then his Mac entered sleep mode. Upon waking, the VPN is supposed to connect automatically (because of the on-demand rules). The VPN's status changed to 'connecting', but it remained stuck in this status. From my extension logs, I can see that the 'startTunnelWithOption()' function was called 2 minutes after the user clicked the 'connect' button. From the system logs, I noticed some 'suspicious' logs, but I can't be sure if they are related to the problem. Some of them are: kernel: (Sandbox) Sandbox: nesessionmanager(562) deny(1) system-fsctl (_IO "h" 47) entitlement com.apple.developer.endpoint-security.client not present or not true (I don't need this entitlement at the extension) nesessionmanager: [com.apple.networkextension:] NESMVPNSession[Primary Tunnel:XXXXXX(null)]: Skip a start command from YYYYY:session in state connecting NetworkExtension.com.***: RunningBoard doesn't recognize submitted process - treating as a anonymous process sysextd: activateDecision found existing entry of same version: state activated_enabled, ID FAE... Are any of the logs related to the above problem? How can I debug such issues? What info should I get from the user?

I've implemented a VPN app with Packet Tunnel Provider for MacOS and iOS.I have two questions regarding the Extension's sleep/wake functions:1. If the VPN configuration is set with disconnectOnSleep = false, and at the extension I'm sending keep-alives every X seconds, What would happen when the device enters sleep mode? Will it keep sending keep-alive (because the VPN is configured with disconnectOnSleep=false) ?2. If the VPN configuration is set with disconnectOnSleep = true, and also isOnDemandEnabled = true. When the device enters sleep mode, do I need to disconnect the VPN myself? Or the OS would take care of it? And if I should disconnect it myself, the on-demand won't try to turn it on again (because the on-demand) ?

I've implemented a VPN app (with Packet tunnel Provider) for MacOS.Each user has a password, which I'm saving at the keychain with a persistentReference.For some users (not many), the app fails to save the password and I got error -25308 which is User interaction is not allowed.Why does it happening and how can I solve it?

I've implemented a custom VPN for iOS using a Packet Tunnel Provider. I have the entitlement for 'com.apple.managed.vpn.shared'. One option to connect is to use a certificate - this can be done by distributing a VPN payload with the required certificate for the connection. My question is if there's any way to distribute multiple certificates and that I'll be able to read them on my iOS app. For example, on the Certificates payload, I can add multiple certificates, but on the VPN payload, I can choose only one of them. So, can my app read more than one certificate?

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'

I've developed a VPN app for iOS and macOS with Packet Tunnel Provider.Once the VPN is enabled all the traffic should go via the VPN. The VPN is configured to be on demand (isOnDemandEnabled is set), with a rule to always connect.There are some cases where this configuration might cause a problem -When the user goes to a place with a captive portal, the VPN won't be able to connect (because the user will first need to login to the captive portal), but the user also won't be able to login to the captive portal (because all traffic triggers the network extension).In such a case, I need that the captive portal will be shown to the user, and I also need to exclude at least some of the traffic from the VPN, so the user would be able to login to the captive portal (but I don't want to open all traffic, just the traffic needed for the login).Is there any API for those cases? If the answer is no, I'll try to detect this case at the Extension. But I won't be able to open the captive portal from there, so the only thing I would be able to do is to display a message to the user, correct?

I've implemented a custom VPN app for macOS (using Packet Tunnel Provider). I set includeAllNetworks at the protocolConfiguration. When this field is set, I can't connect and I can't send traffic even at the extension. Even simple calls at the extension, like getaddrinfo or curl fails. If I'm unsetting this variable (includeAllNetworks = false) then I can connect without a problem. In addition I can see those lines at the Xcode Console: Connection 2: encountered error(1:53) Connection 3: encountered error(1:53) Connection 1: encountered error(1:53) And those lines at the Console: No mDNS_Keepalive for interface en8/IOSkywalkLegacyEthernetInterface kr 0xE00002C0 NetWakeInterface: en8 <private> no WOMP uDNS_CheckCurrentQuestion: host unreachable error for DNS server <private> for question failed to send packet on InterfaceID 0x5 en8/4 to <private>:53 skt 74 error -1 errno 65 (No route to host) 

The feature of phased release is very useful for our company, but a big minus for us is that the 'Percentage of Users' starts very slow, and at the last two days it's go up very fast. For now what we can do is to start the phased release, pause it after 50% of users get the new version, and after a weak - resume the release. I know it's not the purpose of the pause/resume but we want a better control at the percentages/days of the phase release. Is it possible to change those somehow? Change the percentages per day/ change number of days for the phased release?

I have some questions regarding life cycle of Packet Tunnel Provider: I have some static vars at the PacketTunnelProvider. The user connected to the VPN, then disconnected, so I called the relevant compilation handler. After some time, the user will start VPN again, PacketTunnelProvider will be recreated. Will it use the same class as before, and all static vars will hold their last value? Or would it create a new PacketTunnelProvider? Is it the same behavior for Network Extension vs System Extension? Is it the same behavior for macOS vs iOS? What about running threads? If I created a thread, and then I called the completion handler, will this thread continue to run? P.S If I'm adding exit(0) before 'quitting' the Packet Tunnel Provider, it will force cleaning the memory. But I guess it's not a good behavior for a System Extension to use exit(0) class PacketTunnelProvider: NEPacketTunnelProvider { static var isInitiated = false ... } override func startTunnel(options: [String : NSObject]?, completionHandler: @escaping (Error?) -> Void) { ... PacketTunnelProvider.isInitiated = true ...

I've implemented a custom system-extension VPN (Packet Tunnel Provider) for macOS. At the extension, I need to use a 3rd party dynamic lib. The steps I did: Build phases: Copy files, with Frameworks destination Link Binary With Libraries Build Settings: I set 'Dynamic Library Install Name', 'Dynamic Library Install Name Base', and 'Library Search Path' to the lib folder I set 'Header Search Path' to the headers folder But when running the extension, it's crashing with the error Termination Reason: Namespace DYLD, Code 1 Library missing Library not loaded: @loader_path/somelib.dylib And Reason: tried: '/Library/SystemExtensions/A1111-someID-11111/com.myapp.myappSysExtension.systemextension/Contents/MacOS/libwavmodapi.dylib' (no such file), '/usr/local/lib/libwavmodapi.dylib' (no such file), '/usr/lib/libwavmodapi.dylib' (no such file) (terminated at launch; ignore backtrace) Any idea what I'm doing wrong here? Also, is it even possible to use dynamic libs from a sys-ext?