DNSProxyProvider is not getting installed - ios

Question

I've created a MacOS app project which contains System Network Extension (DNS proxy). With help of https://developer.apple.com/forums/thread/81103?answerId=246229022 and How to use NEDNSProxyProvider in iOS 11. I enabled DNSProxyProvider. When I built the app for the first time a prompt asked to allow the system extension. I allowed it and Under network in system preference, I can see DNS is not running (yellow dot).
Not running
I added OSSystemextensionRequest from the container App. This is my code.
import Cocoa
import NetworkExtension
import SystemExtensions
import OSLog
class ViewController: NSViewController {
let log=OSLog(subsystem:"com.example.applesamplecode.DNSTestBed", category: "app")
let manager = NEDNSProxyManager.shared()
private func installSystemExtension() {
os_log("DNSFProxy: installing system extension")
let request = OSSystemExtensionRequest.activationRequest(
forExtensionWithIdentifier: "my system extension's bundle indentifier",
queue: .main
)
request.delegate = self
OSSystemExtensionManager.shared.submitRequest(request)
}
private func enable() {
NSLog("enabled already ",self.manager.isEnabled )
NSLog(self.manager.isEnabled ? "Yes" : "No")
self.update {
self.manager.localizedDescription = "DNS"
let proto = NEDNSProxyProviderProtocol()
proto.serverAddress = "localhost"
proto.providerBundleIdentifier = "my system extension's bundle indentifier"
self.manager.providerProtocol = proto
self.manager.isEnabled = true
}
NSLog(self.manager.isEnabled ? "Yes" : "No")
}
private func disable() {
self.update {
self.manager.isEnabled = false
}
}
private func update(_ body: #escaping () -> Void) {
self.manager.loadFromPreferences { (error) in
guard error == nil else {
NSLog("DNS Test App: load error")
return
}
body()
self.manager.saveToPreferences { (error) in
guard error == nil else {
NSLog("DNS Test App: save error")
return
}
NSLog("DNS Test App: saved")
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
self.enable()
self.installSystemExtension()
}
}
extension ViewController: OSSystemExtensionRequestDelegate {
func request(_ request: OSSystemExtensionRequest, actionForReplacingExtension existing: OSSystemExtensionProperties, withExtension ext: OSSystemExtensionProperties) -> OSSystemExtensionRequest.ReplacementAction {
os_log("DNSProxy: Replacing extension %# version %# with version %#", request.identifier, existing.bundleShortVersion, ext.bundleShortVersion)
return .replace
}
func requestNeedsUserApproval(_ request: OSSystemExtensionRequest) {
os_log("DNSProxy: Extension %# requires user approval", request.identifier)
}
func request(_ request: OSSystemExtensionRequest, didFailWithError error: Error) {
os_log("DNSProxy: System extension request failed: %#", error.localizedDescription)
}
/* Other delegate methods here */
func request(_ request: OSSystemExtensionRequest, didFinishWithResult result: OSSystemExtensionRequest.Result) {
switch result {
case .completed:
var manager = NEDNSProxyManager.shared()
case .willCompleteAfterReboot:
os_log("DNSProxy: willCompleteAfterReboot")
#unknown default:
os_log("DNSProxy: default")
}
}
}
Info.plist of system extension:
info.plist
I'm getting an error when the activation request happens: The operation couldn’t be completed. (OSSystemExtensionErrorDomain error 1.). Any help would be great. Thanks.
P.S: I also posted this in apple forums https://developer.apple.com/forums/thread/717647