Network Extension (Built-in VPN)

Andrii Doroshko

Transcript

1. App Extensions: Network Extension (Built-in VPN) Andrii Doroshko Junior Software Developer My experience
2. Problem API are: - protected and located on a private company’s network. - without corporative VPN connection we can not work with it (API). How to solve? - Ask user to install existing OpenVPN app. - Investigate possible ways to achieve VPN connection inside our app. So that? We make a decision to make a deep dive in to App Extension technology's facilities. What’s the problem?
3. Agenda • What is App Extension • Network Extension overview • How it works? • Little bit of code • Types of App Extension
4. App extensions Give users access to your app’s functionality and content throughout iOS
5. Important things • App Extension is different from a host app • Use your host app to deliver your extension • Each extension is a separate binary that runs independently of the host app • Host app calls extension
6. So, how do they work?
7. Network Extension 2. NEFilterProvider 4. NETunnelProvider 3. NEVPNManager 1. NEHotspotHelper
8. NETunnelProvider 2. An abstract base class shared by NEPacketTunnelProvider and NEAppProxyProvider. 1. Each instance corresponds to a single tunneling session, with a single associated configuration. 3. The NETunnelProvider class should not be subclassed directly. Instead, you should create subclasses of NETunnelProvider subclasses. - Use NEAppProxyProvider to operate on a TCP/UDP level. - Use NEPacketTunnelProvider to operate on a IP level.
9. VPN protocol
12. So, how do they work?
13. Host app User inputs credentials NETunnelProviderManager update with new credentials Extension Call `start()` method Call `start()` method Configure OpenVPN Adapter Establish connection
14. Host app User inputs credentials NETunnelProviderProtocol created and updated Configure OpenVPN Adapter Extension Establish connection
15. Extension is a separate binary, so what?
16. Entitlements & App groups
17. How to Debug?
18. There are many types of App Extensions Telegram Share Extension
19. There are many types of App Extensions Google
 Keyboard iOS
20. There are many types of App Extensions iMessage
 Google Maps
 Extension
21. There are many types of App Extensions Today
 Extension
22. Questions ?
23. Andrii Doroshko