Stealth-VPN.swift

/*
Privacy
By using Stealth VPN you agree to the following: 
Stealth VPN does not collect or sell any and all user data. 
We do not collect logs of websites you visit or your search history, this means everything you do when connected to Stealth VPN is secure, encrypted and not stored anywhere. 
When connecting, we identify connection issues in order to debug them to make Stealth VPN better. 
We use the following services in Stealth VPN: Firebase, Adsense, Fabric, Bugfender, Applovin and Unity Ads. 
Generic information is used to debug connection issues with these services and none of your browsing information is ever logged or shared with anyone.

Terms
Innovative Digital Technologies and Stealth VPN have the right to remove access to any user attempting to gain Stealth VPN Pro (No Ads) for free. 
Stealth VPN uses receipt validation in order to ensure you have a valid purchase, you may start receiving ads if receipt validation fails or you are jailbroken. 
Stealth VPN will show you a new privacy policy if any changes occur.
*/

Protocols
OpenVPN
Thanks to: "https://github.com/ss-abramchuk/OpenVPNAdapter"

lazy var vpnAdapter: OpenVPNAdapter = {
        let adapter = OpenVPNAdapter()
        adapter.delegate = self
        
        return adapter
    }()
    
Shadowsocks
Thanks to: "https://github.com/zhuhaow/NEKit"
Supported Methods
        let obfuscater = ShadowsocksAdapter.ProtocolObfuscater.OriginProtocolObfuscater.Factory()
        let algorithm: CryptoAlgorithm
        switch method{
        case "AES-128-CFB":algorithm = .AES128CFB
        case "AES-192-CFB":algorithm = .AES192CFB
        case "AES-256-CFB":algorithm = .AES256CFB
        case "CHACHA20":algorithm = .CHACHA20
        case "SALSA20":algorithm = .SALSA20
        case "RC4-MD5":algorithm = .RC4MD5
            
        default:
            return
        }