Disconnect before switching active profile

Make sure that completionHandler is ALWAYS called, despite vpn
object being nil.

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+- Profile sometimes not connecting right after add.
+
 ## 1.0.2 Beta 1315 (2019-03-03)
 
 ### Fixed

Passepartout-iOS/Scenes/ServiceViewController.swift

@@ -185,12 +185,13 @@ class ServiceViewController: UIViewController, TableModelHost {
     }
     
     private func activateProfile() {
-        service.activateProfile(uncheckedProfile)
-
-        reloadModel()
-        tableView.reloadData()
-
-        vpn.disconnect(completionHandler: nil)
+        vpn.disconnect { (error) in
+            self.service.activateProfile(self.uncheckedProfile)
+            self.vpn.prepare(withProfile: self.uncheckedProfile) {
+                self.reloadModel()
+                self.tableView.reloadData()
+            }
+        }
     }
 
     @IBAction private func renameProfile() {

Passepartout/Sources/VPN/GracefulVPN.swift

@@ -59,14 +59,22 @@ class GracefulVPN {
         self.profile = profile
         log.info("Preparing...")
         service.clearVpnLastError()
-        vpn?.prepare(completionHandler: completionHandler)
+        guard let vpn = vpn else {
+            completionHandler?()
+            return
+        }
+        vpn.prepare(completionHandler: completionHandler)
     }
     
     func reconnect(completionHandler: ((Error?) -> Void)?) {
         service.clearVpnLastError()
+        guard let vpn = vpn else {
+            completionHandler?(nil)
+            return
+        }
         do {
             log.info("Reconnecting...")
-            try vpn?.reconnect(configuration: service.vpnConfiguration(), completionHandler: completionHandler)
+            try vpn.reconnect(configuration: service.vpnConfiguration(), completionHandler: completionHandler)
         } catch let e {
             log.error("Could not reconnect: \(e)")
         }
@@ -74,9 +82,13 @@ class GracefulVPN {
     
     func reinstall(completionHandler: ((Error?) -> Void)?) {
         service.clearVpnLastError()
+        guard let vpn = vpn else {
+            completionHandler?(nil)
+            return
+        }
         do {
             log.info("Reinstalling...")
-            try vpn?.install(configuration: service.vpnConfiguration(), completionHandler: completionHandler)
+            try vpn.install(configuration: service.vpnConfiguration(), completionHandler: completionHandler)
         } catch let e {
             log.error("Could not reinstall: \(e)")
         }
@@ -95,14 +107,26 @@ class GracefulVPN {
     }
     
     func disconnect(completionHandler: ((Error?) -> Void)?) {
-        vpn?.disconnect(completionHandler: completionHandler)
+        guard let vpn = vpn else {
+            completionHandler?(nil)
+            return
+        }
+        vpn.disconnect(completionHandler: completionHandler)
     }
 
     func uninstall(completionHandler: (() -> Void)?) {
-        vpn?.uninstall(completionHandler: completionHandler)
+        guard let vpn = vpn else {
+            completionHandler?()
+            return
+        }
+        vpn.uninstall(completionHandler: completionHandler)
     }
     
     func requestBytesCount(completionHandler: @escaping ((UInt, UInt)?) -> Void) {
-        vpn?.requestBytesCount(completionHandler: completionHandler)
+        guard let vpn = vpn else {
+            completionHandler(nil)
+            return
+        }
+        vpn.requestBytesCount(completionHandler: completionHandler)
     }
 }