stop io before configuration, start afterwards

deltachat-ios/Controller/AccountSetupController.swift

@@ -579,6 +579,7 @@ class AccountSetupController: UITableViewController, ProgressAlertHandler {
         }
 
         print("oAuth-Flag when loggin in: \(dcContext.getAuthFlags())")
+        dcContext.stopIo()
         dcContext.configure()
         showProgressAlert(title: String.localized("login_header"), dcContext: dcContext)
     }
@@ -659,6 +660,7 @@ class AccountSetupController: UITableViewController, ProgressAlertHandler {
             notification in
             if let ui = notification.userInfo {
                 if ui["error"] as! Bool {
+                    self.dcContext.maybeStartIo()
                     var errorMessage = ui["errorMessage"] as? String
                     if let appDelegate = UIApplication.shared.delegate as? AppDelegate, appDelegate.reachability.connection == .none {
                         errorMessage = String.localized("login_error_no_internet_connection")
@@ -667,6 +669,7 @@ class AccountSetupController: UITableViewController, ProgressAlertHandler {
                     }
                     self.updateProgressAlert(error: errorMessage)
                 } else if ui["done"] as! Bool {
+                    self.dcContext.maybeStartIo()
                     self.updateProgressAlertSuccess(completion: self.handleLoginSuccess)
                 } else {
                     self.updateProgressAlertValue(value: ui["progress"] as? Int)

deltachat-ios/Controller/WelcomeViewController.swift

@@ -114,6 +114,7 @@ class WelcomeViewController: UIViewController, ProgressAlertHandler {
         if success {
             addProgressAlertListener(progressName: dcNotificationConfigureProgress, onSuccess: handleLoginSuccess)
             showProgressAlert(title: String.localized("login_header"), dcContext: dcContext)
+            dcContext.stopIo()
             dcContext.configure()
         } else {
             accountCreationErrorAlert()

deltachat-ios/Handler/ProgressAlertHandler.swift

@@ -68,8 +68,10 @@ extension ProgressAlertHandler {
             guard let self = self else { return }
             if let ui = notification.userInfo {
                 if ui["error"] as? Bool ?? false {
+                    DcContext.shared.maybeStartIo()
                     self.updateProgressAlert(error: ui["errorMessage"] as? String)
                 } else if ui["done"] as? Bool ?? false {
+                    DcContext.shared.maybeStartIo()
                     self.updateProgressAlertSuccess(completion: onSuccess)
                 } else {
                     self.updateProgressAlertValue(value: ui["progress"] as? Int)