Flutter wifi EspTouch connection stream problem - flutter

Question

I want to connect to an ESP32 with my Flutter app. To implement the connection via ESPTouch I use the package "esptouch_flutter".
Now there is the following problem: If I enter my password incorrectly, it tries to connect for a minute and aborts, which is what it is supposed to do. However, if I then enter the correct password, it also searches for a minute and aborts, although it should actually connect. If I enter the correct password without having entered anything wrong before, it works fine.
The actual connection is established via a stream.
stream = widget.task.execute();
I have a suspicion that even after dispose of the page, the stream continues to run and then does not restart properly. Can this be? Or maybe anyone else have an idea?
Full Code:
class wifiConnection extends StatefulWidget {
const wifiConnection({Key? key, required this.task}) : super(key: key);
final ESPTouchTask task;
#override
State<StatefulWidget> createState() => wifiConnectionState();
}
class wifiConnectionState extends State<wifiConnection> {
late final Stream<ESPTouchResult> stream;
late final StreamSubscription<ESPTouchResult> streamSubscription;
late final Timer timer;
final List<ESPTouchResult> results = [];
var connectionSuccessfull = true;
#override
void initState() {
stream = widget.task.execute();
streamSubscription = stream.listen(results.add);
final receiving = widget.task.taskParameter.waitUdpReceiving;
final sending = widget.task.taskParameter.waitUdpSending;
// final cancelLatestAfter = receiving + sending; // Default = 1 min
const testTimer = Duration(seconds: 15);
timer = Timer(
// cancelLatestAfter,
testTimer,
() {
streamSubscription.cancel();
if (results.isEmpty && mounted) {
setState(() {
connectionSuccessfull = false;
});
}
},
);
super.initState();
}
#override
dispose() {
timer.cancel();
streamSubscription.cancel();
super.dispose();
}
_dissolve() {
setState(() async {
await Future.delayed(const Duration(milliseconds: 1000));
setOnboardingEnum(Onboarding.wifiFinished);
Navigator.of(context).pushReplacement(createRoute(const StaticBellPage()));
});
}
getConnectionSite(AsyncSnapshot<ESPTouchResult> snapshot) {
if (snapshot.hasError) {
return connectionError();
}
if (!snapshot.hasData) {
return connectionPending();
}
switch (snapshot.connectionState) {
case ConnectionState.active:
return connectionActive();
case ConnectionState.none:
return connectionError();
case ConnectionState.done:
return connectionActive();
case ConnectionState.waiting:
return connectionPending();
}
}
connectionPending() {
return SizedBox(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
const MydoobeAvatar(avatarWidget: CircularProgressIndicator()),
connectionPendingText,
MydoobeButton(
buttonText: "Zurück",
callback: () => Navigator.of(context)..pop(),
),
],
),
);
}
connectionActive() {
return SizedBox(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
const MydoobeAvatar(avatarWidget: CheckArrow()),
connectionSuccessfullText,
MydoobeButton(buttonText: "Weiter", callback: _dissolve),
],
),
);
}
connectionError() {
return SizedBox(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
const MydoobeAvatar(avatarWidget: ErrorCross()),
connectionErrorText,
MydoobeButton(
buttonText: "Zurück",
callback: () => Navigator.of(context)..pop(),
),
],
),
);
}
#override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomInset: false,
body: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
StreamBuilder<ESPTouchResult>(
builder: (context, AsyncSnapshot<ESPTouchResult> snapshot) {
return AnimatedSwitcher(
duration: const Duration(seconds: 2),
child: connectionSuccessfull ? getConnectionSite(snapshot) : connectionError() as Widget);
},
stream: stream,
),
],
),
],
),
);
}
}
var connectionPendingText = RichText(...);
var connectionSuccessfullText = RichText(...);
var connectionErrorText = RichText(...);