Hi!
I've been working with Xamarin the past couple days, and this is my first big side project! I'm using the MQTTnet library to connect my mobile devices to a robotic system, to move the robot and also collect data.
The issue i'm having is with the ApplicationMessageReceived event from the MQTTnet:
client.ApplicationMessageReceived += (s, e) =>{ StatusLabel.Text = Encoding.UTF8.GetString(e.ApplicationMessage.Payload) }
On the robot side it is publishing position values at about a 200ms interval over MQTT; after about 5 seconds of the app running the subscription event, it will lock and crash. This is not the case with my C# WPF and my .Net Core versions of a similar app. I can bump the interval to about 1 second interval, and it's somewhat stable, but not ideal for position readout.
Could someone give me pointers as to what might be happening, or the cause?
I have a task setup in my main program body:
protected override void OnCreate()
{
base.OnCreate();
LoadApplication(new App());
//Task to run MQTT
Task.Run(async () => { await App.RunAsync(); }).Wait();
}
static void Main(string[] args)
{
var app = new Program();
global::Xamarin.Forms.Platform.Tizen.Forms.Init(app);
Tizen.Wearable.CircularUI.Forms.Renderer.FormsCircularUI.Init();
app.Run(args);
}
And then in my App I have a RunAsync that does the connection and messaging, I've cut it short for readability:
public static async Task RunAsync()
{
try
{
// Event Handler to the ApplicationMessageRecevied event
client.ApplicationMessageReceived += (s, e) =>
{
StatusLabel.Text = Encoding.UTF8.GetString(e.ApplicationMessage.Payload);
};
client.Connected += async (s, e) =>
{
await client.SubscribeAsync(new TopicFilterBuilder().WithTopic(MQTTSubTopic).Build());
StatusLabel.Text = "Connected";
};
// Attempt a connection to the broker
try
{
await client.ConnectAsync(clientOptions);
}
catch
{
PositionData.Text = "Failed";
}
}
catch
{
StatusLabel.Text = "Failed";
}
}
At this point, I'm open to try anything ![:smile:]( ":smile:")
I've tried moving the Task.Run() to the OnStart() event as well, and no difference in results. My .Net Core application does have a Thread.Sleep(Timeout.Infinite) directly after the Task.Run(), but adding that to this application just prevents it from launching.
Thanks!!
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