Issue in receiving data continuously from IoT Hub about azure-iot-sdk-csharp HOT 8 CLOSED

from azure-iot-sdk-csharp.

Its not executing the break inside. So could that be the cause of cancellation token timing out.

If thats the case how should I solve this.Please let me know.

 if (ct.IsCancellationRequested)
                    break;

I also see that it just comes out of the method and so the return View gets executed.
So after this I am able to see the page. Though I keep a break point at the end of the method - } - it doesn't come there. Looks like it abruptly ends and goes to the called method.
Can we expect any issue in the below statement which is inside the loop.
string data = Encoding.UTF8.GetString(eventData.GetBytes()); --> like a null value or so is being called on - GetBytes or GetString here on eventData --- and it throws error ... or similar?

from azure-iot-sdk-csharp.

I tried including try catch block
i.e placing the code statements - while(true) part - of the method ReceiveMessagesFromDeviceAsync in try catch block as below.
I have confirmed that it never hits the statements marked below as ====>
STT-A or STT-B or STT-E or STT_END_OF_METHOD
It loops inside while for some number of times (i.e receives data from IoT Hub)
and at one point of time at the statement STT- IoT_DATA it comes out of the method and returns to the calling method - i.e to the method SetHubs() I have mentioned in my query\comment
(This proceeds to display the page)

try{
          if (ct.IsCancellationRequested) 
                break; // STT-A
          EventData eventData = await eventHubReceiver.ReceiveAsync(); // STT- IoT_DATA
          if (eventData == null) 
                 continue;//STT-B
          string data = Encoding.UTF8.GetString(eventData.GetBytes());
}
catch(Expecption exp){
string e =exp.message(); //STT-E
}
} //STT-END_OF_METHOD

Am I missing something like the partition limit or so. If so please guide me how to do or make the required settings to make this work.

## Note : The same code works fine in a Console App.

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I would like to know why you commented out Task.WaitAll ?

//Task.WaitAll(tasks.ToArray());

from azure-iot-sdk-csharp.

In this web app, If that is not commented the system hangs - continuously waits - there ;
even when I'm debugging the debugger doesn't get back if that statement is hit.

When this statement(Task.WaitAll(tasks.ToArray());) is in a Console App the control(or debugger) continuously loops thro while\foreach loop
until a break given.

from azure-iot-sdk-csharp.

I don't think you can fire and forget async receivers this way. You need to have a background task manager to root client objects and tasks. For example, what happens when eventHubClient is garbage collected while your receiver is still running. Can you dig into web for correct implementation of "fire and forget" programming in ASPNet applications?

from azure-iot-sdk-csharp.

Hi @jeywinlizy
I think the conversation has now gone way beyond the SDK use itself. Would it be possible for you to post the issue you are having on StackOverflow to make sure you get the right people looking into it?
Thanks

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@jeywinlizy - Since this issue is not related particularly to this SDK, we're closing it here.

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