gistfile1.txt

Hello @JanFlikweert-3331 ,

working with UDP can be challenging.

It seems you tried the 'blocking' version of working with UDP.

Have you tried the [async][1] version also?

I made a little adjustment to my project:

```
while (true)
{
	messageBeingProcessed = true;

	udpClient.BeginReceive(new AsyncCallback(ReceiveCallback), s);

	while (messageBeingProcessed)
	{
		Thread.Sleep(5); // MUST BE LOWER THAN SERVER TIME
	}
}
```

When a message is received, this 'messageBeingProcessed' is reset.

```
public static void ReceiveCallback(IAsyncResult ar)
{
	try
	{
		UdpClient u = ((UdpState)(ar.AsyncState)).u;
		IPEndPoint e = ((UdpState)(ar.AsyncState)).e;
		byte[] receiveBytes = u.EndReceive(ar, ref e);
		// do something with the received bytes.
	}
	finally
	{
		messageBeingProcessed = false;
	}            
}
```

This solution is sunning stable in our Azure IoT edge project.

  [1]: https://learn.microsoft.com/en-us/dotnet/api/system.net.sockets.udpclient.beginreceive?view=net-5.0&WT.mc_id=IoT-MVP-5002324