Availability check for IotHub Using Ping C# Does not work ICMP Echo packet in container as the outbound does not allow ICMP

Question

I am trying to check availability of an IoTHub using Ping,

public async Task<bool> CheckAvailabilityAsync(string url)
{
    if (string.IsNullOrEmpty(url)) return false;
    Ping ping = new Ping();
    try
    {
        var result = await ping.SendPingAsync(url);
        return result.Status == IPStatus.Success;
    }
    catch (Exception ex)
    {
        return false;
    }
}

here url is "notavilableiothubName.azure-devices.net". look like ICMP is not supported for outbound ! What is the best way to achieve this ! Is there a native availability check for iothubs?

Answer 1

Alternatively I am planning to use socket connection test.

 try
 {
     using (var socket = new Socket(SocketType.Stream, ProtocolType.Tcp) { Blocking = true })
     {
         var task = socket.ConnectAsync(url, 443);
         await task.WaitAsync(TimeSpan.FromSeconds(10));           
         return true;
     }
 }
 catch (Exception)
 {
     return false;
 }

Supporting ports available documented.

https://learn.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-protocols#port-numbers

Not sure if this is the best way, suggestions welcome!