My code below for listening to incoming UDP-messages in UWP just stopped...
using System;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;
using System.Net;
using System.Net.Sockets;
using System.Collections.Generic;
using System.Threading;
public void StartListen()
{
Task.Run(() => MyUdpClient());
}
async void MyUdpClient()
{
try
{
Debug.WriteLine("Start listening..");
var udpClient = new UdpClient()
{
ExclusiveAddressUse = false,
EnableBroadcast = true
};
IPEndPoint myEndPoint = new IPEndPoint(IPAddress.Any, 50000);
udpClient.Client.Bind(myEndPoint);
while (true)
{
var receivedResult = await udpClient.ReceiveAsync();
string packet = Encoding.ASCII.GetString(receivedResult.Buffer).Trim();
Debug.WriteLine(packet);
}
}
catch (Exception ex)
{
Debug.WriteLine("\n MyUdpClient() " + ex.Message);
}
}
The setup is to listen to a navigation Wi-Fi box on a boat that sends out sensor data (typically 20-30 bytes long) via the UDP-protocol using a fixed port 50000. Everything worked as charm until recently when the reading just stopped and the code "hangs"
on ReceivedAsync...
I have been able to conclude the following:
- The code works fine in an Xamarin.Forms app running on Android
- I have been able to reproducing the same error in my office between two PCs connected to the same router (one for send and one for listening)
- I have double checked UWP capability settings and and made sure "Client & server" for both Internet and Private networks are checked
Please help
Anything wrong the port and security..?
receiing I have a pice of simple code receiving UDP packets from a Wi-Fi box
