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POC# Sockets BeginRecieve Async Callback not being called
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copied!<p>I'm opening a UDP Socket for receiving udp packets. However sometimes It never gets to the point <code>Do stuff with data</code>. </p> <p>Data is being received, I can see it on Wireshark: </p> <p><img src="https://i.stack.imgur.com/97hYi.png" alt="wireshark capture"></p> <p>but the callback only runs to close the socket when I run the Disconnect code.</p> <pre><code> private void OpenUDPSocket() { this.processDataSockets.Clear(); IPHostEntry host; host = Dns.GetHostEntry(Dns.GetHostName()); foreach (IPAddress ip in host.AddressList) { UPDData data = new UPDData(); data.Socket = new Socket(ip.AddressFamily, SocketType.Dgram, ProtocolType.Udp); data.Socket.Bind(new IPEndPoint(ip, 2222)); data.Socket.EnableBroadcast = true; data.Buffer = new byte[512]; data.Socket.BeginReceive(data.Buffer, 0, 512, SocketFlags.None, this.ReceivedData, data); this.processDataSockets.Add(data); } this.socketOpen = true; } private void ReceivedData(IAsyncResult ar) { UPDData data; try { data = (UPDData)ar.AsyncState; data.Socket.EndReceive(ar); } catch (ObjectDisposedException) { // The connection has been closed return; } //... Do stuff with data data.Socket.BeginReceive(data.Buffer, 0, 512, SocketFlags.None, this.ReceivedData, data); } </code></pre> <p>When this happens I'm left stuck, restarting the application doesn't help. I need to reboot my machine for the callback to start working again.</p> <p>I have no idea where to go from here or how to fix this. </p> <p>Any Ideas what's happening?</p>

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