async Task <bool> InitializeUnicastRecv() { try { if (usocketRecv != null) { usocketRecv.MessageReceived -= UDPUnicastMessageReceived; usocketRecv.Dispose(); usocketRecv = null; } usocketRecv = new DatagramSocket(); usocketRecv.MessageReceived += UDPUnicastMessageReceived; // NetworkAdapter adapter = GetDefaultNetworkAdapter(); // if (adapter != null) // await msocketRecv.BindServiceNameAsync(UnicastUDPPort.ToString(), adapter); // else await usocketRecv.BindServiceNameAsync(UnicastUDPPort.ToString()); return(true); } catch (Exception e) { System.Diagnostics.Debug.WriteLine("Exception while listening: " + e.Message); } return(false); }
async Task <bool> Send(string ip, string Message) { try { if (msocketSend == null) { return(false); } // Add Device Information string command = CompanionProtocol.GetCommandFromMessage(Message); Dictionary <string, string> parameters = CompanionProtocol.GetParametersFromMessage(Message); if (!string.IsNullOrEmpty(command)) { if (parameters == null) { parameters = new Dictionary <string, string>(); } if ((parameters != null) && (!parameters.ContainsKey(CompanionProtocol.parameterIPAddress)) && (!parameters.ContainsKey(CompanionProtocol.parameterName)) && (!parameters.ContainsKey(CompanionProtocol.parameterKind)) && (!parameters.ContainsKey(CompanionProtocol.parameterID))) { parameters.Add(CompanionProtocol.parameterID, LocalCompanionDevice.Id); parameters.Add(CompanionProtocol.parameterIPAddress, LocalCompanionDevice.IPAddress); parameters.Add(CompanionProtocol.parameterKind, LocalCompanionDevice.Kind); parameters.Add(CompanionProtocol.parameterName, LocalCompanionDevice.Name); Message = CompanionProtocol.CreateCommand(command, parameters); } } HostName mcast; string port; if ((string.IsNullOrEmpty(ip)) || (string.Equals(ip, MulticastIPAddress))) { port = MulticastUDPPort.ToString(); mcast = new HostName(MulticastIPAddress); } else { port = UnicastUDPPort.ToString(); mcast = new HostName(ip); } DataWriter writer = new DataWriter(await msocketSend.GetOutputStreamAsync(mcast, port)); if (writer != null) { writer.WriteString(Message); uint result = await writer.StoreAsync(); bool bresult = await writer.FlushAsync(); writer.DetachStream(); writer.Dispose(); System.Diagnostics.Debug.WriteLine("Message Sent to: " + mcast.CanonicalName + ":" + port + " content: " + Message); return(true); } } catch (Exception exception) { // If this is an unknown status it means that the error is fatal and retry will likely fail. if (SocketError.GetStatus(exception.HResult) == SocketErrorStatus.Unknown) { return(false); } return(false); } return(false); }