public void ReceiveActionMethod(UdpClient socket)
{
while (true)
{
try
{
LogService.Logger.LogMessageToXml("Receiving started", null, LogService.LogMessageSeverities.Information);
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
byte[] objectBytes = socket.Receive(ref sender);
STUNMessage stunMessage = new STUNMessage(objectBytes);
if (stunMessage.MessageHeader.MessageType == STUNMessageTypes.Binding_Request)
{
STUNMessage responseMessage = new STUNMessage(STUNMessageTypes.Binding_SuccessResponse);
responseMessage.AddAttribute(new STUNAttributeTLV(STUNAttributeTypes.MAPPED_ADDRESS, new MappedAddress(AddressFamilyTypes.IPv4, (ushort)sender.Port, sender.Address)));
socket.Send(responseMessage.Bytes, responseMessage.SizeInBytes, sender);
}
string message = "Getting objects - Length: " + objectBytes.Length.ToString();
if (MessageReceived != null) MessageReceived(this, new MessageReceivedEventArgs() { Message = message});
LogService.Logger.LogMessageToXml(message, null, LogService.LogMessageSeverities.Information);
}
catch (Exception ex)
{
LogService.Logger.LogMessageToXml(ex.Message, ex, LogService.LogMessageSeverities.Error);
}
}
}
public void SendBindingRequest()
{
STUNMessage stunMessage = new STUNMessage(STUNMessageTypes.Binding_Request);
byte[] stunMessageBytes = stunMessage.Bytes;
// Connect the socket to the remote endpoint. Catch any errors.
try
{
_udpSocket.SendTo(stunMessageBytes, _serverEndpoint);
_udpSocket.Poll(100, SelectMode.SelectRead);
StartReceiveUdp(_udpSocket);
//_tcpSocket.Connect(_serverEndpoint);
//_tcpSocket.Send(stunMessageBytes);
//_tcpSocket.StartListening();
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
throw ex;
}
}
private void StartReceiveUdp(Socket sender)
{
Task.Run(() =>
{
while (true)
{
try
{
IPEndPoint remoteEndpoint = new IPEndPoint(IPAddress.Any, 0);
EndPoint remote = (EndPoint)remoteEndpoint;
byte[] bytes = new byte[short.MaxValue];
int messageLength = sender.ReceiveFrom(bytes,ref remote);
byte[] receivedBytes = bytes.Take(messageLength).ToArray();
STUNMessage stunMessage = new STUNMessage(receivedBytes);
}
catch (Exception ex)
{
ErrorOccurredEventArgs args = new ErrorOccurredEventArgs();
args.Exception = ex;
if (ErrorOccurred != null) ErrorOccurred(this, args);
Debug.WriteLine(ex.Message);
break;
}
}
});
}
