/// <summary>
/// This is where all the actual 'listening' is done.
/// </summary>
protected void Listen()
{
if (Session == null)
{
throw new NullReferenceException("This IListener has no Session yet!");
}
IPEndPoint remoteEndPoint;
if (_endpoint == "ANY")
{
remoteEndPoint = new IPEndPoint(IPAddress.Any, _port);
}
else
{
remoteEndPoint = new IPEndPoint(IPAddress.Parse(_endpoint), _port);
}
byte[] buffer;
string loggingEvent;
_hexEncoder = new HexEncoder();
try
{
_udpClient = new UdpClient(_port);
_log.Info(GetHashCode(), "Started listening for UDP on port " + _port.ToString() + " using prefix: " + MessagePrefix);
while (true)
{
buffer = _udpClient.Receive(ref remoteEndPoint);
var sender = "";
if (Session.Viewer.ShowListenerPrefix)
{
sender = remoteEndPoint.Address.ToString() + " ";
}
if (_encName == HexEncoder.EncName)
{
loggingEvent = sender + _hexEncoder.GetHex(_address, buffer);
_address += (ulong)buffer.Length;
}
else
{
loggingEvent = sender + Encoding.GetEncoding(_encName).GetString(buffer);
}
Session.AddEvent(this, loggingEvent);
}
}
catch (SocketException ex)
{
var foo = "(UDP ERROR) The UDP listener could not be started at port " + _port.ToString() + " " + Environment.NewLine + ex.Message;
_log.Error(GetHashCode(), foo);
Session.AddEvent(this, foo);
}
catch (ThreadAbortException)
{
var foo = "(UDP) UdpListener thread aborted.";
_log.Error(GetHashCode(), foo);
Session.AddEvent(this, foo);
}
catch (Exception e)
{
var foo = "(UDP ERROR) Internal error in UdpListener: " + e.Message + Environment.NewLine + e.StackTrace;
_log.Error(GetHashCode(), foo);
Session.AddEvent(this, foo);
}
finally
{
if (_udpClient != null)
{
_udpClient.Close();
}
}
}
