private void IdentifyMessageType(byte[] payload)
{
if (_identifiedMessageType)
{
return;
}
try
{
try
{
ChoScalarObject scalarObject = (ChoScalarObject)ChoObject.Deserialize(payload);
_messageType = ChoUDPMessageType.Binary;
}
catch
{
try
{
ChoScalarObject scalarObject = (ChoScalarObject)ChoObject.XmlDeserialize <ChoScalarObject>(_encoding.GetString(payload));
_messageType = ChoUDPMessageType.Xml;
}
catch
{
Trace.WriteLine("Failed to identity message type. Messages will be discarded.");
}
}
}
finally
{
_identifiedMessageType = true;
}
}
private void ReceiveCallback(IAsyncResult ar)
{
IPEndPoint ep = null;
var args = (object[])ar.AsyncState;
var session = (UdpClient)args[0];
var local = (IPEndPoint)args[1];
try
{
Byte[] payload = session.EndReceive(ar, ref ep);
EventHandler <ChoUDPMessageEventArgs> rawMessageReceived = RawMessageReceived;
EventHandler <ChoUDPMessageEventArgs> messageReceived = MessageReceived;
if (rawMessageReceived != null)
{
rawMessageReceived(this, new ChoUDPMessageEventArgs(null, payload));
}
else if (messageReceived != null)
{
IdentifyMessageType(payload);
if (_messageType == null)
{
if (rawMessageReceived != null)
{
rawMessageReceived(this, new ChoUDPMessageEventArgs(null, payload));
}
}
else if (_messageType.Value == ChoUDPMessageType.Xml)
{
try
{
ChoScalarObject scalarObject = (ChoScalarObject)ChoObject.XmlDeserialize <ChoScalarObject>(_encoding.GetString(payload));
MessageReceived(this, new ChoUDPMessageEventArgs(scalarObject, null));
}
catch (Exception ex)
{
ChoTrace.Error(ex.ToString());
}
}
else
{
try
{
ChoScalarObject scalarObject = (ChoScalarObject)ChoObject.Deserialize(payload);
MessageReceived(this, new ChoUDPMessageEventArgs(scalarObject, null));
}
catch (Exception ex)
{
ChoTrace.Error(ex.ToString());
}
}
}
}
finally
{
_recieveResult = session.BeginReceive(ReceiveCallback, args);
}
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
Byte[] payload = _listener.EndReceive(ar, ref _groupEP);
EventHandler <ChoUDPMessageEventArgs> rawMessageReceived = RawMessageReceived;
EventHandler <ChoUDPMessageEventArgs> messageReceived = MessageReceived;
if (rawMessageReceived != null)
{
rawMessageReceived(this, new ChoUDPMessageEventArgs(null, payload));
}
else if (messageReceived != null)
{
IdentifyMessageType(payload);
if (_messageType == null)
{
if (rawMessageReceived != null)
{
rawMessageReceived(this, new ChoUDPMessageEventArgs(null, payload));
}
}
else if (_messageType.Value == ChoUDPMessageType.Xml)
{
try
{
ChoScalarObject scalarObject = (ChoScalarObject)ChoObject.XmlDeserialize <ChoScalarObject>(_encoding.GetString(payload));
MessageReceived(this, new ChoUDPMessageEventArgs(scalarObject, null));
}
catch (Exception ex)
{
ChoTrace.Error(ex.ToString());
}
}
else
{
try
{
ChoScalarObject scalarObject = (ChoScalarObject)ChoObject.Deserialize(payload);
MessageReceived(this, new ChoUDPMessageEventArgs(scalarObject, null));
}
catch (Exception ex)
{
ChoTrace.Error(ex.ToString());
}
}
}
}
finally
{
_recieveResult = _listener.BeginReceive(ReceiveCallback, null);
}
}
public T GetData()
{
try
{
if (!_event.WaitOne(5000))
{
return(default(T));
}
using (MemoryMappedViewStream stream = mf.CreateViewStream(0, 0, MemoryMappedFileAccess.Read))
{
if (_msgFormatter == ChoMsgFormatter.Binary)
{
return(ChoObject.Deserialize <T>(stream));
}
else
{
return(ChoObject.XmlDeserialize <T>(stream));
}
}
}
catch (FileNotFoundException)
{
return(default(T));
}
catch (WaitHandleCannotBeOpenedException)
{
return(default(T));
}
catch (SerializationException)
{
return(default(T));
}
catch (AbandonedMutexException)
{
return(default(T));
}
}
