/// <summary>
/// Raises PacketReceived event.
/// </summary>
/// <param name="e">Event data.</param>
private void OnUdpPacketReceived(UDP_e_PacketReceived e)
{
if (this.PacketReceived != null)
{
this.PacketReceived(this, e);
}
}
/// <summary>
/// Processes specified incoming UDP packet.
/// </summary>
/// <param name="e">Packet event data.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>e</b> is null reference.</exception>
private void ProcessUdpPacket(UDP_e_PacketReceived e)
{
if (e == null)
{
throw new ArgumentNullException("e");
}
OnUdpPacketReceived(e);
}
/// <summary>
/// Cleans up any resources being used.
/// </summary>
public void Dispose()
{
if (m_IsDisposed)
{
return;
}
m_IsDisposed = true;
m_pSocket = null;
m_pBuffer = null;
if (m_pSocketArgs != null)
{
m_pSocketArgs.Dispose();
m_pSocketArgs = null;
}
m_pEventArgs = null;
this.PacketReceived = null;
this.Error = null;
}
/// <summary>
/// Starts receiving data.
/// </summary>
/// <exception cref="ObjectDisposedException">Is raised when this calss is disposed and this method is accessed.</exception>
public void Start()
{
if (m_IsDisposed)
{
throw new ObjectDisposedException(this.GetType().Name);
}
if (m_IsRunning)
{
return;
}
m_IsRunning = true;
bool isIoCompletionSupported = Net_Utils.IsSocketAsyncSupported();
m_pEventArgs = new UDP_e_PacketReceived();
m_pBuffer = new byte[m_BufferSize];
if (isIoCompletionSupported)
{
m_pSocketArgs = new SocketAsyncEventArgs();
m_pSocketArgs.SetBuffer(m_pBuffer, 0, m_BufferSize);
m_pSocketArgs.RemoteEndPoint = new IPEndPoint(m_pSocket.AddressFamily == AddressFamily.InterNetwork ? IPAddress.Any : IPAddress.IPv6Any, 0);
m_pSocketArgs.Completed += delegate(object s1, SocketAsyncEventArgs e1){
if (m_IsDisposed)
{
return;
}
try{
if (m_pSocketArgs.SocketError == SocketError.Success)
{
OnPacketReceived(m_pBuffer, m_pSocketArgs.BytesTransferred, (IPEndPoint)m_pSocketArgs.RemoteEndPoint);
}
else
{
OnError(new Exception("Socket error '" + m_pSocketArgs.SocketError + "'."));
}
IOCompletionReceive();
}
catch (Exception x) {
OnError(x);
}
};
}
// Move processing to thread pool.
ThreadPool.QueueUserWorkItem(delegate(object state){
if (m_IsDisposed)
{
return;
}
try{
if (isIoCompletionSupported)
{
IOCompletionReceive();
}
else
{
EndPoint rtpRemoteEP = new IPEndPoint(m_pSocket.AddressFamily == AddressFamily.InterNetwork ? IPAddress.Any : IPAddress.IPv6Any, 0);
m_pSocket.BeginReceiveFrom(
m_pBuffer,
0,
m_BufferSize,
SocketFlags.None,
ref rtpRemoteEP,
new AsyncCallback(this.AsyncSocketReceive),
null
);
}
}
catch (Exception x) {
OnError(x);
}
});
}
