/// <summary>
/// The HandleConnect method is invoked by an asynchronous
/// connection attempt to inform the connector that it has
/// been completed. The connector will take the appropriate
/// action depending on the resulting state of the request.
/// </summary>
/// <param name="ar">
/// The .NET asynchronous result details.
/// </param>
private void HandleConnect(IAsyncResult ar)
{
// REC: Retrieve the original IPC state information
// that was provided to the asynchronous operation:
IpcState ipcState = ar.AsyncState as IpcState;
if (ipcState != null)
{
try
{
ipcState.IpcSocket.EndConnect(ar);
// REC: Dispatch the connect success event to the
// subscribers so that they can determine whether
// or not the connection should go forward.
EventHandler <VfxTcpConnectorEventArgs> tmpDispatch = EventDispatch;
if (tmpDispatch != null)
{
VfxTcpConnectorEventArgs connectArgs = new VfxTcpConnectorEventArgs();
connectArgs.EventType = VfxTcpConnectorEventTypes.Event_Connect_Success;
connectArgs.EventSocket = ipcState.IpcSocket;
connectArgs.EventEndpoint = ipcState.IpcEndpoint;
tmpDispatch(this, connectArgs);
// REC: Check the cancellation flag to determine if
// any subscriber wants the connection canceled:
if (connectArgs.EventCancel == true)
{
ipcState.IpcSocket.Close();
return;
}
}
// REC: Create a new instance of VfxTcpModule that
// will be used for processing IO over the socket:
VfxTcpModule tcpModule = new VfxTcpModule();
tcpModule.Init(ipcState.IpcSocket, this.RxBuffering);
// REC: Pass the initialized module to the instance
// of the VFX IPC session that is associated with the
// connection request:
ipcState.IpcSession.Init(tcpModule);
}
catch (System.Exception x)
{
EventHandler <VfxTcpConnectorEventArgs> tmpDispatch = EventDispatch;
if (tmpDispatch != null)
{
VfxTcpConnectorEventArgs tmpArgs = new VfxTcpConnectorEventArgs();
tmpArgs.EventType = VfxTcpConnectorEventTypes.Event_Connect_Failure;
tmpArgs.EventEndpoint = ipcState.IpcEndpoint;
tmpArgs.EventException = x;
tmpDispatch(this, tmpArgs);
}
}
}
}
private void CompleteAccept(IAsyncResult ar)
{
IoContext context = ar.AsyncState as IoContext;
if (context != null)
{
try
{
Socket peer = context.IpcSocket.EndAccept(ar);
// REC: Locate the factory associated with this endpoint
// and create the appropriate type of session instance:
if (_mapFactories.ContainsKey(context.IpcEndPoint))
{
IPEndPoint peerEP = peer.RemoteEndPoint as IPEndPoint;
if (ValidatePeer(peerEP))
{
VfxTcpModule tcpModule = new VfxTcpModule();
tcpModule.Init(peer, this.RxBuffering);
// REC: Create a new instance of the session handler that
// is configured for the endpoint and associated the
// client IO stream with it:
IVfxIpcSession session = _mapFactories[context.IpcEndPoint].CreateSession();
session.Init(tcpModule);
}
else
{
peer.Close();
}
}
// REC: Initiate another asynchronous connection:
context.IpcSocket.BeginAccept(CompleteAccept, context);
}
catch (System.ObjectDisposedException)
{
// REC: This exception gets thrown when an asynchronous
// accept fails due to the socket it was initiated from
// being closed. This is part of the shutdown procedure
// and should just be caught and ignored.
}
}
}