/// <summary>
/// Connect callback. This method called asynchronously
/// from the Socket as an answer to BeginConnect() call
/// </summary>
/// <param name="asyncResult">The status of an asynchronous operation</param>
private void ConnectCallback(IAsyncResult asyncResult)
{
try
{
Exception connectException = null;
try
{
if (m_closed)
{
return;
}
if (asyncResult.AsyncState.Equals("CommandSocket"))
{
// Finalize socket connect and store possible exception
m_commandSocket.EndConnect(asyncResult);
if (m_commandSocket.Connected) // CONNECTED!
{
m_eventDataSocket.BeginConnect(m_remoteEndPoint, ConnectCallback, "EventDataSocket");
return;
}
else
{
connectException = new TransportException("Unable to connect");
}
}
else if (asyncResult.AsyncState.Equals("EventDataSocket"))
{
// Finalize socket connect and store possible exception
m_eventDataSocket.EndConnect(asyncResult);
if (m_eventDataSocket.Connected) // CONNECTED!
{
// Starts Send and Receive Threads
lock (m_stateLock)
{
SendThreadStart();
ReceiveThreadStart();
}
if (m_target != null)
{
m_target.IsConnected = true;
}
m_transportEvent.Set(); // Signal to protocol
return;
}
connectException = new TransportException("Unable to connect");
}
}
catch (SocketException ex)
{
connectException = ex;
}
// We will be here if socket is not connected, Process Timeouts
bool needReconnect = false;
// Calculate elapsed time
TimeSpan timeElapsed = DateTime.Now - m_connectBeginTime;
if (TimeSpan.Zero == ConnectTimeout)
{
// Single connect attempt with no retries
}
else if (ConnectTimeout == TimeSpan.MaxValue)
{
needReconnect = true; // Just try to connect again
}
else if (timeElapsed < ConnectTimeout)
{
needReconnect = true;
}
if (needReconnect) // Retry connect to the server
{
if (!m_closed)
{
m_commandSocket.BeginConnect(m_remoteEndPoint, ConnectCallback, "CommandSocket");
}
return;
}
else // Make time out exception
{
Exception = new TransportException(string.Format("Connection Timeout", connectException.Message));
}
}
catch (SocketException ex)
{
Exception = ex;
}
catch (ObjectDisposedException ex) // Socket was disposed
{
Exception = ex;
}
m_transportEvent.Set(); // Signal for completed operation
}
/// <summary>
/// Connect callback. This method called asynchronously
/// from the Socket as an answer to BeginConnect() call
/// </summary>
/// <param name="asyncResult">The status of an asynchronous operation</param>
private void ConnectCallback(IAsyncResult asyncResult)
{
try
{
Exception connectException = null;
try
{
if (m_closed)
return;
if (asyncResult.AsyncState.Equals("CommandSocket"))
{
// Finalize socket connect and store possible exception
m_commandSocket.EndConnect(asyncResult);
if (m_commandSocket.Connected) // CONNECTED!
{
m_eventDataSocket.BeginConnect(m_remoteEndPoint, ConnectCallback, "EventDataSocket");
return;
}
else
{
connectException = new TransportException("Unable to connect");
}
}
else if (asyncResult.AsyncState.Equals("EventDataSocket"))
{
// Finalize socket connect and store possible exception
m_eventDataSocket.EndConnect(asyncResult);
if (m_eventDataSocket.Connected) // CONNECTED!
{
// Starts Send and Receive Threads
lock (m_stateLock)
{
SendThreadStart();
ReceiveThreadStart();
}
if (m_target != null)
{
m_target.IsConnected = true;
}
m_transportEvent.Set(); // Signal to protocol
return;
}
connectException = new TransportException("Unable to connect");
}
}
catch (SocketException ex)
{
connectException = ex;
}
// We will be here if socket is not connected, Process Timeouts
bool needReconnect = false;
// Calculate elapsed time
TimeSpan timeElapsed = DateTime.Now - m_connectBeginTime;
if (TimeSpan.Zero == ConnectTimeout)
{
// Single connect attempt with no retries
}
else if (ConnectTimeout == TimeSpan.MaxValue)
{
needReconnect = true; // Just try to connect again
}
else if (timeElapsed < ConnectTimeout)
{
needReconnect = true;
}
if (needReconnect) // Retry connect to the server
{
if (!m_closed)
m_commandSocket.BeginConnect(m_remoteEndPoint, ConnectCallback, "CommandSocket");
return;
}
else // Make time out exception
{
Exception = new TransportException(string.Format("Connection Timeout", connectException.Message));
}
}
catch (SocketException ex)
{
Exception = ex;
}
catch (ObjectDisposedException ex) // Socket was disposed
{
Exception = ex;
}
m_transportEvent.Set(); // Signal for completed operation
}
