private void ReceiveCallback(IAsyncResult ar)
{
TcpAdapterEndPoint endPoint = null;
try
{
endPoint = (TcpAdapterEndPoint)ar.AsyncState;
Socket clientSocket = endPoint.Socket;
int byteCount = clientSocket.EndReceive(ar);
if (byteCount > 0)
{
MultiPartMessage msg = new MultiPartMessage("",
new MemoryStream(endPoint.buffer, 0, byteCount));
OnMessageReceived(msg, endPoint);
InitializeEndPoint(endPoint);
}
else
{
Disconnect(endPoint);
}
}
catch (Exception ex)
{
Disconnect(endPoint, ex);
}
}
private TcpAdapterEndPoint CreateEndPoint(Socket socket)
{
TcpAdapterEndPoint endPoint = new TcpAdapterEndPoint(this, socket);
try
{
Uri uri = new UriBuilder("tcp", ((IPEndPoint)socket.RemoteEndPoint).Address.ToString(),
((IPEndPoint)socket.RemoteEndPoint).Port).Uri;
TcpAdapterEndPoint existingEndPoint = MessageEngine.Instance.AdapterProxy.ResolveUriToEndPoint(uri) as TcpAdapterEndPoint;
if (existingEndPoint != null)
{
Disconnect(existingEndPoint);
}
OnEndPointCreated(endPoint);
InitializeEndPoint(endPoint);
}
catch (Exception)
{
Disconnect(endPoint);
throw;
}
return(endPoint);
}
private void InitializeEndPoint(TcpAdapterEndPoint endPoint)
{
int timeout = Configuration.ReadAsInt("TcpEndPointTimeout");
if (timeout > 0)
{
SetEndPointTimeout(endPoint, DateTime.Now.AddMilliseconds(timeout));
}
endPoint.Socket.BeginReceive(endPoint.buffer, 0, TcpAdapterEndPoint.bufferSize, 0, ReceiveCallback, endPoint);
}
public void SetEndPointTimeout(TcpAdapterEndPoint endPoint, DateTime timeout)
{
lock (endPoint)
{
endPoint.Timeout = timeout;
}
lock (_syncObject)
{
if (timeout < _currentTimeout)
{
_timeoutWaitEvent.Set();
}
}
}
private void OnEndpointTimeout(TcpAdapterEndPoint endPoint)
{
//Mark as timed out
lock (endPoint)
{
endPoint.Timeout = DateTime.MaxValue;
}
Disconnect(endPoint);
if ((MessageEngine.Instance.Tracing.Switch.Level & SourceLevels.Warning) == SourceLevels.Warning)
{
MessageEngine.Instance.Tracing.TraceEvent(TraceEventType.Warning, 0, "EndPoint: \"{0}\" timed out due to inactivity.", endPoint);
}
}
private void Disconnect(TcpAdapterEndPoint endPoint, Exception exception)
{
if (endPoint != null)
{
try
{
endPoint.Socket.Close();
}
catch (SocketException)
{
}
catch (ObjectDisposedException)
{
}
finally
{
endPoint.Exception = exception;
OnEndPointDestroyed(endPoint);
}
}
}
/// <summary>
/// Transmits a message over the adapter protocol.
/// </summary>
/// <param name="msg">The message to transmit.</param>
public override void TransmitMessage(MultiPartMessage msg)
{
Uri sendUri = (Uri)msg.Metadata.Read("SendUri");
TcpAdapterEndPoint endPoint
= (TcpAdapterEndPoint)MessageEngine.Instance.AdapterProxy.ResolveUriToEndPoint(sendUri);
if (endPoint == null)
{
throw new AdapterException("Failed to transmit message to Uri: \"" + sendUri + "\". The EndPoint does not exist.");
}
try
{
byte[] buffer = new byte[msg.Data.Length];
msg.Data.Seek(0, SeekOrigin.Begin);
msg.Data.Read(buffer, 0, (int)msg.Data.Length);
endPoint.Socket.Send(buffer, 0, (int)msg.Data.Length, SocketFlags.None);
}
catch (NullReferenceException ex)
{
throw new AdapterException("Failed to transmit message to EndPoint: \"" + endPoint + "\".", ex);
}
catch (ArgumentNullException ex)
{
throw new AdapterException("Failed to transmit message to EndPoint: \"" + endPoint + "\".", ex);
}
catch (SocketException ex)
{
Disconnect(endPoint, ex);
throw new AdapterException("Failed to transmit message to EndPoint: \"" + endPoint + "\".", ex);
}
catch (ObjectDisposedException ex)
{
//The socket has been closed by another thread
Disconnect(endPoint, ex);
throw new AdapterException("Failed to transmit message to EndPoint: \"" + endPoint + "\".", ex);
}
}
public void Disconnect(TcpAdapterEndPoint endPoint)
{
Disconnect(endPoint, null);
}