/// <summary>
/// Fires whenever a Helios <see cref="IConnection"/> gets closed.
///
/// Two possible causes for this event handler to fire:
/// * The other end of the connection has closed. We don't make any distinctions between graceful / unplanned shutdown.
/// * This end of the connection experienced an error.
/// </summary>
/// <param name="cause">An exception describing why the socket was closed.</param>
/// <param name="closedChannel">The handle to the socket channel that closed.</param>
protected override void OnDisconnect(HeliosConnectionException cause, IConnection closedChannel)
{
//if (cause != null)
// ChannelLocalActor.Notify(closedChannel, new UnderlyingTransportError(cause, "Underlying transport closed."));
ChannelLocalActor.Notify(closedChannel, new Disassociated(DisassociateInfo.Unknown));
ChannelLocalActor.Remove(closedChannel);
}
private void ConnectionTerminatedCallback(HeliosConnectionException reason, IConnection closedChannel)
{
Invoke((Action)(() =>
{
AppendStatusText(string.Format("Disconnected from {0}", closedChannel.RemoteHost));
AppendStatusText(string.Format("Reason: {0}", reason.Message));
tsStatusLabel.Text = string.Format("Disconnected from {0}", closedChannel.RemoteHost);
btnSend.Enabled = false;
tbSend.Enabled = false;
}));
}
protected override void OnDisconnect(HeliosConnectionException cause, IConnection closedChannel)
{
if(cause != null)
ChannelLocalActor.Notify(closedChannel, new UnderlyingTransportError(cause, "Underlying transport closed."));
if (cause != null && cause.Type == ExceptionType.Closed)
ChannelLocalActor.Notify(closedChannel, new Disassociated(DisassociateInfo.Shutdown));
else
{
ChannelLocalActor.Notify(closedChannel, new Disassociated(DisassociateInfo.Unknown));
}
ChannelLocalActor.Remove(closedChannel);
}
public override void Open()
{
CheckWasDisposed();
if (IsOpen()) return;
if (RemoteHost == null || RemoteHost.Host == null)
{
throw new HeliosConnectionException(ExceptionType.NotOpen, "Cannot open a connection to a null Node or null Node.Host");
}
if (RemoteHost.Port <= 0)
{
throw new HeliosConnectionException(ExceptionType.NotOpen, "Cannot open a connection to an invalid port");
}
if (_client == null)
InitClient();
var ar = _client.BeginConnect(RemoteHost.Host, RemoteHost.Port, null, null);
if (ar.AsyncWaitHandle.WaitOne(Timeout))
{
try
{
_client.EndConnect(ar);
HeliosTrace.Instance.TcpClientConnectSuccess();
}
catch (SocketException ex)
{
HeliosTrace.Instance.TcpClientConnectFailure(ex.Message);
// JKH = because I want to know if my BeginConnect has failed and because when I use BeginConnect I cannot catch this throw and it litters my Debug window
HeliosConnectionException rethrow = new HeliosConnectionException(ExceptionType.NotOpen, ex);
InvokeDisconnectIfNotNull(RemoteHost, rethrow);
return;
//throw rethrow; using BeginConnect, I cannot catch this throw...
}
}
else
{
_client.Close();
HeliosTrace.Instance.TcpClientConnectFailure("Timed out on connect");
// JKH = because I want to know if my BeginConnect has failed
HeliosConnectionException rethrow = new HeliosConnectionException(ExceptionType.TimedOut, "Timed out on connect");
InvokeDisconnectIfNotNull(RemoteHost, rethrow);
throw rethrow;
}
SetLocal(_client);
InvokeConnectIfNotNull(RemoteHost);
}
protected void InvokeDisconnectIfNotNull(INode remoteHost, HeliosConnectionException ex)
{
if (NetworkEventLoop.Disconnection != null)
{
NetworkEventLoop.Disconnection(ex, this);
}
}
/// <summary>
/// Invoked when a node's connection to this server has been disconnected
/// </summary>
/// <param name="closedChannel">The <see cref="IConnection"/> instance that just closed</param>
/// <param name="reason">The reason why this node disconnected</param>
protected void NodeDisconnected(HeliosConnectionException reason, IConnection closedChannel)
{
if (EventLoop.Disconnection != null)
{
EventLoop.Disconnection(reason, closedChannel);
}
}
protected abstract void OnDisconnect(HeliosConnectionException cause, IConnection closedChannel);
protected void InvokeDisconnectIfNotNull(INode remoteHost, HeliosConnectionException ex)
{
if (OnDisconnection != null)
{
OnDisconnection(ex, this);
}
}
private static void ConnectionTerminatedCallback(HeliosConnectionException reason, IConnection closedChannel)
{
Console.WriteLine("Connection Terminated");
}
protected override void OnDisconnect(HeliosConnectionException cause, IConnection closedChannel)
{
ChannelLocalActor.Notify(closedChannel, new Disassociated(DisassociateInfo.Unknown));
}
protected override void OnDisconnect(HeliosConnectionException cause, IConnection closedChannel)
{
_handler.OnDisconnect(cause, closedChannel);
}
