/// <summary>
/// Processes the messages received from the event client.
/// </summary>
/// <param name="message">Message received from the client.</param>
private void ProcessMessage(string message)
{
// Turn the message into an xml document.
XmlDocument document = new XmlDocument();
document.LoadXml(message);
// Find out what type of request message was sent.
if (IProcEventRegistration.IsValidRequest(document))
{
IProcEventRegistration er = new IProcEventRegistration(document);
// Make sure that the host address is loopback for now.
if (!IPAddress.IsLoopback(er.RemoteAddress))
{
log.Error(String.Format("An invalid address was specified in the registration message {0}.", er.RemoteAddress));
eventSocket.Shutdown(SocketShutdown.Both);
eventSocket.Close();
subscriberTable.Remove(port);
}
// See if the client is registering or deregistering.
if (er.Registering)
{
// Create the event subscribers.
simiasNodeEventSubscriber = new EventSubscriber();
simiasSyncEventSubscriber = new SyncEventSubscriber();
simiasNotifyEventSubscriber = new NotifyEventSubscriber();
log.Debug("Client {0}:{1} has registered for interprocess events", er.RemoteAddress, er.Port);
}
else
{
DisposeSubscribers();
log.Debug("Client {0}:{1} has deregistered for interprocess events", er.RemoteAddress, er.Port);
}
}
else if (IProcEventListener.IsValidRequest(document))
{
// Make sure that registration has occurred.
if ((simiasNodeEventSubscriber == null) ||
(simiasSyncEventSubscriber == null) ||
(simiasNodeEventSubscriber == null))
{
log.Error("Client must be registered before subscribing for events.");
throw new SimiasException("Client must be registered before subscribing for events.");
}
IProcEventListener el = new IProcEventListener(document);
ProcessEventListener(el);
}
else
{
log.Debug("{0} : An invalid request message was received.", port);
throw new SimiasException("An invalid request message was received.");
}
}
/// <summary>
/// Disposes the event subscribers.
/// </summary>
private void DisposeSubscribers()
{
log.Debug("{0} : Disposing all subscribers.", port);
if (simiasNodeEventSubscriber != null)
{
simiasNodeEventSubscriber.Dispose();
simiasNodeEventSubscriber = null;
}
if (simiasSyncEventSubscriber != null)
{
simiasSyncEventSubscriber.Dispose();
simiasSyncEventSubscriber = null;
}
if (simiasNotifyEventSubscriber != null)
{
simiasNotifyEventSubscriber.Dispose();
simiasNotifyEventSubscriber = null;
}
}
