/// <summary>
/// Method to be called when a service has been discovered on the network.
/// When listeners have been installed for this particular service, they will be correctly notified.
/// </summary>
/// <param name="sender">Caller of the event</param>
/// <param name="eventArgs">Arguments attached to the event</param>
public void OnServiceDiscovered(object sender, ServiceNotificationEventArgs eventArgs)
{
System.Diagnostics.Debug.WriteLine(String.Format("SERVICE DISCOVERED: {0}, {1}", eventArgs.typetag.tag, eventArgs.sourceAddress));
// Find out if ServiceListeners have been installed for a service of this particular type. If yes, call its "IsDiscovered" method
// or "HandleDiscovery" on the ServiceListenerBase
List<ServiceListenerBase> listeners = this.serviceManager.subscriptionManager.GetServiceListeners(eventArgs.typetag);
foreach (ServiceListenerBase listener in listeners)
listener.HandleDiscovery(eventArgs.service);
}
/// <summary>
/// Event to be triggered when a service reconnects to the network.
/// When listeners have been installed, they will be correctly notified.
/// </summary>
/// <param name="sender">Caller of the event</param>
/// <param name="eventArgs">Arguments linked to the event</param>
public void OnServiceReconnected(object sender, ServiceNotificationEventArgs eventArgs)
{
System.Diagnostics.Debug.WriteLine(String.Format("SERVICE RECONNECTED: {0}, {1}", eventArgs.typetag.tag, eventArgs.sourceAddress));
// Notify the appropriate listeners
List<ServiceListenerBase> listeners = this.serviceManager.subscriptionManager.GetServiceListeners(eventArgs.typetag);
foreach (ServiceListenerBase listener in listeners)
listener.HandleReconnection(eventArgs.service);
}
/// <summary>
/// Remove a previously imported service. Will move this service to the disconnected list.
/// </summary>
/// <param name="serviceIdentifier">Identifier of the disconnecting service</param>
public void RemoveService(Guid serviceIdentifier)
{
// If we haven't discovered the service in the first place, ignore
if (!this.IsImportedService(serviceIdentifier))
return;
string sourceAddress = "";
// Remove the fact that we imported this service from "someone" (also grab the address while we're at it)
foreach (string address in this.importedServiceAddresses.Keys)
{
List<Guid> serviceIdentifiers = this.importedServiceAddresses[address];
if (serviceIdentifiers.Contains(serviceIdentifier))
{
sourceAddress = address;
serviceIdentifiers.Remove(serviceIdentifier);
if (serviceIdentifiers.Count == 0)
this.importedServiceAddresses.Remove(address);
// Break from the loop, because a service can only be exported by one client
break;
}
}
ServiceNotificationEventArgs eventArgs =
new ServiceNotificationEventArgs(serviceIdentifier, sourceAddress, this.importedServiceTypeTags[serviceIdentifier], this.importedServices[serviceIdentifier]);
// Remove the service implementation
this.importedServices.Remove(serviceIdentifier);
// Remove the service from the typetag dictionary
this.importedServiceTypeTags.Remove(serviceIdentifier);
// Add the service to the list of disconnected services
this.diconnectedServices.Add(serviceIdentifier);
if (this.ServiceDisconnectedEvent != null)
this.ServiceDisconnectedEvent(this, eventArgs);
}
