protected override IAsyncResult OnBeginOfflineAnnouncement(DiscoveryMessageSequence messageSequence, EndpointDiscoveryMetadata endpointDiscoveryMetadata, AsyncCallback callback, object state)
{
try
{
if (endpointDiscoveryMetadata == null)
{
throw new ArgumentNullException("endpointDiscoveryMetadata");
}
// We care only about ISimpleChatService services
FindCriteria criteria = new FindCriteria(typeof(ISimpleChatService));
if (criteria.IsMatch(endpointDiscoveryMetadata))
{
endpointDiscoveryMetadata.WriteLine("Removing");
Cache.Remove(endpointDiscoveryMetadata.Address.Uri);
}
}
catch (KeyNotFoundException)
{
// No problem if it does not exist in the cache
}
return new CompletedAsyncResult(callback, state);
}
protected override IAsyncResult OnBeginOnlineAnnouncement(DiscoveryMessageSequence messageSequence,
EndpointDiscoveryMetadata endpointDiscoveryMetadata,
AsyncCallback callback,
object state)
{
if (endpointDiscoveryMetadata == null)
{
throw new ArgumentNullException("endpointDiscoveryMetadata");
}
// We care only about ISimpleChatService services
FindCriteria criteria = new FindCriteria(typeof(ISimpleChatService));
if (criteria.IsMatch(endpointDiscoveryMetadata))
{
endpointDiscoveryMetadata.WriteLine("Adding");
Cache.Add(endpointDiscoveryMetadata);
}
return new CompletedAsyncResult(callback, state);
}