public DiscoveryMessageSequence GetMessageSequence(EndpointDiscoveryMetadata endpointDiscoveryMetadata)
{
if (endpointDiscoveryMetadata == null)
{
throw FxTrace.Exception.ArgumentNull("endpointDiscoveryMetadata");
}
DiscoveryMessageSequence messageSequence = null;
if (!this.messageSequenceTable.TryGetValue(endpointDiscoveryMetadata, out messageSequence))
{
throw FxTrace.Exception.Argument("endpointDiscoveryMetadata", SR2.DiscoveryFindResponseMessageSequenceNotFound);
}
return(messageSequence);
}
//-----------------------------------------------------
// Online Announcements
//-----------------------------------------------------
#region OnlineAnnouncement
/// <summary>
/// Handles an online announcement message.
/// </summary>
/// <param name="messageSequence">The discovery message sequence.</param>
/// <param name="endpointDiscoveryMetadata">The endpoint discovery metadata.</param>
/// <param name="callback">The callback delegate to call when the operation is completed.</param>
/// <param name="state">The user-defined state data.</param>
/// <returns>A reference to the pending asynchronous operation.</returns>
protected override IAsyncResult OnBeginOnlineAnnouncement(DiscoveryMessageSequence messageSequence,
EndpointDiscoveryMetadata endpointDiscoveryMetadata,
AsyncCallback callback, object state)
{
var tcs = new TaskCompletionSource <object>(state);
// Start a background task that will process anounncement
Task.Factory.StartNew(() =>
{
// Create and executy all Online announcement tasks
var tasks = _onlineTaskFactories.AsParallel()
.Select((factory) => { return(factory.Create(new DiscoveryMessageSequence[] { messageSequence },
new EndpointDiscoveryMetadata[] { endpointDiscoveryMetadata })); })
.ToArray();
// TODO: Decide if we want to wait for completion of all tasks
// Task.WaitAll(tasks);
tcs.SetResult(null);
callback(tcs.Task);
});
return(tcs.Task);
}
protected abstract IAsyncResult BeginSendProxyAnnouncement(
TResponseChannel responseChannel,
DiscoveryMessageSequence discoveryMessageSequence,
EndpointDiscoveryMetadata proxyEndpointDiscoveryMetadata,
AsyncCallback callback,
object state);
protected abstract IAsyncResult BeginSendResolveResponse(
TResponseChannel responseChannel,
DiscoveryMessageSequence discoveryMessageSequence,
EndpointDiscoveryMetadata matchingEndpoint,
AsyncCallback callback,
object state);
internal void AddDiscoveredEndpoint(EndpointDiscoveryMetadata endpointDiscoveryMetadata,
DiscoveryMessageSequence messageSequence)
{
this.messageSequenceTable.Add(endpointDiscoveryMetadata, messageSequence);
this.endpoints.Add(endpointDiscoveryMetadata);
}
/// <summary>
/// Handles Offline announcements.
/// </summary>
/// <param name="messageSequence">The array discovery message sequence.</param>
/// <param name="endpointDiscoveryMetadata">The array of endpoint discovery metadata.</param>
protected abstract void OnOfflineAnnouncement(DiscoveryMessageSequence messageSequence,
EndpointDiscoveryMetadata endpointDiscoveryMetadata);
protected abstract TResponseMessage GetResolveResponse(
DiscoveryMessageSequence discoveryMessageSequence,
EndpointDiscoveryMetadata matchingEndpoints);
protected abstract IAsyncResult OnBeginOfflineAnnouncement(
DiscoveryMessageSequence messageSequence,
EndpointDiscoveryMetadata endpointDiscoveryMetadata,
AsyncCallback callback,
object state);
internal FindProgressChangedEventArgs(int progressPercentage, object userState,
EndpointDiscoveryMetadata endpointDiscoveryMetadata, DiscoveryMessageSequence messageSequence)
: base(progressPercentage, userState)
{
this.endpointDiscoveryMetadata = endpointDiscoveryMetadata;
this.messageSequence = messageSequence;
}
internal FindProgressChangedEventArgs(EndpointDiscoveryMetadata metadata, DiscoveryMessageSequence sequence, int progressPercentage, object userState)
: base(progressPercentage, userState)
{
EndpointDiscoveryMetadata = metadata;
MessageSequence = sequence;
}
internal ResolveResponse(EndpointDiscoveryMetadata metadata, DiscoveryMessageSequence sequence)
{
EndpointDiscoveryMetadata = metadata;
MessageSequence = sequence;
}
internal AnnouncementEventArgs(EndpointDiscoveryMetadata metadata, DiscoveryMessageSequence queue)
{
EndpointDiscoveryMetadata = metadata;
MessageSequence = queue;
}
protected abstract TResponseMessage GetProbeResponse(
DiscoveryMessageSequence discoveryMessageSequence,
Collection <EndpointDiscoveryMetadata> matchingEndpoints);
