internal void UnsubscribeEvents(EventSubscription subscription)
{
lock (_cpData.SyncObj)
{
HttpWebRequest request = CreateEventUnsubscribeRequest(subscription);
ChangeEventSubscriptionState state = new ChangeEventSubscriptionState(subscription.ServiceDescriptor, subscription.Service, request);
_pendingCalls.Add(state);
IAsyncResult result = state.Request.BeginGetResponse(OnUnsubscribeResponseReceived, state);
NetworkHelper.AddTimeout(request, result, EVENT_UNSUBSCRIPTION_CALL_TIMEOUT * 1000);
}
}
protected HttpWebRequest CreateEventUnsubscribeRequest(EventSubscription subscription)
{
ServiceDescriptor sd = subscription.ServiceDescriptor;
LinkData preferredLink = sd.RootDescriptor.SSDPRootEntry.PreferredLink;
HttpWebRequest request = (HttpWebRequest) WebRequest.Create(new Uri(
new Uri(preferredLink.DescriptionLocation), sd.EventSubURL));
NetworkUtils.SetLocalEndpoint(request, preferredLink.Endpoint.EndPointIPAddress);
request.Method = "UNSUBSCRIBE";
request.Headers.Add("SID", subscription.Sid);
return request;
}
protected void RenewEventSubscription(EventSubscription subscription)
{
if (!subscription.Service.IsConnected)
throw new IllegalCallException("Service '{0}' is not connected to a UPnP network service", subscription.Service.FullQualifiedName);
lock (_cpData.SyncObj)
{
HttpWebRequest request = CreateRenewEventSubscribeRequest(subscription);
ChangeEventSubscriptionState state = new ChangeEventSubscriptionState(subscription.ServiceDescriptor, subscription.Service, request);
_pendingCalls.Add(state);
IAsyncResult result = state.Request.BeginGetResponse(OnSubscribeOrRenewSubscriptionResponseReceived, state);
NetworkHelper.AddTimeout(request, result, EVENT_SUBSCRIPTION_CALL_TIMEOUT * 1000);
}
}
