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);
}
using (_cpData.Lock.EnterWrite())
{
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);
}
}
private void ContinueGetServiceDescription(DescriptionRequestState state)
{
RootDescriptor rootDescriptor = state.RootDescriptor;
IEnumerator <ServiceDescriptor> enumer = state.PendingServiceDescriptions.GetEnumerator();
if (!enumer.MoveNext())
{
lock (_cpData.SyncObj)
{
if (rootDescriptor.State != RootDescriptorState.AwaitingServiceDescriptions)
{
return;
}
_pendingRequests.Remove(state);
rootDescriptor.State = RootDescriptorState.Ready;
}
// This event is needed for two cases: 1) "Normal" first device advertisement, 2) configuration change event (see comment in method HandleDeviceConfigurationChanged)
InvokeRootDeviceAdded(rootDescriptor);
}
else
{
lock (_cpData.SyncObj)
if (rootDescriptor.State != RootDescriptorState.AwaitingServiceDescriptions)
{
return;
}
state.CurrentServiceDescriptor = enumer.Current;
string url = state.CurrentServiceDescriptor.DescriptionURL;
state.PendingServiceDescriptions.Remove(state.CurrentServiceDescriptor);
state.CurrentServiceDescriptor.State = ServiceDescriptorState.AwaitingDescription;
try
{
LinkData preferredLink = rootDescriptor.SSDPRootEntry.PreferredLink;
HttpWebRequest request = CreateHttpGetRequest(new Uri(new Uri(preferredLink.DescriptionLocation), url),
preferredLink.Endpoint.EndPointIPAddress);
state.Request = request;
IAsyncResult result = request.BeginGetResponse(OnServiceDescriptionReceived, state);
NetworkHelper.AddTimeout(request, result, PENDING_REQUEST_TIMEOUT * 1000);
}
catch (Exception) // Don't log exceptions at this low protocol level
{
lock (_cpData.SyncObj)
state.CurrentServiceDescriptor.State = ServiceDescriptorState.Erroneous;
}
}
}
/// <summary>
/// Initializes the HTTP range request asynchronously.
/// </summary>
protected void Load_Async()
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(_url);
NetworkUtils.SetLocalEndpoint(request, _localIpAddress);
request.Method = "GET";
request.KeepAlive = true;
request.AllowAutoRedirect = true;
request.UserAgent = _userAgent;
request.AddRange(_startIndex, _endIndex - 1);
IAsyncResult result = request.BeginGetResponse(OnResponseReceived, request);
NetworkHelper.AddTimeout(request, result, HTTP_RANGE_REQUEST_TIMEOUT);
_pendingRequest = request;
_numTries++;
}
private void OnEventGetRequestStream(IAsyncResult ar)
{
AsyncRequestState state = (AsyncRequestState)ar.AsyncState;
try
{
Stream requestStream = state.Request.EndGetRequestStream(ar);
// ... then write to it...
requestStream.Write(state.MessageData, 0, state.MessageData.Length);
requestStream.Close();
// ... and get the response
IAsyncResult result = state.Request.BeginGetResponse(OnEventResponseReceived, state);
NetworkHelper.AddTimeout(state.Request, result, PENDING_EVENT_NOTIFICATION_TIMEOUT * 1000);
}
catch (IOException) { }
catch (WebException) { }
ContinueEventNotification(state);
}
internal void OnActionCalled(CpAction action, IList <object> inParams, object clientState)
{
if (!action.IsConnected)
{
throw new UPnPDisconnectedException("Action '{0}' is not connected to a UPnP network action", action.FullQualifiedName);
}
CpService service = action.ParentService;
ServiceDescriptor sd = GetServiceDescriptor(service);
string message = SOAPHandler.EncodeCall(action, inParams, _rootDescriptor.SSDPRootEntry.UPnPVersion);
HttpWebRequest request = CreateActionCallRequest(sd, action);
ActionCallState state = new ActionCallState(action, clientState, request);
state.SetRequestMessage(message);
lock (_cpData.SyncObj)
_pendingCalls.Add(state);
IAsyncResult result = state.Request.BeginGetResponse(OnCallResponseReceived, state);
NetworkHelper.AddTimeout(request, result, PENDING_ACTION_CALL_TIMEOUT * 1000);
}